Sergey Sharybin
0f89bcdbeb
The evaluated mesh is a result of evaluated modifiers, and referencing other evaluated IDs such as materials. It can not be stored in the EditMesh structure which is intended to be re-used by many areas. Such sharing was causing ownership errors causing bugs like T93855: Cycles crash with edit mode and simultaneous viewport and final render The proposed solution is to store the evaluated edit mesh and its cage in the object's runtime field. The motivation goes as following: - It allows to avoid ownership problems like the ones in the linked report. - Object level is chosen over mesh level is because the evaluated mesh is affected by modifiers, which are on the object level. This patch allows to have modifier stack of an object which shares mesh with an object which is in edit mode to be properly taken into account (before the change the modifier stack from the active object will be used for all objects which share the mesh). There is a change in the way how copy-on-write is handled in the edit mode to allow proper state update when changing active scene (or having two windows with different scenes). Previously, the copt-on-write would have been ignored by skipping tagging CoW component. Now it is ignored from within the CoW operation callback. This allows to update edit pointers for objects which are not from the current depsgraph and where the edit_mesh was never assigned in the case when the depsgraph was evaluated prior the active depsgraph. There is no user level changes changes expected with the CoW handling changes: should not affect on neither performance, nor memory consumption. Tested scenarios: - Various modifiers configurations of objects sharing mesh and be part of the same scene. - Steps from the reports: T93855, T82952, T77359 This also fixes T76609, T72733 and perhaps other reports. Differential Revision: https://developer.blender.org/D13824
1067 lines
45 KiB
C++
1067 lines
45 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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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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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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#include "BKE_mesh_types.h"
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#include "BLI_compiler_attrs.h"
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#include "BLI_utildefines.h"
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struct BLI_Stack;
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struct BMesh;
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struct BMeshCreateParams;
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struct BMeshFromMeshParams;
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struct BMeshToMeshParams;
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struct BoundBox;
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struct CustomData;
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struct CustomData_MeshMasks;
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struct Depsgraph;
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struct EdgeHash;
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struct ID;
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struct KeyBlock;
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struct LinkNode;
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struct ListBase;
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struct MDeformVert;
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struct MDisps;
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struct MEdge;
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struct MFace;
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struct MLoop;
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struct MLoopTri;
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struct MLoopUV;
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struct MPoly;
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struct MVert;
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struct Main;
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struct MemArena;
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struct Mesh;
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struct ModifierData;
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struct Object;
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struct PointCloud;
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struct Scene;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* setting zero so we can catch bugs in OpenMP/BMesh */
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#ifdef DEBUG
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# define BKE_MESH_OMP_LIMIT 0
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#else
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# define BKE_MESH_OMP_LIMIT 10000
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#endif
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/* *** mesh.c *** */
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struct BMesh *BKE_mesh_to_bmesh_ex(const struct Mesh *me,
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const struct BMeshCreateParams *create_params,
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const struct BMeshFromMeshParams *convert_params);
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struct BMesh *BKE_mesh_to_bmesh(struct Mesh *me,
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struct Object *ob,
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bool add_key_index,
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const struct BMeshCreateParams *params);
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struct Mesh *BKE_mesh_from_bmesh_nomain(struct BMesh *bm,
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const struct BMeshToMeshParams *params,
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const struct Mesh *me_settings);
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struct Mesh *BKE_mesh_from_bmesh_for_eval_nomain(struct BMesh *bm,
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const struct CustomData_MeshMasks *cd_mask_extra,
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const struct Mesh *me_settings);
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/**
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* Find the index of the loop in 'poly' which references vertex,
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* returns -1 if not found
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*/
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int poly_find_loop_from_vert(const struct MPoly *poly, const struct MLoop *loopstart, uint vert);
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/**
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* Fill \a r_adj with the loop indices in \a poly adjacent to the
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* vertex. Returns the index of the loop matching vertex, or -1 if the
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* vertex is not in \a poly
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*/
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int poly_get_adj_loops_from_vert(const struct MPoly *poly,
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const struct MLoop *mloop,
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unsigned int vert,
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unsigned int r_adj[2]);
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/**
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* Return the index of the edge vert that is not equal to \a v. If
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* neither edge vertex is equal to \a v, returns -1.
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*/
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int BKE_mesh_edge_other_vert(const struct MEdge *e, int v);
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/**
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* Sets each output array element to the edge index if it is a real edge, or -1.
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*/
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void BKE_mesh_looptri_get_real_edges(const struct Mesh *mesh,
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const struct MLoopTri *looptri,
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int r_edges[3]);
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/**
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* Free (or release) any data used by this mesh (does not free the mesh itself).
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* Only use for undo, in most cases `BKE_id_free(nullptr, me)` should be used.
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*/
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void BKE_mesh_free_data_for_undo(struct Mesh *me);
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void BKE_mesh_clear_geometry(struct Mesh *me);
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struct Mesh *BKE_mesh_add(struct Main *bmain, const char *name);
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void BKE_mesh_free_editmesh(struct Mesh *mesh);
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/**
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* A version of #BKE_mesh_copy_parameters that is intended for evaluated output
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* (the modifier stack for example).
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*
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* \warning User counts are not handled for ID's.
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*/
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void BKE_mesh_copy_parameters_for_eval(struct Mesh *me_dst, const struct Mesh *me_src);
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/**
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* Copy user editable settings that we want to preserve
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* when a new mesh is based on an existing mesh.
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*/
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void BKE_mesh_copy_parameters(struct Mesh *me_dst, const struct Mesh *me_src);
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void BKE_mesh_update_customdata_pointers(struct Mesh *me, bool do_ensure_tess_cd);
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void BKE_mesh_ensure_skin_customdata(struct Mesh *me);
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struct Mesh *BKE_mesh_new_nomain(
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int verts_len, int edges_len, int tessface_len, int loops_len, int polys_len);
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struct Mesh *BKE_mesh_new_nomain_from_template(const struct Mesh *me_src,
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int verts_len,
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int edges_len,
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int tessface_len,
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int loops_len,
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int polys_len);
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struct Mesh *BKE_mesh_new_nomain_from_template_ex(const struct Mesh *me_src,
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int verts_len,
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int edges_len,
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int tessface_len,
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int loops_len,
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int polys_len,
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struct CustomData_MeshMasks mask);
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void BKE_mesh_eval_delete(struct Mesh *mesh_eval);
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/**
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* Performs copy for use during evaluation,
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* optional referencing original arrays to reduce memory.
