c2fa36999f
This patch exposes functionality for performing partial mesh updates for normal calculation and face tessellation while transforming a mesh. The partial update data only needs to be generated once, afterwards the cached connectivity information can be reused (with the exception of changing proportional editing radius). Currently this is only used for transform, in the future it could be used for other operators as well as the transform panel. The best-case overall speedup while transforming geometry is about 1.45x since the time to update a small number of normals and faces is negligible. For an additional speedup partial face tessellation is multi-threaded, this gives ~15x speedup on my system (timing tessellation alone). Exact results depend on the number of CPU cores available. Ref D11494 Reviewed By: mano-wii
117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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/** \file
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* \ingroup bke
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*
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* The \link edmesh EDBM module\endlink is for editmode bmesh stuff.
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* In contrast, this module is for code shared with blenkernel that's
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* only concerned with low level operations on the #BMEditMesh structure.
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*/
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#include "BKE_customdata.h"
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#include "bmesh.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct BMLoop;
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struct BMesh;
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struct BMPartialUpdate;
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struct BoundBox;
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struct Depsgraph;
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struct Mesh;
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struct Object;
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struct Scene;
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/**
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* This structure is used for mesh edit-mode.
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*
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* through this, you get access to both the edit #BMesh,
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* its tessellation, and various stuff that doesn't belong in the BMesh
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* struct itself.
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*
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* the entire derivedmesh and modifier system works with this structure,
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* and not BMesh. Mesh->edit_bmesh stores a pointer to this structure. */
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typedef struct BMEditMesh {
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struct BMesh *bm;
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/*this is for undoing failed operations*/
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struct BMEditMesh *emcopy;
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int emcopyusers;
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/* we store tessellations as triplets of three loops,
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* which each define a triangle.*/
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struct BMLoop *(*looptris)[3];
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int tottri;
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struct Mesh *mesh_eval_final, *mesh_eval_cage;
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/** Cached cage bounding box for selection. */
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struct BoundBox *bb_cage;
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/*derivedmesh stuff*/
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CustomData_MeshMasks lastDataMask;
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/*selection mode*/
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short selectmode;
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short mat_nr;
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/*temp variables for x-mirror editing*/
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int mirror_cdlayer; /* -1 is invalid */
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/**
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* ID data is older than edit-mode data.
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* Set #Main.is_memfile_undo_flush_needed when enabling.
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*/
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char needs_flush_to_id;
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} BMEditMesh;
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/* editmesh.c */
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void BKE_editmesh_looptri_calc(BMEditMesh *em);
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void BKE_editmesh_looptri_calc_with_partial(BMEditMesh *em, struct BMPartialUpdate *bmpinfo);
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BMEditMesh *BKE_editmesh_create(BMesh *bm, const bool do_tessellate);
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BMEditMesh *BKE_editmesh_copy(BMEditMesh *em);
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BMEditMesh *BKE_editmesh_from_object(struct Object *ob);
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void BKE_editmesh_free_derivedmesh(BMEditMesh *em);
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void BKE_editmesh_free(BMEditMesh *em);
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float (*BKE_editmesh_vert_coords_alloc(struct Depsgraph *depsgraph,
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struct BMEditMesh *em,
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struct Scene *scene,
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struct Object *ob,
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int *r_vert_len))[3];
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float (*BKE_editmesh_vert_coords_alloc_orco(BMEditMesh *em, int *r_vert_len))[3];
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const float (*BKE_editmesh_vert_coords_when_deformed(struct Depsgraph *depsgraph,
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struct BMEditMesh *em,
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struct Scene *scene,
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struct Object *obedit,
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int *r_vert_len,
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bool *r_is_alloc))[3];
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void BKE_editmesh_lnorspace_update(BMEditMesh *em, struct Mesh *me);
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void BKE_editmesh_ensure_autosmooth(BMEditMesh *em, struct Mesh *me);
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struct BoundBox *BKE_editmesh_cage_boundbox_get(BMEditMesh *em);
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#ifdef __cplusplus
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}
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#endif
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