c1bc70b711
A lot of files were missing copyright field in the header and
the Blender Foundation contributed to them in a sense of bug
fixing and general maintenance.
This change makes it explicit that those files are at least
partially copyrighted by the Blender Foundation.
Note that this does not make it so the Blender Foundation is
the only holder of the copyright in those files, and developers
who do not have a signed contract with the foundation still
hold the copyright as well.
Another aspect of this change is using SPDX format for the
header. We already used it for the license specification,
and now we state it for the copyright as well, following the
FAQ:
https://reuse.software/faq/
276 lines
6.9 KiB
C
276 lines
6.9 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Foundation
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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 bke
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*/
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#pragma once
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/**
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* Definitions which defines internal behavior of CCGSubSurf.
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*/
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/* Define this to see dump of the grids after the subsurf applied. */
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#undef DUMP_RESULT_GRIDS
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/* used for normalize_v3 in BLI_math_vector
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* float.h's FLT_EPSILON causes trouble with subsurf normals - campbell */
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#define EPSILON (1.0e-35f)
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/* With this limit a single triangle becomes over 3 million faces */
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#define CCGSUBSURF_LEVEL_MAX 11
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/**
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* Common type definitions.
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*/
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typedef unsigned char byte;
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/**
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* Hash implementation.
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*/
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typedef struct _EHEntry {
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struct _EHEntry *next;
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void *key;
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} EHEntry;
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typedef struct _EHash {
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EHEntry **buckets;
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int numEntries, curSize, curSizeIdx;
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CCGAllocatorIFC allocatorIFC;
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CCGAllocatorHDL allocator;
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} EHash;
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typedef void (*EHEntryFreeFP)(EHEntry *, void *);
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#define EHASH_alloc(eh, nb) ((eh)->allocatorIFC.alloc((eh)->allocator, nb))
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#define EHASH_free(eh, ptr) ((eh)->allocatorIFC.free((eh)->allocator, ptr))
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#define EHASH_hash(eh, item) (((uintptr_t)(item)) % ((unsigned int)(eh)->curSize))
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/* Generic hash functions. */
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EHash *ccg_ehash_new(int estimatedNumEntries,
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CCGAllocatorIFC *allocatorIFC,
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CCGAllocatorHDL allocator);
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void ccg_ehash_free(EHash *eh, EHEntryFreeFP freeEntry, void *userData);
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void ccg_ehash_insert(EHash *eh, EHEntry *entry);
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void *ccg_ehash_lookupWithPrev(EHash *eh, void *key, void ***prevp_r);
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void *ccg_ehash_lookup(EHash *eh, void *key);
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/* Hash elements iteration. */
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void ccg_ehashIterator_init(EHash *eh, EHashIterator *ehi);
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void *ccg_ehashIterator_getCurrent(EHashIterator *ehi);
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void ccg_ehashIterator_next(EHashIterator *ehi);
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int ccg_ehashIterator_isStopped(EHashIterator *ehi);
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/**
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* Standard allocator implementation.
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*/
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CCGAllocatorIFC *ccg_getStandardAllocatorIFC(void);
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/**
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* Catmull-Clark Gridding Subdivision Surface.
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*/
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/* TODO(sergey): Get rid of this, it's more or less a bad level call. */
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struct DerivedMesh;
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/* ** Data structures, constants. enums ** */
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enum {
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Vert_eEffected = (1 << 0),
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Vert_eChanged = (1 << 1),
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Vert_eSeam = (1 << 2),
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} /*VertFlags*/;
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enum {
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Edge_eEffected = (1 << 0),
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} /*CCGEdgeFlags*/;
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enum {
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Face_eEffected = (1 << 0),
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} /*FaceFlags*/;
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struct CCGVert {
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CCGVert *next; /* EHData.next */
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CCGVertHDL vHDL; /* EHData.key */
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short numEdges, numFaces, flags;
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int osd_index; /* Index of the vertex in the map, used by OSD. */
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CCGEdge **edges;
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CCGFace **faces;
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/* byte *levelData; */
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/* byte *userData; */
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};
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struct CCGEdge {
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CCGEdge *next; /* EHData.next */
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CCGEdgeHDL eHDL; /* EHData.key */
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short numFaces, flags;
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float crease;
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CCGVert *v0, *v1;
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CCGFace **faces;
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/* byte *levelData; */
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/* byte *userData; */
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};
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struct CCGFace {
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CCGFace *next; /* EHData.next */
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CCGFaceHDL fHDL; /* EHData.key */
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short numVerts, flags;
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int osd_index;
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/* CCGVert **verts; */
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/* CCGEdge **edges; */
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/* byte *centerData; */
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/* byte **gridData; */
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/* byte *userData; */
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};
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typedef enum {