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*/
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struct Mesh *BKE_mesh_copy_for_eval(const struct Mesh *source, bool reference);
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/**
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* These functions construct a new Mesh,
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* contrary to #BKE_mesh_to_curve_nurblist which modifies ob itself.
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*/
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struct Mesh *BKE_mesh_new_nomain_from_curve(const struct Object *ob);
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struct Mesh *BKE_mesh_new_nomain_from_curve_displist(const struct Object *ob,
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const struct ListBase *dispbase);
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bool BKE_mesh_ensure_facemap_customdata(struct Mesh *me);
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bool BKE_mesh_clear_facemap_customdata(struct Mesh *me);
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float (*BKE_mesh_orco_verts_get(struct Object *ob))[3];
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void BKE_mesh_orco_verts_transform(struct Mesh *me, float (*orco)[3], int totvert, int invert);
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/**
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* Add a #CD_ORCO layer to the Mesh if there is none already.
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*/
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void BKE_mesh_orco_ensure(struct Object *ob, struct Mesh *mesh);
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/**
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* Rotates the vertices of a face in case v[2] or v[3] (vertex index) is = 0.
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* this is necessary to make the if #MFace.v4 check for quads work.
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*/
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int BKE_mesh_mface_index_validate(struct MFace *mface,
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struct CustomData *mfdata,
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int mfindex,
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int nr);
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struct Mesh *BKE_mesh_from_object(struct Object *ob);
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void BKE_mesh_assign_object(struct Main *bmain, struct Object *ob, struct Mesh *me);
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void BKE_mesh_from_metaball(struct ListBase *lb, struct Mesh *me);
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void BKE_mesh_to_curve_nurblist(const struct Mesh *me,
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struct ListBase *nurblist,
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int edge_users_test);
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void BKE_mesh_to_curve(struct Main *bmain,
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struct Depsgraph *depsgraph,
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struct Scene *scene,
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struct Object *ob);
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void BKE_pointcloud_from_mesh(struct Mesh *me, struct PointCloud *pointcloud);
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void BKE_mesh_to_pointcloud(struct Main *bmain,
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struct Depsgraph *depsgraph,
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struct Scene *scene,
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struct Object *ob);
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void BKE_mesh_from_pointcloud(const struct PointCloud *pointcloud, struct Mesh *me);
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void BKE_pointcloud_to_mesh(struct Main *bmain,
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struct Depsgraph *depsgraph,
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struct Scene *scene,
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struct Object *ob);
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void BKE_mesh_material_index_remove(struct Mesh *me, short index);
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bool BKE_mesh_material_index_used(struct Mesh *me, short index);
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void BKE_mesh_material_index_clear(struct Mesh *me);
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void BKE_mesh_material_remap(struct Mesh *me, const unsigned int *remap, unsigned int remap_len);
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void BKE_mesh_smooth_flag_set(struct Mesh *me, bool use_smooth);
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/**
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* Needed after converting a mesh with subsurf optimal display to mesh.
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*/
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void BKE_mesh_edges_set_draw_render(struct Mesh *me);
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/**
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* Used for unit testing; compares two meshes, checking only
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* differences we care about. should be usable with leaf's
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* testing framework I get RNA work done, will use hackish
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* testing code for now.
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*/
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const char *BKE_mesh_cmp(struct Mesh *me1, struct Mesh *me2, float thresh);
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struct BoundBox *BKE_mesh_boundbox_get(struct Object *ob);
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void BKE_mesh_texspace_calc(struct Mesh *me);
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void BKE_mesh_texspace_ensure(struct Mesh *me);
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void BKE_mesh_texspace_get(struct Mesh *me, float r_loc[3], float r_size[3]);
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void BKE_mesh_texspace_get_reference(struct Mesh *me,
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char **r_texflag,
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float **r_loc,
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float **r_size);
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void BKE_mesh_texspace_copy_from_object(struct Mesh *me, struct Object *ob);
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/**
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* Split faces based on the edge angle and loop normals.
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* Matches behavior of face splitting in render engines.
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*
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* \note Will leave #CD_NORMAL loop data layer which is used by render engines to set shading up.
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*/
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void BKE_mesh_split_faces(struct Mesh *mesh, bool free_loop_normals);
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/**
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* Create new mesh from the given object at its current state.
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* The owner of this mesh is unknown, it is up to the caller to decide.
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*
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* If preserve_all_data_layers is truth then the modifier stack is re-evaluated to ensure it
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* preserves all possible custom data layers.
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*
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* \note Dependency graph argument is required when preserve_all_data_layers is truth, and is
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* ignored otherwise.
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*/
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struct Mesh *BKE_mesh_new_from_object(struct Depsgraph *depsgraph,
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struct Object *object,
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bool preserve_all_data_layers,
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bool preserve_origindex);
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/**
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* This is a version of BKE_mesh_new_from_object() which stores mesh in the given main database.
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* However, that function enforces object type to be a geometry one, and ensures a mesh is always
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* generated, be it empty.
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*/
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struct Mesh *BKE_mesh_new_from_object_to_bmain(struct Main *bmain,
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struct Depsgraph *depsgraph,
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struct Object *object,
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bool preserve_all_data_layers);
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/**
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* \param use_virtual_modifiers: When enabled calculate virtual-modifiers before applying `md_eval`
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* support this since virtual-modifiers are not modifiers from a user perspective,
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* allowing shape keys to be included with the modifier being applied, see: T91923.
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*/
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struct Mesh *BKE_mesh_create_derived_for_modifier(struct Depsgraph *depsgraph,
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struct Scene *scene,
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struct Object *ob_eval,
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struct ModifierData *md_eval,
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bool use_virtual_modifiers,
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bool build_shapekey_layers);
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/**
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* Copies a nomain-Mesh into an existing Mesh.
