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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_inline.h
* \ingroup bmesh
*
* BM Inline functions.
*/
#ifndef __BMESH_INLINE_H__
#define __BMESH_INLINE_H__
/* stuff for dealing with header flags */
#define BM_elem_flag_test( ele, hflag) _bm_elem_flag_test (&(ele)->head, hflag)
#define BM_elem_flag_test_bool(ele, hflag) _bm_elem_flag_test_bool(&(ele)->head, hflag)
#define BM_elem_flag_enable( ele, hflag) _bm_elem_flag_enable (&(ele)->head, hflag)
#define BM_elem_flag_disable( ele, hflag) _bm_elem_flag_disable (&(ele)->head, hflag)
#define BM_elem_flag_set( ele, hflag, val) _bm_elem_flag_set (&(ele)->head, hflag, val)
#define BM_elem_flag_toggle( ele, hflag) _bm_elem_flag_toggle (&(ele)->head, hflag)
#define BM_elem_flag_merge( ele_a, ele_b) _bm_elem_flag_merge (&(ele_a)->head, &(ele_b)->head)
#define BM_elem_flag_merge_into(ele, ele_a, ele_b)_bm_elem_flag_merge_into (&(ele)->head, &(ele_a)->head, &(ele_b)->head)
ATTR_WARN_UNUSED_RESULT
BLI_INLINE char _bm_elem_flag_test(const BMHeader *head, const char hflag)
{
return head->hflag & hflag;
}
ATTR_WARN_UNUSED_RESULT
BLI_INLINE bool _bm_elem_flag_test_bool(const BMHeader *head, const char hflag)
{
return (head->hflag & hflag) != 0;
}
BLI_INLINE void _bm_elem_flag_enable(BMHeader *head, const char hflag)
{
head->hflag |= hflag;
}
BLI_INLINE void _bm_elem_flag_disable(BMHeader *head, const char hflag)
{
head->hflag &= (char)~hflag;
}
BLI_INLINE void _bm_elem_flag_set(BMHeader *head, const char hflag, const int val)
{
if (val) _bm_elem_flag_enable(head, hflag);
else _bm_elem_flag_disable(head, hflag);
}
BLI_INLINE void _bm_elem_flag_toggle(BMHeader *head, const char hflag)
{
head->hflag ^= hflag;
}
BLI_INLINE void _bm_elem_flag_merge(BMHeader *head_a, BMHeader *head_b)
{
head_a->hflag = head_b->hflag = head_a->hflag | head_b->hflag;
}
BLI_INLINE void _bm_elem_flag_merge_into(BMHeader *head, const BMHeader *head_a, const BMHeader *head_b)
{
head->hflag = head_a->hflag | head_b->hflag;
}
/**
* notes on #BM_elem_index_set(...) usage,
* Set index is sometimes abused as temp storage, other times we cant be
* sure if the index values are valid because certain operations have modified
* the mesh structure.
*
* To set the elements to valid indices 'BM_mesh_elem_index_ensure' should be used
* rather then adding inline loops, however there are cases where we still
* set the index directly
*
* In an attempt to manage this,
* here are 5 tags I'm adding to uses of #BM_elem_index_set
*
* - 'set_inline' -- since the data is already being looped over set to a
* valid value inline.
*
* - 'set_dirty!' -- intentionally sets the index to an invalid value,
* flagging 'bm->elem_index_dirty' so we don't use it.
*
* - 'set_ok' -- this is valid use since the part of the code is low level.
*
* - 'set_ok_invalid' -- set to -1 on purpose since this should not be
* used without a full array re-index, do this on
* adding new vert/edge/faces since they may be added at
* the end of the array.
*
* - campbell */
#define BM_elem_index_get(ele) _bm_elem_index_get(&(ele)->head)
#define BM_elem_index_set(ele, index) _bm_elem_index_set(&(ele)->head, index)
BLI_INLINE void _bm_elem_index_set(BMHeader *head, const int index)
{
head->index = index;
}
ATTR_WARN_UNUSED_RESULT
BLI_INLINE int _bm_elem_index_get(const BMHeader *head)
{
return head->index;
}
#endif /* __BMESH_INLINE_H__ */
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