5fc3303a35
Using the knife tool with Vulkan failed because using GPU_PRIM_POINTS isn't supported with the GPU_SHADER_3D_UNIFORM_COLOR shader. Resolve using a shader intended for drawing points. Ref !136109
4847 lines
143 KiB
C++
4847 lines
143 KiB
C++
/* SPDX-FileCopyrightText: 2007 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup edmesh
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*
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* Interactive editmesh knife tool.
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*/
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#ifdef _MSC_VER
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# define _USE_MATH_DEFINES
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#endif
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#include <fmt/format.h>
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#include "MEM_guardedalloc.h"
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#include "BLF_api.hh"
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#include "BLI_alloca.h"
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#include "BLI_linklist.h"
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#include "BLI_listbase.h"
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#include "BLI_map.hh"
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#include "BLI_math_color.h"
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#include "BLI_math_geom.h"
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#include "BLI_math_matrix.h"
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#include "BLI_math_rotation.h"
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#include "BLI_math_vector.hh"
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#include "BLI_math_vector_types.hh"
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#include "BLI_memarena.h"
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#include "BLI_set.hh"
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#include "BLI_stack.h"
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#include "BLI_string.h"
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#include "BLI_vector.hh"
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#include "BLT_translation.hh"
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#include "BKE_bvhutils.hh"
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#include "BKE_context.hh"
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#include "BKE_editmesh.hh"
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#include "BKE_layer.hh"
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#include "BKE_report.hh"
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#include "BKE_scene.hh"
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#include "BKE_screen.hh"
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#include "BKE_unit.hh"
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#include "GPU_immediate.hh"
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#include "GPU_matrix.hh"
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#include "GPU_state.hh"
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#include "ED_mesh.hh"
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#include "ED_numinput.hh"
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#include "ED_screen.hh"
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#include "ED_space_api.hh"
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#include "ED_transform.hh"
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#include "ED_view3d.hh"
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#include "WM_api.hh"
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#include "WM_types.hh"
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#include "DNA_object_types.h"
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#include "UI_interface.hh"
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#include "UI_resources.hh"
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#include "RNA_access.hh"
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#include "RNA_define.hh"
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#include "DEG_depsgraph_query.hh"
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#include "mesh_intern.hh" /* Own include. */
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using namespace blender;
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/* Detect isolated holes and fill them. */
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#define USE_NET_ISLAND_CONNECT
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#define KMAXDIST (10 * UI_SCALE_FAC) /* Max mouse distance from edge before not detecting it. */
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/* WARNING: Knife float precision is fragile:
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* Be careful before making changes here see: (#43229, #42864, #42459, #41164).
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*/
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#define KNIFE_FLT_EPS 0.00001f
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#define KNIFE_FLT_EPS_SQUARED (KNIFE_FLT_EPS * KNIFE_FLT_EPS)
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#define KNIFE_FLT_EPSBIG 0.0005f
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#define KNIFE_FLT_EPS_PX_VERT 0.5f
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#define KNIFE_FLT_EPS_PX_EDGE 0.05f
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#define KNIFE_FLT_EPS_PX_FACE 0.05f
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#define KNIFE_DEFAULT_ANGLE_SNAPPING_INCREMENT 30.0f
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#define KNIFE_MIN_ANGLE_SNAPPING_INCREMENT 0.0f
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#define KNIFE_MAX_ANGLE_SNAPPING_INCREMENT 180.0f
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struct KnifeColors {
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uchar line[3];
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uchar edge[3];
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uchar edge_extra[3];
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uchar curpoint[3];
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uchar curpoint_a[4];
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uchar point[3];
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uchar point_a[4];
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uchar xaxis[3];
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uchar yaxis[3];
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uchar zaxis[3];
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uchar axis_extra[3];
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};
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/* Knife-tool Operator. */
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struct KnifeVert {
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BMVert *v; /* Non-null if this is an original vert. */
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ListBase edges;
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ListBase faces;
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/* Index of the associated object.
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* -1 represents the absence of an object. */
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int ob_index;
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float co[3]; /* Vertex position in the original mesh. Equivalent to #BMVert::co[3]. */
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float3 cageco; /* Vertex position in the Cage mesh and in World Space. */
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bool is_cut; /* Along a cut created by user input (will draw too). */
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bool is_invalid;
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bool is_splitting; /* Created when an edge was split. */
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};
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struct KnifeEdge {
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KnifeVert *v1, *v2;
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BMFace *basef; /* Face to restrict face fill to. */
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ListBase faces;
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BMEdge *e; /* Non-null if this is an original edge. */
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bool is_cut; /* Along a cut created by user input (will draw too). */
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bool is_invalid;
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int splits; /* Number of times this edge has been split. */
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};
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struct KnifeLineHit {
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float hit[3], cagehit[3];
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float schit[2]; /* Screen coordinates for cagehit. */
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float l; /* Lambda along cut line. */
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float m; /* Depth front-to-back. */
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/* Exactly one of kfe, v, or f should be non-null,
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* saying whether cut line crosses and edge,
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* is snapped to a vert, or is in the middle of some face. */
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KnifeEdge *kfe;
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KnifeVert *v;
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BMFace *f;
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/* Index of the associated object.
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* -1 represents the absence of an object. */
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int ob_index;
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};
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struct KnifePosData {
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float3 cage;
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/* At most one of vert, edge, or bmface should be non-null,
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* saying whether the point is snapped to a vertex, edge, or in a face.
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* If none are set, this point is in space and is_space should be true. */
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KnifeVert *vert;
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KnifeEdge *edge;
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BMFace *bmface;
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/* Index of the associated object.
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* -1 represents the absence of an object. */
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int ob_index;
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float2 mval; /* Mouse screen position (may be non-integral if snapped to something). */
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bool is_space() const
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{
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return this->ob_index == -1;
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}
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};
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struct KnifeMeasureData {
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float cage[3];
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float mval[2];
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bool is_stored;
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};
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struct KnifeUndoFrame {
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int cuts; /* Line hits cause multiple edges/cuts to be created at once. */
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int splits; /* Number of edges split. */
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KnifePosData pos; /* Store previous KnifePosData. */
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KnifeMeasureData mdata;
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};
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struct KnifeBVH {
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BVHTree *tree; /* Knife Custom BVH Tree. */
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/* Used by #knife_bvh_raycast_cb to store the intersecting triangles. */
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blender::Span<std::array<BMLoop *, 3>> looptris;
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int ob_index;
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/* Use #bm_ray_cast_cb_elem_not_in_face_check. */
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bool (*filter_cb)(BMFace *f, void *userdata);
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void *filter_data;
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};
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/** Additional per-object data. */
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struct KnifeObjectInfo {
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Array<float3> positions_cage;
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/**
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* Optionally allocate triangle indices, these are needed for non-interactive knife
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* projection as multiple cuts are made without the BVH being updated.
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* Using these indices the it's possible to access `cagecos` even if the face has been cut
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* and the loops in `em->looptris` no longer refer to the original triangles, see: #97153.
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*/
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Array<int3> tri_indices;
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/** Only assigned for convenient access. */
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BMEditMesh *em;
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};
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enum KnifeMode { MODE_IDLE, MODE_DRAGGING, MODE_CONNECT, MODE_PANNING };
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/* struct for properties used while drawing */
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struct KnifeTool_OpData {
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ARegion *region; /* Region that knifetool was activated in. */
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void *draw_handle; /* For drawing preview loop. */
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ViewContext vc; /* NOTE: _don't_ use 'mval', instead use the one we define below. */
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Scene *scene;
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/* Used for swapping current object when in multi-object edit mode. */
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Vector<Object *> objects;
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/** Array `objects_len` length of additional per-object data. */
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Array<KnifeObjectInfo> objects_info;
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MemArena *arena;
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/* Reused for edge-net filling. */
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struct {
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/* Cleared each use. */
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GSet *edge_visit;
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#ifdef USE_NET_ISLAND_CONNECT
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MemArena *arena;
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#endif
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} edgenet;
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GHash *origvertmap;
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GHash *origedgemap;
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GHash *kedgefacemap;
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GHash *facetrimap;
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KnifeBVH bvh;
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BLI_mempool *kverts;
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BLI_mempool *kedges;
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bool no_cuts; /* A cut has not been made yet. */
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BLI_Stack *undostack;
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BLI_Stack *splitstack; /* Store edge splits by #knife_split_edge. */
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float vthresh;
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float ethresh;
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/* Used for drag-cutting. */
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Vector<KnifeLineHit> linehits;
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/* Data for mouse-position-derived data. */
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KnifePosData curr; /* Current point under the cursor. */
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KnifePosData prev; /* Last added cut (a line draws from the cursor to this). */
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KnifePosData init; /* The first point in the cut-list, used for closing the loop. */
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/* Number of knife edges `kedges`. */
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int totkedge;
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/* Number of knife vertices, `kverts`. */
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int totkvert;
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BLI_mempool *refs;
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KnifeColors colors;
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/* Run by the UI or not. */
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bool is_interactive;
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/* Operator options. */
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bool cut_through; /* Preference, can be modified at runtime (that feature may go). */
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bool only_select; /* Set on initialization. */
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bool select_result; /* Set on initialization. */
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bool is_ortho;
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float ortho_extent;
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float ortho_extent_center[3];
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float clipsta, clipend;
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enum KnifeMode mode;
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bool is_drag_hold;
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int prevmode;
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bool snap_midpoints;
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bool ignore_edge_snapping;
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bool ignore_vert_snapping;
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NumInput num;
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float angle_snapping_increment; /* Degrees */
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/* Use to check if we're currently dragging an angle snapped line. */
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short angle_snapping_mode;
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bool is_angle_snapping;
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bool angle_snapping;
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float angle;
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/* Relative angle snapping reference edge. */
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KnifeEdge *snap_ref_edge;
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int snap_ref_edges_count;
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int snap_edge; /* Used by #KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE to choose an edge for snapping. */
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short constrain_axis;
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short constrain_axis_mode;
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bool axis_constrained;
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char axis_string[2];
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short dist_angle_mode;
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bool show_dist_angle;
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KnifeMeasureData mdata; /* Data for distance and angle drawing calculations. */
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KnifeUndoFrame *undo; /* Current undo frame. */
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bool is_drag_undo;
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bool depth_test;
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};
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enum {
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KNF_MODAL_CANCEL = 1,
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KNF_MODAL_CONFIRM,
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KNF_MODAL_UNDO,
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KNF_MODAL_MIDPOINT_ON,
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KNF_MODAL_MIDPOINT_OFF,
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KNF_MODAL_NEW_CUT,
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KNF_MODAL_IGNORE_SNAP_ON,
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KNF_MODAL_IGNORE_SNAP_OFF,
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KNF_MODAL_ADD_CUT,
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KNF_MODAL_ANGLE_SNAP_TOGGLE,
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KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE,
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KNF_MODAL_CUT_THROUGH_TOGGLE,
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KNF_MODAL_SHOW_DISTANCE_ANGLE_TOGGLE,
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KNF_MODAL_DEPTH_TEST_TOGGLE,
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KNF_MODAL_PANNING,
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KNF_MODAL_X_AXIS,
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KNF_MODAL_Y_AXIS,
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KNF_MODAL_Z_AXIS,
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KNF_MODAL_ADD_CUT_CLOSED,
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};
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enum {
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KNF_CONSTRAIN_ANGLE_MODE_NONE = 0,
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KNF_CONSTRAIN_ANGLE_MODE_SCREEN = 1,
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KNF_CONSTRAIN_ANGLE_MODE_RELATIVE = 2
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};
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enum {
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KNF_CONSTRAIN_AXIS_NONE = 0,
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KNF_CONSTRAIN_AXIS_X = 1,
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KNF_CONSTRAIN_AXIS_Y = 2,
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KNF_CONSTRAIN_AXIS_Z = 3
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};
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enum {
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KNF_CONSTRAIN_AXIS_MODE_NONE = 0,
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KNF_CONSTRAIN_AXIS_MODE_GLOBAL = 1,
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KNF_CONSTRAIN_AXIS_MODE_LOCAL = 2
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};
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enum {
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KNF_MEASUREMENT_NONE = 0,
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KNF_MEASUREMENT_BOTH = 1,
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KNF_MEASUREMENT_DISTANCE = 2,
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KNF_MEASUREMENT_ANGLE = 3
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};
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/* -------------------------------------------------------------------- */
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/** \name Drawing
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* \{ */
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static void knife_draw_line(const KnifeTool_OpData *kcd, const uchar color[3])
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{
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if (compare_v3v3(kcd->prev.cage, kcd->curr.cage, KNIFE_FLT_EPSBIG)) {
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return;
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}
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const float3 dir = math::normalize(kcd->curr.cage - kcd->prev.cage) * kcd->vc.v3d->clip_end;
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const float3 v1 = kcd->prev.cage + dir;
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const float3 v2 = kcd->prev.cage - dir;
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uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
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immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
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immUniformColor3ubv(color);
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GPU_line_width(2.0);
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immBegin(GPU_PRIM_LINES, 2);
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immVertex3fv(pos, v1);
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immVertex3fv(pos, v2);
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immEnd();
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immUnbindProgram();
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}
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static void knifetool_draw_angle_snapping(const KnifeTool_OpData *kcd)
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{
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uchar color[3];
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UI_GetThemeColor3ubv(TH_TRANSFORM, color);
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knife_draw_line(kcd, color);
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}
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static void knifetool_draw_orientation_locking(const KnifeTool_OpData *kcd)
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{
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const uchar *color;
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switch (kcd->constrain_axis) {
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case KNF_CONSTRAIN_AXIS_X: {
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color = kcd->colors.xaxis;
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break;
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}
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case KNF_CONSTRAIN_AXIS_Y: {
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color = kcd->colors.yaxis;
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break;
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}
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case KNF_CONSTRAIN_AXIS_Z: {
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color = kcd->colors.zaxis;
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break;
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}
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default: {
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color = kcd->colors.axis_extra;