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*/
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void BKE_mesh_nomain_to_mesh(struct Mesh *mesh_src,
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struct Mesh *mesh_dst,
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struct Object *ob,
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const struct CustomData_MeshMasks *mask,
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bool take_ownership);
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void BKE_mesh_nomain_to_meshkey(struct Mesh *mesh_src, struct Mesh *mesh_dst, struct KeyBlock *kb);
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/* vertex level transformations & checks (no derived mesh) */
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/* basic vertex data functions */
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bool BKE_mesh_minmax(const struct Mesh *me, float r_min[3], float r_max[3]);
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void BKE_mesh_transform(struct Mesh *me, const float mat[4][4], bool do_keys);
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void BKE_mesh_translate(struct Mesh *me, const float offset[3], bool do_keys);
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void BKE_mesh_tessface_ensure(struct Mesh *mesh);
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void BKE_mesh_tessface_clear(struct Mesh *mesh);
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void BKE_mesh_do_versions_cd_flag_init(struct Mesh *mesh);
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void BKE_mesh_mselect_clear(struct Mesh *me);
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void BKE_mesh_mselect_validate(struct Mesh *me);
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/**
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* \return the index within `me->mselect`, or -1
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*/
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int BKE_mesh_mselect_find(struct Mesh *me, int index, int type);
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/**
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* \return The index of the active element.
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*/
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int BKE_mesh_mselect_active_get(struct Mesh *me, int type);
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void BKE_mesh_mselect_active_set(struct Mesh *me, int index, int type);
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void BKE_mesh_count_selected_items(const struct Mesh *mesh, int r_count[3]);
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float (*BKE_mesh_vert_coords_alloc(const struct Mesh *mesh, int *r_vert_len))[3];
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void BKE_mesh_vert_coords_get(const struct Mesh *mesh, float (*vert_coords)[3]);
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void BKE_mesh_vert_coords_apply_with_mat4(struct Mesh *mesh,
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const float (*vert_coords)[3],
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const float mat[4][4]);
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void BKE_mesh_vert_coords_apply(struct Mesh *mesh, const float (*vert_coords)[3]);
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/* *** mesh_tessellate.c *** */
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/**
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* Recreate #MFace Tessellation.
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*
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* \param do_face_nor_copy: Controls whether the normals from the poly
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* are copied to the tessellated faces.
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*
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* \return number of tessellation faces.
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*
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* \note This doesn't use multi-threading like #BKE_mesh_recalc_looptri since
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* it's not used in many places and #MFace should be phased out.
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*/
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int BKE_mesh_tessface_calc_ex(struct CustomData *fdata,
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struct CustomData *ldata,
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struct CustomData *pdata,
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struct MVert *mvert,
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int totface,
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int totloop,
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int totpoly,
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bool do_face_nor_copy);
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void BKE_mesh_tessface_calc(struct Mesh *mesh);
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/**
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* Calculate tessellation into #MLoopTri which exist only for this purpose.
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*/
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void BKE_mesh_recalc_looptri(const struct MLoop *mloop,
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const struct MPoly *mpoly,
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const struct MVert *mvert,
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int totloop,
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int totpoly,
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struct MLoopTri *mlooptri);
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/**
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* A version of #BKE_mesh_recalc_looptri which takes pre-calculated polygon normals
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* (used to avoid having to calculate the face normal for NGON tessellation).
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*
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* \note Only use this function if normals have already been calculated, there is no need
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* to calculate normals just to use this function as it will cause the normals for triangles
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* to be calculated which aren't needed for tessellation.
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*/
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void BKE_mesh_recalc_looptri_with_normals(const struct MLoop *mloop,
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const struct MPoly *mpoly,
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const struct MVert *mvert,
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int totloop,
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int totpoly,
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struct MLoopTri *mlooptri,
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const float (*poly_normals)[3]);
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/* *** mesh_normals.cc *** */
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/**
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* Returns the normals for each vertex, which is defined as the weighted average of the normals
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* from a vertices surrounding faces, or the normalized position of vertices connected to no faces.
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* \warning May still return null if the mesh is empty.
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*/
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const float (*BKE_mesh_vertex_normals_ensure(const struct Mesh *mesh))[3];
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/**
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* Return the normal direction of every polygon, which is defined by the winding direction of its
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* corners.
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* \warning May still return null if the mesh is empty or has no polygons.
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*/
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const float (*BKE_mesh_poly_normals_ensure(const struct Mesh *mesh))[3];
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/**
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* Tag mesh vertex and face normals to be recalculated when/if they are needed later.
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*
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* \note Dirty tagged normals are the default state of a new mesh, so tagging them
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* dirty explicitly is not always necessary if the mesh is created locally.
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*/
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void BKE_mesh_normals_tag_dirty(struct Mesh *mesh);
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/**
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* Check that a mesh with non-dirty normals has vertex and face custom data layers.
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* If these asserts fail, it means some area cleared the dirty flag but didn't copy or add the
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* normal layers, or removed normals but didn't set the dirty flag.
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*/
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void BKE_mesh_assert_normals_dirty_or_calculated(const struct Mesh *mesh);
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/**
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* Retrieve write access to the vertex normal layer, ensuring that it exists and that it is not
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* shared. The provided vertex normals should be the same as if they were calculated automatically.
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*
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* \note In order to clear the dirty flag, this function should be followed by a call to
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* #BKE_mesh_vertex_normals_clear_dirty. This is separate so that normals are still tagged dirty
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* while they are being assigned.
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*/
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float (*BKE_mesh_vertex_normals_for_write(struct Mesh *mesh))[3];
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/**
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* Retrieve write access to the poly normal layer, ensuring that it exists and that it is not
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* shared. The provided poly normals should be the same as if they were calculated automatically.
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*
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* \note In order to clear the dirty flag, this function should be followed by a call to
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* #BKE_mesh_poly_normals_clear_dirty. This is separate so that normals are still tagged dirty
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* while they are being assigned.
