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Diffstat (limited to 'source/blender/bmesh/bmesh_iterators.h')
| -rw-r--r-- | source/blender/bmesh/bmesh_iterators.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/source/blender/bmesh/bmesh_iterators.h b/source/blender/bmesh/bmesh_iterators.h new file mode 100644 index 00000000000..51df9460e8b --- /dev/null +++ b/source/blender/bmesh/bmesh_iterators.h @@ -0,0 +1,136 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Joseph Eagar. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#ifndef __BMESH_ITERATORS_H__ +#define __BMESH_ITERATORS_H__ + +/** \file blender/bmesh/bmesh_iterators.h + * \ingroup bmesh + */ + +/* + * BMESH ITERATORS + * + * The functions and structures in this file + * provide a unified method for iterating over + * the elements of a mesh and answering simple + * adjacency queries. Tool authors should use + * the iterators provided in this file instead + * of inspecting the structure directly. + * +*/ + +#include "BLI_mempool.h" + +/* Defines for passing to BM_iter_new. + * + * "OF" can be substituted for "around" + * so BM_VERTS_OF_FACE means "vertices + * around a face." + */ + +/* these iterator over all elements of a specific + * type in the mesh.*/ +#define BM_VERTS_OF_MESH 1 +#define BM_EDGES_OF_MESH 2 +#define BM_FACES_OF_MESH 3 + +/*these are topological iterators.*/ +#define BM_EDGES_OF_VERT 4 +#define BM_FACES_OF_VERT 5 +#define BM_LOOPS_OF_VERT 6 +#define BM_FACES_OF_EDGE 7 +#define BM_VERTS_OF_FACE 8 +#define BM_EDGES_OF_FACE 9 +#define BM_LOOPS_OF_FACE 10 +/* returns elements from all boundaries, and returns + * the first element at the end to flag that we're entering + * a different face hole boundary*/ +#define BM_ALL_LOOPS_OF_FACE 11 + +/* iterate through loops around this loop, which are fetched + * from the other faces in the radial cycle surrounding the + * input loop's edge.*/ +#define BM_LOOPS_OF_LOOP 12 +#define BM_LOOPS_OF_EDGE 13 + +#define BM_ITER(ele, iter, bm, itype, data) \ + ele = BM_iter_new(iter, bm, itype, data); \ + for ( ; ele; ele=BM_iter_step(iter)) + +#define BM_ITER_INDEX(ele, iter, bm, itype, data, indexvar) \ + ele = BM_iter_new(iter, bm, itype, data); \ + for (indexvar=0; ele; indexvar++, ele=BM_iter_step(iter)) + +/*Iterator Structure*/ +typedef struct BMIter { + BLI_mempool_iter pooliter; + + struct BMVert *firstvert, *nextvert, *vdata; + struct BMEdge *firstedge, *nextedge, *edata; + struct BMLoop *firstloop, *nextloop, *ldata, *l; + struct BMFace *firstpoly, *nextpoly, *pdata; + struct BMesh *bm; + void (*begin)(struct BMIter *iter); + void *(*step)(struct BMIter *iter); + union { + void *p; + int i; + long l; + float f; + } filter; + int count; + char itype; +} BMIter; + +void *BM_iter_at_index(struct BMesh *bm, const char htype, void *data, int index); +int BM_iter_as_array(struct BMesh *bm, const char htype, void *data, void **array, const int len); + +/* private for bmesh_iterators_inline.c */ +void bmiter__vert_of_mesh_begin(struct BMIter *iter); +void *bmiter__vert_of_mesh_step(struct BMIter *iter); +void bmiter__edge_of_mesh_begin(struct BMIter *iter); +void *bmiter__edge_of_mesh_step(struct BMIter *iter); +void bmiter__face_of_mesh_begin(struct BMIter *iter); +void *bmiter__face_of_mesh_step(struct BMIter *iter); +void bmiter__edge_of_vert_begin(struct BMIter *iter); +void *bmiter__edge_of_vert_step(struct BMIter *iter); +void bmiter__face_of_vert_begin(struct BMIter *iter); +void *bmiter__face_of_vert_step(struct BMIter *iter); +void bmiter__loop_of_vert_begin(struct BMIter *iter); +void *bmiter__loop_of_vert_step(struct BMIter *iter); +void bmiter__loops_of_edge_begin(struct BMIter *iter); +void *bmiter__loops_of_edge_step(struct BMIter *iter); +void bmiter__loops_of_loop_begin(struct BMIter *iter); +void *bmiter__loops_of_loop_step(struct BMIter *iter); +void bmiter__face_of_edge_begin(struct BMIter *iter); +void *bmiter__face_of_edge_step(struct BMIter *iter); +void bmiter__vert_of_face_begin(struct BMIter *iter); +void *bmiter__vert_of_face_step(struct BMIter *iter); +void bmiter__edge_of_face_begin(struct BMIter *iter); +void *bmiter__edge_of_face_step(struct BMIter *iter); +void bmiter__loop_of_face_begin(struct BMIter *iter); +void *bmiter__loop_of_face_step(struct BMIter *iter); + +#include "intern/bmesh_iterators_inline.c" + +#endif /* __BMESH_ITERATORS_H__ */ |