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break;
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}
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}
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knife_draw_line(kcd, color);
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}
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static void knifetool_draw_visible_distances(const KnifeTool_OpData *kcd)
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{
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GPU_matrix_push_projection();
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GPU_matrix_push();
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GPU_matrix_identity_set();
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wmOrtho2_region_pixelspace(kcd->region);
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uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
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immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
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char numstr[256];
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float numstr_size[2];
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float posit[2];
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const float bg_margin = 4.0f * UI_SCALE_FAC;
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const float font_size = 14.0f;
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const int distance_precision = 4;
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/* Calculate distance and convert to string. */
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const float cut_len = len_v3v3(kcd->prev.cage, kcd->curr.cage);
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const UnitSettings &unit = kcd->scene->unit;
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if (unit.system == USER_UNIT_NONE) {
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SNPRINTF(numstr, "%.*f", distance_precision, cut_len);
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}
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else {
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BKE_unit_value_as_string_scaled(
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numstr, sizeof(numstr), cut_len, distance_precision, B_UNIT_LENGTH, unit, false);
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}
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BLF_enable(blf_mono_font, BLF_ROTATION);
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BLF_size(blf_mono_font, font_size * UI_SCALE_FAC);
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BLF_rotation(blf_mono_font, 0.0f);
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BLF_width_and_height(blf_mono_font, numstr, sizeof(numstr), &numstr_size[0], &numstr_size[1]);
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/* Center text. */
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mid_v2_v2v2(posit, kcd->prev.mval, kcd->curr.mval);
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posit[0] -= numstr_size[0] / 2.0f;
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posit[1] -= numstr_size[1] / 2.0f;
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/* Draw text background. */
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float color_back[4] = {0.0f, 0.0f, 0.0f, 0.5f}; /* TODO: Replace with theme color. */
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immUniformColor4fv(color_back);
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GPU_blend(GPU_BLEND_ALPHA);
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immRectf(pos,
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posit[0] - bg_margin,
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posit[1] - bg_margin,
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posit[0] + bg_margin + numstr_size[0],
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posit[1] + bg_margin + numstr_size[1]);
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GPU_blend(GPU_BLEND_NONE);
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immUnbindProgram();
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/* Draw text. */
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uchar color_text[3];
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UI_GetThemeColor3ubv(TH_TEXT, color_text);
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BLF_color3ubv(blf_mono_font, color_text);
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BLF_position(blf_mono_font, posit[0], posit[1], 0.0f);
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BLF_draw(blf_mono_font, numstr, sizeof(numstr));
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BLF_disable(blf_mono_font, BLF_ROTATION);
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GPU_matrix_pop();
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GPU_matrix_pop_projection();
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}
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static void knifetool_draw_angle(const KnifeTool_OpData *kcd,
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const float start[3],
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const float mid[3],
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const float end[3],
|
|
const float start_ss[2],
|
|
const float mid_ss[2],
|
|
const float end_ss[2],
|
|
const float angle)
|
|
{
|
|
const RegionView3D *rv3d = static_cast<const RegionView3D *>(kcd->region->regiondata);
|
|
const int arc_steps = 24;
|
|
const float arc_size = 64.0f * UI_SCALE_FAC;
|
|
const float bg_margin = 4.0f * UI_SCALE_FAC;
|
|
const float cap_size = 4.0f * UI_SCALE_FAC;
|
|
const float font_size = 14.0f;
|
|
const int angle_precision = 3;
|
|
|
|
/* Angle arc in 3d space. */
|
|
GPU_blend(GPU_BLEND_ALPHA);
|
|
|
|
const uint pos_3d = GPU_vertformat_attr_add(
|
|
immVertexFormat(), "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
|
|
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
|
|
|
|
{
|
|
float dir_tmp[3];
|
|
float ar_coord[3];
|
|
|
|
float dir_a[3];
|
|
float dir_b[3];
|
|
float quat[4];
|
|
float axis[3];
|
|
float arc_angle;
|
|
|
|
Object *ob = kcd->objects[kcd->bvh.ob_index];
|
|
const float inverse_average_scale = 1 / (ob->object_to_world().ptr()[0][0] +
|
|
ob->object_to_world().ptr()[1][1] +
|
|
ob->object_to_world().ptr()[2][2]);
|
|
|
|
const float px_scale =
|
|
3.0f * inverse_average_scale *
|
|
(ED_view3d_pixel_size_no_ui_scale(rv3d, mid) *
|
|
min_fff(arc_size, len_v2v2(start_ss, mid_ss) / 2.0f, len_v2v2(end_ss, mid_ss) / 2.0f));
|
|
|
|
sub_v3_v3v3(dir_a, start, mid);
|
|
sub_v3_v3v3(dir_b, end, mid);
|
|
normalize_v3(dir_a);
|
|
normalize_v3(dir_b);
|
|
|
|
cross_v3_v3v3(axis, dir_a, dir_b);
|
|
arc_angle = angle_normalized_v3v3(dir_a, dir_b);
|
|
|
|
axis_angle_to_quat(quat, axis, arc_angle / arc_steps);
|
|
|
|
copy_v3_v3(dir_tmp, dir_a);
|
|
|
|
immUniformThemeColor3(TH_WIRE);
|
|
GPU_line_width(1.0);
|
|
|
|
immBegin(GPU_PRIM_LINE_STRIP, arc_steps + 1);
|
|
for (int j = 0; j <= arc_steps; j++) {
|
|
madd_v3_v3v3fl(ar_coord, mid, dir_tmp, px_scale);
|
|
mul_qt_v3(quat, dir_tmp);
|
|
|
|
immVertex3fv(pos_3d, ar_coord);
|
|
}
|
|
immEnd();
|
|
}
|
|
|
|
immUnbindProgram();
|
|
|
|
/* Angle text and background in 2d space. */
|
|
GPU_matrix_push_projection();
|
|
GPU_matrix_push();
|
|
GPU_matrix_identity_set();
|
|
wmOrtho2_region_pixelspace(kcd->region);
|
|
|
|
uint pos_2d = GPU_vertformat_attr_add(
|
|
immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
|
|
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
|
|
|
|
/* Angle as string. */
|
|
char numstr[256];
|
|
float numstr_size[2];
|
|
float posit[2];
|
|
|
|
const UnitSettings &unit = kcd->scene->unit;
|
|
if (unit.system == USER_UNIT_NONE) {
|
|
SNPRINTF(numstr, "%.*f" BLI_STR_UTF8_DEGREE_SIGN, angle_precision, RAD2DEGF(angle));
|
|
}
|
|
else {
|
|
BKE_unit_value_as_string(
|
|
numstr, sizeof(numstr), double(angle), angle_precision, B_UNIT_ROTATION, unit, false);
|
|
}
|
|
|
|
BLF_enable(blf_mono_font, BLF_ROTATION);
|
|
BLF_size(blf_mono_font, font_size * UI_SCALE_FAC);
|
|
BLF_rotation(blf_mono_font, 0.0f);
|
|
BLF_width_and_height(blf_mono_font, numstr, sizeof(numstr), &numstr_size[0], &numstr_size[1]);
|
|
|
|
posit[0] = mid_ss[0] + (cap_size * 2.0f);
|
|
posit[1] = mid_ss[1] - (numstr_size[1] / 2.0f);
|
|
|
|
/* Draw text background. */
|
|
float color_back[4] = {0.0f, 0.0f, 0.0f, 0.5f}; /* TODO: Replace with theme color. */
|
|
immUniformColor4fv(color_back);
|
|
|
|
GPU_blend(GPU_BLEND_ALPHA);
|
|
immRectf(pos_2d,
|
|
posit[0] - bg_margin,
|
|
posit[1] - bg_margin,
|
|
posit[0] + bg_margin + numstr_size[0],
|
|
posit[1] + bg_margin + numstr_size[1]);
|
|
GPU_blend(GPU_BLEND_NONE);
|
|
immUnbindProgram();
|
|
|
|
/* Draw text. */
|
|
uchar color_text[3];
|
|
UI_GetThemeColor3ubv(TH_TEXT, color_text);
|
|
|
|
BLF_color3ubv(blf_mono_font, color_text);
|
|
BLF_position(blf_mono_font, posit[0], posit[1], 0.0f);
|
|
BLF_rotation(blf_mono_font, 0.0f);
|
|
BLF_draw(blf_mono_font, numstr, sizeof(numstr));
|
|
BLF_disable(blf_mono_font, BLF_ROTATION);
|
|
|
|
GPU_matrix_pop();
|
|
GPU_matrix_pop_projection();
|
|
|
|
GPU_blend(GPU_BLEND_NONE);
|
|
}
|
|
|
|
static void knifetool_draw_visible_angles(const KnifeTool_OpData *kcd)
|
|
{
|
|
KnifeVert *kfv;
|
|
KnifeVert *tempkfv;
|
|
KnifeEdge *kfe;
|
|
KnifeEdge *tempkfe;
|
|
|
|
if (kcd->curr.vert) {
|
|
kfv = kcd->curr.vert;
|
|
|
|
float min_angle = FLT_MAX;
|
|
float angle = 0.0f;
|
|
float *end;
|
|
|
|
kfe = static_cast<KnifeEdge *>(((LinkData *)kfv->edges.first)->data);
|
|
LISTBASE_FOREACH (LinkData *, ref, &kfv->edges) {
|
|
tempkfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (tempkfe->v1 != kfv) {
|
|
tempkfv = tempkfe->v1;
|
|
}
|
|
else {
|
|
tempkfv = tempkfe->v2;
|
|
}
|
|
angle = angle_v3v3v3(kcd->prev.cage, kcd->curr.cage, tempkfv->cageco);
|
|
if (angle < min_angle) {
|
|
min_angle = angle;
|
|
kfe = tempkfe;
|
|
end = tempkfv->cageco;
|
|
}
|
|
}
|
|
|
|
if (min_angle > KNIFE_FLT_EPSBIG) {
|
|
/* Last vertex in screen space. */
|
|
float end_ss[2];
|
|
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
|
|
|
|
knifetool_draw_angle(kcd,
|
|
kcd->prev.cage,
|
|
kcd->curr.cage,
|
|
end,
|
|
kcd->prev.mval,
|
|
kcd->curr.mval,
|
|
end_ss,
|
|
min_angle);
|
|
}
|
|
}
|
|
else if (kcd->curr.edge) {
|
|
kfe = kcd->curr.edge;
|
|
|
|
/* Check for most recent cut (if cage is part of previous cut). */
|
|
if (!compare_v3v3(kfe->v1->cageco, kcd->prev.cage, KNIFE_FLT_EPSBIG) &&
|
|
!compare_v3v3(kfe->v2->cageco, kcd->prev.cage, KNIFE_FLT_EPSBIG))
|
|
{
|
|
/* Determine acute angle. */
|
|
float angle1 = angle_v3v3v3(kcd->prev.cage, kcd->curr.cage, kfe->v1->cageco);
|
|
float angle2 = angle_v3v3v3(kcd->prev.cage, kcd->curr.cage, kfe->v2->cageco);
|
|
|
|
float angle;
|
|
float *end;
|
|
if (angle1 < angle2) {
|
|
angle = angle1;
|
|
end = kfe->v1->cageco;
|
|
}
|
|
else {
|
|
angle = angle2;
|
|
end = kfe->v2->cageco;
|
|
}
|
|
|
|
/* Last vertex in screen space. */
|
|
float end_ss[2];
|
|
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
|
|
|
|
knifetool_draw_angle(
|
|
kcd, kcd->prev.cage, kcd->curr.cage, end, kcd->prev.mval, kcd->curr.mval, end_ss, angle);
|
|
}
|
|
}
|
|
|
|
if (kcd->prev.vert) {
|
|
kfv = kcd->prev.vert;
|
|
float min_angle = FLT_MAX;
|
|
float angle = 0.0f;
|
|
float *end;
|
|
|
|
/* If using relative angle snapping, always draw angle to reference edge. */
|
|
if (kcd->is_angle_snapping && kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) {
|
|
kfe = kcd->snap_ref_edge;
|
|
if (kfe->v1 != kfv) {
|
|
tempkfv = kfe->v1;
|
|
}
|
|
else {
|
|
tempkfv = kfe->v2;
|
|
}
|
|
min_angle = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, tempkfv->cageco);
|
|
end = tempkfv->cageco;
|
|
}
|
|
else {
|
|
/* Choose minimum angle edge. */
|
|
kfe = static_cast<KnifeEdge *>(((LinkData *)kfv->edges.first)->data);
|
|
LISTBASE_FOREACH (LinkData *, ref, &kfv->edges) {
|
|
tempkfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (tempkfe->v1 != kfv) {
|
|
tempkfv = tempkfe->v1;
|
|
}
|
|
else {
|
|
tempkfv = tempkfe->v2;
|
|
}
|
|
angle = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, tempkfv->cageco);
|
|
if (angle < min_angle) {
|
|
min_angle = angle;
|
|
kfe = tempkfe;
|
|
end = tempkfv->cageco;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (min_angle > KNIFE_FLT_EPSBIG) {
|
|
/* Last vertex in screen space. */
|
|
float end_ss[2];
|
|
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
|
|
|
|
knifetool_draw_angle(kcd,
|
|
kcd->curr.cage,
|
|
kcd->prev.cage,
|
|
end,
|
|
kcd->curr.mval,
|
|
kcd->prev.mval,
|
|
end_ss,
|
|
min_angle);
|
|
}
|
|
}
|
|
else if (kcd->prev.edge) {
|
|
/* Determine acute angle. */
|
|
kfe = kcd->prev.edge;
|
|
float angle1 = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, kfe->v1->cageco);
|
|
float angle2 = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, kfe->v2->cageco);
|
|
|
|
float angle;
|
|
float *end;
|
|
/* kcd->prev.edge can have one vertex part of cut and one part of mesh? */
|
|
/* This never seems to happen for kcd->curr.edge. */
|
|
if ((!kcd->prev.vert || kcd->prev.vert->v == kfe->v1->v) || kfe->v1->is_cut) {
|
|
angle = angle2;
|
|
end = kfe->v2->cageco;
|
|
}
|
|
else if ((!kcd->prev.vert || kcd->prev.vert->v == kfe->v2->v) || kfe->v2->is_cut) {
|
|
angle = angle1;
|
|
end = kfe->v1->cageco;
|
|
}
|
|
else {
|
|
if (angle1 < angle2) {
|
|
angle = angle1;
|
|
end = kfe->v1->cageco;
|
|
}
|
|
else {
|
|
angle = angle2;
|
|
end = kfe->v2->cageco;
|
|
}
|
|
}
|
|
|
|
/* Last vertex in screen space. */
|
|
float end_ss[2];
|
|
ED_view3d_project_float_global(kcd->region, end, end_ss, V3D_PROJ_TEST_NOP);
|
|
|
|
knifetool_draw_angle(
|
|
kcd, kcd->curr.cage, kcd->prev.cage, end, kcd->curr.mval, kcd->prev.mval, end_ss, angle);
|
|
}
|
|
else if (kcd->mdata.is_stored && !kcd->prev.is_space()) {
|
|
float angle = angle_v3v3v3(kcd->curr.cage, kcd->prev.cage, kcd->mdata.cage);
|
|
knifetool_draw_angle(kcd,
|
|
kcd->curr.cage,
|
|
kcd->prev.cage,
|
|
kcd->mdata.cage,
|
|
kcd->curr.mval,
|
|
kcd->prev.mval,
|
|
kcd->mdata.mval,
|
|
angle);
|
|
}
|
|
}
|
|
|
|
static void knifetool_draw_dist_angle(const KnifeTool_OpData *kcd)
|
|
{
|
|
switch (kcd->dist_angle_mode) {
|
|
case KNF_MEASUREMENT_BOTH: {
|
|
knifetool_draw_visible_distances(kcd);
|
|
knifetool_draw_visible_angles(kcd);
|
|
break;
|
|
}
|
|
case KNF_MEASUREMENT_DISTANCE: {
|
|
knifetool_draw_visible_distances(kcd);
|
|
break;
|
|
}
|
|
case KNF_MEASUREMENT_ANGLE: {
|
|
knifetool_draw_visible_angles(kcd);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Modal loop selection drawing callback. */
|
|
static void knifetool_draw(const bContext * /*C*/, ARegion * /*region*/, void *arg)
|
|
{
|
|
const KnifeTool_OpData *kcd = static_cast<const KnifeTool_OpData *>(arg);
|
|
GPU_depth_test(GPU_DEPTH_NONE);
|
|
|
|
GPU_matrix_push_projection();
|
|
GPU_polygon_offset(1.0f, 1.0f);
|
|
|
|
GPUVertFormat *format = immVertexFormat();
|
|
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
|
|
|
|
/* Draw points. */
|
|
GPU_program_point_size(true);
|
|
immBindBuiltinProgram(GPU_SHADER_3D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_AA);
|
|
|
|
/* Needed for AA points. */
|
|
GPU_blend(GPU_BLEND_ALPHA);
|
|
|
|
if (kcd->prev.vert) {
|
|
immUniformColor3ubv(kcd->colors.point);
|
|
immUniform1f("size", 11 * UI_SCALE_FAC);
|
|
|
|
immBegin(GPU_PRIM_POINTS, 1);
|
|
immVertex3fv(pos, kcd->prev.cage);
|
|
immEnd();
|
|
}
|
|
|
|
if (kcd->prev.bmface || kcd->prev.edge) {
|
|
immUniformColor3ubv(kcd->colors.curpoint);
|
|
immUniform1f("size", 9 * UI_SCALE_FAC);
|
|
|
|
immBegin(GPU_PRIM_POINTS, 1);
|
|
immVertex3fv(pos, kcd->prev.cage);
|
|
immEnd();
|
|
}
|
|
|
|
if (kcd->curr.vert) {
|
|
immUniformColor3ubv(kcd->colors.point);
|
|
immUniform1f("size", 11 * UI_SCALE_FAC);
|
|
|
|
immBegin(GPU_PRIM_POINTS, 1);
|
|
immVertex3fv(pos, kcd->curr.cage);
|
|
immEnd();
|
|
}
|
|
else if (kcd->curr.edge) {
|
|
/* Lines (handled below.) */
|
|
}
|
|
|
|
if (kcd->curr.bmface || kcd->curr.edge) {
|
|
immUniformColor3ubv(kcd->colors.curpoint);
|
|
immUniform1f("size", 9 * UI_SCALE_FAC);
|
|
|
|
immBegin(GPU_PRIM_POINTS, 1);
|
|
immVertex3fv(pos, kcd->curr.cage);
|
|
immEnd();
|
|
}
|
|
|
|
if (kcd->depth_test) {
|
|
GPU_depth_test(GPU_DEPTH_LESS_EQUAL);
|
|
}
|
|
|
|
if (kcd->totkvert > 0) {
|
|
BLI_mempool_iter iter;
|
|
KnifeVert *kfv;
|
|
|
|
immUniformColor3ubv(kcd->colors.point);
|
|
immUniform1f("size", 5.0 * UI_SCALE_FAC);
|
|
|
|
gpu::Batch *batch = immBeginBatchAtMost(GPU_PRIM_POINTS, BLI_mempool_len(kcd->kverts));
|
|
|
|
BLI_mempool_iternew(kcd->kverts, &iter);
|
|
for (kfv = static_cast<KnifeVert *>(BLI_mempool_iterstep(&iter)); kfv;
|
|
kfv = static_cast<KnifeVert *>(BLI_mempool_iterstep(&iter)))
|
|
{
|
|
if (!kfv->is_cut || kfv->is_invalid) {
|
|
continue;
|
|
}
|
|
|
|
immVertex3fv(pos, kfv->cageco);
|
|
}
|
|
|
|
immEnd();
|
|
|
|
GPU_batch_draw(batch);
|
|
GPU_batch_discard(batch);
|
|
}
|
|
|
|
GPU_blend(GPU_BLEND_NONE);
|
|
|
|
immUnbindProgram();
|
|
|
|
/* Draw lines. */
|
|
immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
|
|
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
immUniformColor3ubv(kcd->colors.line);
|
|
GPU_line_width(2.0);
|
|
|
|
immBegin(GPU_PRIM_LINES, 2);
|
|
immVertex3fv(pos, kcd->prev.cage);
|
|
immVertex3fv(pos, kcd->curr.cage);
|
|
immEnd();
|
|
}
|
|
|
|
if (kcd->curr.vert) {
|
|
/* Points (handled above). */
|
|
}
|
|
else if (kcd->curr.edge) {
|
|
immUniformColor3ubv(kcd->colors.edge);
|
|
GPU_line_width(2.0);
|
|
|
|
immBegin(GPU_PRIM_LINES, 2);
|
|
immVertex3fv(pos, kcd->curr.edge->v1->cageco);
|
|
immVertex3fv(pos, kcd->curr.edge->v2->cageco);
|
|
immEnd();
|
|
}
|
|
|
|
if (kcd->totkedge > 0) {
|
|
BLI_mempool_iter iter;
|
|
KnifeEdge *kfe;
|
|
|
|
immUniformColor3ubv(kcd->colors.line);
|
|
GPU_line_width(1.0);
|
|
|
|
gpu::Batch *batch = immBeginBatchAtMost(GPU_PRIM_LINES, BLI_mempool_len(kcd->kedges) * 2);
|
|
|
|
BLI_mempool_iternew(kcd->kedges, &iter);
|
|
for (kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iter)); kfe;
|
|
kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iter)))
|
|
{
|
|
if (!kfe->is_cut || kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
|
|
immVertex3fv(pos, kfe->v1->cageco);
|
|
immVertex3fv(pos, kfe->v2->cageco);
|
|
}
|
|
|
|
immEnd();
|
|
|
|
GPU_batch_draw(batch);
|
|
GPU_batch_discard(batch);
|
|
}
|
|
|
|
/* Draw relative angle snapping reference edge. */
|
|
if (kcd->is_angle_snapping && kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) {
|
|
immUniformColor3ubv(kcd->colors.edge_extra);
|
|
GPU_line_width(2.0);
|
|
|
|
immBegin(GPU_PRIM_LINES, 2);
|
|
immVertex3fv(pos, kcd->snap_ref_edge->v1->cageco);
|
|
immVertex3fv(pos, kcd->snap_ref_edge->v2->cageco);
|
|
immEnd();
|
|
}
|
|
|
|
const int64_t total_hits = kcd->linehits.size();
|
|
if (total_hits > 0) {
|
|
GPU_blend(GPU_BLEND_ALPHA);
|
|
|
|
blender::gpu::VertBuf *vert = GPU_vertbuf_create_with_format(*format);
|
|
GPU_vertbuf_data_alloc(*vert, total_hits);
|
|
|
|
int other_verts_count = 0;
|
|
int snapped_verts_count = 0;
|
|
for (const KnifeLineHit &hit : kcd->linehits) {
|
|
if (hit.v) {
|
|
GPU_vertbuf_attr_set(vert, pos, snapped_verts_count++, hit.cagehit);
|
|
}
|
|
else {
|
|
GPU_vertbuf_attr_set(vert, pos, total_hits - 1 - other_verts_count++, hit.cagehit);
|
|
}
|
|
}
|
|
|
|
gpu::Batch *batch = GPU_batch_create_ex(GPU_PRIM_POINTS, vert, nullptr, GPU_BATCH_OWNS_VBO);
|
|
GPU_batch_program_set_builtin(batch, GPU_SHADER_3D_POINT_UNIFORM_SIZE_UNIFORM_COLOR_AA);
|
|
|
|
/* Draw any snapped verts first. */
|
|
float fcol[4];
|
|
rgba_uchar_to_float(fcol, kcd->colors.point_a);
|
|
GPU_batch_uniform_4fv(batch, "color", fcol);
|
|
GPU_batch_uniform_1f(batch, "size", 11 * UI_SCALE_FAC);
|
|
|
|
if (snapped_verts_count > 0) {
|
|
GPU_batch_draw_range(batch, 0, snapped_verts_count);
|
|
}
|
|
|
|
/* Now draw the rest. */
|
|
rgba_uchar_to_float(fcol, kcd->colors.curpoint_a);
|
|
GPU_batch_uniform_4fv(batch, "color", fcol);
|
|
GPU_batch_uniform_1f(batch, "size", 7 * UI_SCALE_FAC);
|
|
|
|
if (other_verts_count > 0) {
|
|
GPU_batch_draw_range(batch, snapped_verts_count, other_verts_count);
|
|
}
|
|
|
|
GPU_batch_discard(batch);
|
|
|
|
GPU_blend(GPU_BLEND_NONE);
|
|
}
|
|
|
|
immUnbindProgram();
|
|
|
|
GPU_depth_test(GPU_DEPTH_NONE);
|
|
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
if (kcd->is_angle_snapping) {
|
|
knifetool_draw_angle_snapping(kcd);
|
|
}
|
|
else if (kcd->axis_constrained) {
|
|
knifetool_draw_orientation_locking(kcd);
|
|
}
|
|
|
|
if (kcd->show_dist_angle) {
|
|
knifetool_draw_dist_angle(kcd);
|
|
}
|
|
}
|
|
|
|
GPU_matrix_pop_projection();
|
|
|
|
/* Reset default. */
|
|
GPU_depth_test(GPU_DEPTH_LESS_EQUAL);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Header
|
|
* \{ */
|
|
|
|
static void knife_update_header(bContext *C, wmOperator *op, KnifeTool_OpData *kcd)
|
|
{
|
|
auto get_modal_key_str = [&](int id) {
|
|
return WM_modalkeymap_operator_items_to_string(op->type, id, true).value_or("");
|
|
};
|
|
|
|
WorkspaceStatus status(C);
|
|
status.opmodal(IFACE_("Cut"), op->type, KNF_MODAL_ADD_CUT);
|
|
status.opmodal(IFACE_("Close"), op->type, KNF_MODAL_ADD_CUT_CLOSED);
|
|
status.opmodal(IFACE_("Stop"), op->type, KNF_MODAL_NEW_CUT);
|
|
status.opmodal(IFACE_("Confirm"), op->type, KNF_MODAL_CONFIRM);
|
|
status.opmodal(IFACE_("Cancel"), op->type, KNF_MODAL_CANCEL);
|
|
status.opmodal(IFACE_("Undo"), op->type, KNF_MODAL_UNDO);
|
|
status.opmodal(IFACE_("Pan View"), op->type, KNF_MODAL_PANNING);
|
|
status.opmodal(IFACE_("Midpoint Snap"), op->type, KNF_MODAL_MIDPOINT_ON, kcd->snap_midpoints);
|
|
status.opmodal(
|
|
IFACE_("Ignore Snap"), op->type, KNF_MODAL_IGNORE_SNAP_ON, kcd->ignore_edge_snapping);
|
|
status.opmodal(IFACE_("Cut Through"), op->type, KNF_MODAL_CUT_THROUGH_TOGGLE, kcd->cut_through);
|
|
status.opmodal({}, op->type, KNF_MODAL_X_AXIS, kcd->constrain_axis == 1);
|
|
status.opmodal({}, op->type, KNF_MODAL_Y_AXIS, kcd->constrain_axis == 2);
|
|
status.opmodal({}, op->type, KNF_MODAL_Z_AXIS, kcd->constrain_axis == 3);
|
|
status.item(IFACE_("Axis"), ICON_NONE);
|
|
status.opmodal(
|
|
IFACE_("Measure"), op->type, KNF_MODAL_SHOW_DISTANCE_ANGLE_TOGGLE, kcd->show_dist_angle);
|
|
status.opmodal(IFACE_("X-Ray"), op->type, KNF_MODAL_DEPTH_TEST_TOGGLE, !kcd->depth_test);
|
|
|
|
const std::string angle = fmt::format(
|
|
"{}: {:.2f}({:.2f}) ({}{}{}{})",
|
|
IFACE_("Angle Constraint"),
|
|
(kcd->angle >= 0.0f) ? RAD2DEGF(kcd->angle) : 360.0f + RAD2DEGF(kcd->angle),
|
|
(kcd->angle_snapping_increment > KNIFE_MIN_ANGLE_SNAPPING_INCREMENT &&
|
|
kcd->angle_snapping_increment <= KNIFE_MAX_ANGLE_SNAPPING_INCREMENT) ?
|
|
kcd->angle_snapping_increment :
|
|
KNIFE_DEFAULT_ANGLE_SNAPPING_INCREMENT,
|
|
kcd->angle_snapping ?
|
|
((kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_SCREEN) ? "Screen" : "Relative") :
|
|
"OFF", /* TODO: Can this be simplified? */
|
|
(kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) ? " - " : "",
|
|
(kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) ?
|
|
get_modal_key_str(KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE) :
|
|
"",
|
|
(kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) ? ": cycle edge" : "");
|
|
|
|
status.opmodal(angle, op->type, KNF_MODAL_ANGLE_SNAP_TOGGLE);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Knife Object Info Accessors (#KnifeObjectInfo)
|
|
* \{ */
|
|
|
|
static const int *knife_bm_tri_index_get(const KnifeTool_OpData *kcd,
|
|
int ob_index,
|
|
int tri_index,
|
|
int tri_index_buf[3])
|
|
{
|
|
const KnifeObjectInfo *obinfo = &kcd->objects_info[ob_index];
|
|
if (!obinfo->tri_indices.is_empty()) {
|
|
return obinfo->tri_indices[tri_index];
|
|
}
|
|
const std::array<BMLoop *, 3> <ri = obinfo->em->looptris[tri_index];
|
|
for (int i = 0; i < 3; i++) {
|
|
tri_index_buf[i] = BM_elem_index_get(ltri[i]->v);
|
|
}
|
|
return tri_index_buf;
|
|
}
|
|
|
|
static void knife_bm_tri_cagecos_get(const KnifeTool_OpData *kcd,
|
|
int ob_index,
|
|
int tri_index,
|
|
float cos[3][3])
|
|
{
|
|
const KnifeObjectInfo *obinfo = &kcd->objects_info[ob_index];
|
|
int tri_ind_buf[3];
|
|
const int *tri_ind = knife_bm_tri_index_get(kcd, ob_index, tri_index, tri_ind_buf);
|
|
for (int i = 0; i < 3; i++) {
|
|
copy_v3_v3(cos[i], obinfo->positions_cage[tri_ind[i]]);
|
|
}
|
|
}
|
|
|
|
static void knife_bm_tri_cagecos_get_worldspace(const KnifeTool_OpData *kcd,
|
|
int ob_index,
|
|
int tri_index,
|
|
float cos[3][3])
|
|
{
|
|
knife_bm_tri_cagecos_get(kcd, ob_index, tri_index, cos);
|
|
const Object *ob = kcd->objects[ob_index];
|
|
for (int i = 0; i < 3; i++) {
|
|
mul_m4_v3(ob->object_to_world().ptr(), cos[i]);
|
|
}
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Knife BVH Utils
|
|
* \{ */
|
|
|
|
static bool knife_bm_face_is_select(BMFace *f)
|
|
{
|
|
return (BM_elem_flag_test(f, BM_ELEM_SELECT) != 0);
|
|
}
|
|
|
|
static bool knife_bm_face_is_not_hidden(BMFace *f)
|
|
{
|
|
return (BM_elem_flag_test(f, BM_ELEM_HIDDEN) == 0);
|
|
}
|
|
|
|
static void knife_bvh_init(KnifeTool_OpData *kcd)
|
|
{
|
|
Object *ob;
|
|
BMEditMesh *em;
|
|
|
|
/* Test Function. */
|
|
bool (*test_fn)(BMFace *);
|
|
if (kcd->only_select && kcd->cut_through) {
|
|
test_fn = knife_bm_face_is_select;
|
|
}
|
|
else {
|
|
test_fn = knife_bm_face_is_not_hidden;
|
|
}
|
|
|
|
/* Construct BVH Tree. */
|
|
const float epsilon = FLT_EPSILON * 2.0f;
|
|
int tottri = 0;
|
|
int ob_tottri = 0;
|
|
blender::Span<std::array<BMLoop *, 3>> looptris;
|
|
BMFace *f_test = nullptr, *f_test_prev = nullptr;
|
|
bool test_fn_ret = false;
|
|
|
|
/* Calculate tottri. */
|
|
for (Object *ob : kcd->objects) {
|
|
ob_tottri = 0;
|
|
em = BKE_editmesh_from_object(ob);
|
|
|
|
for (int i = 0; i < em->looptris.size(); i++) {
|
|
f_test = em->looptris[i][0]->f;
|
|
if (f_test != f_test_prev) {
|
|
test_fn_ret = test_fn(f_test);
|
|
f_test_prev = f_test;
|
|
}
|
|
|
|
if (test_fn_ret) {
|
|
ob_tottri++;
|
|
}
|
|
}
|
|
|
|
tottri += ob_tottri;
|
|
}
|
|
|
|
kcd->bvh.tree = BLI_bvhtree_new(tottri, epsilon, 8, 8);
|
|
|
|
f_test_prev = nullptr;
|
|
test_fn_ret = false;
|
|
|
|
/* Add triangles for each object.
|
|
* TODO:
|
|
* test_fn can leave large gaps between bvh tree indices.
|
|
* Compacting bvh tree indices may be possible.
|
|
* Don't forget to update #knife_bvh_intersect_plane! */
|
|
tottri = 0;
|
|
for (const int ob_index : kcd->objects.index_range()) {
|
|
ob = kcd->objects[ob_index];
|
|
em = BKE_editmesh_from_object(ob);
|
|
looptris = em->looptris;
|
|
|
|
for (int i = 0; i < em->looptris.size(); i++) {
|
|
|
|
f_test = looptris[i][0]->f;
|
|
if (f_test != f_test_prev) {
|
|
test_fn_ret = test_fn(f_test);
|
|
f_test_prev = f_test;
|
|
}
|
|
|
|
if (!test_fn_ret) {
|
|
continue;
|
|
}
|
|
|
|
float tri_cos[3][3];
|
|
knife_bm_tri_cagecos_get_worldspace(kcd, ob_index, i, tri_cos);
|
|
BLI_bvhtree_insert(kcd->bvh.tree, i + tottri, &tri_cos[0][0], 3);
|
|
}
|
|
|
|
tottri += em->looptris.size();
|
|
}
|
|
|
|
BLI_bvhtree_balance(kcd->bvh.tree);
|
|
}
|
|
|
|
/* Wrapper for #BLI_bvhtree_free. */
|
|
static void knife_bvh_free(KnifeTool_OpData *kcd)
|
|
{
|
|
if (kcd->bvh.tree) {
|
|
BLI_bvhtree_free(kcd->bvh.tree);
|
|
kcd->bvh.tree = nullptr;
|
|
}
|
|
}
|
|
|
|
static void knife_bvh_raycast_cb(void *userdata,
|
|
int index,
|
|
const BVHTreeRay *ray,
|
|
BVHTreeRayHit *hit)
|
|
{
|
|
if (index == -1) {
|
|
return;
|
|
}
|
|
|
|
KnifeTool_OpData *kcd = static_cast<KnifeTool_OpData *>(userdata);
|
|
BMLoop *const *ltri = nullptr;
|
|
Object *ob;
|
|
BMEditMesh *em;
|
|
|
|
float dist;
|
|
bool isect;
|
|
int tottri;
|
|
|
|
tottri = 0;
|
|
int ob_index = 0;
|
|
for (; ob_index < kcd->objects.size(); ob_index++) {
|
|
index -= tottri;
|
|
ob = kcd->objects[ob_index];
|
|
em = BKE_editmesh_from_object(ob);
|
|
tottri = em->looptris.size();
|
|
if (index < tottri) {
|
|
ltri = em->looptris[index].data();
|
|
break;
|
|
}
|
|
}
|
|
BLI_assert(ltri != nullptr);
|
|
|
|
if (kcd->bvh.filter_cb) {
|
|
if (!kcd->bvh.filter_cb(ltri[0]->f, kcd->bvh.filter_data)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
float tri_cos[3][3];
|
|
knife_bm_tri_cagecos_get_worldspace(kcd, ob_index, index, tri_cos);
|
|
isect = (ray->radius > 0.0f ?