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*/
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float (*BKE_mesh_poly_normals_for_write(struct Mesh *mesh))[3];
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/**
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* Mark the mesh's vertex normals non-dirty, for when they are calculated or assigned manually.
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*/
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void BKE_mesh_vertex_normals_clear_dirty(struct Mesh *mesh);
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/**
|
|
* Mark the mesh's poly normals non-dirty, for when they are calculated or assigned manually.
|
|
*/
|
|
void BKE_mesh_poly_normals_clear_dirty(struct Mesh *mesh);
|
|
|
|
/**
|
|
* Return true if the mesh vertex normals either are not stored or are dirty.
|
|
* This can be used to help decide whether to transfer them when copying a mesh.
|
|
*/
|
|
bool BKE_mesh_vertex_normals_are_dirty(const struct Mesh *mesh);
|
|
|
|
/**
|
|
* Return true if the mesh polygon normals either are not stored or are dirty.
|
|
* This can be used to help decide whether to transfer them when copying a mesh.
|
|
*/
|
|
bool BKE_mesh_poly_normals_are_dirty(const struct Mesh *mesh);
|
|
|
|
/**
|
|
* Calculate face normals directly into a result array.
|
|
*
|
|
* \note Usually #BKE_mesh_poly_normals_ensure is the preferred way to access face normals,
|
|
* since they may already be calculated and cached on the mesh.
|
|
*/
|
|
void BKE_mesh_calc_normals_poly(const struct MVert *mvert,
|
|
int mvert_len,
|
|
const struct MLoop *mloop,
|
|
int mloop_len,
|
|
const struct MPoly *mpoly,
|
|
int mpoly_len,
|
|
float (*r_poly_normals)[3]);
|
|
|
|
/**
|
|
* Calculate vertex and face normals, storing the result in custom data layers on the mesh.
|
|
*
|
|
* \note It is usually preferable to calculate normals lazily with
|
|
* #BKE_mesh_vertex_normals_ensure, but some areas (perhaps unnecessarily)
|
|
* can also calculate them eagerly.
|
|
*/
|
|
void BKE_mesh_calc_normals(struct Mesh *me);
|
|
|
|
/**
|
|
* Called after calculating all modifiers.
|
|
*/
|
|
void BKE_mesh_ensure_normals_for_display(struct Mesh *mesh);
|
|
void BKE_mesh_calc_normals_looptri(struct MVert *mverts,
|
|
int numVerts,
|
|
const struct MLoop *mloop,
|
|
const struct MLoopTri *looptri,
|
|
int looptri_num,
|
|
float (*r_tri_nors)[3]);
|
|
void BKE_mesh_loop_manifold_fan_around_vert_next(const struct MLoop *mloops,
|
|
const struct MPoly *mpolys,
|
|
const int *loop_to_poly,
|
|
const int *e2lfan_curr,
|
|
uint mv_pivot_index,
|
|
const struct MLoop **r_mlfan_curr,
|
|
int *r_mlfan_curr_index,
|
|
int *r_mlfan_vert_index,
|
|
int *r_mpfan_curr_index);
|
|
|
|
/**
|
|
* Define sharp edges as needed to mimic 'autosmooth' from angle threshold.
|
|
*
|
|
* Used when defining an empty custom loop normals data layer,
|
|
* to keep same shading as with auto-smooth!
|
|
*/
|
|
void BKE_edges_sharp_from_angle_set(const struct MVert *mverts,
|
|
int numVerts,
|
|
struct MEdge *medges,
|
|
int numEdges,
|
|
struct MLoop *mloops,
|
|
int numLoops,
|
|
struct MPoly *mpolys,
|
|
const float (*polynors)[3],
|
|
int numPolys,
|
|
float split_angle);
|
|
|
|
/**
|
|
* References a contiguous loop-fan with normal offset vars.
|
|
*/
|
|
typedef struct MLoopNorSpace {
|
|
/** Automatically computed loop normal. */
|
|
float vec_lnor[3];
|
|
/** Reference vector, orthogonal to vec_lnor. */
|
|
float vec_ref[3];
|
|
/** Third vector, orthogonal to vec_lnor and vec_ref. */
|
|
float vec_ortho[3];
|
|
/** Reference angle, around vec_ortho, in ]0, pi] range (0.0 marks that space as invalid). */
|
|
float ref_alpha;
|
|
/** Reference angle, around vec_lnor, in ]0, 2pi] range (0.0 marks that space as invalid). */
|
|
float ref_beta;
|
|
/** All loops using this lnor space (i.e. smooth fan of loops),
|
|
* as (depending on owning MLoopNorSpaceArrary.data_type):
|
|
* - Indices (uint_in_ptr), or
|
|
* - BMLoop pointers. */
|
|
struct LinkNode *loops;
|
|
char flags;
|
|
|
|
/** To be used for extended processing related to loop normal spaces (aka smooth fans). */
|
|
void *user_data;
|
|
} MLoopNorSpace;
|
|
/**
|
|
* MLoopNorSpace.flags
|
|
*/
|
|
enum {
|
|
MLNOR_SPACE_IS_SINGLE = 1 << 0,
|
|
};
|
|
|
|
/**
|
|
* Collection of #MLoopNorSpace basic storage & pre-allocation.
|
|
*/
|
|
typedef struct MLoopNorSpaceArray {
|
|
MLoopNorSpace **lspacearr; /* MLoop aligned array */
|
|
struct LinkNode
|
|
*loops_pool; /* Allocated once, avoids to call BLI_linklist_prepend_arena() for each loop! */
|
|
char data_type; /* Whether we store loop indices, or pointers to BMLoop. */
|
|
int num_spaces; /* Number of clnors spaces defined in this array. */
|
|
struct MemArena *mem;
|
|
} MLoopNorSpaceArray;
|
|
/**
|
|
* MLoopNorSpaceArray.data_type
|
|
*/
|
|
enum {
|
|
MLNOR_SPACEARR_LOOP_INDEX = 0,
|
|
MLNOR_SPACEARR_BMLOOP_PTR = 1,
|
|
};
|
|
|
|
/* Low-level custom normals functions. */
|
|
void BKE_lnor_spacearr_init(MLoopNorSpaceArray *lnors_spacearr, int numLoops, char data_type);
|
|
void BKE_lnor_spacearr_clear(MLoopNorSpaceArray *lnors_spacearr);
|
|
void BKE_lnor_spacearr_free(MLoopNorSpaceArray *lnors_spacearr);
|
|
|
|
/**
|
|
* Utility for multi-threaded calculation that ensures
|
|
* `lnors_spacearr_tls` doesn't share memory with `lnors_spacearr`
|
|
* that would cause it not to be thread safe.
