e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
/* SPDX-FileCopyrightText: 2023 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 bmesh
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*
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* Wrapper around #BM_mesh_bisect_plane
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*/
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#include "MEM_guardedalloc.h"
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#include "BLI_math_geom.h"
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#include "BLI_math_vector.h"
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#include "BLI_utildefines.h"
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#include "BLI_utildefines_stack.h"
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#include "bmesh.h"
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#include "bmesh_tools.h"
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#include "intern/bmesh_operators_private.h" /* own include */
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#define ELE_NEW 1
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#define ELE_CUT 2
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#define ELE_INPUT 4
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void bmo_bisect_plane_exec(BMesh *bm, BMOperator *op)
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{
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const float dist = BMO_slot_float_get(op->slots_in, "dist");
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const bool use_snap_center = BMO_slot_bool_get(op->slots_in, "use_snap_center");
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const bool clear_outer = BMO_slot_bool_get(op->slots_in, "clear_outer");
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const bool clear_inner = BMO_slot_bool_get(op->slots_in, "clear_inner");
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float plane_co[3];
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float plane_no[3];
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float plane[4];
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BMO_slot_vec_get(op->slots_in, "plane_co", plane_co);
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BMO_slot_vec_get(op->slots_in, "plane_no", plane_no);
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if (is_zero_v3(plane_no)) {
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BMO_error_raise(bm, op, BMO_ERROR_CANCEL, "Zero normal given");
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return;
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}
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plane_from_point_normal_v3(plane, plane_co, plane_no);
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/* tag geometry to bisect */
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BM_mesh_elem_hflag_disable_all(bm, BM_EDGE | BM_FACE, BM_ELEM_TAG, false);
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BMO_slot_buffer_hflag_enable(bm, op->slots_in, "geom", BM_EDGE | BM_FACE, BM_ELEM_TAG, false);
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BMO_slot_buffer_flag_enable(bm, op->slots_in, "geom", BM_ALL_NOLOOP, ELE_INPUT);
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BM_mesh_bisect_plane(bm, plane, use_snap_center, true, ELE_CUT, ELE_NEW, dist);
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if (clear_outer || clear_inner) {
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/* Use an array of vertices because 'geom' contains both verts and edges that may use them.
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* Removing a vert may remove and edge which is later checked by #BMO_ITER.
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* over-allocate the total possible vert count. */
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const int vert_arr_max = min_ii(bm->totvert, BMO_slot_buffer_len(op->slots_in, "geom"));
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BMVert **vert_arr = static_cast<BMVert **>(
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MEM_mallocN(sizeof(*vert_arr) * size_t(vert_arr_max), __func__));
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BMOIter siter;
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BMVert *v;
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float plane_inner[4];
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float plane_outer[4];
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STACK_DECLARE(vert_arr);
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copy_v3_v3(plane_outer, plane);
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copy_v3_v3(plane_inner, plane);
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plane_outer[3] = plane[3] - dist;
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plane_inner[3] = plane[3] + dist;
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STACK_INIT(vert_arr, vert_arr_max);
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BMO_ITER (v, &siter, op->slots_in, "geom", BM_VERT) {
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if ((clear_outer && plane_point_side_v3(plane_outer, v->co) > 0.0f) ||
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(clear_inner && plane_point_side_v3(plane_inner, v->co) < 0.0f))
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{
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STACK_PUSH(vert_arr, v);
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}
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}
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while ((v = STACK_POP(vert_arr))) {
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BM_vert_kill(bm, v);
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}
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MEM_freeN(vert_arr);
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}
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BMO_slot_buffer_from_enabled_flag(
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bm, op, op->slots_out, "geom.out", BM_ALL_NOLOOP, ELE_NEW | ELE_INPUT);
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BMO_slot_buffer_from_enabled_flag(
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bm, op, op->slots_out, "geom_cut.out", BM_VERT | BM_EDGE, ELE_CUT);
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}
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