|
|
isect_ray_tri_epsilon_v3(
|
|
ray->origin, ray->direction, UNPACK3(tri_cos), &dist, nullptr, ray->radius) :
|
|
#ifdef USE_KDOPBVH_WATERTIGHT
|
|
isect_ray_tri_watertight_v3(
|
|
ray->origin, ray->isect_precalc, UNPACK3(tri_cos), &dist, nullptr));
|
|
#else
|
|
isect_ray_tri_v3(ray->origin, ray->direction, UNPACK3(tri_cos), &dist, nullptr);
|
|
#endif
|
|
|
|
if (isect && dist < hit->dist) {
|
|
madd_v3_v3v3fl(hit->co, ray->origin, ray->direction, dist);
|
|
|
|
/* Discard clipped points. */
|
|
if (RV3D_CLIPPING_ENABLED(kcd->vc.v3d, kcd->vc.rv3d) &&
|
|
ED_view3d_clipping_test(kcd->vc.rv3d, hit->co, false))
|
|
{
|
|
return;
|
|
}
|
|
|
|
hit->dist = dist;
|
|
hit->index = index;
|
|
|
|
copy_v3_v3(hit->no, ltri[0]->f->no);
|
|
|
|
kcd->bvh.looptris = em->looptris;
|
|
kcd->bvh.ob_index = ob_index;
|
|
}
|
|
}
|
|
|
|
/* `co` is expected to be in world space. */
|
|
static BMFace *knife_bvh_raycast(KnifeTool_OpData *kcd,
|
|
const float co[3],
|
|
const float dir[3],
|
|
const float radius,
|
|
float *r_dist,
|
|
float r_cagehit[3],
|
|
int *r_ob_index)
|
|
{
|
|
BMFace *face;
|
|
BVHTreeRayHit hit;
|
|
const float dist = r_dist ? *r_dist : FLT_MAX;
|
|
hit.dist = dist;
|
|
hit.index = -1;
|
|
|
|
BLI_bvhtree_ray_cast(kcd->bvh.tree, co, dir, radius, &hit, knife_bvh_raycast_cb, kcd);
|
|
|
|
/* Handle Hit */
|
|
if (hit.index != -1 && hit.dist != dist) {
|
|
face = kcd->bvh.looptris[hit.index][0]->f;
|
|
|
|
if (r_cagehit) {
|
|
copy_v3_v3(r_cagehit, hit.co);
|
|
}
|
|
|
|
if (r_dist) {
|
|
*r_dist = hit.dist;
|
|
}
|
|
|
|
if (r_ob_index) {
|
|
*r_ob_index = kcd->bvh.ob_index;
|
|
}
|
|
|
|
return face;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* `co` is expected to be in world space. */
|
|
static BMFace *knife_bvh_raycast_filter(KnifeTool_OpData *kcd,
|
|
const float co[3],
|
|
const float dir[3],
|
|
const float radius,
|
|
float *r_dist,
|
|
float r_cagehit[3],
|
|
int *r_ob_index,
|
|
bool (*filter_cb)(BMFace *f, void *userdata),
|
|
void *filter_userdata)
|
|
{
|
|
kcd->bvh.filter_cb = filter_cb;
|
|
kcd->bvh.filter_data = filter_userdata;
|
|
|
|
BMFace *face = knife_bvh_raycast(kcd, co, dir, radius, r_dist, r_cagehit, r_ob_index);
|
|
|
|
kcd->bvh.filter_cb = nullptr;
|
|
kcd->bvh.filter_data = nullptr;
|
|
|
|
return face;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Geometry Utils
|
|
* \{ */
|
|
|
|
static void knife_project_v2(const KnifeTool_OpData *kcd, const float co[3], float sco[2])
|
|
{
|
|
ED_view3d_project_float_global(kcd->region, co, sco, V3D_PROJ_TEST_NOP);
|
|
}
|
|
|
|
/* Ray is returned in world space. */
|
|
static void knife_input_ray_segment(const KnifeTool_OpData *kcd,
|
|
const float mval[2],
|
|
float r_origin[3],
|
|
float r_end[3])
|
|
{
|
|
/* Unproject to find view ray. */
|
|
ED_view3d_win_to_segment_clipped(
|
|
kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, mval, r_origin, r_end, false);
|
|
}
|
|
|
|
/* No longer used, but may be useful in the future. */
|
|
static void UNUSED_FUNCTION(knifetool_recast_cageco)(KnifeTool_OpData *kcd,
|
|
float mval[3],
|
|
float r_cage[3])
|
|
{
|
|
float origin[3];
|
|
float origin_ofs[3];
|
|
float ray[3], ray_normal[3];
|
|
|
|
knife_input_ray_segment(kcd, mval, origin, origin_ofs);
|
|
|
|
sub_v3_v3v3(ray, origin_ofs, origin);
|
|
normalize_v3_v3(ray_normal, ray);
|
|
|
|
knife_bvh_raycast(kcd, origin, ray_normal, 0.0f, nullptr, r_cage, nullptr);
|
|
}
|
|
|
|
static bool knife_verts_edge_in_face(KnifeVert *v1, KnifeVert *v2, BMFace *f)
|
|
{
|
|
bool v1_inside, v2_inside;
|
|
bool v1_inface, v2_inface;
|
|
BMLoop *l1, *l2;
|
|
|
|
if (!f || !v1 || !v2) {
|
|
return false;
|
|
}
|
|
|
|
l1 = v1->v ? BM_face_vert_share_loop(f, v1->v) : nullptr;
|
|
l2 = v2->v ? BM_face_vert_share_loop(f, v2->v) : nullptr;
|
|
|
|
if ((l1 && l2) && BM_loop_is_adjacent(l1, l2)) {
|
|
/* Boundary-case, always false to avoid edge-in-face checks below. */
|
|
return false;
|
|
}
|
|
|
|
/* Find out if v1 and v2, if set, are part of the face. */
|
|
v1_inface = (l1 != nullptr);
|
|
v2_inface = (l2 != nullptr);
|
|
|
|
/* BM_face_point_inside_test uses best-axis projection so this isn't most accurate test... */
|
|
v1_inside = v1_inface ? false : BM_face_point_inside_test(f, v1->co);
|
|
v2_inside = v2_inface ? false : BM_face_point_inside_test(f, v2->co);
|
|
if ((v1_inface && v2_inside) || (v2_inface && v1_inside) || (v1_inside && v2_inside)) {
|
|
return true;
|
|
}
|
|
|
|
if (v1_inface && v2_inface) {
|
|
float mid[3];
|
|
/* Can have case where v1 and v2 are on shared chain between two faces.
|
|
* BM_face_splits_check_legal does visibility and self-intersection tests,
|
|
* but it is expensive and maybe a bit buggy, so use a simple
|
|
* "is the midpoint in the face" test. */
|
|
mid_v3_v3v3(mid, v1->co, v2->co);
|
|
return BM_face_point_inside_test(f, mid);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void knife_recalc_ortho(KnifeTool_OpData *kcd)
|
|
{
|
|
kcd->is_ortho = ED_view3d_clip_range_get(
|
|
kcd->vc.depsgraph, kcd->vc.v3d, kcd->vc.rv3d, true, &kcd->clipsta, &kcd->clipend);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Knife Element Utils
|
|
*
|
|
* Currently only used in #knife_find_line_hits.
|
|
* \{ */
|
|
|
|
static BMElem *bm_elem_from_knife_vert(KnifeVert *kfv, KnifeEdge **r_kfe)
|
|
{
|
|
BMElem *ele_test;
|
|
KnifeEdge *kfe = nullptr;
|
|
|
|
/* vert? */
|
|
ele_test = (BMElem *)kfv->v;
|
|
|
|
if (r_kfe || ele_test == nullptr) {
|
|
if (kfv->v == nullptr) {
|
|
LISTBASE_FOREACH (LinkData *, ref, &kfv->edges) {
|
|
kfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (kfe->e) {
|
|
if (r_kfe) {
|
|
*r_kfe = kfe;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* edge? */
|
|
if (ele_test == nullptr) {
|
|
if (kfe) {
|
|
ele_test = (BMElem *)kfe->e;
|
|
}
|
|
}
|
|
|
|
/* face? */
|
|
if (ele_test == nullptr) {
|
|
if (BLI_listbase_is_single(&kfe->faces)) {
|
|
ele_test = static_cast<BMElem *>(((LinkData *)kfe->faces.first)->data);
|
|
}
|
|
}
|
|
|
|
return ele_test;
|
|
}
|
|
|
|
static BMElem *bm_elem_from_knife_edge(KnifeEdge *kfe)
|
|
{
|
|
BMElem *ele_test;
|
|
|
|
ele_test = (BMElem *)kfe->e;
|
|
|
|
if (ele_test == nullptr) {
|
|
ele_test = (BMElem *)kfe->basef;
|
|
}
|
|
|
|
return ele_test;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Knife Element List Utils
|
|
* \{ */
|
|
|
|
static ListBase *knife_empty_list(KnifeTool_OpData *kcd)
|
|
{
|
|
ListBase *list;
|
|
|
|
list = static_cast<ListBase *>(BLI_memarena_alloc(kcd->arena, sizeof(ListBase)));
|
|
BLI_listbase_clear(list);
|
|
return list;
|
|
}
|
|
|
|
static void knife_append_list(KnifeTool_OpData *kcd, ListBase *lst, void *elem)
|
|
{
|
|
LinkData *ref;
|
|
|
|
ref = static_cast<LinkData *>(BLI_mempool_calloc(kcd->refs));
|
|
ref->data = elem;
|
|
BLI_addtail(lst, ref);
|
|
}
|
|
|
|
static LinkData *find_ref(ListBase *lb, void *ref)
|
|
{
|
|
LISTBASE_FOREACH (LinkData *, ref1, lb) {
|
|
if (ref1->data == ref) {
|
|
return ref1;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static void knife_append_list_no_dup(KnifeTool_OpData *kcd, ListBase *lst, void *elem)
|
|
{
|
|
if (!find_ref(lst, elem)) {
|
|
knife_append_list(kcd, lst, elem);
|
|
}
|
|
}
|
|
|
|
static void knife_add_to_vert_edges(KnifeTool_OpData *kcd, KnifeEdge *kfe)
|
|
{
|
|
knife_append_list(kcd, &kfe->v1->edges, kfe);
|
|
knife_append_list(kcd, &kfe->v2->edges, kfe);
|
|
}
|
|
|
|
/* Add faces of an edge to a KnifeVert's faces list. No checks for duplicates. */
|
|
static void knife_add_edge_faces_to_vert(KnifeTool_OpData *kcd, KnifeVert *kfv, BMEdge *e)
|
|
{
|
|
BMIter bmiter;
|
|
BMFace *f;
|
|
|
|
BM_ITER_ELEM (f, &bmiter, e, BM_FACES_OF_EDGE) {
|
|
knife_append_list(kcd, &kfv->faces, f);
|
|
}
|
|
}
|
|
|
|
/* Find a face in common in the two faces lists.
|
|
* If more than one, return the first; if none, return nullptr. */
|
|
static BMFace *knife_find_common_face(ListBase *faces1, ListBase *faces2)
|
|
{
|
|
LISTBASE_FOREACH (LinkData *, ref1, faces1) {
|
|
LISTBASE_FOREACH (LinkData *, ref2, faces2) {
|
|
if (ref1->data == ref2->data) {
|
|
return (BMFace *)(ref1->data);
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Knife Element Creation
|
|
* \{ */
|
|
|
|
static KnifeVert *new_knife_vert(KnifeTool_OpData *kcd, const float co[3], const float cageco[3])
|
|
{
|
|
KnifeVert *kfv = static_cast<KnifeVert *>(BLI_mempool_calloc(kcd->kverts));
|
|
|
|
kcd->totkvert++;
|
|
|
|
copy_v3_v3(kfv->co, co);
|
|
copy_v3_v3(kfv->cageco, cageco);
|
|
|
|
return kfv;
|
|
}
|
|
|
|
static KnifeEdge *new_knife_edge(KnifeTool_OpData *kcd)
|
|
{
|
|
KnifeEdge *kfe = static_cast<KnifeEdge *>(BLI_mempool_calloc(kcd->kedges));
|
|
kcd->totkedge++;
|
|
return kfe;
|
|
}
|
|
|
|
/* Get a KnifeVert wrapper for an existing BMVert. */
|
|
static KnifeVert *get_bm_knife_vert(KnifeTool_OpData *kcd, BMVert *v, int ob_index)
|
|
{
|
|
KnifeVert *kfv = static_cast<KnifeVert *>(BLI_ghash_lookup(kcd->origvertmap, v));
|
|
const float *cageco;
|
|
|
|
if (!kfv) {
|
|
BMIter bmiter;
|
|
BMFace *f;
|
|
|
|
if (BM_elem_index_get(v) >= 0) {
|
|
cageco = kcd->objects_info[ob_index].positions_cage[BM_elem_index_get(v)];
|
|
}
|
|
else {
|
|
cageco = v->co;
|
|
}
|
|
|
|
float cageco_ws[3];
|
|
Object *ob = kcd->objects[ob_index];
|
|
mul_v3_m4v3(cageco_ws, ob->object_to_world().ptr(), cageco);
|
|
|
|
kfv = new_knife_vert(kcd, v->co, cageco_ws);
|
|
kfv->v = v;
|
|
kfv->ob_index = ob_index;
|
|
|
|
BLI_ghash_insert(kcd->origvertmap, v, kfv);
|
|
BM_ITER_ELEM (f, &bmiter, v, BM_FACES_OF_VERT) {
|
|
knife_append_list(kcd, &kfv->faces, f);
|
|
}
|
|
}
|
|
|
|
return kfv;
|
|
}
|
|
|
|
/* Get a KnifeEdge wrapper for an existing BMEdge. */
|
|
static KnifeEdge *get_bm_knife_edge(KnifeTool_OpData *kcd, BMEdge *e, int ob_index)
|
|
{
|
|
KnifeEdge *kfe = static_cast<KnifeEdge *>(BLI_ghash_lookup(kcd->origedgemap, e));
|
|
if (!kfe) {
|
|
BMIter bmiter;
|
|
BMFace *f;
|
|
|
|
kfe = new_knife_edge(kcd);
|
|
kfe->e = e;
|
|
kfe->v1 = get_bm_knife_vert(kcd, e->v1, ob_index);
|
|
kfe->v2 = get_bm_knife_vert(kcd, e->v2, ob_index);
|
|
|
|
knife_add_to_vert_edges(kcd, kfe);
|
|
|
|
BLI_ghash_insert(kcd->origedgemap, e, kfe);
|
|
|
|
BM_ITER_ELEM (f, &bmiter, e, BM_FACES_OF_EDGE) {
|
|
knife_append_list(kcd, &kfe->faces, f);
|
|
}
|
|
}
|
|
|
|
return kfe;
|
|
}
|
|
|
|
static ListBase *knife_get_face_kedges(KnifeTool_OpData *kcd, int ob_index, BMFace *f)
|
|
{
|
|
ListBase *list = static_cast<ListBase *>(BLI_ghash_lookup(kcd->kedgefacemap, f));
|
|
|
|
if (!list) {
|
|
BMIter bmiter;
|
|
BMEdge *e;
|
|
|
|
list = knife_empty_list(kcd);
|
|
|
|
BM_ITER_ELEM (e, &bmiter, f, BM_EDGES_OF_FACE) {
|
|
knife_append_list(kcd, list, get_bm_knife_edge(kcd, e, ob_index));
|
|
}
|
|
|
|
BLI_ghash_insert(kcd->kedgefacemap, f, list);
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
static void knife_edge_append_face(KnifeTool_OpData *kcd, KnifeEdge *kfe, BMFace *f)
|
|
{
|
|
knife_append_list(kcd, knife_get_face_kedges(kcd, kfe->v1->ob_index, f), kfe);
|
|
knife_append_list(kcd, &kfe->faces, f);
|
|
}
|
|
|
|
static KnifeVert *knife_split_edge(KnifeTool_OpData *kcd,
|
|
KnifeEdge *kfe,
|
|
const float co[3],
|
|
const float cageco[3],
|
|
KnifeEdge **r_kfe)
|
|
{
|
|
KnifeEdge *newkfe = new_knife_edge(kcd);
|
|
LinkData *ref;
|
|
BMFace *f;
|
|
|
|
newkfe->v1 = kfe->v1;
|
|
newkfe->v2 = new_knife_vert(kcd, co, cageco);
|
|
newkfe->v2->ob_index = kfe->v1->ob_index;
|
|
newkfe->v2->is_cut = true;
|
|
if (kfe->e) {
|
|
knife_add_edge_faces_to_vert(kcd, newkfe->v2, kfe->e);
|
|
}
|
|
else {
|
|
/* kfe cuts across an existing face.
|
|
* If v1 and v2 are in multiple faces together (e.g., if they
|
|
* are in doubled polys) then this arbitrarily chooses one of them. */
|
|
f = knife_find_common_face(&kfe->v1->faces, &kfe->v2->faces);
|
|
if (f) {
|
|
knife_append_list(kcd, &newkfe->v2->faces, f);
|
|
}
|
|
}
|
|
newkfe->basef = kfe->basef;
|
|
|
|
ref = find_ref(&kfe->v1->edges, kfe);
|
|
BLI_remlink(&kfe->v1->edges, ref);
|
|
|
|
kfe->v1 = newkfe->v2;
|
|
kfe->v1->is_splitting = true;
|
|
BLI_addtail(&kfe->v1->edges, ref);
|
|
|
|
LISTBASE_FOREACH (LinkData *, ref, &kfe->faces) {
|
|
knife_edge_append_face(kcd, newkfe, static_cast<BMFace *>(ref->data));
|
|
}
|
|
|
|
knife_add_to_vert_edges(kcd, newkfe);
|
|
|
|
newkfe->is_cut = kfe->is_cut;
|
|
newkfe->e = kfe->e;
|
|
|
|
newkfe->splits++;
|
|
kfe->splits++;
|
|
|
|
kcd->undo->splits++;
|
|
|
|
BLI_stack_push(kcd->splitstack, (void *)&kfe);
|
|
BLI_stack_push(kcd->splitstack, (void *)&newkfe);
|
|
|
|
*r_kfe = newkfe;
|
|
|
|
return newkfe->v2;
|
|
}
|
|
|
|
/* Rejoin two edges split by #knife_split_edge. */
|
|
static void knife_join_edge(KnifeEdge *newkfe, KnifeEdge *kfe)
|
|
{
|
|
newkfe->is_invalid = true;
|
|
newkfe->v2->is_invalid = true;
|
|
|
|
kfe->v1 = newkfe->v1;
|
|
|
|
kfe->splits--;
|
|
kfe->v1->is_splitting = false;
|
|
kfe->v2->is_splitting = false;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Cut/Hit Utils
|
|
* \{ */
|
|
|
|
static void knife_snap_curr(KnifeTool_OpData *kcd,
|
|
const float2 &mval,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir);
|
|
|
|
/* User has just clicked for first time or first time after a restart (E key).
|
|
* Copy the current position data into prev. */
|
|
static void knife_start_cut(KnifeTool_OpData *kcd, const float2 &mval)
|
|
{
|
|
float3 ray_orig;
|
|
float3 ray_dir;
|
|
ED_view3d_win_to_ray_clipped(
|
|
kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, mval, ray_orig, ray_dir, false);
|
|
|
|
knife_snap_curr(kcd, mval, ray_orig, ray_dir);
|
|
kcd->prev = kcd->curr;
|
|
kcd->mdata.is_stored = false;
|
|
}
|
|
|
|
static void linehit_to_knifepos(KnifePosData *kpos, KnifeLineHit *lh)
|
|
{
|
|
kpos->bmface = lh->f;
|
|
kpos->vert = lh->v;
|
|
kpos->edge = lh->kfe;
|
|
copy_v3_v3(kpos->cage, lh->cagehit);
|
|
copy_v2_v2(kpos->mval, lh->schit);
|
|
}
|
|
|
|
/* Primary key: lambda along cut
|
|
* Secondary key: lambda along depth
|
|
* Tertiary key: pointer comparisons of verts if both snapped to verts
|
|
*/
|
|
static int linehit_compare(const KnifeLineHit &lh1, const KnifeLineHit &lh2)
|
|
{
|
|
if (lh1.l < lh2.l) {
|
|
return true;
|
|
}
|
|
if (lh1.l > lh2.l) {
|
|
return false;
|
|
}
|
|
if (lh1.m < lh2.m) {
|
|
return true;
|
|
}
|
|
if (lh1.m > lh2.m) {
|
|
return false;
|
|
}
|
|
if (lh1.v < lh2.v) {
|
|
return true;
|
|
}
|
|
if (lh1.v > lh2.v) {
|
|
return false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Sort linehits by distance along cut line, and secondarily from
|
|
* front to back (from eye), and tertiarily by snap vertex,
|
|
* and remove any duplicates.
|
|
*/
|
|
static void prepare_linehits_for_cut(KnifeTool_OpData *kcd)
|
|
{
|
|
bool is_double = false;
|
|
|
|
if (kcd->linehits.is_empty()) {
|
|
return;
|
|
}
|
|
|
|
std::sort(kcd->linehits.begin(), kcd->linehits.end(), linehit_compare);
|
|
|
|
/* Remove any edge hits that are preceded or followed
|
|
* by a vertex hit that is very near. Mark such edge hits using
|
|
* l == -1 and then do another pass to actually remove.
|
|
* Also remove all but one of a series of vertex hits for the same vertex. */
|
|
const int64_t total_hits = kcd->linehits.size();
|
|
for (int i = 0; i < total_hits; i++) {
|
|
KnifeLineHit *lhi = &kcd->linehits[i];
|
|
if (lhi->v == nullptr) {
|
|
continue;
|
|
}
|
|
|
|
for (int j = i - 1; j >= 0; j--) {
|
|
KnifeLineHit *lhj = &kcd->linehits[j];
|
|
if (!lhj->kfe || fabsf(lhi->l - lhj->l) > KNIFE_FLT_EPSBIG ||
|
|
fabsf(lhi->m - lhj->m) > KNIFE_FLT_EPSBIG)
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (lhi->kfe == lhj->kfe) {
|
|
lhj->l = -1.0f;
|
|
is_double = true;
|
|
}
|
|
}
|
|
for (int j = i + 1; j < total_hits; j++) {
|
|
KnifeLineHit *lhj = &kcd->linehits[j];
|
|
if (fabsf(lhi->l - lhj->l) > KNIFE_FLT_EPSBIG || fabsf(lhi->m - lhj->m) > KNIFE_FLT_EPSBIG) {
|
|
break;
|
|
}
|
|
if ((lhj->kfe && (lhi->kfe == lhj->kfe)) || (lhi->v == lhj->v)) {
|
|
lhj->l = -1.0f;
|
|
is_double = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (is_double) {
|
|
/* Delete-in-place loop: copying from pos j to pos i+1. */
|
|
int i = 0;
|
|
int j = 1;
|
|
while (j < total_hits) {
|
|
KnifeLineHit *lhi = &kcd->linehits[i];
|
|
KnifeLineHit *lhj = &kcd->linehits[j];
|
|
if (lhj->l == -1.0f) {
|
|
j++; /* Skip copying this one. */
|
|
}
|
|
else {
|
|
/* Copy unless a no-op. */
|
|
if (lhi->l == -1.0f) {
|
|
/* Could happen if linehits[0] is being deleted. */
|
|
memcpy(&kcd->linehits[i], &kcd->linehits[j], sizeof(KnifeLineHit));
|
|
}
|
|
else {
|
|
if (i + 1 != j) {
|
|
memcpy(&kcd->linehits[i + 1], &kcd->linehits[j], sizeof(KnifeLineHit));
|
|
}
|
|
i++;
|
|
}
|
|
j++;
|
|
}
|
|
}
|
|
kcd->linehits.resize(i + 1);
|
|
}
|
|
}
|
|
|
|
/* Add hit to list of hits in facehits[f], where facehits is a map, if not already there. */
|
|
static void add_hit_to_facehits(KnifeTool_OpData *kcd,
|
|
GHash *facehits,
|
|
BMFace *f,
|
|
KnifeLineHit *hit)
|
|
{
|
|
ListBase *list = static_cast<ListBase *>(BLI_ghash_lookup(facehits, f));
|
|
|
|
if (!list) {
|
|
list = knife_empty_list(kcd);
|
|
BLI_ghash_insert(facehits, f, list);
|
|
}
|
|
knife_append_list_no_dup(kcd, list, hit);
|
|
}
|
|
|
|
/**
|
|
* Special purpose function, if the linehit is connected to a real edge/vert.