|
|
*
|
|
* \note This works as long as threads never operate on the same loops at once.
|
|
*/
|
|
void BKE_lnor_spacearr_tls_init(MLoopNorSpaceArray *lnors_spacearr,
|
|
MLoopNorSpaceArray *lnors_spacearr_tls);
|
|
/**
|
|
* Utility for multi-threaded calculation
|
|
* that merges `lnors_spacearr_tls` into `lnors_spacearr`.
|
|
*/
|
|
void BKE_lnor_spacearr_tls_join(MLoopNorSpaceArray *lnors_spacearr,
|
|
MLoopNorSpaceArray *lnors_spacearr_tls);
|
|
|
|
MLoopNorSpace *BKE_lnor_space_create(MLoopNorSpaceArray *lnors_spacearr);
|
|
/**
|
|
* Should only be called once.
|
|
* Beware, this modifies ref_vec and other_vec in place!
|
|
* In case no valid space can be generated, ref_alpha and ref_beta are set to zero
|
|
* (which means 'use auto lnors').
|
|
*/
|
|
void BKE_lnor_space_define(MLoopNorSpace *lnor_space,
|
|
const float lnor[3],
|
|
float vec_ref[3],
|
|
float vec_other[3],
|
|
struct BLI_Stack *edge_vectors);
|
|
/**
|
|
* Add a new given loop to given lnor_space.
|
|
* Depending on \a lnor_space->data_type, we expect \a bm_loop to be a pointer to BMLoop struct
|
|
* (in case of BMLOOP_PTR), or nullptr (in case of LOOP_INDEX), loop index is then stored in
|
|
* pointer. If \a is_single is set, the BMLoop or loop index is directly stored in \a
|
|
* lnor_space->loops pointer (since there is only one loop in this fan), else it is added to the
|
|
* linked list of loops in the fan.
|
|
*/
|
|
void BKE_lnor_space_add_loop(MLoopNorSpaceArray *lnors_spacearr,
|
|
MLoopNorSpace *lnor_space,
|
|
int ml_index,
|
|
void *bm_loop,
|
|
bool is_single);
|
|
void BKE_lnor_space_custom_data_to_normal(MLoopNorSpace *lnor_space,
|
|
const short clnor_data[2],
|
|
float r_custom_lnor[3]);
|
|
void BKE_lnor_space_custom_normal_to_data(MLoopNorSpace *lnor_space,
|
|
const float custom_lnor[3],
|
|
short r_clnor_data[2]);
|
|
|
|
/* Medium-level custom normals functions. */
|
|
|
|
/**
|
|
* Compute split normals, i.e. vertex normals associated with each poly (hence 'loop normals').
|
|
* Useful to materialize sharp edges (or non-smooth faces) without actually modifying the geometry
|
|
* (splitting edges).
|
|
*/
|
|
void BKE_mesh_normals_loop_split(const struct MVert *mverts,
|
|
const float (*vert_normals)[3],
|
|
int numVerts,
|
|
struct MEdge *medges,
|
|
int numEdges,
|
|
struct MLoop *mloops,
|
|
float (*r_loopnors)[3],
|
|
int numLoops,
|
|
struct MPoly *mpolys,
|
|
const float (*polynors)[3],
|
|
int numPolys,
|
|
bool use_split_normals,
|
|
float split_angle,
|
|
MLoopNorSpaceArray *r_lnors_spacearr,
|
|
short (*clnors_data)[2],
|
|
int *r_loop_to_poly);
|
|
|
|
void BKE_mesh_normals_loop_custom_set(const struct MVert *mverts,
|
|
const float (*vert_normals)[3],
|
|
int numVerts,
|
|
struct MEdge *medges,
|
|
int numEdges,
|
|
struct MLoop *mloops,
|
|
float (*r_custom_loopnors)[3],
|
|
int numLoops,
|
|
struct MPoly *mpolys,
|
|
const float (*polynors)[3],
|
|
int numPolys,
|
|
short (*r_clnors_data)[2]);
|
|
void BKE_mesh_normals_loop_custom_from_vertices_set(const struct MVert *mverts,
|
|
const float (*vert_normals)[3],
|
|
float (*r_custom_vertnors)[3],
|
|
int numVerts,
|
|
struct MEdge *medges,
|
|
int numEdges,
|
|
struct MLoop *mloops,
|
|
int numLoops,
|
|
struct MPoly *mpolys,
|
|
const float (*polynors)[3],
|
|
int numPolys,
|
|
short (*r_clnors_data)[2]);
|
|
|
|
/**
|
|
* Computes average per-vertex normals from given custom loop normals.
|
|
*
|
|
* \param clnors: The computed custom loop normals.
|
|
* \param r_vert_clnors: The (already allocated) array where to store averaged per-vertex normals.
|
|
*/
|
|
void BKE_mesh_normals_loop_to_vertex(int numVerts,
|
|
const struct MLoop *mloops,
|
|
int numLoops,
|
|
const float (*clnors)[3],
|
|
float (*r_vert_clnors)[3]);
|
|
|
|
/**
|
|
* High-level custom normals functions.
|
|
*/
|
|
bool BKE_mesh_has_custom_loop_normals(struct Mesh *me);
|
|
|
|
void BKE_mesh_calc_normals_split(struct Mesh *mesh);
|
|
/**
|
|
* Compute 'split' (aka loop, or per face corner's) normals.
|
|
*
|
|
* \param r_lnors_spacearr: Allows to get computed loop normal space array.
|
|
* That data, among other things, contains 'smooth fan' info, useful e.g.
