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/*
* ***** 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, Geoffrey Bantle, Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/bmesh/intern/bmesh_iterators_inline.h
* \ingroup bmesh
*
* BMesh inline iterator functions.
*/
#ifndef __BMESH_ITERATORS_INLINE_H__
#define __BMESH_ITERATORS_INLINE_H__
/* inline here optimizes out the switch statement when called with
* constant values (which is very common), nicer for loop-in-loop situations */
/**
* \brief Iterator Step
*
* Calls an iterators step function to return the next element.
*/
BLI_INLINE void *BM_iter_step(BMIter *iter)
{
return iter->step(iter);
}
/**
* \brief Iterator Init
*
* Takes a bmesh iterator structure and fills
* it with the appropriate function pointers based
* upon its type.
*/
BLI_INLINE bool BM_iter_init(BMIter *iter, BMesh *bm, const char itype, void *data)
{
/* int argtype; */
iter->itype = itype;
/* inlining optimizes out this switch when called with the defined type */
switch ((BMIterType)itype) {
case BM_VERTS_OF_MESH:
BLI_assert(bm != NULL);
BLI_assert(data == NULL);
iter->begin = (BMIter__begin_cb)bmiter__elem_of_mesh_begin;
iter->step = (BMIter__step_cb)bmiter__elem_of_mesh_step;
iter->data.elem_of_mesh.pooliter.pool = bm->vpool;
break;
case BM_EDGES_OF_MESH:
BLI_assert(bm != NULL);
BLI_assert(data == NULL);
iter->begin = (BMIter__begin_cb)bmiter__elem_of_mesh_begin;
iter->step = (BMIter__step_cb)bmiter__elem_of_mesh_step;
iter->data.elem_of_mesh.pooliter.pool = bm->epool;
break;
case BM_FACES_OF_MESH:
BLI_assert(bm != NULL);
BLI_assert(data == NULL);
iter->begin = (BMIter__begin_cb)bmiter__elem_of_mesh_begin;
iter->step = (BMIter__step_cb)bmiter__elem_of_mesh_step;
iter->data.elem_of_mesh.pooliter.pool = bm->fpool;
break;
case BM_EDGES_OF_VERT:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_VERT);
iter->begin = (BMIter__begin_cb)bmiter__edge_of_vert_begin;
iter->step = (BMIter__step_cb)bmiter__edge_of_vert_step;
iter->data.edge_of_vert.vdata = (BMVert *)data;
break;
case BM_FACES_OF_VERT:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_VERT);
iter->begin = (BMIter__begin_cb)bmiter__face_of_vert_begin;
iter->step = (BMIter__step_cb)bmiter__face_of_vert_step;
iter->data.face_of_vert.vdata = (BMVert *)data;
break;
case BM_LOOPS_OF_VERT:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_VERT);
iter->begin = (BMIter__begin_cb)bmiter__loop_of_vert_begin;
iter->step = (BMIter__step_cb)bmiter__loop_of_vert_step;
iter->data.loop_of_vert.vdata = (BMVert *)data;
break;
case BM_VERTS_OF_EDGE:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_EDGE);
iter->begin = (BMIter__begin_cb)bmiter__vert_of_edge_begin;
iter->step = (BMIter__step_cb)bmiter__vert_of_edge_step;
iter->data.vert_of_edge.edata = (BMEdge *)data;
break;
case BM_FACES_OF_EDGE:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_EDGE);
iter->begin = (BMIter__begin_cb)bmiter__face_of_edge_begin;
iter->step = (BMIter__step_cb)bmiter__face_of_edge_step;
iter->data.face_of_edge.edata = (BMEdge *)data;
break;
case BM_VERTS_OF_FACE:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_FACE);
iter->begin = (BMIter__begin_cb)bmiter__vert_of_face_begin;
iter->step = (BMIter__step_cb)bmiter__vert_of_face_step;
iter->data.vert_of_face.pdata = (BMFace *)data;
break;
case BM_EDGES_OF_FACE:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_FACE);
iter->begin = (BMIter__begin_cb)bmiter__edge_of_face_begin;
iter->step = (BMIter__step_cb)bmiter__edge_of_face_step;
iter->data.edge_of_face.pdata = (BMFace *)data;
break;
case BM_LOOPS_OF_FACE:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_FACE);
iter->begin = (BMIter__begin_cb)bmiter__loop_of_face_begin;
iter->step = (BMIter__step_cb)bmiter__loop_of_face_step;
iter->data.loop_of_face.pdata = (BMFace *)data;
break;
case BM_LOOPS_OF_LOOP:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_LOOP);
iter->begin = (BMIter__begin_cb)bmiter__loop_of_loop_begin;
iter->step = (BMIter__step_cb)bmiter__loop_of_loop_step;
iter->data.loop_of_loop.ldata = (BMLoop *)data;
break;
case BM_LOOPS_OF_EDGE:
BLI_assert(data != NULL);
BLI_assert(((BMElem *)data)->head.htype == BM_EDGE);
iter->begin = (BMIter__begin_cb)bmiter__loop_of_edge_begin;
iter->step = (BMIter__step_cb)bmiter__loop_of_edge_step;
iter->data.loop_of_edge.edata = (BMEdge *)data;
break;
default:
/* should never happen */
BLI_assert(0);
return false;
break;
}
iter->begin(iter);
return true;
}
/**
* \brief Iterator New
*
* Takes a bmesh iterator structure and fills
* it with the appropriate function pointers based
* upon its type and then calls BMeshIter_step()
* to return the first element of the iterator.
*
*/
BLI_INLINE void *BM_iter_new(BMIter *iter, BMesh *bm, const char itype, void *data)
{
if (LIKELY(BM_iter_init(iter, bm, itype, data))) {
return BM_iter_step(iter);
}
else {
return NULL;
}
}
#endif /* __BMESH_ITERATORS_INLINE_H__ */
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