|
|
* Return true if \a co is outside the face.
|
|
*/
|
|
static bool knife_add_single_cut__is_linehit_outside_face(BMFace *f,
|
|
const KnifeLineHit *lh,
|
|
const float co[3])
|
|
{
|
|
|
|
if (lh->v && lh->v->v) {
|
|
BMLoop *l; /* side-of-loop */
|
|
if ((l = BM_face_vert_share_loop(f, lh->v->v)) &&
|
|
(BM_loop_point_side_of_loop_test(l, co) < 0.0f))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
else if (lh->kfe && lh->kfe->e) {
|
|
BMLoop *l; /* side-of-edge */
|
|
if ((l = BM_face_edge_share_loop(f, lh->kfe->e)) &&
|
|
(BM_loop_point_side_of_edge_test(l, co) < 0.0f))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void knife_add_single_cut(KnifeTool_OpData *kcd,
|
|
KnifeLineHit *lh1,
|
|
KnifeLineHit *lh2,
|
|
BMFace *f)
|
|
{
|
|
KnifeEdge *kfe, *kfe2;
|
|
BMEdge *e_base;
|
|
|
|
if ((lh1->v && lh1->v == lh2->v) || (lh1->kfe && lh1->kfe == lh2->kfe)) {
|
|
return;
|
|
}
|
|
|
|
/* If the cut is on an edge. */
|
|
if ((lh1->v && lh2->v) && (lh1->v->v && lh2->v && lh2->v->v) &&
|
|
(e_base = BM_edge_exists(lh1->v->v, lh2->v->v)))
|
|
{
|
|
return;
|
|
}
|
|
if (knife_add_single_cut__is_linehit_outside_face(f, lh1, lh2->hit) ||
|
|
knife_add_single_cut__is_linehit_outside_face(f, lh2, lh1->hit))
|
|
{
|
|
return;
|
|
}
|
|
|
|
/* Check if edge actually lies within face (might not, if this face is concave). */
|
|
if ((lh1->v && !lh1->kfe) && (lh2->v && !lh2->kfe)) {
|
|
if (!knife_verts_edge_in_face(lh1->v, lh2->v, f)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
kfe = new_knife_edge(kcd);
|
|
kfe->is_cut = true;
|
|
kfe->basef = f;
|
|
|
|
if (lh1->v) {
|
|
kfe->v1 = lh1->v;
|
|
}
|
|
else if (lh1->kfe) {
|
|
kfe->v1 = knife_split_edge(kcd, lh1->kfe, lh1->hit, lh1->cagehit, &kfe2);
|
|
lh1->v = kfe->v1; /* Record the #KnifeVert for this hit. */
|
|
}
|
|
else {
|
|
BLI_assert(lh1->f);
|
|
kfe->v1 = new_knife_vert(kcd, lh1->hit, lh1->cagehit);
|
|
kfe->v1->ob_index = lh1->ob_index;
|
|
kfe->v1->is_cut = true;
|
|
knife_append_list(kcd, &kfe->v1->faces, lh1->f);
|
|
lh1->v = kfe->v1; /* Record the #KnifeVert for this hit. */
|
|
}
|
|
|
|
if (lh2->v) {
|
|
kfe->v2 = lh2->v;
|
|
}
|
|
else if (lh2->kfe) {
|
|
kfe->v2 = knife_split_edge(kcd, lh2->kfe, lh2->hit, lh2->cagehit, &kfe2);
|
|
lh2->v = kfe->v2; /* Future uses of lh2 won't split again. */
|
|
}
|
|
else {
|
|
BLI_assert(lh2->f);
|
|
kfe->v2 = new_knife_vert(kcd, lh2->hit, lh2->cagehit);
|
|
kfe->v2->ob_index = lh2->ob_index;
|
|
kfe->v2->is_cut = true;
|
|
knife_append_list(kcd, &kfe->v2->faces, lh2->f);
|
|
lh2->v = kfe->v2; /* Record the KnifeVert for this hit. */
|
|
}
|
|
|
|
knife_add_to_vert_edges(kcd, kfe);
|
|
|
|
if (kfe->basef && !find_ref(&kfe->faces, kfe->basef)) {
|
|
knife_edge_append_face(kcd, kfe, kfe->basef);
|
|
}
|
|
|
|
/* Update current undo frame cut count. */
|
|
kcd->undo->cuts++;
|
|
}
|
|
|
|
/* Given a list of KnifeLineHits for one face, sorted by l
|
|
* and then by m, make the required KnifeVerts and
|
|
* KnifeEdges.
|
|
*/
|
|
static void knife_cut_face(KnifeTool_OpData *kcd, BMFace *f, ListBase *hits)
|
|
{
|
|
LinkData *r;
|
|
|
|
if (BLI_listbase_count_at_most(hits, 2) != 2) {
|
|
return;
|
|
}
|
|
|
|
for (r = static_cast<LinkData *>(hits->first); r->next; r = r->next) {
|
|
knife_add_single_cut(
|
|
kcd, static_cast<KnifeLineHit *>(r->data), static_cast<KnifeLineHit *>(r->next->data), f);
|
|
}
|
|
}
|
|
|
|
static void knife_make_face_cuts(KnifeTool_OpData *kcd, BMesh *bm, BMFace *f, ListBase *kfedges)
|
|
{
|
|
KnifeEdge *kfe;
|
|
int edge_array_len = BLI_listbase_count(kfedges);
|
|
int i;
|
|
|
|
BMEdge **edge_array = static_cast<BMEdge **>(BLI_array_alloca(edge_array, edge_array_len));
|
|
|
|
/* Point to knife edges we've created edges in, edge_array aligned. */
|
|
KnifeEdge **kfe_array = static_cast<KnifeEdge **>(BLI_array_alloca(kfe_array, edge_array_len));
|
|
|
|
BLI_assert(BLI_gset_len(kcd->edgenet.edge_visit) == 0);
|
|
|
|
i = 0;
|
|
LISTBASE_FOREACH (LinkData *, ref, kfedges) {
|
|
bool is_new_edge = false;
|
|
kfe = static_cast<KnifeEdge *>(ref->data);
|
|
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
|
|
if (kfe->e == nullptr) {
|
|
if (kfe->v1->v && kfe->v2->v) {
|
|
kfe->e = BM_edge_exists(kfe->v1->v, kfe->v2->v);
|
|
}
|
|
}
|
|
|
|
if (kfe->e) {
|
|
if (BM_edge_in_face(kfe->e, f)) {
|
|
/* Shouldn't happen, but in this case just ignore. */
|
|
continue;
|
|
}
|
|
}
|
|
else {
|
|
if (kfe->v1->v == nullptr) {
|
|
kfe->v1->v = BM_vert_create(bm, kfe->v1->co, nullptr, eBMCreateFlag(0));
|
|
}
|
|
if (kfe->v2->v == nullptr) {
|
|
kfe->v2->v = BM_vert_create(bm, kfe->v2->co, nullptr, eBMCreateFlag(0));
|
|
}
|
|
BLI_assert(kfe->e == nullptr);
|
|
kfe->e = BM_edge_create(bm, kfe->v1->v, kfe->v2->v, nullptr, eBMCreateFlag(0));
|
|
if (kfe->e) {
|
|
if (kcd->select_result || BM_elem_flag_test(f, BM_ELEM_SELECT)) {
|
|
BM_edge_select_set(bm, kfe->e, true);
|
|
}
|
|
is_new_edge = true;
|
|
}
|
|
}
|
|
|
|
BLI_assert(kfe->e);
|
|
|
|
if (BLI_gset_add(kcd->edgenet.edge_visit, kfe->e)) {
|
|
kfe_array[i] = is_new_edge ? kfe : nullptr;
|
|
edge_array[i] = kfe->e;
|
|
i += 1;
|
|
}
|
|
}
|
|
|
|
if (i) {
|
|
const int edge_array_len_orig = i;
|
|
edge_array_len = i;
|
|
|
|
#ifdef USE_NET_ISLAND_CONNECT
|
|
uint edge_array_holes_len;
|
|
BMEdge **edge_array_holes;
|
|
if (BM_face_split_edgenet_connect_islands(bm,
|
|
f,
|
|
edge_array,
|
|
edge_array_len,
|
|
true,
|
|
kcd->edgenet.arena,
|
|
&edge_array_holes,
|
|
&edge_array_holes_len))
|
|
{
|
|
if (BM_elem_flag_test(f, BM_ELEM_SELECT)) {
|
|
for (i = edge_array_len; i < edge_array_holes_len; i++) {
|
|
BM_edge_select_set(bm, edge_array_holes[i], true);
|
|
}
|
|
}
|
|
|
|
edge_array_len = edge_array_holes_len;
|
|
edge_array = edge_array_holes; /* Owned by the arena. */
|
|
}
|
|
#endif
|
|
|
|
{
|
|
BM_face_split_edgenet(bm, f, edge_array, edge_array_len, nullptr);
|
|
}
|
|
|
|
/* Remove dangling edges, not essential - but nice for users. */
|
|
for (i = 0; i < edge_array_len_orig; i++) {
|
|
if (kfe_array[i] == nullptr) {
|
|
continue;
|
|
}
|
|
if (BM_edge_is_wire(kfe_array[i]->e)) {
|
|
BM_edge_kill(bm, kfe_array[i]->e);
|
|
kfe_array[i]->e = nullptr;
|
|
}
|
|
}
|
|
|
|
#ifdef USE_NET_ISLAND_CONNECT
|
|
BLI_memarena_clear(kcd->edgenet.arena);
|
|
#endif
|
|
}
|
|
|
|
BLI_gset_clear(kcd->edgenet.edge_visit, nullptr);
|
|
}
|
|
|
|
static int sort_verts_by_dist_cb(void *co_p, const void *cur_a_p, const void *cur_b_p)
|
|
{
|
|
const KnifeVert *cur_a = static_cast<const KnifeVert *>(((const LinkData *)cur_a_p)->data);
|
|
const KnifeVert *cur_b = static_cast<const KnifeVert *>(((const LinkData *)cur_b_p)->data);
|
|
const float *co = static_cast<const float *>(co_p);
|
|
const float a_sq = len_squared_v3v3(co, cur_a->co);
|
|
const float b_sq = len_squared_v3v3(co, cur_b->co);
|
|
|
|
if (a_sq < b_sq) {
|
|
return -1;
|
|
}
|
|
if (a_sq > b_sq) {
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Use the network of KnifeEdges and KnifeVerts accumulated to make real BMVerts and BMEdedges. */
|
|
static void knife_make_cuts(KnifeTool_OpData *kcd, int ob_index)
|
|
{
|
|
Object *ob = kcd->objects[ob_index];
|
|
BMEditMesh *em = BKE_editmesh_from_object(ob);
|
|
BMesh *bm = em->bm;
|
|
KnifeEdge *kfe;
|
|
KnifeVert *kfv;
|
|
BMEdge *enew;
|
|
ListBase *list;
|
|
float pct;
|
|
BLI_mempool_iter iter;
|
|
Map<BMFace *, ListBase *> fhash;
|
|
Map<BMEdge *, ListBase *> ehash;
|
|
|
|
/* Put list of cutting edges for a face into fhash, keyed by face. */
|
|
BLI_mempool_iternew(kcd->kedges, &iter);
|
|
for (kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iter)); kfe;
|
|
kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iter)))
|
|
{
|
|
if (kfe->is_invalid || kfe->v1->ob_index != ob_index) {
|
|
continue;
|
|
}
|
|
|
|
/* Select edges that lie directly on the cut. */
|
|
if (kcd->select_result) {
|
|
if (kfe->e && kfe->is_cut) {
|
|
BM_edge_select_set(bm, kfe->e, true);
|
|
}
|
|
}
|
|
|
|
BMFace *f = kfe->basef;
|
|
if (!f || kfe->e) {
|
|
continue;
|
|
}
|
|
list = fhash.lookup_default(f, nullptr);
|
|
if (!list) {
|
|
list = knife_empty_list(kcd);
|
|
fhash.add(f, list);
|
|
}
|
|
knife_append_list(kcd, list, kfe);
|
|
}
|
|
|
|
/* Put list of splitting vertices for an edge into ehash, keyed by edge. */
|
|
BLI_mempool_iternew(kcd->kverts, &iter);
|
|
for (kfv = static_cast<KnifeVert *>(BLI_mempool_iterstep(&iter)); kfv;
|
|
kfv = static_cast<KnifeVert *>(BLI_mempool_iterstep(&iter)))
|
|
{
|
|
if (kfv->v || kfv->is_invalid || kfv->ob_index != ob_index) {
|
|
continue; /* Already have a BMVert. */
|
|
}
|
|
LISTBASE_FOREACH (LinkData *, ref, &kfv->edges) {
|
|
kfe = static_cast<KnifeEdge *>(ref->data);
|
|
BMEdge *e = kfe->e;
|
|
if (!e) {
|
|
continue;
|
|
}
|
|
list = ehash.lookup_default(e, nullptr);
|
|
if (!list) {
|
|
list = knife_empty_list(kcd);
|
|
ehash.add(e, list);
|
|
}
|
|
/* There can be more than one kfe in kfv's list with same e. */
|
|
if (!find_ref(list, kfv)) {
|
|
knife_append_list(kcd, list, kfv);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Split bmesh edges where needed. */
|
|
for (auto [e, list] : ehash.items()) {
|
|
BLI_listbase_sort_r(list, sort_verts_by_dist_cb, e->v1->co);
|
|
|
|
LISTBASE_FOREACH (LinkData *, ref, list) {
|
|
kfv = static_cast<KnifeVert *>(ref->data);
|
|
pct = line_point_factor_v3(kfv->co, e->v1->co, e->v2->co);
|
|
kfv->v = BM_edge_split(bm, e, e->v1, &enew, pct);
|
|
}
|
|
}
|
|
|
|
if (kcd->only_select) {
|
|
EDBM_flag_disable_all(em, BM_ELEM_SELECT);
|
|
}
|
|
|
|
/* Do cuts for each face. */
|
|
for (auto [f, list] : fhash.items()) {
|
|
knife_make_face_cuts(kcd, bm, f, list);
|
|
}
|
|
}
|
|
|
|
/* User has just left-clicked after the first time.
|
|
* Add all knife cuts implied by line from prev to curr.
|
|
* If that line crossed edges then kcd->linehits will be non-null.
|
|
* Make all of the KnifeVerts and KnifeEdges implied by this cut.
|
|
*/
|
|
static void knife_add_cut(KnifeTool_OpData *kcd)
|
|
{
|
|
GHash *facehits;
|
|
BMFace *f;
|
|
GHashIterator giter;
|
|
ListBase *list;
|
|
|
|
/* Allocate new undo frame on stack, unless cut is being dragged. */
|
|
if (!kcd->is_drag_undo) {
|
|
kcd->undo = static_cast<KnifeUndoFrame *>(BLI_stack_push_r(kcd->undostack));
|
|
kcd->undo->pos = kcd->prev;
|
|
kcd->undo->cuts = 0;
|
|
kcd->undo->splits = 0;
|
|
kcd->undo->mdata = kcd->mdata;
|
|
kcd->is_drag_undo = true;
|
|
}
|
|
|
|
/* Save values for angle drawing calculations. */
|
|
copy_v3_v3(kcd->mdata.cage, kcd->prev.cage);
|
|
copy_v2_v2(kcd->mdata.mval, kcd->prev.mval);
|
|
kcd->mdata.is_stored = true;
|
|
|
|
prepare_linehits_for_cut(kcd);
|
|
if (kcd->linehits.is_empty()) {
|
|
if (kcd->is_drag_hold == false) {
|
|
kcd->prev = kcd->curr;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Consider most recent linehit in angle drawing calculations. */
|
|
if (kcd->linehits.size() >= 2) {
|
|
copy_v3_v3(kcd->mdata.cage, kcd->linehits[kcd->linehits.size() - 2].cagehit);
|
|
}
|
|
|
|
/* Make facehits: map face -> list of linehits touching it. */
|
|
facehits = BLI_ghash_ptr_new("knife facehits");
|
|
for (KnifeLineHit &hit : kcd->linehits) {
|
|
KnifeLineHit *lh = &hit;
|
|
if (lh->f) {
|
|
add_hit_to_facehits(kcd, facehits, lh->f, lh);
|
|
}
|
|
if (lh->v) {
|
|
LISTBASE_FOREACH (LinkData *, r, &lh->v->faces) {
|
|
add_hit_to_facehits(kcd, facehits, static_cast<BMFace *>(r->data), lh);
|
|
}
|
|
}
|
|
if (lh->kfe) {
|
|
LISTBASE_FOREACH (LinkData *, r, &lh->kfe->faces) {
|
|
add_hit_to_facehits(kcd, facehits, static_cast<BMFace *>(r->data), lh);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* NOTE: as following loop progresses, the 'v' fields of
|
|
* the linehits will be filled in (as edges are split or
|
|
* in-face verts are made), so it may be true that both
|
|
* the v and the kfe or f fields will be non-null. */
|
|
GHASH_ITER (giter, facehits) {
|
|
f = (BMFace *)BLI_ghashIterator_getKey(&giter);
|
|
list = (ListBase *)BLI_ghashIterator_getValue(&giter);
|
|
knife_cut_face(kcd, f, list);
|
|
}
|
|
|
|
/* Set up for next cut. */
|
|
kcd->prev = kcd->curr;
|
|
|
|
if (kcd->prev.bmface) {
|
|
/* Was "in face" but now we have a KnifeVert it is snapped to. */
|
|
KnifeLineHit *lh = &kcd->linehits.last();
|
|
kcd->prev.vert = lh->v;
|
|
kcd->prev.bmface = nullptr;
|
|
}
|
|
|
|
if (kcd->is_drag_hold) {
|
|
KnifeLineHit *lh = &kcd->linehits.last();
|
|
linehit_to_knifepos(&kcd->prev, lh);
|
|
}
|
|
|
|
BLI_ghash_free(facehits, nullptr, nullptr);
|
|
kcd->linehits.clear_and_shrink();
|
|
}
|
|
|
|
static void knife_finish_cut(KnifeTool_OpData *kcd)
|
|
{
|
|
kcd->linehits.clear_and_shrink();
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Screen Line Hits (#knife_find_line_hits)
|
|
* \{ */
|
|
|
|
/* Record the index in kcd->em->looptris of first looptri triple for a given face,
|
|
* given an index for some triple in that array.
|
|
* This assumes that all of the triangles for a given face are contiguous
|
|
* in that array (as they are by the current tessellation routines).
|
|
* Actually store index + 1 in the hash, because 0 looks like "no entry"
|
|
* to hash lookup routine; will reverse this in the get routine.
|
|
* Doing this lazily rather than all at once for all faces.
|
|
*/
|
|
static void set_lowest_face_tri(KnifeTool_OpData *kcd, BMEditMesh *em, BMFace *f, int index)
|
|
{
|
|
int i;
|
|
|
|
if (BLI_ghash_lookup(kcd->facetrimap, f)) {
|
|
return;
|
|
}
|
|
|
|
BLI_assert(index >= 0 && index < em->looptris.size());
|
|
BLI_assert(em->looptris[index][0]->f == f);
|
|
for (i = index - 1; i >= 0; i--) {
|
|
if (em->looptris[i][0]->f != f) {
|
|
i++;
|
|
break;
|
|
}
|
|
}
|
|
if (i == -1) {
|
|
i++;
|
|
}
|
|
|
|
BLI_ghash_insert(kcd->facetrimap, f, POINTER_FROM_INT(i + 1));
|
|
}
|
|
|
|
/* This should only be called for faces that have had a lowest face tri set by previous function.
|
|
*/
|
|
static int get_lowest_face_tri(KnifeTool_OpData *kcd, BMFace *f)
|
|
{
|
|
int ans;
|
|
|
|
ans = POINTER_AS_INT(BLI_ghash_lookup(kcd->facetrimap, f));
|
|
BLI_assert(ans != 0);
|
|
return ans - 1;
|
|
}
|
|
|
|
/**
|
|
* Find intersection of v1-v2 with face f.
|
|
* Only take intersections that are at least \a face_tol_sq (in screen space) away
|
|
* from other intersection elements.
|
|
* If v1-v2 is coplanar with f, call that "no intersection though
|
|
* it really means "infinite number of intersections".
|
|
* In such a case we should have gotten hits on edges or verts of the face.
|
|
*/
|
|
static bool knife_ray_intersect_face(KnifeTool_OpData *kcd,
|
|
const float s[2],
|
|
const float v1[3],
|
|
const float v2[3],
|
|
int ob_index,
|
|
BMFace *f,
|
|
const float face_tol_sq,
|
|
float hit_co[3],
|
|
float hit_cageco[3])
|
|
{
|
|
Object *ob = kcd->objects[ob_index];
|
|
BMEditMesh *em = BKE_editmesh_from_object(ob);
|
|
|
|
int tottri, tri_i;
|
|
float raydir[3];
|
|
float tri_norm[3], tri_plane[4];
|
|
float se1[2], se2[2];
|
|
float d, lambda;
|
|
ListBase *list;
|
|
KnifeEdge *kfe;
|
|
|
|
sub_v3_v3v3(raydir, v2, v1);
|
|
normalize_v3(raydir);
|
|
tri_i = get_lowest_face_tri(kcd, f);
|
|
tottri = em->looptris.size();
|
|
BLI_assert(tri_i >= 0 && tri_i < tottri);
|
|
|
|
for (; tri_i < tottri; tri_i++) {
|
|
float tri_cos[3][3];
|
|
float ray_tri_uv[2];
|
|
|
|
const std::array<BMLoop *, 3> <ri = em->looptris[tri_i];
|
|
if (ltri[0]->f != f) {
|
|
break;
|
|
}
|
|
|
|
knife_bm_tri_cagecos_get_worldspace(kcd, ob_index, tri_i, tri_cos);
|
|
|
|
/* Using epsilon test in case ray is directly through an internal
|
|
* tessellation edge and might not hit either tessellation tri with
|
|
* an exact test;
|
|
* We will exclude hits near real edges by a later test. */
|
|
if (isect_ray_tri_epsilon_v3(v1, raydir, UNPACK3(tri_cos), &lambda, ray_tri_uv, KNIFE_FLT_EPS))
|
|
{
|
|
/* Check if line coplanar with tri. */
|
|
normal_tri_v3(tri_norm, UNPACK3(tri_cos));
|
|
plane_from_point_normal_v3(tri_plane, tri_cos[0], tri_norm);
|
|
if ((dist_squared_to_plane_v3(v1, tri_plane) < KNIFE_FLT_EPS) &&
|
|
(dist_squared_to_plane_v3(v2, tri_plane) < KNIFE_FLT_EPS))
|
|
{
|
|
return false;
|
|
}
|
|
interp_v3_v3v3v3_uv(hit_cageco, UNPACK3(tri_cos), ray_tri_uv);
|
|
/* Now check that far enough away from verts and edges. */
|
|
list = knife_get_face_kedges(kcd, ob_index, f);
|
|
LISTBASE_FOREACH (LinkData *, ref, list) {
|
|
kfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
knife_project_v2(kcd, kfe->v1->cageco, se1);
|
|
knife_project_v2(kcd, kfe->v2->cageco, se2);
|
|
d = dist_squared_to_line_segment_v2(s, se1, se2);
|
|
if (d < face_tol_sq) {
|
|
return false;
|
|
}
|
|
}
|
|
interp_v3_v3v3v3_uv(hit_co, ltri[0]->v->co, ltri[1]->v->co, ltri[2]->v->co, ray_tri_uv);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Calculate the center and maximum excursion of mesh.