|
|
* to split geometry along sharp edges.
|
|
*/
|
|
void BKE_mesh_calc_normals_split_ex(struct Mesh *mesh,
|
|
struct MLoopNorSpaceArray *r_lnors_spacearr);
|
|
|
|
/**
|
|
* Higher level functions hiding most of the code needed around call to
|
|
* #BKE_mesh_normals_loop_custom_set().
|
|
*
|
|
* \param r_custom_loopnors: is not const, since code will replace zero_v3 normals there
|
|
* with automatically computed vectors.
|
|
*/
|
|
void BKE_mesh_set_custom_normals(struct Mesh *mesh, float (*r_custom_loopnors)[3]);
|
|
/**
|
|
* Higher level functions hiding most of the code needed around call to
|
|
* #BKE_mesh_normals_loop_custom_from_vertices_set().
|
|
*
|
|
* \param r_custom_vertnors: is not const, since code will replace zero_v3 normals there
|
|
* with automatically computed vectors.
|
|
*/
|
|
void BKE_mesh_set_custom_normals_from_vertices(struct Mesh *mesh, float (*r_custom_vertnors)[3]);
|
|
|
|
/* *** mesh_evaluate.cc *** */
|
|
|
|
void BKE_mesh_calc_poly_normal(const struct MPoly *mpoly,
|
|
const struct MLoop *loopstart,
|
|
const struct MVert *mvarray,
|
|
float r_no[3]);
|
|
void BKE_mesh_calc_poly_normal_coords(const struct MPoly *mpoly,
|
|
const struct MLoop *loopstart,
|
|
const float (*vertex_coords)[3],
|
|
float r_no[3]);
|
|
void BKE_mesh_calc_poly_center(const struct MPoly *mpoly,
|
|
const struct MLoop *loopstart,
|
|
const struct MVert *mvarray,
|
|
float r_cent[3]);
|
|
/* NOTE: passing poly-normal is only a speedup so we can skip calculating it. */
|
|
float BKE_mesh_calc_poly_area(const struct MPoly *mpoly,
|
|
const struct MLoop *loopstart,
|
|
const struct MVert *mvarray);
|
|
float BKE_mesh_calc_area(const struct Mesh *me);
|
|
float BKE_mesh_calc_poly_uv_area(const struct MPoly *mpoly, const struct MLoopUV *uv_array);
|
|
void BKE_mesh_calc_poly_angles(const struct MPoly *mpoly,
|
|
const struct MLoop *loopstart,
|
|
const struct MVert *mvarray,
|
|
float angles[]);
|
|
|
|
void BKE_mesh_poly_edgehash_insert(struct EdgeHash *ehash,
|
|
const struct MPoly *mp,
|
|
const struct MLoop *mloop);
|
|
void BKE_mesh_poly_edgebitmap_insert(unsigned int *edge_bitmap,
|
|
const struct MPoly *mp,
|
|
const struct MLoop *mloop);
|
|
|
|
bool BKE_mesh_center_median(const struct Mesh *me, float r_cent[3]);
|
|
/**
|
|
* Calculate the center from polygons,
|
|
* use when we want to ignore vertex locations that don't have connected faces.
|
|
*/
|
|
bool BKE_mesh_center_median_from_polys(const struct Mesh *me, float r_cent[3]);
|
|
bool BKE_mesh_center_bounds(const struct Mesh *me, float r_cent[3]);
|
|
bool BKE_mesh_center_of_surface(const struct Mesh *me, float r_cent[3]);
|
|
/**
|
|
* \note Mesh must be manifold with consistent face-winding,
|
|
* see #mesh_calc_poly_volume_centroid for details.
|
|
*/
|
|
bool BKE_mesh_center_of_volume(const struct Mesh *me, float r_cent[3]);
|
|
|
|
/**
|
|
* Calculate the volume and center.
|
|
*
|
|
* \param r_volume: Volume (unsigned).
|
|
* \param r_center: Center of mass.
|
|
*/
|
|
void BKE_mesh_calc_volume(const struct MVert *mverts,
|
|
int mverts_num,
|
|
const struct MLoopTri *mlooptri,
|
|
int looptri_num,
|
|
const struct MLoop *mloop,
|
|
float *r_volume,
|
|
float r_center[3]);
|
|
|
|
/* tessface */
|
|
void BKE_mesh_convert_mfaces_to_mpolys(struct Mesh *mesh);
|
|
/**
|
|
* The same as #BKE_mesh_convert_mfaces_to_mpolys
|
|
* but oriented to be used in #do_versions from `readfile.c`
|
|
* the difference is how active/render/clone/stencil indices are handled here.
|
|
*
|
|
* normally they're being set from `pdata` which totally makes sense for meshes which are already
|
|
* converted to #BMesh structures, but when loading older files indices shall be updated in other
|
|
* way around, so newly added `pdata` and `ldata` would have this indices set
|
|
* based on `fdata` layer.
|
|
*
|
|
* this is normally only needed when reading older files,
|
|
* in all other cases #BKE_mesh_convert_mfaces_to_mpolys shall be always used.
|
|
*/
|
|
void BKE_mesh_do_versions_convert_mfaces_to_mpolys(struct Mesh *mesh);
|
|
void BKE_mesh_convert_mfaces_to_mpolys_ex(struct ID *id,
|
|
struct CustomData *fdata,
|
|
struct CustomData *ldata,
|
|
struct CustomData *pdata,
|
|
int totedge_i,
|
|
int totface_i,
|
|
int totloop_i,
|
|
int totpoly_i,
|
|
struct MEdge *medge,
|
|
struct MFace *mface,
|
|
int *r_totloop,
|
|
int *r_totpoly,
|
|
struct MLoop **r_mloop,
|
|
struct MPoly **r_mpoly);
|
|
|
|
/**
|
|
* Flip a single MLoop's #MDisps structure,
|
|
* low level function to be called from face-flipping code which re-arranged the mdisps themselves.