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eSyncState_None = 0,
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eSyncState_Vert,
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eSyncState_Edge,
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eSyncState_Face,
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eSyncState_Partial,
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} SyncState;
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struct CCGSubSurf {
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EHash *vMap; /* map of CCGVertHDL -> Vert */
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EHash *eMap; /* map of CCGEdgeHDL -> Edge */
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EHash *fMap; /* map of CCGFaceHDL -> Face */
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CCGMeshIFC meshIFC;
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CCGAllocatorIFC allocatorIFC;
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CCGAllocatorHDL allocator;
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int subdivLevels;
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int numGrids;
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int allowEdgeCreation;
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float defaultCreaseValue;
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void *defaultEdgeUserData;
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void *q, *r;
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/* Data for calc vert normals. */
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int calcVertNormals;
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int normalDataOffset;
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/* Data for paint masks. */
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int allocMask;
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int maskDataOffset;
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/* Data for age'ing (to debug sync). */
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int currentAge;
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int useAgeCounts;
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int vertUserAgeOffset;
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int edgeUserAgeOffset;
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int faceUserAgeOffset;
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/* Data used during syncing. */
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SyncState syncState;
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EHash *oldVMap, *oldEMap, *oldFMap;
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int lenTempArrays;
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CCGVert **tempVerts;
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CCGEdge **tempEdges;
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};
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/* ** Utility macros ** */
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#define CCGSUBSURF_alloc(ss, nb) ((ss)->allocatorIFC.alloc((ss)->allocator, nb))
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#define CCGSUBSURF_realloc(ss, ptr, nb, ob) \
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((ss)->allocatorIFC.realloc((ss)->allocator, ptr, nb, ob))
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#define CCGSUBSURF_free(ss, ptr) ((ss)->allocatorIFC.free((ss)->allocator, ptr))
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#define VERT_getCo(v, lvl) ccg_vert_getCo(v, lvl, vertDataSize)
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#define VERT_getNo(v, lvl) ccg_vert_getNo(v, lvl, vertDataSize, normalDataOffset)
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#define EDGE_getCo(e, lvl, x) ccg_edge_getCo(e, lvl, x, vertDataSize)
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#define EDGE_getNo(e, lvl, x) ccg_edge_getNo(e, lvl, x, vertDataSize, normalDataOffset)
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#define FACE_getIFNo(f, lvl, S, x, y) \
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ccg_face_getIFNo(f, lvl, S, x, y, subdivLevels, vertDataSize, normalDataOffset)
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#if 0
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# define FACE_calcIFNo(f, lvl, S, x, y, no) \
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_face_calcIFNo(f, lvl, S, x, y, no, subdivLevels, vertDataSize)
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#endif
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#define FACE_getIENo(f, lvl, S, x) \
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ccg_face_getIENo(f, lvl, S, x, subdivLevels, vertDataSize, normalDataOffset)
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#define FACE_getIECo(f, lvl, S, x) ccg_face_getIECo(f, lvl, S, x, subdivLevels, vertDataSize)
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#define FACE_getIFCo(f, lvl, S, x, y) ccg_face_getIFCo(f, lvl, S, x, y, subdivLevels, vertDataSize)
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#define NormZero(av) \
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{ \
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float *_a = (float *)av; \
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_a[0] = _a[1] = _a[2] = 0.0f; \
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} \
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(void)0
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#define NormCopy(av, bv) \
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{ \
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float *_a = (float *)av, *_b = (float *)bv; \
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_a[0] = _b[0]; \
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_a[1] = _b[1]; \
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_a[2] = _b[2]; \
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} \
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(void)0
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#define NormAdd(av, bv) \
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{ \
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float *_a = (float *)av, *_b = (float *)bv; \
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_a[0] += _b[0]; \
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_a[1] += _b[1]; \
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_a[2] += _b[2]; \
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} \
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(void)0
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/* ** General purpose functions ** */
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/* * CCGSubSurf.c * */
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void ccgSubSurf__allFaces(CCGSubSurf *ss, CCGFace ***faces, int *numFaces, int *freeFaces);
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void ccgSubSurf__effectedFaceNeighbors(CCGSubSurf *ss,
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CCGFace **faces,
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int numFaces,
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CCGVert ***verts,
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int *numVerts,
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CCGEdge ***edges,
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int *numEdges);
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/* * CCGSubSurf_legacy.c * */
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void ccgSubSurf__sync_legacy(CCGSubSurf *ss);
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/* * CCGSubSurf_opensubdiv.c * */
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void ccgSubSurf__sync_opensubdiv(CCGSubSurf *ss);
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/* * CCGSubSurf_opensubdiv_converter.c * */
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struct OpenSubdiv_Converter;
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void ccgSubSurf_converter_setup_from_derivedmesh(CCGSubSurf *ss,
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struct DerivedMesh *dm,
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struct OpenSubdiv_Converter *converter);
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void ccgSubSurf_converter_setup_from_ccg(CCGSubSurf *ss, struct OpenSubdiv_Converter *converter);
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void ccgSubSurf_converter_free(struct OpenSubdiv_Converter *converter);
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/* * CCGSubSurf_util.c * */
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#ifdef DUMP_RESULT_GRIDS
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void ccgSubSurf__dumpCoords(CCGSubSurf *ss);
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#endif
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#include "CCGSubSurf_inline.h"
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