|
|
* (Considers all meshes in multi-object edit mode)
|
|
*/
|
|
static void calc_ortho_extent(KnifeTool_OpData *kcd)
|
|
{
|
|
Object *ob;
|
|
BMEditMesh *em;
|
|
BMIter iter;
|
|
BMVert *v;
|
|
float min[3], max[3];
|
|
float ws[3];
|
|
INIT_MINMAX(min, max);
|
|
|
|
for (int ob_index = 0; ob_index < kcd->objects.size(); ob_index++) {
|
|
ob = kcd->objects[ob_index];
|
|
em = BKE_editmesh_from_object(ob);
|
|
|
|
const Span<float3> positions_cage = kcd->objects_info[ob_index].positions_cage;
|
|
if (!positions_cage.is_empty()) {
|
|
for (int i = 0; i < em->bm->totvert; i++) {
|
|
copy_v3_v3(ws, positions_cage[i]);
|
|
mul_m4_v3(ob->object_to_world().ptr(), ws);
|
|
minmax_v3v3_v3(min, max, ws);
|
|
}
|
|
}
|
|
else {
|
|
BM_ITER_MESH (v, &iter, em->bm, BM_VERTS_OF_MESH) {
|
|
copy_v3_v3(ws, v->co);
|
|
mul_m4_v3(ob->object_to_world().ptr(), ws);
|
|
minmax_v3v3_v3(min, max, ws);
|
|
}
|
|
}
|
|
}
|
|
|
|
kcd->ortho_extent = len_v3v3(min, max) / 2;
|
|
mid_v3_v3v3(kcd->ortho_extent_center, min, max);
|
|
}
|
|
|
|
/* Do edges e1 and e2 go between exactly the same coordinates? */
|
|
static bool coinciding_edges(BMEdge *e1, BMEdge *e2)
|
|
{
|
|
const float *co11, *co12, *co21, *co22;
|
|
|
|
co11 = e1->v1->co;
|
|
co12 = e1->v2->co;
|
|
co21 = e2->v1->co;
|
|
co22 = e2->v2->co;
|
|
if ((equals_v3v3(co11, co21) && equals_v3v3(co12, co22)) ||
|
|
(equals_v3v3(co11, co22) && equals_v3v3(co12, co21)))
|
|
{
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/* Callback used in point_is_visible to exclude hits on the faces that are the same
|
|
* as or contain the hitting element (which is in user_data).
|
|
* Also (see #44492) want to exclude hits on faces that butt up to the hitting element
|
|
* (e.g., when you double an edge by an edge split).
|
|
*/
|
|
static bool bm_ray_cast_cb_elem_not_in_face_check(BMFace *f, void *user_data)
|
|
{
|
|
bool ans;
|
|
BMEdge *e, *e2;
|
|
BMIter iter;
|
|
|
|
switch (((BMElem *)user_data)->head.htype) {
|
|
case BM_FACE:
|
|
ans = (BMFace *)user_data != f;
|
|
break;
|
|
case BM_EDGE:
|
|
e = (BMEdge *)user_data;
|
|
ans = !BM_edge_in_face(e, f);
|
|
if (ans) {
|
|
/* Is it a boundary edge, coincident with a split edge? */
|
|
if (BM_edge_is_boundary(e)) {
|
|
BM_ITER_ELEM (e2, &iter, f, BM_EDGES_OF_FACE) {
|
|
if (coinciding_edges(e, e2)) {
|
|
ans = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case BM_VERT:
|
|
ans = !BM_vert_in_face((BMVert *)user_data, f);
|
|
break;
|
|
default:
|
|
ans = true;
|
|
break;
|
|
}
|
|
return ans;
|
|
}
|
|
|
|
/**
|
|
* Check if \a p is visible (not clipped, not occluded by another face).
|
|
* s in screen projection of p.
|
|
*
|
|
* \param ele_test: Optional vert/edge/face to use when \a p is on the surface of the geometry,
|
|
* intersecting faces matching this face (or connected when an vert/edge) will be ignored.
|
|
*/
|
|
static bool point_is_visible(KnifeTool_OpData *kcd,
|
|
const float p[3],
|
|
const float s[2],
|
|
BMElem *ele_test)
|
|
{
|
|
BMFace *f_hit;
|
|
|
|
/* If box clipping on, make sure p is not clipped. */
|
|
if (RV3D_CLIPPING_ENABLED(kcd->vc.v3d, kcd->vc.rv3d) &&
|
|
ED_view3d_clipping_test(kcd->vc.rv3d, p, false))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* If not cutting through, make sure no face is in front of p. */
|
|
if (!kcd->cut_through) {
|
|
float dist;
|
|
float view[3], p_ofs[3];
|
|
|
|
/* TODO: I think there's a simpler way to get the required raycast ray. */
|
|
ED_view3d_unproject_v3(kcd->vc.region, s[0], s[1], 0.0f, view);
|
|
|
|
/* Make p_ofs a little towards view, so ray doesn't hit p's face. */
|
|
sub_v3_v3(view, p);
|
|
dist = normalize_v3(view);
|
|
copy_v3_v3(p_ofs, p);
|
|
|
|
/* Avoid projecting behind the viewpoint. */
|
|
if (kcd->is_ortho && (kcd->vc.rv3d->persp != RV3D_CAMOB)) {
|
|
dist = kcd->vc.v3d->clip_end * 2.0f;
|
|
}
|
|
|
|
if (RV3D_CLIPPING_ENABLED(kcd->vc.v3d, kcd->vc.rv3d)) {
|
|
float view_clip[2][3];
|
|
/* NOTE: view_clip[0] should never get clipped. */
|
|
copy_v3_v3(view_clip[0], p_ofs);
|
|
madd_v3_v3v3fl(view_clip[1], p_ofs, view, dist);
|
|
|
|
if (clip_segment_v3_plane_n(
|
|
view_clip[0], view_clip[1], kcd->vc.rv3d->clip_local, 6, view_clip[0], view_clip[1]))
|
|
{
|
|
dist = len_v3v3(p_ofs, view_clip[1]);
|
|
}
|
|
}
|
|
|
|
/* See if there's a face hit between p1 and the view. */
|
|
if (ele_test) {
|
|
f_hit = knife_bvh_raycast_filter(kcd,
|
|
p_ofs,
|
|
view,
|
|
KNIFE_FLT_EPS,
|
|
&dist,
|
|
nullptr,
|
|
nullptr,
|
|
bm_ray_cast_cb_elem_not_in_face_check,
|
|
ele_test);
|
|
}
|
|
else {
|
|
f_hit = knife_bvh_raycast(kcd, p_ofs, view, KNIFE_FLT_EPS, &dist, nullptr, nullptr);
|
|
}
|
|
|
|
if (f_hit) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Clip the line (v1, v2) to planes perpendicular to it and distances d from
|
|
* the closest point on the line to the origin. */
|
|
static void clip_to_ortho_planes(float v1[3], float v2[3], const float center[3], const float d)
|
|
{
|
|
float closest[3], dir[3];
|
|
|
|
sub_v3_v3v3(dir, v1, v2);
|
|
normalize_v3(dir);
|
|
|
|
/* could be v1 or v2 */
|
|
sub_v3_v3(v1, center);
|
|
project_plane_normalized_v3_v3v3(closest, v1, dir);
|
|
add_v3_v3(closest, center);
|
|
|
|
madd_v3_v3v3fl(v1, closest, dir, d);
|
|
madd_v3_v3v3fl(v2, closest, dir, -d);
|
|
}
|
|
|
|
static void knife_linehit_set(KnifeTool_OpData *kcd,
|
|
float s1[2],
|
|
float s2[2],
|
|
float sco[2],
|
|
float cage[3],
|
|
int ob_index,
|
|
KnifeVert *v,
|
|
KnifeEdge *kfe,
|
|
KnifeLineHit *r_hit)
|
|
{
|
|
memset(r_hit, 0, sizeof(*r_hit));
|
|
copy_v3_v3(r_hit->cagehit, cage);
|
|
copy_v2_v2(r_hit->schit, sco);
|
|
r_hit->ob_index = ob_index;
|
|
|
|
/* Find position along screen line, used for sorting. */
|
|
r_hit->l = len_v2v2(sco, s1) / len_v2v2(s2, s1);
|
|
|
|
r_hit->m = dot_m4_v3_row_z(kcd->vc.rv3d->persmatob, cage);
|
|
|
|
r_hit->v = v;
|
|
|
|
/* If this isn't from an existing BMVert, it may have been added to a BMEdge originally.
|
|
* Knowing if the hit comes from an edge is important for edge-in-face checks later on.
|
|
* See: #knife_add_single_cut -> #knife_verts_edge_in_face, #42611. */
|
|
r_hit->kfe = kfe;
|
|
|
|
if (v) {
|
|
copy_v3_v3(r_hit->hit, v->co);
|
|
}
|
|
else if (kfe) {
|
|
transform_point_by_seg_v3(
|
|
r_hit->hit, cage, kfe->v1->co, kfe->v2->co, kfe->v1->cageco, kfe->v2->cageco);
|
|
}
|
|
}
|
|
|
|
static bool knife_linehit_face_test(KnifeTool_OpData *kcd,
|
|
float s1[2],
|
|
float s2[2],
|
|
float sco[2],
|
|
float ray_start[3],
|
|
float ray_end[3],
|
|
int ob_index,
|
|
BMFace *f,
|
|
float face_tol_sq,
|
|
KnifeLineHit *r_hit)
|
|
{
|
|
float3 p, cage;
|
|
if (!knife_ray_intersect_face(kcd, sco, ray_start, ray_end, ob_index, f, face_tol_sq, p, cage)) {
|
|
return false;
|
|
}
|
|
if (!point_is_visible(kcd, cage, sco, (BMElem *)f)) {
|
|
return false;
|
|
}
|
|
knife_linehit_set(kcd, s1, s2, sco, cage, ob_index, nullptr, nullptr, r_hit);
|
|
copy_v3_v3(r_hit->hit, p);
|
|
r_hit->f = f;
|
|
return true;
|
|
}
|
|
|
|
/* Finds visible (or all, if cutting through) edges that intersects the current screen drag line.
|
|
*/
|
|
static void knife_find_line_hits(KnifeTool_OpData *kcd)
|
|
{
|
|
float3 v1, v2;
|
|
float2 s1, s2;
|
|
int *results, *result;
|
|
ListBase *list;
|
|
KnifeLineHit hit;
|
|
float s[2], se1[2], se2[2];
|
|
float d1, d2;
|
|
float vert_tol, vert_tol_sq;
|
|
float line_tol, line_tol_sq;
|
|
float face_tol, face_tol_sq;
|
|
uint tot;
|
|
int i;
|
|
|
|
kcd->linehits.clear_and_shrink();
|
|
|
|
copy_v3_v3(v1, kcd->prev.cage);
|
|
copy_v3_v3(v2, kcd->curr.cage);
|
|
|
|
/* Project screen line's 3d coordinates back into 2d. */
|
|
knife_project_v2(kcd, v1, s1);
|
|
knife_project_v2(kcd, v2, s2);
|
|
|
|
if (kcd->is_interactive) {
|
|
if (len_squared_v2v2(s1, s2) < 1.0f) {
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
if (len_squared_v2v2(s1, s2) < KNIFE_FLT_EPS_SQUARED) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
float4 plane;
|
|
{
|
|
if (kcd->is_ortho) {
|
|
cross_v3_v3v3(plane, v2 - v1, kcd->vc.rv3d->viewinv[2]);
|
|
}
|
|
else {
|
|
float3 orig = kcd->vc.rv3d->viewinv[3];
|
|
float3 o_v1 = v1 - orig;
|
|
float3 o_v2 = v2 - orig;
|
|
cross_v3_v3v3(plane, o_v1, o_v2);
|
|
}
|
|
plane_from_point_normal_v3(plane, v1, plane);
|
|
}
|
|
|
|
/* First use BVH tree to find faces, knife edges, and knife verts that might
|
|
* intersect the cut plane with rays v1-v3 and v2-v4.
|
|
* This de-duplicates the candidates before doing more expensive intersection tests. */
|
|
|
|
results = BLI_bvhtree_intersect_plane(kcd->bvh.tree, plane, &tot);
|
|
if (!results) {
|
|
return;
|
|
}
|
|
|
|
Set<BMFace *> faces;
|
|
Map<BMFace *, uint> fobs;
|
|
Set<KnifeEdge *> kfes;
|
|
Set<KnifeVert *> kfvs;
|
|
|
|
Object *ob;
|
|
BMEditMesh *em;
|
|
|
|
for (i = 0, result = results; i < tot; i++, result++) {
|
|
uint ob_index = 0;
|
|
BMLoop *const *ltri = nullptr;
|
|
for (ob_index = 0; ob_index < kcd->objects.size(); ob_index++) {
|
|
ob = kcd->objects[ob_index];
|
|
em = BKE_editmesh_from_object(ob);
|
|
if (*result >= 0 && *result < em->looptris.size()) {
|
|
ltri = em->looptris[*result].data();
|
|
break;
|
|
}
|
|
*result -= em->looptris.size();
|
|
}
|
|
BLI_assert(ltri != nullptr);
|
|
BMFace *f = ltri[0]->f;
|
|
set_lowest_face_tri(kcd, em, f, *result);
|
|
|
|
/* Occlude but never cut unselected faces (when only_select is used). */
|
|
if (kcd->only_select && !BM_elem_flag_test(f, BM_ELEM_SELECT)) {
|
|
continue;
|
|
}
|
|
/* For faces, store index of lowest hit looptri in hash. */
|
|
if (faces.contains(f)) {
|
|
continue;
|
|
}
|
|
/* Don't care what the value is except that it is non-null, for iterator. */
|
|
faces.add(f);
|
|
fobs.add(f, ob_index);
|
|
|
|
list = knife_get_face_kedges(kcd, ob_index, f);
|
|
LISTBASE_FOREACH (LinkData *, ref, list) {
|
|
KnifeEdge *kfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
if (kfes.contains(kfe)) {
|
|
continue;
|
|
}
|
|
kfes.add(kfe);
|
|
kfvs.add(kfe->v1);
|
|
kfvs.add(kfe->v2);
|
|
}
|
|
}
|
|
|
|
/* Now go through the candidates and find intersections. */
|
|
/* These tolerances, in screen space, are for intermediate hits,
|
|
* as ends are already snapped to screen. */
|
|
|
|
if (kcd->is_interactive) {
|
|
vert_tol = KNIFE_FLT_EPS_PX_VERT;
|
|
line_tol = KNIFE_FLT_EPS_PX_EDGE;
|
|
face_tol = KNIFE_FLT_EPS_PX_FACE;
|
|
}
|
|
else {
|
|
/* Use 1/100th of a pixel, see #43896 (too big), #47910 (too small).
|
|
*
|
|
* Update, leave this as is until we investigate not using pixel coords
|
|
* for geometry calculations: #48023. */
|
|
vert_tol = line_tol = face_tol = 0.5f;
|
|
}
|
|
|
|
vert_tol_sq = vert_tol * vert_tol;
|
|
line_tol_sq = line_tol * line_tol;
|
|
face_tol_sq = face_tol * face_tol;
|
|
|
|
/* Assume these tolerances swamp floating point rounding errors in calculations below. */
|
|
|
|
/* First look for vertex hits. */
|
|
Vector<KnifeLineHit> linehits;
|
|
for (KnifeVert *v : kfvs) {
|
|
KnifeEdge *kfe_hit = nullptr;
|
|
|
|
bool kfv_is_in_cut = false;
|
|
if (ELEM(v, kcd->prev.vert, kcd->curr.vert)) {
|
|
/* This KnifeVert was captured by the snap system.
|
|
* Since the tolerance distance can be different, add this vertex directly.
|
|
* Otherwise, the cut may fail or a close cut on a connected edge can be performed. */
|
|
bm_elem_from_knife_vert(v, &kfe_hit);
|
|
copy_v2_v2(s, (v == kcd->prev.vert) ? kcd->prev.mval : kcd->curr.mval);
|
|
kfv_is_in_cut = true;
|
|
}
|
|
else {
|
|
knife_project_v2(kcd, v->cageco, s);
|
|
float d = dist_squared_to_line_segment_v2(s, s1, s2);
|
|
if ((d <= vert_tol_sq) &&
|
|
point_is_visible(kcd, v->cageco, s, bm_elem_from_knife_vert(v, &kfe_hit)))
|
|
{
|
|
kfv_is_in_cut = true;
|
|
}
|
|
}
|
|
|
|
if (kfv_is_in_cut) {
|
|
knife_linehit_set(kcd, s1, s2, s, v->cageco, v->ob_index, v, kfe_hit, &hit);
|
|
linehits.append(hit);
|
|
}
|
|
else {
|
|
/* This vertex isn't used so remove from `kfvs`.
|
|
* This is useful to detect KnifeEdges that can be skipped.
|
|
* And it optimizes iteration a little bit. */
|
|
kfvs.remove(v);
|
|
}
|
|
}
|
|
|
|
/* Now edge hits; don't add if a vertex at end of edge should have hit. */
|
|
for (KnifeEdge *kfe : kfes) {
|
|
/* If we intersect any of the vertices, don't attempt to intersect the edge. */
|
|
if (kfvs.contains(kfe->v1) || kfvs.contains(kfe->v2)) {
|
|
continue;
|
|
}
|
|
|
|
knife_project_v2(kcd, kfe->v1->cageco, se1);
|
|
knife_project_v2(kcd, kfe->v2->cageco, se2);
|
|
float3 p_cage;
|
|
float2 p_cage_ss;
|
|
bool kfe_is_in_cut = false;
|
|
if (kfe == kcd->prev.edge) {
|
|
/* This KnifeEdge was captured by the snap system. */
|
|
p_cage = kcd->prev.cage;
|
|
p_cage_ss = kcd->prev.mval;
|
|
kfe_is_in_cut = true;
|
|
}
|
|
else if (kfe == kcd->curr.edge) {
|
|
/* This KnifeEdge was captured by the snap system. */
|
|
p_cage = kcd->curr.cage;
|
|
p_cage_ss = kcd->curr.mval;
|
|
kfe_is_in_cut = true;
|
|
}
|
|
else {
|
|
int isect_kind = isect_seg_seg_v2_point_ex(s1, s2, se1, se2, 0.0f, p_cage_ss);
|
|
if (isect_kind == -1) {
|
|
/* isect_seg_seg_v2_point doesn't do tolerance test around ends of s1-s2. */
|
|
closest_to_line_segment_v2(p_cage_ss, s1, se1, se2);
|
|
if (len_squared_v2v2(p_cage_ss, s1) <= line_tol_sq) {
|
|
isect_kind = 1;
|
|
}
|
|
else {
|
|
closest_to_line_segment_v2(p_cage_ss, s2, se1, se2);
|
|
if (len_squared_v2v2(p_cage_ss, s2) <= line_tol_sq) {
|
|
isect_kind = 1;
|
|
}
|
|
}
|
|
}
|
|
if (isect_kind == 1) {
|
|
d1 = len_v2v2(p_cage_ss, se1);
|
|
d2 = len_v2v2(se2, se1);
|
|
if (!(d1 <= line_tol || d2 <= line_tol || fabsf(d1 - d2) <= line_tol)) {
|
|
/* Can't just interpolate between ends of `kfe` because
|
|
* that doesn't work with perspective transformation. */
|
|
float lambda;
|
|
float3 kfe_dir = kfe->v2->cageco - kfe->v1->cageco;
|
|
if (isect_ray_plane_v3(kfe->v1->cageco, kfe_dir, plane, &lambda, false)) {
|
|
p_cage = kfe->v1->cageco + kfe_dir * lambda;
|
|
if (point_is_visible(kcd, p_cage, p_cage_ss, bm_elem_from_knife_edge(kfe))) {
|
|
if (kcd->snap_midpoints) {
|
|
/* Choose intermediate point snap too. */
|
|
mid_v3_v3v3(p_cage, kfe->v1->cageco, kfe->v2->cageco);
|
|
mid_v2_v2v2(p_cage_ss, se1, se2);
|
|
}
|
|
kfe_is_in_cut = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (kfe_is_in_cut) {
|
|
knife_linehit_set(kcd, s1, s2, p_cage_ss, p_cage, kfe->v1->ob_index, nullptr, kfe, &hit);
|
|
linehits.append(hit);
|
|
}
|
|
}
|
|
|
|
/* Now face hits; don't add if a vertex or edge in face should have hit. */
|
|
const bool use_hit_prev = (kcd->prev.vert == nullptr) && (kcd->prev.edge == nullptr);
|
|
const bool use_hit_curr = (kcd->curr.vert == nullptr) && (kcd->curr.edge == nullptr) &&
|
|
!kcd->is_drag_hold;
|
|
if (use_hit_prev || use_hit_curr) {
|
|
float3 v3, v4;
|
|
|
|
/* Unproject screen line. */
|
|
ED_view3d_win_to_segment_clipped(
|
|
kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, s1, v1, v3, true);
|
|
ED_view3d_win_to_segment_clipped(
|
|
kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, s2, v2, v4, true);
|
|
|
|
/* Numeric error, 'v1' -> 'v2', 'v2' -> 'v4'
|
|
* can end up being ~2000 units apart with an orthogonal perspective.
|
|
*
|
|
* (from ED_view3d_win_to_segment_clipped() above)
|
|
* This gives precision error; rather than solving properly
|
|
* (which may involve using doubles everywhere!),
|
|
* limit the distance between these points. */
|
|
if (kcd->is_ortho && (kcd->vc.rv3d->persp != RV3D_CAMOB)) {
|
|
if (kcd->ortho_extent == 0.0f) {
|
|
calc_ortho_extent(kcd);
|
|
}
|
|
clip_to_ortho_planes(v1, v3, kcd->ortho_extent_center, kcd->ortho_extent + 10.0f);
|
|
clip_to_ortho_planes(v2, v4, kcd->ortho_extent_center, kcd->ortho_extent + 10.0f);
|
|
}
|
|
|
|
for (BMFace *f : faces) {
|
|
int ob_index = fobs.lookup(f);
|
|
if (use_hit_prev &&
|
|
knife_linehit_face_test(kcd, s1, s2, s1, v1, v3, ob_index, f, face_tol_sq, &hit))
|
|
{
|
|
linehits.append(hit);
|
|
}
|
|
|
|
if (use_hit_curr &&
|
|
knife_linehit_face_test(kcd, s1, s2, s2, v2, v4, ob_index, f, face_tol_sq, &hit))
|
|
{
|
|
linehits.append(hit);
|
|
}
|
|
}
|
|
}
|
|
|
|
kcd->linehits = std::move(linehits);
|
|
|
|
MEM_freeN(results);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name KnifePosData Utils
|
|
* \{ */
|
|
|
|
static void knife_pos_data_clear(KnifePosData *kpd)
|
|
{
|
|
zero_v3(kpd->cage);
|
|
kpd->vert = nullptr;
|
|
kpd->edge = nullptr;
|
|
kpd->bmface = nullptr;
|
|
kpd->ob_index = -1;
|
|
zero_v2(kpd->mval);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Snapping (#knife_snap_update_from_mval)
|
|
* \{ */
|
|
|
|
static bool knife_find_closest_face(KnifeTool_OpData *kcd,
|
|
const float2 &mval,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir,
|
|
KnifePosData *r_kpd)
|
|
{
|
|
float3 cage;
|
|
int ob_index;
|
|
BMFace *f;
|
|
float dist = KMAXDIST;
|
|
|
|
f = knife_bvh_raycast(kcd, ray_orig, ray_dir, 0.0f, nullptr, cage, &ob_index);
|
|
|
|
if (f && kcd->only_select && BM_elem_flag_test(f, BM_ELEM_SELECT) == 0) {
|
|
f = nullptr;
|
|
ob_index = -1;
|
|
}
|
|
|
|
if (f == nullptr) {
|
|
if (kcd->is_interactive) {
|
|
/* Try to use back-buffer selection method if ray casting failed.
|
|
*
|
|
* Apply the mouse coordinates to a copy of the view-context
|
|
* since we don't want to rely on this being set elsewhere. */
|
|
ViewContext vc = kcd->vc;
|
|
vc.mval[0] = int(mval[0]);
|
|
vc.mval[1] = int(mval[1]);
|
|
|
|
if (BKE_object_is_visible_in_viewport(vc.v3d, vc.obact)) {
|
|
f = EDBM_face_find_nearest(&vc, &dist);
|
|
}
|
|
|
|
if (f) {
|
|
/* Cheat for now; just put in the origin instead
|
|
* of a true coordinate on the face.
|
|
* This just puts a point 1.0f in front of the view. */
|
|
cage = ray_orig + ray_dir;
|
|
|
|
ob_index = 0;
|
|
BLI_assert(ob_index == kcd->objects.first_index_of_try(vc.obact));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (f) {
|
|
r_kpd->cage = cage;
|
|
r_kpd->bmface = f;
|
|
r_kpd->ob_index = ob_index;
|
|
r_kpd->mval = mval;
|
|
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Find the 2d screen space density of vertices within a radius.
|
|
* Used to scale snapping distance for picking edges/verts.
|
|
*
|
|
* Arguments `f` and `cageco` should be the result of a call to #knife_find_closest_face.