|
|
*/
|
|
void BKE_mesh_mdisp_flip(struct MDisps *md, bool use_loop_mdisp_flip);
|
|
|
|
/**
|
|
* Flip (invert winding of) the given \a mpoly, i.e. reverse order of its loops
|
|
* (keeping the same vertex as 'start point').
|
|
*
|
|
* \param mpoly: the polygon to flip.
|
|
* \param mloop: the full loops array.
|
|
* \param ldata: the loops custom data.
|
|
*/
|
|
void BKE_mesh_polygon_flip_ex(struct MPoly *mpoly,
|
|
struct MLoop *mloop,
|
|
struct CustomData *ldata,
|
|
float (*lnors)[3],
|
|
struct MDisps *mdisp,
|
|
bool use_loop_mdisp_flip);
|
|
void BKE_mesh_polygon_flip(struct MPoly *mpoly, struct MLoop *mloop, struct CustomData *ldata);
|
|
/**
|
|
* Flip (invert winding of) all polygons (used to inverse their normals).
|
|
*
|
|
* \note Invalidates tessellation, caller must handle that.
|
|
*/
|
|
void BKE_mesh_polygons_flip(struct MPoly *mpoly,
|
|
struct MLoop *mloop,
|
|
struct CustomData *ldata,
|
|
int totpoly);
|
|
|
|
/* Merge verts. */
|
|
/* Enum for merge_mode of #BKE_mesh_merge_verts.
|
|
* Refer to mesh_merge.c for details. */
|
|
enum {
|
|
MESH_MERGE_VERTS_DUMP_IF_MAPPED,
|
|
MESH_MERGE_VERTS_DUMP_IF_EQUAL,
|
|
};
|
|
/**
|
|
* Merge Verts
|
|
*
|
|
* This frees the given mesh and returns a new mesh.
|
|
*
|
|
* \param vtargetmap: The table that maps vertices to target vertices. a value of -1
|
|
* indicates a vertex is a target, and is to be kept.
|
|
* This array is aligned with 'mesh->totvert'
|
|
* \warning \a vtargetmap must **not** contain any chained mapping (v1 -> v2 -> v3 etc.),
|
|
* this is not supported and will likely generate corrupted geometry.
|
|
*
|
|
* \param tot_vtargetmap: The number of non '-1' values in vtargetmap. (not the size)
|
|
*
|
|
* \param merge_mode: enum with two modes.
|
|
* - #MESH_MERGE_VERTS_DUMP_IF_MAPPED
|
|
* When called by the Mirror Modifier,
|
|
* In this mode it skips any faces that have all vertices merged (to avoid creating pairs
|
|
* of faces sharing the same set of vertices)
|
|
* - #MESH_MERGE_VERTS_DUMP_IF_EQUAL
|
|
* When called by the Array Modifier,
|
|
* In this mode, faces where all vertices are merged are double-checked,
|
|
* to see whether all target vertices actually make up a poly already.
|
|
* Indeed it could be that all of a poly's vertices are merged,
|
|
* but merged to vertices that do not make up a single poly,
|
|
* in which case the original poly should not be dumped.
|
|
* Actually this later behavior could apply to the Mirror Modifier as well,
|
|
* but the additional checks are costly and not necessary in the case of mirror,
|
|
* because each vertex is only merged to its own mirror.
|
|
*
|
|
* \note #BKE_mesh_tessface_calc_ex has to run on the returned DM
|
|
* if you want to access tess-faces.
|
|
*/
|
|
struct Mesh *BKE_mesh_merge_verts(struct Mesh *mesh,
|
|
const int *vtargetmap,
|
|
int tot_vtargetmap,
|
|
int merge_mode);
|
|
|
|
/* Flush flags. */
|
|
|
|
/**
|
|
* Update the hide flag for edges and faces from the corresponding flag in verts.
|
|
*/
|
|
void BKE_mesh_flush_hidden_from_verts_ex(const struct MVert *mvert,
|
|
const struct MLoop *mloop,
|
|
struct MEdge *medge,
|
|
int totedge,
|
|
struct MPoly *mpoly,
|
|
int totpoly);
|
|
void BKE_mesh_flush_hidden_from_verts(struct Mesh *me);
|
|
void BKE_mesh_flush_hidden_from_polys_ex(struct MVert *mvert,
|
|
const struct MLoop *mloop,
|
|
struct MEdge *medge,
|
|
int totedge,
|
|
const struct MPoly *mpoly,
|
|
int totpoly);
|
|
void BKE_mesh_flush_hidden_from_polys(struct Mesh *me);
|
|
/**
|
|
* simple poly -> vert/edge selection.
|
|
*/
|
|
void BKE_mesh_flush_select_from_polys_ex(struct MVert *mvert,
|
|
int totvert,
|
|
const struct MLoop *mloop,
|
|
struct MEdge *medge,
|
|
int totedge,
|
|
const struct MPoly *mpoly,
|
|
int totpoly);
|
|
void BKE_mesh_flush_select_from_polys(struct Mesh *me);
|
|
void BKE_mesh_flush_select_from_verts_ex(const struct MVert *mvert,
|
|
int totvert,
|
|
const struct MLoop *mloop,
|
|
struct MEdge *medge,
|
|
int totedge,
|
|
struct MPoly *mpoly,
|
|
int totpoly);
|
|
void BKE_mesh_flush_select_from_verts(struct Mesh *me);
|
|
|
|
/* spatial evaluation */
|
|
/**
|
|
* This function takes the difference between 2 vertex-coord-arrays
|
|
* (\a vert_cos_src, \a vert_cos_dst),
|
|
* and applies the difference to \a vert_cos_new relative to \a vert_cos_org.
|
|
*
|
|
* \param vert_cos_src: reference deform source.
|
|
* \param vert_cos_dst: reference deform destination.
|
|
*
|
|
* \param vert_cos_org: reference for the output location.
|
|
* \param vert_cos_new: resulting coords.
