Campbell Barton
c434782e3a
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bmesh
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*
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* Pattern based geometry reduction which has the result similar to undoing
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* a subdivide operation.
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*/
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#include "BLI_math.h"
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#include "BLI_utildefines.h"
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#include "bmesh.h"
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#include "bmesh_tools.h"
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#include "intern/bmesh_operators_private.h" /* own include */
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void bmo_unsubdivide_exec(BMesh *bm, BMOperator *op)
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{
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/* - `BMVert.flag & BM_ELEM_TAG`: Shows we touched this vert.
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* - `BMVert.index == -1`: Shows we will remove this vert. */
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BMVert *v;
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BMIter iter;
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const int iterations = max_ii(1, BMO_slot_int_get(op->slots_in, "iterations"));
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BMOpSlot *vinput = BMO_slot_get(op->slots_in, "verts");
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BMVert **vinput_arr = (BMVert **)vinput->data.buf;
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int v_index;
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/* tag verts */
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BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) {
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BM_elem_flag_disable(v, BM_ELEM_TAG);
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}
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for (v_index = 0; v_index < vinput->len; v_index++) {
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v = vinput_arr[v_index];
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BM_elem_flag_enable(v, BM_ELEM_TAG);
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}
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/* do all the real work here */
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BM_mesh_decimate_unsubdivide_ex(bm, iterations, true);
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}
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