|
|
*/
|
|
static int knife_sample_screen_density_from_closest_face(
|
|
KnifeTool_OpData *kcd, const float radius, int ob_index, BMFace *f, const float cageco[3])
|
|
{
|
|
const float radius_sq = radius * radius;
|
|
ListBase *list;
|
|
float sco[2];
|
|
float dis_sq;
|
|
int c = 0;
|
|
|
|
knife_project_v2(kcd, cageco, sco);
|
|
|
|
list = knife_get_face_kedges(kcd, ob_index, f);
|
|
LISTBASE_FOREACH (LinkData *, ref, list) {
|
|
KnifeEdge *kfe = static_cast<KnifeEdge *>(ref->data);
|
|
int i;
|
|
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
KnifeVert *kfv = i ? kfe->v2 : kfe->v1;
|
|
float kfv_sco[2];
|
|
|
|
if (kfv->is_invalid) {
|
|
continue;
|
|
}
|
|
|
|
knife_project_v2(kcd, kfv->cageco, kfv_sco);
|
|
|
|
dis_sq = len_squared_v2v2(kfv_sco, sco);
|
|
if (dis_sq < radius_sq) {
|
|
if (RV3D_CLIPPING_ENABLED(kcd->vc.v3d, kcd->vc.rv3d)) {
|
|
if (ED_view3d_clipping_test(kcd->vc.rv3d, kfv->cageco, false) == 0) {
|
|
c++;
|
|
}
|
|
}
|
|
else {
|
|
c++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* \return the snapping distance for edges/verts, scaled by the density of the
|
|
* surrounding mesh (in screen space).
|
|
*
|
|
* \note Face values in `kcd->curr` must be up to date.
|
|
*/
|
|
static float knife_snap_size(KnifeTool_OpData *kcd, float maxsize)
|
|
{
|
|
BLI_assert(kcd->is_interactive == true);
|
|
int density = 0;
|
|
|
|
if (!kcd->curr.is_space()) {
|
|
density = float(knife_sample_screen_density_from_closest_face(
|
|
kcd, maxsize * 2.0f, kcd->curr.ob_index, kcd->curr.bmface, kcd->curr.cage));
|
|
}
|
|
|
|
return density ? min_ff(maxsize / (float(density) * 0.5f), maxsize) : maxsize;
|
|
}
|
|
|
|
/**
|
|
* Find a point on an edge that is closest to the axis of a constrained mode.
|
|
*
|
|
* \return true if the point is between the edge limits.
|
|
*/
|
|
static bool knife_closest_constrain_to_edge(KnifeTool_OpData *kcd,
|
|
const float3 &kfv1_cageco,
|
|
const float3 &kfv2_cageco,
|
|
float r_close[3])
|
|
{
|
|
/* If snapping, check we're in bounds. */
|
|
float lambda;
|
|
float3 dir = kcd->curr.cage - kcd->prev.cage;
|
|
if (!isect_ray_line_v3(kcd->prev.cage, dir, kfv1_cageco, kfv2_cageco, &lambda)) {
|
|
return false;
|
|
}
|
|
|
|
/* Be strict when constrained within edge. */
|
|
if ((lambda < 0.0f - KNIFE_FLT_EPSBIG) || (lambda > 1.0f + KNIFE_FLT_EPSBIG)) {
|
|
return false;
|
|
}
|
|
|
|
interp_v3_v3v3(r_close, kfv1_cageco, kfv2_cageco, lambda);
|
|
return true;
|
|
}
|
|
|
|
/* `r_kpd->cage` is closest point on edge to the knife point. */
|
|
static bool knife_find_closest_edge_of_face(KnifeTool_OpData *kcd,
|
|
int ob_index,
|
|
BMFace *f,
|
|
const float2 &curr_cage_ss,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir,
|
|
KnifePosData *r_kpd)
|
|
{
|
|
float maxdist;
|
|
|
|
if (kcd->is_interactive) {
|
|
maxdist = knife_snap_size(kcd, kcd->ethresh);
|
|
|
|
if (kcd->ignore_vert_snapping) {
|
|
maxdist *= 0.5f;
|
|
}
|
|
}
|
|
else {
|
|
maxdist = KNIFE_FLT_EPS;
|
|
}
|
|
|
|
const float maxdist_sq = maxdist * maxdist;
|
|
float cur_dist_sq = maxdist_sq;
|
|
bool has_hit = false;
|
|
|
|
/* Look through all edges associated with this face. */
|
|
ListBase *list = knife_get_face_kedges(kcd, ob_index, f);
|
|
LISTBASE_FOREACH (LinkData *, ref, list) {
|
|
KnifeEdge *kfe = static_cast<KnifeEdge *>(ref->data);
|
|
float test_cagep[3];
|
|
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
|
|
/* Get the closest point on the edge. */
|
|
if ((kcd->is_angle_snapping || kcd->axis_constrained) && (kfe != kcd->prev.edge) &&
|
|
(kcd->mode == MODE_DRAGGING))
|
|
{
|
|
/* Check if it is within the edges' bounds. */
|
|
if (!knife_closest_constrain_to_edge(kcd, kfe->v1->cageco, kfe->v2->cageco, test_cagep)) {
|
|
continue;
|
|
}
|
|
}
|
|
else {
|
|
closest_ray_to_segment_v3(ray_orig, ray_dir, kfe->v1->cageco, kfe->v2->cageco, test_cagep);
|
|
}
|
|
|
|
/* Check if we're close enough. */
|
|
float2 closest_ss;
|
|
knife_project_v2(kcd, test_cagep, closest_ss);
|
|
float dis_sq = len_squared_v2v2(closest_ss, curr_cage_ss);
|
|
if (dis_sq >= cur_dist_sq) {
|
|
continue;
|
|
}
|
|
|
|
if (RV3D_CLIPPING_ENABLED(kcd->vc.v3d, kcd->vc.rv3d)) {
|
|
/* Check we're in the view */
|
|
if (ED_view3d_clipping_test(kcd->vc.rv3d, test_cagep, false)) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
cur_dist_sq = dis_sq;
|
|
|
|
r_kpd->edge = kfe;
|
|
if (kcd->snap_midpoints) {
|
|
mid_v3_v3v3(r_kpd->cage, kfe->v1->cageco, kfe->v2->cageco);
|
|
knife_project_v2(kcd, r_kpd->cage, r_kpd->mval);
|
|
}
|
|
else {
|
|
copy_v3_v3(r_kpd->cage, test_cagep);
|
|
r_kpd->mval = closest_ss;
|
|
}
|
|
|
|
has_hit = true;
|
|
}
|
|
|
|
return has_hit;
|
|
}
|
|
|
|
/* Find a vertex near the mouse cursor, if it exists. */
|
|
static bool knife_find_closest_vert_of_edge(KnifeTool_OpData *kcd,
|
|
const KnifeEdge *kfe,
|
|
const float2 &cage_ss,
|
|
KnifePosData *r_kpd)
|
|
{
|
|
float maxdist;
|
|
|
|
if (kcd->is_interactive) {
|
|
maxdist = knife_snap_size(kcd, kcd->vthresh);
|
|
if (kcd->ignore_vert_snapping) {
|
|
maxdist *= 0.5f;
|
|
}
|
|
}
|
|
else {
|
|
maxdist = KNIFE_FLT_EPS;
|
|
}
|
|
|
|
const float maxdist_sq = maxdist * maxdist;
|
|
KnifeVert *curv = nullptr;
|
|
float cur_kfv_sco[2];
|
|
float dis_sq, curdis_sq = FLT_MAX;
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
KnifeVert *kfv = i ? kfe->v2 : kfe->v1;
|
|
float kfv_sco[2];
|
|
|
|
knife_project_v2(kcd, kfv->cageco, kfv_sco);
|
|
|
|
/* Be strict when in a constrained mode, the vertex needs to be very close to the cut line,
|
|
* or we ignore. */
|
|
if ((kcd->is_angle_snapping || kcd->axis_constrained) && (kcd->mode == MODE_DRAGGING)) {
|
|
if (dist_squared_to_line_segment_v2(kfv_sco, kcd->prev.mval, kcd->curr.mval) >
|
|
KNIFE_FLT_EPSBIG)
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
|
|
dis_sq = len_squared_v2v2(kfv_sco, cage_ss);
|
|
if (dis_sq < curdis_sq && dis_sq < maxdist_sq) {
|
|
if (!RV3D_CLIPPING_ENABLED(kcd->vc.v3d, kcd->vc.rv3d) ||
|
|
!ED_view3d_clipping_test(kcd->vc.rv3d, kfv->cageco, false))
|
|
{
|
|
curv = kfv;
|
|
curdis_sq = dis_sq;
|
|
copy_v2_v2(cur_kfv_sco, kfv_sco);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (curv) {
|
|
r_kpd->cage = curv->cageco;
|
|
r_kpd->vert = curv;
|
|
|
|
/* Update mouse coordinates to the snapped-to vertex's screen coordinates
|
|
* this is important for angle snap, which uses the previous mouse position. */
|
|
r_kpd->mval = cur_kfv_sco;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Snaps a 2d vector to an angle, relative to \a v_ref.
|
|
*/
|
|
static float knife_snap_v3_angle(
|
|
float3 &r, const float3 &dvec, const float3 &vecx, const float3 &axis, float angle_snap)
|
|
{
|
|
const float angle = angle_signed_on_axis_v3v3_v3(dvec, vecx, axis);
|
|
const float angle_delta = (roundf(angle / angle_snap) * angle_snap) - angle;
|
|
rotate_normalized_v3_v3v3fl(r, dvec, axis, angle_delta);
|
|
return angle + angle_delta;
|
|
}
|
|
|
|
static bool knife_snap_angle_impl(const KnifeTool_OpData *kcd,
|
|
const float3 &vec_x,
|
|
const float3 &axis,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir,
|
|
float3 &r_cage,
|
|
float &r_angle)
|
|
{
|
|
float3 curr_cage_projected;
|
|
if (!isect_line_plane_v3(
|
|
curr_cage_projected, ray_orig, ray_orig + ray_dir, kcd->prev.cage, axis))
|
|
{
|
|
return false;
|
|
}
|
|
const float3 dvec = curr_cage_projected - kcd->prev.cage;
|
|
float snap_step;
|
|
/* Currently user can input any float between 0 and 180. */
|
|
if (kcd->angle_snapping_increment > KNIFE_MIN_ANGLE_SNAPPING_INCREMENT &&
|
|
kcd->angle_snapping_increment <= KNIFE_MAX_ANGLE_SNAPPING_INCREMENT)
|
|
{
|
|
snap_step = DEG2RADF(kcd->angle_snapping_increment);
|
|
}
|
|
else {
|
|
snap_step = DEG2RADF(KNIFE_DEFAULT_ANGLE_SNAPPING_INCREMENT);
|
|
}
|
|
|
|
if (is_zero_v2(dvec)) {
|
|
return false;
|
|
}
|
|
|
|
float3 dvec_snap;
|
|
r_angle = knife_snap_v3_angle(dvec_snap, dvec, vec_x, axis, snap_step);
|
|
r_cage = kcd->prev.cage + dvec_snap;
|
|
return true;
|
|
}
|
|
|
|
/* Update both kcd->curr.mval and kcd->mval to snap to required angle. */
|
|
static bool knife_snap_angle_screen(const KnifeTool_OpData *kcd,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir,
|
|
float3 &r_cage,
|
|
float &r_angle)
|
|
{
|
|
const float3 &vec_x = kcd->vc.rv3d->viewinv[0];
|
|
const float3 &vec_z = kcd->vc.rv3d->viewinv[2];
|
|
return knife_snap_angle_impl(kcd, vec_x, vec_z, ray_orig, ray_dir, r_cage, r_angle);
|
|
}
|
|
|
|
/* Snap to required angle along the plane of the face nearest to kcd->prev. */
|
|
static bool knife_snap_angle_relative(KnifeTool_OpData *kcd,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir,
|
|
float3 &r_cage,
|
|
float &r_angle)
|
|
{
|
|
BMFace *fcurr = knife_bvh_raycast(kcd, ray_orig, ray_dir, 0.0f, nullptr, nullptr, nullptr);
|
|
|
|
if (!fcurr) {
|
|
return false;
|
|
}
|
|
|
|
/* Calculate a reference vector using previous cut segment, edge or vertex.
|
|
* If none exists then exit. */
|
|
float3 refv;
|
|
if (kcd->prev.vert) {
|
|
int count = 0;
|
|
LISTBASE_FOREACH (LinkData *, ref, &kcd->prev.vert->edges) {
|
|
KnifeEdge *kfe = ((KnifeEdge *)(ref->data));
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
if (kfe->e) {
|
|
if (!BM_edge_in_face(kfe->e, fcurr)) {
|
|
continue;
|
|
}
|
|
}
|
|
if (count == kcd->snap_edge) {
|
|
KnifeVert *kfv = compare_v3v3(kfe->v1->cageco, kcd->prev.cage, KNIFE_FLT_EPSBIG) ?
|
|
kfe->v2 :
|
|
kfe->v1;
|
|
refv = kfv->cageco - kcd->prev.cage;
|
|
kcd->snap_ref_edge = kfe;
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
}
|
|
else if (kcd->prev.edge) {
|
|
KnifeVert *kfv = compare_v3v3(kcd->prev.edge->v1->cageco, kcd->prev.cage, KNIFE_FLT_EPSBIG) ?
|
|
kcd->prev.edge->v2 :
|
|
kcd->prev.edge->v1;
|
|
refv = kfv->cageco - kcd->prev.cage;
|
|
kcd->snap_ref_edge = kcd->prev.edge;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
|
|
/* Choose best face for plane. */
|
|
BMFace *fprev = nullptr;
|
|
int fprev_ob_index = kcd->prev.ob_index;
|
|
if (kcd->prev.vert && kcd->prev.vert->v) {
|
|
LISTBASE_FOREACH (LinkData *, ref, &kcd->prev.vert->faces) {
|
|
BMFace *f = ((BMFace *)(ref->data));
|
|
if (f == fcurr) {
|
|
fprev = f;
|
|
}
|
|
}
|
|
}
|
|
else if (kcd->prev.edge) {
|
|
LISTBASE_FOREACH (LinkData *, ref, &kcd->prev.edge->faces) {
|
|
BMFace *f = ((BMFace *)(ref->data));
|
|
if (f == fcurr) {
|
|
fprev = f;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
/* Cut segment was started in a face. */
|
|
float3 prev_ray_orig, prev_ray_dir;
|
|
ED_view3d_win_to_ray_clipped(kcd->vc.depsgraph,
|
|
kcd->region,
|
|
kcd->vc.v3d,
|
|
kcd->prev.mval,
|
|
prev_ray_orig,
|
|
prev_ray_dir,
|
|
false);
|
|
|
|
/* kcd->prev.face is usually not set. */
|
|
fprev = knife_bvh_raycast(
|
|
kcd, prev_ray_orig, prev_ray_dir, 0.0f, nullptr, nullptr, &fprev_ob_index);
|
|
}
|
|
|
|
if (!fprev || fprev != fcurr) {
|
|
return false;
|
|
}
|
|
|
|
/* Use normal global direction. */
|
|
Object *ob = kcd->objects[fprev_ob_index];
|
|
float3 no_global = fprev->no;
|
|
mul_transposed_mat3_m4_v3(ob->world_to_object().ptr(), no_global);
|
|
normalize_v3(no_global);
|
|
|
|
return knife_snap_angle_impl(kcd, refv, no_global, ray_orig, ray_dir, r_cage, r_angle);
|
|
}
|
|
|
|
static int knife_calculate_snap_ref_edges(KnifeTool_OpData *kcd,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir)
|
|
{
|
|
BMFace *fcurr = knife_bvh_raycast(kcd, ray_orig, ray_dir, 0.0f, nullptr, nullptr, nullptr);
|
|
|
|
int count = 0;
|
|
|
|
if (!fcurr) {
|
|
return count;
|
|
}
|
|
|
|
if (kcd->prev.vert) {
|
|
LISTBASE_FOREACH (LinkData *, ref, &kcd->prev.vert->edges) {
|
|
KnifeEdge *kfe = ((KnifeEdge *)(ref->data));
|
|
if (kfe->is_invalid) {
|
|
continue;
|
|
}
|
|
if (kfe->e) {
|
|
if (!BM_edge_in_face(kfe->e, fcurr)) {
|
|
continue;
|
|
}
|
|
}
|
|
count++;
|
|
}
|
|
}
|
|
else if (kcd->prev.edge) {
|
|
return 1;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
/* Reset the snapping angle num input. */
|
|
static void knife_reset_snap_angle_input(KnifeTool_OpData *kcd)
|
|
{
|
|
kcd->num.val[0] = 0;
|
|
while (kcd->num.str_cur > 0) {
|
|
kcd->num.str[kcd->num.str_cur - 1] = '\0';
|
|
kcd->num.str_cur--;
|
|
}
|
|
}
|
|
/**
|
|
* Constrains the current cut to an axis.
|
|
* If scene orientation is set to anything other than global it takes priority.
|
|
* Otherwise kcd->constrain_axis_mode is used.
|
|
*/
|
|
static void knife_constrain_axis(const KnifeTool_OpData *kcd,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir,
|
|
float3 &r_cage)
|
|
{
|
|
float3 constrain_dir;
|
|
{
|
|
/* Constrain axes. */
|
|
Scene *scene = kcd->scene;
|
|
ViewLayer *view_layer = kcd->vc.view_layer;
|
|
Object *obedit = (kcd->prev.ob_index != -1) ? kcd->objects[kcd->prev.ob_index] :
|
|
kcd->vc.obedit;
|
|
RegionView3D *rv3d = static_cast<RegionView3D *>(kcd->region->regiondata);
|
|
const short scene_orientation = BKE_scene_orientation_get_index(scene, SCE_ORIENT_DEFAULT);
|
|
/* Scene orientation takes priority. */
|
|
const short orientation_type = scene_orientation ? scene_orientation :
|
|
kcd->constrain_axis_mode - 1;
|
|
const int pivot_point = scene->toolsettings->transform_pivot_point;
|
|
float mat[3][3];
|
|
blender::ed::transform::calc_orientation_from_type_ex(
|
|
scene, view_layer, kcd->vc.v3d, rv3d, obedit, obedit, orientation_type, pivot_point, mat);
|
|
|
|
constrain_dir = mat[kcd->constrain_axis - 1];
|
|
}
|
|
|
|
float lambda;
|
|
if (!isect_ray_ray_v3(kcd->prev.cage, constrain_dir, ray_orig, ray_dir, &lambda, nullptr)) {
|
|
return;
|
|
}
|
|
|
|
float3 cage_dir = constrain_dir * lambda;
|
|
if (math::is_zero(cage_dir)) {
|
|
return;
|
|
}
|
|
|
|
r_cage = kcd->prev.cage + cage_dir;
|
|
}
|
|
|
|
static void knife_snap_curr(KnifeTool_OpData *kcd,
|
|
const float2 &mval,
|
|
const float3 &ray_orig,
|
|
const float3 &ray_dir)
|
|
{
|
|
knife_pos_data_clear(&kcd->curr);
|
|
|
|
if (knife_find_closest_face(kcd, mval, ray_orig, ray_dir, &kcd->curr)) {
|
|
if (!kcd->ignore_edge_snapping || !kcd->ignore_vert_snapping) {
|
|
KnifePosData kpos_tmp = kcd->curr;
|
|
if (knife_find_closest_edge_of_face(kcd,
|
|
kcd->curr.ob_index,
|
|
kcd->curr.bmface,
|
|
kcd->curr.mval,
|
|
ray_orig,
|
|
ray_dir,
|
|
&kpos_tmp))
|
|
{
|
|
if (!kcd->ignore_edge_snapping) {
|
|
kcd->curr = kpos_tmp;
|
|
}
|
|
if (!kcd->ignore_vert_snapping) {
|
|
knife_find_closest_vert_of_edge(kcd, kpos_tmp.edge, kpos_tmp.mval, &kcd->curr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (kcd->curr.vert || kcd->curr.edge || kcd->curr.bmface) {
|
|
return;
|
|
}
|
|
|
|
/* If no hits are found this would normally default to (0, 0, 0) so instead
|
|
* get a point at the mouse ray closest to the previous point.
|
|
* Note that drawing lines in `free-space` isn't properly supported
|
|
* but there's no guarantee (0, 0, 0) has any geometry either - campbell */
|
|
|
|
kcd->curr.mval = mval;
|
|
if (!isect_line_plane_v3(
|
|
kcd->curr.cage, ray_orig, ray_orig + ray_dir, kcd->prev.cage, kcd->vc.rv3d->viewinv[2]))
|
|
{
|
|
/* Should never fail! */
|
|
kcd->curr.cage = kcd->prev.cage;
|
|
BLI_assert(0);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* \return true when `kcd->curr.co` & `kcd->curr.cage` are set.
|
|
*
|
|
* In this case `is_space` is nearly always false.
|
|
* There are some situations when vertex or edge can be snapped to, when `is_space` is true.
|
|
* In this case the selection-buffer is used to select the face,
|
|
* then the closest `vert` or `edge` is set, and those will enable `is_co_set`.
|
|
*/
|
|
static void knife_snap_update_from_mval(KnifeTool_OpData *kcd, const float2 &mval)
|
|
{
|
|
/* Mouse and ray with snapping applied. */
|
|
float3 ray_orig;
|
|
float3 ray_dir_constrain;
|
|
float2 mval_constrain = mval;
|
|
ED_view3d_win_to_ray_clipped(
|
|
kcd->vc.depsgraph, kcd->region, kcd->vc.v3d, mval, ray_orig, ray_dir_constrain, false);
|
|
|
|
knife_pos_data_clear(&kcd->curr);
|
|
|
|
/* view matrix may have changed, reproject */
|
|
knife_project_v2(kcd, kcd->prev.cage, kcd->prev.mval);
|
|
|
|
bool is_constrained = false;
|
|
kcd->is_angle_snapping = false;
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
if (kcd->angle_snapping) {
|
|
if (kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_SCREEN) {
|
|
kcd->is_angle_snapping = knife_snap_angle_screen(
|
|
kcd, ray_orig, ray_dir_constrain, kcd->curr.cage, kcd->angle);
|
|
}
|
|
else if (kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) {
|
|
kcd->is_angle_snapping = knife_snap_angle_relative(
|
|
kcd, ray_orig, ray_dir_constrain, kcd->curr.cage, kcd->angle);
|
|
if (kcd->is_angle_snapping) {
|
|
kcd->snap_ref_edges_count = knife_calculate_snap_ref_edges(
|
|
kcd, ray_orig, ray_dir_constrain);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (kcd->is_angle_snapping) {
|
|
is_constrained = true;
|
|
}
|
|
else if (kcd->axis_constrained) {
|
|
knife_constrain_axis(kcd, ray_orig, ray_dir_constrain, kcd->curr.cage);
|
|
is_constrained = true;
|
|
}
|
|
}
|
|
|
|
if (is_constrained) {
|
|
/* Update `ray_dir_constrain` and `mval_constrain`. */
|
|
ray_dir_constrain = math::normalize(kcd->curr.cage - ray_orig);
|
|
knife_project_v2(kcd, kcd->curr.cage, mval_constrain);
|
|
}
|
|
|
|
knife_snap_curr(kcd, mval_constrain, ray_orig, ray_dir_constrain);
|
|
}
|
|
|
|
/**
|
|
* TODO: Undo currently assumes that the most recent cut segment added is
|
|
* the last valid KnifeEdge in the kcd->kedges mempool. This could break in
|
|
* the future so it may be better to store the KnifeEdges for each KnifeUndoFrame
|
|
* on a stack. This stack could then be used instead of iterating over the mempool.