|
|
*/
|
|
void BKE_mesh_calc_relative_deform(const struct MPoly *mpoly,
|
|
int totpoly,
|
|
const struct MLoop *mloop,
|
|
int totvert,
|
|
|
|
const float (*vert_cos_src)[3],
|
|
const float (*vert_cos_dst)[3],
|
|
|
|
const float (*vert_cos_org)[3],
|
|
float (*vert_cos_new)[3]);
|
|
|
|
/* *** mesh_validate.c *** */
|
|
|
|
/**
|
|
* Validates and corrects a Mesh.
|
|
*
|
|
* \returns true if a change is made.
|
|
*/
|
|
bool BKE_mesh_validate(struct Mesh *me, bool do_verbose, bool cddata_check_mask);
|
|
/**
|
|
* Checks if a Mesh is valid without any modification. This is always verbose.
|
|
* \returns True if the mesh is valid.
|
|
*/
|
|
bool BKE_mesh_is_valid(struct Mesh *me);
|
|
/**
|
|
* Check all material indices of polygons are valid, invalid ones are set to 0.
|
|
* \returns True if the material indices are valid.
|
|
*/
|
|
bool BKE_mesh_validate_material_indices(struct Mesh *me);
|
|
|
|
/**
|
|
* Validate the mesh, \a do_fixes requires \a mesh to be non-null.
|
|
*
|
|
* \return false if no changes needed to be made.
|
|
*
|
|
* Vertex Normals
|
|
* ==============
|
|
*
|
|
* While zeroed normals are checked, these checks aren't comprehensive.
|
|
* Technically, to detect errors here a normal recalculation and comparison is necessary.
|
|
* However this function is mainly to prevent severe errors in geometry
|
|
* (invalid data that will crash Blender, or cause some features to behave incorrectly),
|
|
* not to detect subtle differences in the resulting normals which could be caused
|
|
* by importers that load normals (for example).
|
|
*/
|
|
bool BKE_mesh_validate_arrays(struct Mesh *me,
|
|
struct MVert *mverts,
|
|
unsigned int totvert,
|
|
struct MEdge *medges,
|
|
unsigned int totedge,
|
|
struct MFace *mfaces,
|
|
unsigned int totface,
|
|
struct MLoop *mloops,
|
|
unsigned int totloop,
|
|
struct MPoly *mpolys,
|
|
unsigned int totpoly,
|
|
struct MDeformVert *dverts, /* assume totvert length */
|
|
bool do_verbose,
|
|
bool do_fixes,
|
|
bool *r_change);
|
|
|
|
/**
|
|
* \returns is_valid.
|
|
*/
|
|
bool BKE_mesh_validate_all_customdata(struct CustomData *vdata,
|
|
uint totvert,
|
|
struct CustomData *edata,
|
|
uint totedge,
|
|
struct CustomData *ldata,
|
|
uint totloop,
|
|
struct CustomData *pdata,
|
|
uint totpoly,
|
|
bool check_meshmask,
|
|
bool do_verbose,
|
|
bool do_fixes,
|
|
bool *r_change);
|
|
|
|
void BKE_mesh_strip_loose_faces(struct Mesh *me);
|
|
/**
|
|
* Works on both loops and polys!
|
|
*
|
|
* \note It won't try to guess which loops of an invalid poly to remove!
|
|
* this is the work of the caller, to mark those loops.
|
|
* See e.g. #BKE_mesh_validate_arrays().
|
|
*/
|
|
void BKE_mesh_strip_loose_polysloops(struct Mesh *me);
|
|
void BKE_mesh_strip_loose_edges(struct Mesh *me);
|
|
|
|
/**
|
|
* If the mesh is from a very old blender version,
|
|
* convert mface->edcode to edge drawflags
|
|
*/
|
|
void BKE_mesh_calc_edges_legacy(struct Mesh *me, bool use_old);
|
|
void BKE_mesh_calc_edges_loose(struct Mesh *mesh);
|
|
/**
|
|
* Calculate edges from polygons.
|
|
*/
|
|
void BKE_mesh_calc_edges(struct Mesh *mesh, bool keep_existing_edges, bool select_new_edges);
|
|
/**
|
|
* Calculate/create edges from tessface data
|
|
*
|
|
* \param mesh: The mesh to add edges into
|
|
*/
|
|
void BKE_mesh_calc_edges_tessface(struct Mesh *mesh);
|
|
|
|
/* In DerivedMesh.cc */
|
|
void BKE_mesh_wrapper_deferred_finalize(struct Mesh *me_eval,
|
|
const struct CustomData_MeshMasks *cd_mask_finalize);
|
|
|
|
/* **** Depsgraph evaluation **** */
|
|
|
|
void BKE_mesh_eval_geometry(struct Depsgraph *depsgraph, struct Mesh *mesh);
|
|
|
|
/* Draw Cache */
|
|
void BKE_mesh_batch_cache_dirty_tag(struct Mesh *me, eMeshBatchDirtyMode mode);
|
|
void BKE_mesh_batch_cache_free(struct Mesh *me);
|
|
|
|
extern void (*BKE_mesh_batch_cache_dirty_tag_cb)(struct Mesh *me, eMeshBatchDirtyMode mode);
|
|
extern void (*BKE_mesh_batch_cache_free_cb)(struct Mesh *me);
|
|
|
|
/* mesh_debug.c */
|
|
#ifndef NDEBUG
|
|
char *BKE_mesh_debug_info(const struct Mesh *me)
|
|
ATTR_NONNULL(1) ATTR_MALLOC ATTR_WARN_UNUSED_RESULT;
|
|
void BKE_mesh_debug_print(const struct Mesh *me) ATTR_NONNULL(1);
|
|
#endif
|
|
|
|
/* Inlines */
|
|
|
|
/* NOTE(@sybren): Instead of -1 that function uses ORIGINDEX_NONE as defined in BKE_customdata.h,
|
|
* but I don't want to force every user of BKE_mesh.h to also include that file. */
|
|
BLI_INLINE int BKE_mesh_origindex_mface_mpoly(const int *index_mf_to_mpoly,
|
|
const int *index_mp_to_orig,
|
|
const int i)
|
|
{
|
|
const int j = index_mf_to_mpoly[i];
|
|
return (j != -1) ? (index_mp_to_orig ? index_mp_to_orig[j] : j) : -1;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|