|
|
*/
|
|
static void knifetool_undo(KnifeTool_OpData *kcd)
|
|
{
|
|
KnifeEdge *kfe, *newkfe;
|
|
KnifeEdge *lastkfe = nullptr;
|
|
KnifeVert *v1, *v2;
|
|
KnifeUndoFrame *undo;
|
|
BLI_mempool_iter iterkfe;
|
|
|
|
undo = static_cast<KnifeUndoFrame *>(BLI_stack_peek(kcd->undostack));
|
|
|
|
/* Undo edge splitting. */
|
|
for (int i = 0; i < undo->splits; i++) {
|
|
BLI_stack_pop(kcd->splitstack, &newkfe);
|
|
BLI_stack_pop(kcd->splitstack, &kfe);
|
|
knife_join_edge(newkfe, kfe);
|
|
}
|
|
|
|
for (int i = 0; i < undo->cuts; i++) {
|
|
|
|
BLI_mempool_iternew(kcd->kedges, &iterkfe);
|
|
for (kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iterkfe)); kfe;
|
|
kfe = static_cast<KnifeEdge *>(BLI_mempool_iterstep(&iterkfe)))
|
|
{
|
|
if (!kfe->is_cut || kfe->is_invalid || kfe->splits) {
|
|
continue;
|
|
}
|
|
lastkfe = kfe;
|
|
}
|
|
|
|
if (lastkfe) {
|
|
lastkfe->is_invalid = true;
|
|
|
|
/* TODO: Are they always guaranteed to be in this order? */
|
|
v1 = lastkfe->v1;
|
|
v2 = lastkfe->v2;
|
|
|
|
/* Only remove first vertex if it is the start segment of the cut. */
|
|
if (!v1->is_invalid && !v1->is_splitting) {
|
|
v1->is_invalid = true;
|
|
/* If the first vertex is touching any other cut edges don't remove it. */
|
|
LISTBASE_FOREACH (LinkData *, ref, &v1->edges) {
|
|
kfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (kfe->is_cut && !kfe->is_invalid) {
|
|
v1->is_invalid = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Only remove second vertex if it is the end segment of the cut. */
|
|
if (!v2->is_invalid && !v2->is_splitting) {
|
|
v2->is_invalid = true;
|
|
/* If the second vertex is touching any other cut edges don't remove it. */
|
|
LISTBASE_FOREACH (LinkData *, ref, &v2->edges) {
|
|
kfe = static_cast<KnifeEdge *>(ref->data);
|
|
if (kfe->is_cut && !kfe->is_invalid) {
|
|
v2->is_invalid = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ELEM(kcd->mode, MODE_DRAGGING, MODE_IDLE)) {
|
|
/* Restore kcd->prev. */
|
|
kcd->prev = undo->pos;
|
|
}
|
|
|
|
/* Restore data for distance and angle measurements. */
|
|
kcd->mdata = undo->mdata;
|
|
|
|
BLI_stack_discard(kcd->undostack);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name #KnifeObjectInfo (#kcd->objects_info) Init and Free
|
|
* \{ */
|
|
|
|
static void knifetool_init_obinfo(KnifeTool_OpData *kcd,
|
|
Object *ob,
|
|
int ob_index,
|
|
bool use_tri_indices)
|
|
{
|
|
|
|
Scene *scene_eval = (Scene *)DEG_get_evaluated_id(kcd->vc.depsgraph, &kcd->scene->id);
|
|
Object *obedit_eval = (Object *)DEG_get_evaluated_id(kcd->vc.depsgraph, &ob->id);
|
|
BMEditMesh *em_eval = BKE_editmesh_from_object(obedit_eval);
|
|
|
|
BM_mesh_elem_index_ensure(em_eval->bm, BM_VERT);
|
|
|
|
KnifeObjectInfo *obinfo = &kcd->objects_info[ob_index];
|
|
obinfo->em = em_eval;
|
|
obinfo->positions_cage = BKE_editmesh_vert_coords_alloc(
|
|
kcd->vc.depsgraph, em_eval, scene_eval, obedit_eval);
|
|
|
|
if (use_tri_indices) {
|
|
obinfo->tri_indices.reinitialize(em_eval->looptris.size());
|
|
for (int i = 0; i < em_eval->looptris.size(); i++) {
|
|
const std::array<BMLoop *, 3> <ri = em_eval->looptris[i];
|
|
obinfo->tri_indices[i][0] = BM_elem_index_get(ltri[0]->v);
|
|
obinfo->tri_indices[i][1] = BM_elem_index_get(ltri[1]->v);
|
|
obinfo->tri_indices[i][2] = BM_elem_index_get(ltri[2]->v);
|
|
}
|
|
}
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name #KnifeTool_OpData (#op->customdata) Init and Free
|
|
* \{ */
|
|
|
|
static void knife_init_colors(KnifeColors *colors)
|
|
{
|
|
/* Possible BMESH_TODO: add explicit themes or calculate these by
|
|
* figuring out contrasting colors with grid / edges / verts
|
|
* a la UI_make_axis_color. */
|
|
UI_GetThemeColorType3ubv(TH_GIZMO_PRIMARY, SPACE_VIEW3D, colors->line);
|
|
UI_GetThemeColorType3ubv(TH_GIZMO_A, SPACE_VIEW3D, colors->edge);
|
|
UI_GetThemeColorType3ubv(TH_GIZMO_B, SPACE_VIEW3D, colors->edge_extra);
|
|
UI_GetThemeColorType3ubv(TH_GIZMO_SECONDARY, SPACE_VIEW3D, colors->curpoint);
|
|
UI_GetThemeColorType3ubv(TH_GIZMO_SECONDARY, SPACE_VIEW3D, colors->curpoint_a);
|
|
colors->curpoint_a[3] = 102;
|
|
UI_GetThemeColorType3ubv(TH_VERTEX, SPACE_VIEW3D, colors->point);
|
|
UI_GetThemeColorType3ubv(TH_VERTEX, SPACE_VIEW3D, colors->point_a);
|
|
colors->point_a[3] = 102;
|
|
|
|
UI_GetThemeColorType3ubv(TH_AXIS_X, SPACE_VIEW3D, colors->xaxis);
|
|
UI_GetThemeColorType3ubv(TH_AXIS_Y, SPACE_VIEW3D, colors->yaxis);
|
|
UI_GetThemeColorType3ubv(TH_AXIS_Z, SPACE_VIEW3D, colors->zaxis);
|
|
UI_GetThemeColorType3ubv(TH_TRANSFORM, SPACE_VIEW3D, colors->axis_extra);
|
|
}
|
|
|
|
/* called when modal loop selection gets set up... */
|
|
static void knifetool_init(ViewContext *vc,
|
|
KnifeTool_OpData *kcd,
|
|
Vector<Object *> objects,
|
|
const bool only_select,
|
|
const bool cut_through,
|
|
const bool xray,
|
|
const int visible_measurements,
|
|
const int angle_snapping,
|
|
const float angle_snapping_increment,
|
|
const bool is_interactive)
|
|
{
|
|
/* Needed so multiple non-interactive cuts (also called knife-project)
|
|
* doesn't access indices of loops that were created by cutting, see: #97153. */
|
|
bool use_tri_indices = !is_interactive;
|
|
|
|
kcd->vc = *vc;
|
|
|
|
Scene *scene = vc->scene;
|
|
|
|
/* Assign the drawing handle for drawing preview line... */
|
|
kcd->scene = scene;
|
|
kcd->region = vc->region;
|
|
|
|
kcd->objects = std::move(objects);
|
|
|
|
Object *ob;
|
|
BMEditMesh *em;
|
|
kcd->objects_info.reinitialize(kcd->objects.size());
|
|
for (int ob_index = 0; ob_index < kcd->objects.size(); ob_index++) {
|
|
ob = kcd->objects[ob_index];
|
|
em = BKE_editmesh_from_object(ob);
|
|
knifetool_init_obinfo(kcd, ob, ob_index, use_tri_indices);
|
|
|
|
/* Can't usefully select resulting edges in face mode. */
|
|
kcd->select_result = (em->selectmode != SCE_SELECT_FACE);
|
|
}
|
|
knife_bvh_init(kcd);
|
|
|
|
/* Cut all the way through the mesh if use_occlude_geometry button not pushed. */
|
|
kcd->is_interactive = is_interactive;
|
|
kcd->cut_through = cut_through;
|
|
kcd->only_select = only_select;
|
|
kcd->depth_test = xray;
|
|
kcd->dist_angle_mode = visible_measurements;
|
|
kcd->show_dist_angle = (kcd->dist_angle_mode != KNF_MEASUREMENT_NONE);
|
|
kcd->angle_snapping_mode = angle_snapping;
|
|
kcd->angle_snapping = (kcd->angle_snapping_mode != KNF_CONSTRAIN_ANGLE_MODE_NONE);
|
|
kcd->angle_snapping_increment = angle_snapping_increment;
|
|
|
|
kcd->arena = BLI_memarena_new(MEM_SIZE_OPTIMAL(1 << 15), "knife");
|
|
#ifdef USE_NET_ISLAND_CONNECT
|
|
kcd->edgenet.arena = BLI_memarena_new(MEM_SIZE_OPTIMAL(1 << 15), __func__);
|
|
#endif
|
|
kcd->edgenet.edge_visit = BLI_gset_ptr_new(__func__);
|
|
|
|
kcd->vthresh = KMAXDIST - 1;
|
|
kcd->ethresh = KMAXDIST;
|
|
|
|
knife_recalc_ortho(kcd);
|
|
|
|
ED_region_tag_redraw(kcd->region);
|
|
|
|
kcd->refs = BLI_mempool_create(sizeof(LinkData), 0, 2048, 0);
|
|
kcd->kverts = BLI_mempool_create(sizeof(KnifeVert), 0, 512, BLI_MEMPOOL_ALLOW_ITER);
|
|
kcd->kedges = BLI_mempool_create(sizeof(KnifeEdge), 0, 512, BLI_MEMPOOL_ALLOW_ITER);
|
|
|
|
kcd->undostack = BLI_stack_new(sizeof(KnifeUndoFrame), "knife undostack");
|
|
kcd->splitstack = BLI_stack_new(sizeof(KnifeEdge *), "knife splitstack");
|
|
|
|
kcd->origedgemap = BLI_ghash_ptr_new("knife origedgemap");
|
|
kcd->origvertmap = BLI_ghash_ptr_new("knife origvertmap");
|
|
kcd->kedgefacemap = BLI_ghash_ptr_new("knife kedgefacemap");
|
|
kcd->facetrimap = BLI_ghash_ptr_new("knife facetrimap");
|
|
|
|
knife_pos_data_clear(&kcd->curr);
|
|
knife_pos_data_clear(&kcd->prev);
|
|
|
|
if (is_interactive) {
|
|
kcd->draw_handle = ED_region_draw_cb_activate(
|
|
kcd->region->runtime->type, knifetool_draw, kcd, REGION_DRAW_POST_VIEW);
|
|
|
|
knife_init_colors(&kcd->colors);
|
|
}
|
|
|
|
kcd->no_cuts = true;
|
|
|
|
kcd->axis_string[0] = ' ';
|
|
kcd->axis_string[1] = '\0';
|
|
|
|
/* Initialize number input handling for angle snapping. */
|
|
initNumInput(&kcd->num);
|
|
kcd->num.idx_max = 0;
|
|
kcd->num.val_flag[0] |= NUM_NO_NEGATIVE;
|
|
kcd->num.unit_sys = scene->unit.system;
|
|
kcd->num.unit_type[0] = B_UNIT_NONE;
|
|
}
|
|
|
|
/* called when modal loop selection is done... */
|
|
static void knifetool_exit_ex(KnifeTool_OpData *kcd)
|
|
{
|
|
if (!kcd) {
|
|
return;
|
|
}
|
|
|
|
if (kcd->is_interactive) {
|
|
WM_cursor_modal_restore(kcd->vc.win);
|
|
|
|
/* Deactivate the extra drawing stuff in 3D-View. */
|
|
ED_region_draw_cb_exit(kcd->region->runtime->type, kcd->draw_handle);
|
|
}
|
|
|
|
/* Free the custom data. */
|
|
BLI_mempool_destroy(kcd->refs);
|
|
BLI_mempool_destroy(kcd->kverts);
|
|
BLI_mempool_destroy(kcd->kedges);
|
|
|
|
BLI_stack_free(kcd->undostack);
|
|
BLI_stack_free(kcd->splitstack);
|
|
|
|
BLI_ghash_free(kcd->origedgemap, nullptr, nullptr);
|
|
BLI_ghash_free(kcd->origvertmap, nullptr, nullptr);
|
|
BLI_ghash_free(kcd->kedgefacemap, nullptr, nullptr);
|
|
BLI_ghash_free(kcd->facetrimap, nullptr, nullptr);
|
|
|
|
BLI_memarena_free(kcd->arena);
|
|
#ifdef USE_NET_ISLAND_CONNECT
|
|
BLI_memarena_free(kcd->edgenet.arena);
|
|
#endif
|
|
BLI_gset_free(kcd->edgenet.edge_visit, nullptr);
|
|
|
|
/* Tag for redraw. */
|
|
ED_region_tag_redraw(kcd->region);
|
|
|
|
/* Knife BVH cleanup. */
|
|
knife_bvh_free(kcd);
|
|
|
|
/* Destroy kcd itself. */
|
|
MEM_delete(kcd);
|
|
}
|
|
|
|
static void knifetool_exit(wmOperator *op)
|
|
{
|
|
KnifeTool_OpData *kcd = static_cast<KnifeTool_OpData *>(op->customdata);
|
|
knifetool_exit_ex(kcd);
|
|
op->customdata = nullptr;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Mouse-Moving Event Updates
|
|
* \{ */
|
|
|
|
/** Update active knife edge/vert pointers. */
|
|
static int knife_update_active(KnifeTool_OpData *kcd, const float2 &mval)
|
|
{
|
|
knife_snap_update_from_mval(kcd, mval);
|
|
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
knife_find_line_hits(kcd);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void knifetool_update_mval(KnifeTool_OpData *kcd, const float2 &mval)
|
|
{
|
|
knife_recalc_ortho(kcd);
|
|
|
|
if (knife_update_active(kcd, mval)) {
|
|
ED_region_tag_redraw(kcd->region);
|
|
}
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Finalization
|
|
* \{ */
|
|
|
|
static void knifetool_finish_single_pre(KnifeTool_OpData *kcd, int ob_index)
|
|
{
|
|
knife_make_cuts(kcd, ob_index);
|
|
}
|
|
|
|
/**
|
|
* A post version is needed to delay recalculating tessellation after making cuts.
|
|
* Without this, knife-project can't use the BVH tree to select geometry after a cut, see: #98349.
|
|
*/
|
|
static void knifetool_finish_single_post(KnifeTool_OpData * /*kcd*/, Object *ob)
|
|
{
|
|
BMEditMesh *em = BKE_editmesh_from_object(ob);
|
|
EDBM_selectmode_flush(em);
|
|
EDBMUpdate_Params params{};
|
|
params.calc_looptris = true;
|
|
params.calc_normals = true;
|
|
params.is_destructive = true;
|
|
EDBM_update(static_cast<Mesh *>(ob->data), ¶ms);
|
|
}
|
|
|
|
/* Called on tool confirmation. */
|
|
static void knifetool_finish_ex(KnifeTool_OpData *kcd)
|
|
{
|
|
/* Separate pre/post passes are needed because `em->looptris` recalculation from the 'post' pass
|
|
* causes triangle indices in #KnifeTool_OpData.bvh to get out of sync.
|
|
* So perform all the cuts before doing any mesh recalculation, see: #101721. */
|
|
for (int ob_index : kcd->objects.index_range()) {
|
|
knifetool_finish_single_pre(kcd, ob_index);
|
|
}
|
|
for (Object *ob : kcd->objects) {
|
|
knifetool_finish_single_post(kcd, ob);
|
|
}
|
|
}
|
|
|
|
static void knifetool_finish(wmOperator *op)
|
|
{
|
|
KnifeTool_OpData *kcd = static_cast<KnifeTool_OpData *>(op->customdata);
|
|
knifetool_finish_ex(kcd);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Operator (#MESH_OT_knife_tool)
|
|
* \{ */
|
|
|
|
static void knifetool_cancel(bContext * /*C*/, wmOperator *op)
|
|
{
|
|
/* this is just a wrapper around exit() */
|
|
knifetool_exit(op);
|
|
}
|
|
|
|
wmKeyMap *knifetool_modal_keymap(wmKeyConfig *keyconf)
|
|
{
|
|
static const EnumPropertyItem modal_items[] = {
|
|
{KNF_MODAL_CANCEL, "CANCEL", 0, "Cancel", ""},
|
|
{KNF_MODAL_CONFIRM, "CONFIRM", 0, "Confirm", ""},
|
|
{KNF_MODAL_UNDO, "UNDO", 0, "Undo", ""},
|
|
{KNF_MODAL_MIDPOINT_ON, "SNAP_MIDPOINTS_ON", 0, "Snap to Midpoints On", ""},
|
|
{KNF_MODAL_MIDPOINT_OFF, "SNAP_MIDPOINTS_OFF", 0, "Snap to Midpoints Off", ""},
|
|
{KNF_MODAL_IGNORE_SNAP_ON, "IGNORE_SNAP_ON", 0, "Ignore Snapping On", ""},
|
|
{KNF_MODAL_IGNORE_SNAP_OFF, "IGNORE_SNAP_OFF", 0, "Ignore Snapping Off", ""},
|
|
{KNF_MODAL_ANGLE_SNAP_TOGGLE, "ANGLE_SNAP_TOGGLE", 0, "Toggle Angle Snapping", ""},
|
|
{KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE,
|
|
"CYCLE_ANGLE_SNAP_EDGE",
|
|
0,
|
|
"Cycle Angle Snapping Relative Edge",
|
|
""},
|
|
{KNF_MODAL_CUT_THROUGH_TOGGLE, "CUT_THROUGH_TOGGLE", 0, "Toggle Cut Through", ""},
|
|
{KNF_MODAL_SHOW_DISTANCE_ANGLE_TOGGLE,
|
|
"SHOW_DISTANCE_ANGLE_TOGGLE",
|
|
0,
|
|
"Toggle Distance and Angle Measurements",
|
|
""},
|
|
{KNF_MODAL_DEPTH_TEST_TOGGLE, "DEPTH_TEST_TOGGLE", 0, "Toggle Depth Testing", ""},
|
|
{KNF_MODAL_NEW_CUT, "NEW_CUT", 0, "End Current Cut", ""},
|
|
{KNF_MODAL_ADD_CUT, "ADD_CUT", 0, "Add Cut", ""},
|
|
{KNF_MODAL_ADD_CUT_CLOSED, "ADD_CUT_CLOSED", 0, "Add Cut Closed", ""},
|
|
{KNF_MODAL_PANNING, "PANNING", 0, "Panning", ""},
|
|
{KNF_MODAL_X_AXIS, "X_AXIS", 0, "X Axis Locking", ""},
|
|
{KNF_MODAL_Y_AXIS, "Y_AXIS", 0, "Y Axis Locking", ""},
|
|
{KNF_MODAL_Z_AXIS, "Z_AXIS", 0, "Z Axis Locking", ""},
|
|
{0, nullptr, 0, nullptr, nullptr},
|
|
};
|
|
|
|
wmKeyMap *keymap = WM_modalkeymap_find(keyconf, "Knife Tool Modal Map");
|
|
|
|
/* This function is called for each space-type, only needs to add map once. */
|
|
if (keymap && keymap->modal_items) {
|
|
return nullptr;
|
|
}
|
|
|
|
keymap = WM_modalkeymap_ensure(keyconf, "Knife Tool Modal Map", modal_items);
|
|
|
|
WM_modalkeymap_assign(keymap, "MESH_OT_knife_tool");
|
|
|
|
return keymap;
|
|
}
|
|
|
|
/* Turn off angle snapping. */
|
|
static void knifetool_disable_angle_snapping(KnifeTool_OpData *kcd)
|
|
{
|
|
kcd->angle_snapping_mode = KNF_CONSTRAIN_ANGLE_MODE_NONE;
|
|
kcd->angle_snapping = false;
|
|
kcd->is_angle_snapping = false;
|
|
}
|
|
|
|
/* Turn off orientation locking. */
|
|
static void knifetool_disable_orientation_locking(KnifeTool_OpData *kcd)
|
|
{
|
|
kcd->constrain_axis = KNF_CONSTRAIN_AXIS_MODE_NONE;
|
|
kcd->constrain_axis_mode = KNF_CONSTRAIN_AXIS_MODE_NONE;
|
|
kcd->axis_constrained = false;
|
|
}
|
|
|
|
static int knifetool_modal(bContext *C, wmOperator *op, const wmEvent *event)
|
|
{
|
|
KnifeTool_OpData *kcd = static_cast<KnifeTool_OpData *>(op->customdata);
|
|
bool do_refresh = false;
|
|
|
|
Object *ob = (kcd->curr.ob_index != -1) ? kcd->objects[kcd->curr.ob_index] : kcd->vc.obedit;
|
|
if (!ob || ob->type != OB_MESH) {
|
|
knifetool_exit(op);
|
|
ED_workspace_status_text(C, nullptr);
|
|
return OPERATOR_FINISHED;
|
|
}
|
|
|
|
kcd->region = kcd->vc.region;
|
|
|
|
ED_view3d_init_mats_rv3d(ob, kcd->vc.rv3d); /* Needed to initialize clipping. */
|
|
|
|
if (kcd->mode == MODE_PANNING) {
|
|
kcd->mode = KnifeMode(kcd->prevmode);
|
|
}
|
|
|
|
bool handled = false;
|
|
float snapping_increment_temp;
|
|
const float2 mval = {float(event->mval[0]), float(event->mval[1])};
|
|
|
|
if (kcd->angle_snapping) {
|
|
if (kcd->num.str_cur >= 3 ||
|
|
kcd->angle_snapping_increment > KNIFE_MAX_ANGLE_SNAPPING_INCREMENT / 10)
|
|
{
|
|
knife_reset_snap_angle_input(kcd);
|
|
}
|
|
knife_update_header(C, op, kcd); /* Update the angle multiple. */
|
|
/* Modal numinput active, try to handle numeric inputs first... */
|
|
if (event->val == KM_PRESS && hasNumInput(&kcd->num) && handleNumInput(C, &kcd->num, event)) {
|
|
handled = true;
|
|
applyNumInput(&kcd->num, &snapping_increment_temp);
|
|
/* Restrict number key input to 0 - 180 degree range. */
|
|
if (snapping_increment_temp > KNIFE_MIN_ANGLE_SNAPPING_INCREMENT &&
|
|
snapping_increment_temp <= KNIFE_MAX_ANGLE_SNAPPING_INCREMENT)
|
|
{
|
|
kcd->angle_snapping_increment = snapping_increment_temp;
|
|
}
|
|
knife_update_active(kcd, mval);
|
|
knife_update_header(C, op, kcd);
|
|
ED_region_tag_redraw(kcd->region);
|
|
return OPERATOR_RUNNING_MODAL;
|
|
}
|
|
}
|
|
|
|
/* Handle modal keymap. */
|
|
if (event->type == EVT_MODAL_MAP) {
|
|
switch (event->val) {
|
|
case KNF_MODAL_CANCEL:
|
|
/* finish */
|
|
ED_region_tag_redraw(kcd->region);
|
|
|
|
knifetool_exit(op);
|
|
ED_workspace_status_text(C, nullptr);
|
|
|
|
return OPERATOR_CANCELLED;
|
|
case KNF_MODAL_CONFIRM: {
|
|
const bool changed = (kcd->totkvert != 0);
|
|
/* finish */
|
|
ED_region_tag_redraw(kcd->region);
|
|
|
|
knifetool_finish(op);
|
|
knifetool_exit(op);
|
|
ED_workspace_status_text(C, nullptr);
|
|
|
|
/* Cancel to prevent undo push for empty cuts. */
|
|
if (!changed) {
|
|
return OPERATOR_CANCELLED;
|
|
}
|
|
return OPERATOR_FINISHED;
|
|
}
|
|
case KNF_MODAL_UNDO:
|
|
if (BLI_stack_is_empty(kcd->undostack)) {
|
|
ED_region_tag_redraw(kcd->region);
|
|
knifetool_exit(op);
|
|
ED_workspace_status_text(C, nullptr);
|
|
return OPERATOR_CANCELLED;
|
|
}
|
|
knifetool_undo(kcd);
|
|
knife_update_active(kcd, mval);
|
|
ED_region_tag_redraw(kcd->region);
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_MIDPOINT_ON:
|
|
kcd->snap_midpoints = true;
|
|
|
|
knife_recalc_ortho(kcd);
|
|
knife_update_active(kcd, mval);
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_MIDPOINT_OFF:
|
|
kcd->snap_midpoints = false;
|
|
|
|
knife_recalc_ortho(kcd);
|
|
knife_update_active(kcd, mval);
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_IGNORE_SNAP_ON:
|
|
kcd->ignore_vert_snapping = kcd->ignore_edge_snapping = true;
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_IGNORE_SNAP_OFF:
|
|
kcd->ignore_vert_snapping = kcd->ignore_edge_snapping = false;
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_ANGLE_SNAP_TOGGLE:
|
|
if (kcd->angle_snapping_mode != KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) {
|
|
kcd->angle_snapping_mode++;
|
|
kcd->snap_ref_edges_count = 0;
|
|
kcd->snap_edge = 0;
|
|
}
|
|
else {
|
|
kcd->angle_snapping_mode = KNF_CONSTRAIN_ANGLE_MODE_NONE;
|
|
}
|
|
kcd->angle_snapping = (kcd->angle_snapping_mode != KNF_CONSTRAIN_ANGLE_MODE_NONE);
|
|
kcd->angle_snapping_increment = RAD2DEGF(
|
|
RNA_float_get(op->ptr, "angle_snapping_increment"));
|
|
knifetool_disable_orientation_locking(kcd);
|
|
knife_reset_snap_angle_input(kcd);
|
|
knife_update_active(kcd, mval);
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_CYCLE_ANGLE_SNAP_EDGE:
|
|
if (kcd->angle_snapping && kcd->angle_snapping_mode == KNF_CONSTRAIN_ANGLE_MODE_RELATIVE) {
|
|
if (kcd->snap_ref_edges_count) {
|
|
kcd->snap_edge++;
|
|
kcd->snap_edge %= kcd->snap_ref_edges_count;
|
|
knife_snap_update_from_mval(kcd, kcd->curr.mval);
|
|
do_refresh = true;
|
|
handled = true;
|
|
}
|
|
}
|
|
break;
|
|
case KNF_MODAL_CUT_THROUGH_TOGGLE:
|
|
kcd->cut_through = !kcd->cut_through;
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_SHOW_DISTANCE_ANGLE_TOGGLE:
|
|
if (kcd->dist_angle_mode != KNF_MEASUREMENT_ANGLE) {
|
|
kcd->dist_angle_mode++;
|
|
}
|
|
else {
|
|
kcd->dist_angle_mode = KNF_MEASUREMENT_NONE;
|
|
}
|
|
kcd->show_dist_angle = (kcd->dist_angle_mode != KNF_MEASUREMENT_NONE);
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_DEPTH_TEST_TOGGLE:
|
|
kcd->depth_test = !kcd->depth_test;
|
|
do_refresh = true;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_NEW_CUT:
|
|
/* If no cuts have been made, exit.
|
|
* Preserves right click cancel workflow which most tools use,
|
|
* but stops accidentally deleting entire cuts with right click.
|
|
*/
|
|
if (kcd->no_cuts) {
|
|
ED_region_tag_redraw(kcd->region);
|
|
knifetool_exit(op);
|
|
ED_workspace_status_text(C, nullptr);
|
|
return OPERATOR_CANCELLED;
|
|
}
|
|
ED_region_tag_redraw(kcd->region);
|
|
knife_finish_cut(kcd);
|
|
kcd->mode = MODE_IDLE;
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_ADD_CUT:
|
|
kcd->no_cuts = false;
|
|
knife_recalc_ortho(kcd);
|
|
|
|
/* Get the value of the event which triggered this one. */
|
|
if (event->prev_val != KM_RELEASE) {
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
knife_add_cut(kcd);
|
|
}
|
|
else if (kcd->mode != MODE_PANNING) {
|
|
knife_start_cut(kcd, mval);
|
|
kcd->mode = MODE_DRAGGING;
|
|
kcd->init = kcd->curr;
|
|
}
|
|
|
|
/* Freehand drawing is incompatible with cut-through. */
|
|
if (kcd->cut_through == false) {
|
|
kcd->is_drag_hold = true;
|
|
/* No edge snapping while dragging (edges are too sticky when cuts are immediate). */
|
|
kcd->ignore_edge_snapping = true;
|
|
}
|
|
}
|
|
else {
|
|
kcd->is_drag_hold = false;
|
|
kcd->ignore_edge_snapping = false;
|
|
kcd->is_drag_undo = false;
|
|
|
|
/* Needed because the last face 'hit' is ignored when dragging. */
|
|
knifetool_update_mval(kcd, kcd->curr.mval);
|
|
}
|
|
|
|
ED_region_tag_redraw(kcd->region);
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_ADD_CUT_CLOSED:
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
|
|
/* Shouldn't be possible with default key-layout, just in case. */
|
|
if (kcd->is_drag_hold) {
|
|
kcd->is_drag_hold = false;
|
|
kcd->is_drag_undo = false;
|
|
knifetool_update_mval(kcd, kcd->curr.mval);
|
|
}
|
|
|
|
kcd->prev = kcd->curr;
|
|
kcd->curr = kcd->init;
|
|
|
|
knife_project_v2(kcd, kcd->curr.cage, kcd->curr.mval);
|
|
knifetool_update_mval(kcd, kcd->curr.mval);
|
|
|
|
knife_add_cut(kcd);
|
|
|
|
/* KNF_MODAL_NEW_CUT */
|
|
knife_finish_cut(kcd);
|
|
kcd->mode = MODE_IDLE;
|
|
}
|
|
handled = true;
|
|
break;
|
|
case KNF_MODAL_PANNING:
|
|
if (event->val != KM_RELEASE) {
|
|
if (kcd->mode != MODE_PANNING) {
|
|
kcd->prevmode = kcd->mode;
|
|
kcd->mode = MODE_PANNING;
|
|
}
|
|
}
|
|
else {
|
|
kcd->mode = KnifeMode(kcd->prevmode);
|
|
}
|
|
|
|
ED_region_tag_redraw(kcd->region);
|
|
return OPERATOR_PASS_THROUGH;
|
|
}
|
|
}
|
|
else { /* non-modal-mapped events */
|
|
switch (event->type) {
|
|
case MOUSEPAN:
|
|
case MOUSEZOOM:
|
|
case MOUSEROTATE:
|
|
case WHEELUPMOUSE:
|
|
case WHEELDOWNMOUSE:
|
|
case NDOF_MOTION:
|
|
return OPERATOR_PASS_THROUGH;
|
|
case MOUSEMOVE: /* Mouse moved somewhere to select another loop. */
|
|
if (kcd->mode != MODE_PANNING) {
|
|
knifetool_update_mval(kcd, mval);
|
|
do_refresh = true;
|
|
|
|
if (kcd->is_drag_hold) {
|
|
if (kcd->linehits.size() >= 2) {
|
|
knife_add_cut(kcd);
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (kcd->angle_snapping) {
|
|
if (kcd->num.str_cur >= 3 ||
|
|
kcd->angle_snapping_increment > KNIFE_MAX_ANGLE_SNAPPING_INCREMENT / 10)
|
|
{
|
|
knife_reset_snap_angle_input(kcd);
|
|
}
|
|
if (event->type != EVT_MODAL_MAP) {
|
|
/* Modal number-input inactive, try to handle numeric inputs last. */
|
|
if (!handled && event->val == KM_PRESS && handleNumInput(C, &kcd->num, event)) {
|
|
applyNumInput(&kcd->num, &snapping_increment_temp);
|
|
/* Restrict number key input to 0 - 180 degree range. */
|
|
if (snapping_increment_temp > KNIFE_MIN_ANGLE_SNAPPING_INCREMENT &&
|
|
snapping_increment_temp <= KNIFE_MAX_ANGLE_SNAPPING_INCREMENT)
|
|
{
|
|
kcd->angle_snapping_increment = snapping_increment_temp;
|
|
}
|
|
knife_update_active(kcd, mval);
|
|
knife_update_header(C, op, kcd);
|
|
ED_region_tag_redraw(kcd->region);
|
|
return OPERATOR_RUNNING_MODAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Constrain axes with X,Y,Z keys. */
|
|
if (event->type == EVT_MODAL_MAP) {
|
|
if (ELEM(event->val, KNF_MODAL_X_AXIS, KNF_MODAL_Y_AXIS, KNF_MODAL_Z_AXIS)) {
|
|
if (event->val == KNF_MODAL_X_AXIS && kcd->constrain_axis != KNF_CONSTRAIN_AXIS_X) {
|
|
kcd->constrain_axis = KNF_CONSTRAIN_AXIS_X;
|
|
kcd->constrain_axis_mode = KNF_CONSTRAIN_AXIS_MODE_GLOBAL;
|
|
kcd->axis_string[0] = 'X';
|
|
}
|
|
else if (event->val == KNF_MODAL_Y_AXIS && kcd->constrain_axis != KNF_CONSTRAIN_AXIS_Y) {
|
|
kcd->constrain_axis = KNF_CONSTRAIN_AXIS_Y;
|
|
kcd->constrain_axis_mode = KNF_CONSTRAIN_AXIS_MODE_GLOBAL;
|
|
kcd->axis_string[0] = 'Y';
|
|
}
|
|
else if (event->val == KNF_MODAL_Z_AXIS && kcd->constrain_axis != KNF_CONSTRAIN_AXIS_Z) {
|
|
kcd->constrain_axis = KNF_CONSTRAIN_AXIS_Z;
|
|
kcd->constrain_axis_mode = KNF_CONSTRAIN_AXIS_MODE_GLOBAL;
|
|
kcd->axis_string[0] = 'Z';
|
|
}
|
|
else {
|
|
/* Cycle through modes with repeated key presses. */
|
|
if (kcd->constrain_axis_mode != KNF_CONSTRAIN_AXIS_MODE_LOCAL) {
|
|
kcd->constrain_axis_mode++;
|
|
kcd->axis_string[0] += 32; /* Lower case. */
|
|
}
|
|
else {
|
|
kcd->constrain_axis = KNF_CONSTRAIN_AXIS_NONE;
|
|
kcd->constrain_axis_mode = KNF_CONSTRAIN_AXIS_MODE_NONE;
|
|
}
|
|
}
|
|
kcd->axis_constrained = (kcd->constrain_axis != KNF_CONSTRAIN_AXIS_NONE);
|
|
knifetool_disable_angle_snapping(kcd);
|
|
do_refresh = true;
|
|
}
|
|
}
|
|
|
|
if (kcd->mode == MODE_DRAGGING) {
|
|
op->flag &= ~OP_IS_MODAL_CURSOR_REGION;
|
|
}
|
|
else {
|
|
op->flag |= OP_IS_MODAL_CURSOR_REGION;
|
|
}
|
|
|
|
if (do_refresh) {
|
|
ED_region_tag_redraw(kcd->region);
|
|
knife_update_header(C, op, kcd);
|
|
}
|
|
|
|
/* Keep going until the user confirms. */
|
|
return OPERATOR_RUNNING_MODAL;
|
|
}
|
|
|
|
static int knifetool_invoke(bContext *C, wmOperator *op, const wmEvent *event)
|
|
{
|
|
const bool only_select = RNA_boolean_get(op->ptr, "only_selected");
|
|
const bool cut_through = !RNA_boolean_get(op->ptr, "use_occlude_geometry");
|
|
const bool xray = !RNA_boolean_get(op->ptr, "xray");
|
|
const int visible_measurements = RNA_enum_get(op->ptr, "visible_measurements");
|
|
const int angle_snapping = RNA_enum_get(op->ptr, "angle_snapping");
|
|
const bool wait_for_input = RNA_boolean_get(op->ptr, "wait_for_input");
|
|
const float angle_snapping_increment = RAD2DEGF(
|
|
RNA_float_get(op->ptr, "angle_snapping_increment"));
|
|
|
|
ViewContext vc = em_setup_viewcontext(C);
|
|
|
|
/* alloc new customdata */
|
|
KnifeTool_OpData *kcd = MEM_new<KnifeTool_OpData>(__func__);
|
|
op->customdata = kcd;
|
|
knifetool_init(
|
|
&vc,
|
|
kcd,
|
|
BKE_view_layer_array_from_objects_in_edit_mode_unique_data(vc.scene, vc.view_layer, vc.v3d),
|
|
only_select,
|
|
cut_through,
|
|
xray,
|
|
visible_measurements,
|
|
angle_snapping,
|
|
angle_snapping_increment,
|
|
true);
|
|
|
|
if (only_select) {
|
|
bool faces_selected = false;
|
|
for (Object *obedit : kcd->objects) {
|
|
BMEditMesh *em = BKE_editmesh_from_object(obedit);
|
|
if (em->bm->totfacesel != 0) {
|
|
faces_selected = true;
|
|
}
|
|
}
|
|
|
|
if (!faces_selected) {
|
|
BKE_report(op->reports, RPT_ERROR, "Selected faces required");
|
|
knifetool_cancel(C, op);
|
|
return OPERATOR_CANCELLED;
|
|
}
|
|
}
|
|
|
|
op->flag |= OP_IS_MODAL_CURSOR_REGION;
|
|
|
|
/* Add a modal handler for this operator - handles loop selection. */
|
|
WM_cursor_modal_set(CTX_wm_window(C), WM_CURSOR_KNIFE);
|
|
WM_event_add_modal_handler(C, op);
|
|
|
|
if (wait_for_input == false) {
|
|
/* Avoid copy-paste logic. */
|
|
wmEvent event_modal{};
|
|
event_modal.prev_val = KM_NOTHING;
|
|
event_modal.type = EVT_MODAL_MAP;
|
|
event_modal.val = KNF_MODAL_ADD_CUT;
|
|
|
|
copy_v2_v2_int(event_modal.mval, event->mval);
|
|
|
|
int ret = knifetool_modal(C, op, &event_modal);
|
|
BLI_assert(ret == OPERATOR_RUNNING_MODAL);
|
|
UNUSED_VARS_NDEBUG(ret);
|
|
}
|
|
|
|
knife_update_header(C, op, kcd);
|
|
|
|
return OPERATOR_RUNNING_MODAL;
|
|
}
|
|
|
|
void MESH_OT_knife_tool(wmOperatorType *ot)
|
|
{
|
|
/* Description. */
|
|
ot->name = "Knife Topology Tool";
|
|
ot->idname = "MESH_OT_knife_tool";
|
|
ot->description = "Cut new topology";
|
|
|
|
/* Callbacks. */
|
|
ot->invoke = knifetool_invoke;
|
|
ot->modal = knifetool_modal;
|
|
ot->cancel = knifetool_cancel;
|
|
ot->poll = ED_operator_editmesh_view3d;
|
|
|
|
/* Flags. */
|
|
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO | OPTYPE_BLOCKING;
|
|
|
|
/* Properties. */
|
|
PropertyRNA *prop;
|
|
static const EnumPropertyItem visible_measurements_items[] = {
|
|
{KNF_MEASUREMENT_NONE, "NONE", 0, "None", "Show no measurements"},
|
|
{KNF_MEASUREMENT_BOTH, "BOTH", 0, "Both", "Show both distances and angles"},
|
|
{KNF_MEASUREMENT_DISTANCE, "DISTANCE", 0, "Distance", "Show just distance measurements"},
|
|
{KNF_MEASUREMENT_ANGLE, "ANGLE", 0, "Angle", "Show just angle measurements"},
|
|
{0, nullptr, 0, nullptr, nullptr},
|
|
};
|
|
|
|
static const EnumPropertyItem angle_snapping_items[] = {
|
|
{KNF_CONSTRAIN_ANGLE_MODE_NONE, "NONE", 0, "None", "No angle snapping"},
|
|
{KNF_CONSTRAIN_ANGLE_MODE_SCREEN, "SCREEN", 0, "Screen", "Screen space angle snapping"},
|
|
{KNF_CONSTRAIN_ANGLE_MODE_RELATIVE,
|
|
"RELATIVE",
|
|
0,
|
|
"Relative",
|
|
"Angle snapping relative to the previous cut edge"},
|
|
{0, nullptr, 0, nullptr, nullptr},
|
|
};
|
|
|
|
RNA_def_boolean(ot->srna,
|
|
"use_occlude_geometry",
|
|
true,
|
|
"Occlude Geometry",
|
|
"Only cut the front most geometry");
|
|
RNA_def_boolean(ot->srna, "only_selected", false, "Only Selected", "Only cut selected geometry");
|
|
RNA_def_boolean(ot->srna, "xray", true, "X-Ray", "Show cuts hidden by geometry");
|
|
|
|
RNA_def_enum(ot->srna,
|
|
"visible_measurements",
|
|
visible_measurements_items,
|
|
KNF_MEASUREMENT_NONE,
|
|
"Measurements",
|
|
"Visible distance and angle measurements");
|
|
prop = RNA_def_enum(ot->srna,
|
|
"angle_snapping",
|
|
angle_snapping_items,
|
|
KNF_CONSTRAIN_ANGLE_MODE_NONE,
|
|
"Angle Snapping",
|
|
"Angle snapping mode");
|
|
RNA_def_property_translation_context(prop, BLT_I18NCONTEXT_ID_MESH);
|
|
|
|
prop = RNA_def_float(ot->srna,
|
|
"angle_snapping_increment",
|
|
DEG2RADF(KNIFE_DEFAULT_ANGLE_SNAPPING_INCREMENT),
|
|
DEG2RADF(KNIFE_MIN_ANGLE_SNAPPING_INCREMENT),
|
|
DEG2RADF(KNIFE_MAX_ANGLE_SNAPPING_INCREMENT),
|
|
"Angle Snap Increment",
|
|
"The angle snap increment used when in constrained angle mode",
|
|
DEG2RADF(KNIFE_MIN_ANGLE_SNAPPING_INCREMENT),
|
|
DEG2RADF(KNIFE_MAX_ANGLE_SNAPPING_INCREMENT));
|
|
RNA_def_property_subtype(prop, PROP_ANGLE);
|
|
|
|
prop = RNA_def_boolean(ot->srna, "wait_for_input", true, "Wait for Input", "");
|
|
RNA_def_property_flag(prop, PROP_HIDDEN | PROP_SKIP_SAVE);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Knife tool as a utility function
|
|
*
|
|
* Can be used for internal slicing operations.
|
|
* \{ */
|
|
|
|
static bool edbm_mesh_knife_point_isect(LinkNode *polys, const float cent_ss[2])
|
|
{
|
|
LinkNode *p = polys;
|
|
int isect = 0;
|
|
|
|
while (p) {
|
|
const float(*mval_fl)[2] = static_cast<const float(*)[2]>(p->link);
|
|
const int mval_tot = MEM_allocN_len(mval_fl) / sizeof(*mval_fl);
|
|
isect += int(isect_point_poly_v2(cent_ss, mval_fl, mval_tot - 1));
|
|
p = p->next;
|
|
}
|
|
|
|
if (isect % 2) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void EDBM_mesh_knife(
|
|
ViewContext *vc, const Span<Object *> objects, LinkNode *polys, bool use_tag, bool cut_through)
|
|
{
|
|
KnifeTool_OpData *kcd;
|
|
|
|
/* Init. */
|
|
{
|
|
const bool only_select = false;
|
|
const bool is_interactive = false; /* Can enable for testing. */
|
|
const bool xray = false;
|
|
const int visible_measurements = KNF_MEASUREMENT_NONE;
|
|
const int angle_snapping = KNF_CONSTRAIN_ANGLE_MODE_NONE;
|
|
const float angle_snapping_increment = KNIFE_DEFAULT_ANGLE_SNAPPING_INCREMENT;
|
|
|
|
kcd = MEM_new<KnifeTool_OpData>(__func__);
|
|
|
|
knifetool_init(vc,
|
|
kcd,
|
|
{objects},
|
|
only_select,
|
|
cut_through,
|
|
xray,
|
|
visible_measurements,
|
|
angle_snapping,
|
|
angle_snapping_increment,
|
|
is_interactive);
|
|
|
|
kcd->ignore_edge_snapping = true;
|
|
kcd->ignore_vert_snapping = true;
|
|
}
|
|
|
|
/* Execute. */
|
|
{
|
|
LinkNode *p = polys;
|
|
|
|
knife_recalc_ortho(kcd);
|
|
|
|
while (p) {
|
|
const float(*mval_fl)[2] = static_cast<const float(*)[2]>(p->link);
|
|
const int mval_tot = MEM_allocN_len(mval_fl) / sizeof(*mval_fl);
|
|
int i;
|
|
|
|
knife_start_cut(kcd, mval_fl[0]);
|
|
kcd->mode = MODE_DRAGGING;
|
|
|
|
for (i = 1; i < mval_tot; i++) {
|
|
knifetool_update_mval(kcd, mval_fl[i]);
|
|
knife_add_cut(kcd);
|
|
}
|
|
|
|
knife_finish_cut(kcd);
|
|
kcd->mode = MODE_IDLE;
|
|
p = p->next;
|
|
}
|
|
}
|
|
|
|
/* Finish. */
|
|
{
|
|
/* See #knifetool_finish_ex for why multiple passes are needed. */
|
|
for (int ob_index : kcd->objects.index_range()) {
|
|
Object *ob = kcd->objects[ob_index];
|
|
BMEditMesh *em = BKE_editmesh_from_object(ob);
|
|
|
|
if (use_tag) {
|
|
BM_mesh_elem_hflag_enable_all(em->bm, BM_EDGE, BM_ELEM_TAG, false);
|
|
}
|
|
|
|
knifetool_finish_single_pre(kcd, ob_index);
|
|
}
|
|
|
|
for (Object *ob : kcd->objects) {
|
|
BMEditMesh *em = BKE_editmesh_from_object(ob);
|
|
|
|
/* Tag faces inside! */
|
|
if (use_tag) {
|
|
BMesh *bm = em->bm;
|
|
BMEdge *e;
|
|
BMIter iter;
|
|
bool keep_search;
|
|
|
|
/* Use face-loop tag to store if we have intersected. */
|
|
#define F_ISECT_IS_UNKNOWN(f) BM_elem_flag_test(BM_FACE_FIRST_LOOP(f), BM_ELEM_TAG)
|
|
#define F_ISECT_SET_UNKNOWN(f) BM_elem_flag_enable(BM_FACE_FIRST_LOOP(f), BM_ELEM_TAG)
|
|
#define F_ISECT_SET_OUTSIDE(f) BM_elem_flag_disable(BM_FACE_FIRST_LOOP(f), BM_ELEM_TAG)
|
|
{
|
|
BMFace *f;
|
|
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
|
|
F_ISECT_SET_UNKNOWN(f);
|
|
BM_elem_flag_disable(f, BM_ELEM_TAG);
|
|
}
|
|
}
|
|
|
|
/* Tag all faces linked to cut edges. */
|
|
BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) {
|
|
/* Check are we tagged?, then we are an original face. */
|
|
if (BM_elem_flag_test(e, BM_ELEM_TAG)) {
|
|
continue;
|
|
}
|
|
|
|
BMFace *f;
|
|
BMIter fiter;
|
|
BM_ITER_ELEM (f, &fiter, e, BM_FACES_OF_EDGE) {
|
|
float cent[3], cent_ss[2];
|
|
BM_face_calc_point_in_face(f, cent);
|
|
mul_m4_v3(ob->object_to_world().ptr(), cent);
|
|
knife_project_v2(kcd, cent, cent_ss);
|
|
if (edbm_mesh_knife_point_isect(polys, cent_ss)) {
|
|
BM_elem_flag_enable(f, BM_ELEM_TAG);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Expand tags for faces which are not cut, but are inside the polys. */
|
|
do {
|
|
BMFace *f;
|
|
keep_search = false;
|
|
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
|
|
if (BM_elem_flag_test(f, BM_ELEM_TAG) || !F_ISECT_IS_UNKNOWN(f)) {
|
|
continue;
|
|
}
|
|
|
|
/* Am I connected to a tagged face via an un-tagged edge
|
|
* (ie, not across a cut)? */
|
|
BMLoop *l_first = BM_FACE_FIRST_LOOP(f);
|
|
BMLoop *l_iter = l_first;
|
|
bool found = false;
|
|
|
|
do {
|
|
if (BM_elem_flag_test(l_iter->e, BM_ELEM_TAG) != false) {
|
|
/* Now check if the adjacent faces is tagged. */
|
|
BMLoop *l_radial_iter = l_iter->radial_next;
|
|
if (l_radial_iter != l_iter) {
|
|
do {
|
|
if (BM_elem_flag_test(l_radial_iter->f, BM_ELEM_TAG)) {
|
|
found = true;
|
|
}
|
|
} while ((l_radial_iter = l_radial_iter->radial_next) != l_iter &&
|
|
(found == false));
|
|
}
|
|
}
|
|
} while ((l_iter = l_iter->next) != l_first && (found == false));
|
|
|
|
if (found) {
|
|
float cent[3], cent_ss[2];
|
|
BM_face_calc_point_in_face(f, cent);
|
|
mul_m4_v3(ob->object_to_world().ptr(), cent);
|
|
knife_project_v2(kcd, cent, cent_ss);
|
|
if ((kcd->cut_through || point_is_visible(kcd, cent, cent_ss, (BMElem *)f)) &&
|
|
edbm_mesh_knife_point_isect(polys, cent_ss))
|
|
{
|
|
BM_elem_flag_enable(f, BM_ELEM_TAG);
|
|
keep_search = true;
|
|
}
|
|
else {
|
|
/* Don't lose time on this face again, set it as outside. */
|
|
F_ISECT_SET_OUTSIDE(f);
|
|
}
|
|
}
|
|
}
|
|
} while (keep_search);
|
|
|
|
#undef F_ISECT_IS_UNKNOWN
|
|
#undef F_ISECT_SET_UNKNOWN
|
|
#undef F_ISECT_SET_OUTSIDE
|
|
}
|
|
}
|
|
|
|
for (Object *ob : kcd->objects) {
|
|
/* Defer freeing data until the BVH tree is finished with, see: #point_is_visible and
|
|
* the doc-string for #knifetool_finish_single_post. */
|
|
knifetool_finish_single_post(kcd, ob);
|
|
}
|
|
|
|
knifetool_exit_ex(kcd);
|
|
kcd = nullptr;
|
|
}
|
|
}
|
|
|
|
/** \} */
|