e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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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 bmesh
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*
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* Duplicate geometry from one mesh from another.
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*/
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#include "DNA_object_types.h"
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#include "MEM_guardedalloc.h"
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#include "BLI_alloca.h"
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#include "BLI_math_vector.h"
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#include "bmesh.h"
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#include "intern/bmesh_private.h" /* for element checking */
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static BMVert *bm_vert_copy(BMesh *bm_src, BMesh *bm_dst, BMVert *v_src)
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{
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BMVert *v_dst = BM_vert_create(bm_dst, v_src->co, nullptr, BM_CREATE_SKIP_CD);
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BM_elem_attrs_copy(bm_src, bm_dst, v_src, v_dst);
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return v_dst;
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}
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static BMEdge *bm_edge_copy_with_arrays(BMesh *bm_src,
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BMesh *bm_dst,
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BMEdge *e_src,
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BMVert **verts_dst)
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{
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BMVert *e_dst_v1 = verts_dst[BM_elem_index_get(e_src->v1)];
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BMVert *e_dst_v2 = verts_dst[BM_elem_index_get(e_src->v2)];
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BMEdge *e_dst = BM_edge_create(bm_dst, e_dst_v1, e_dst_v2, nullptr, BM_CREATE_SKIP_CD);
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BM_elem_attrs_copy(bm_src, bm_dst, e_src, e_dst);
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return e_dst;
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}
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static BMFace *bm_face_copy_with_arrays(
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BMesh *bm_src, BMesh *bm_dst, BMFace *f_src, BMVert **verts_dst, BMEdge **edges_dst)
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{
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BMFace *f_dst;
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BMVert **vtar = BLI_array_alloca(vtar, f_src->len);
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BMEdge **edar = BLI_array_alloca(edar, f_src->len);
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BMLoop *l_iter_src, *l_iter_dst, *l_first_src;
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int i;
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l_first_src = BM_FACE_FIRST_LOOP(f_src);
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/* Lookup verts & edges. */
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l_iter_src = l_first_src;
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i = 0;
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do {
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vtar[i] = verts_dst[BM_elem_index_get(l_iter_src->v)];
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edar[i] = edges_dst[BM_elem_index_get(l_iter_src->e)];
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i++;
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} while ((l_iter_src = l_iter_src->next) != l_first_src);
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/* Create new face. */
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f_dst = BM_face_create(bm_dst, vtar, edar, f_src->len, nullptr, BM_CREATE_SKIP_CD);
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/* Copy attributes. */
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BM_elem_attrs_copy(bm_src, bm_dst, f_src, f_dst);
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/* Copy per-loop custom data. */
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l_iter_src = l_first_src;
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l_iter_dst = BM_FACE_FIRST_LOOP(f_dst);
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do {
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BM_elem_attrs_copy(bm_src, bm_dst, l_iter_src, l_iter_dst);
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} while ((void)(l_iter_dst = l_iter_dst->next), (l_iter_src = l_iter_src->next) != l_first_src);
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return f_dst;
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}
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void BM_mesh_copy_arrays(BMesh *bm_src,
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BMesh *bm_dst,
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BMVert **verts_src,
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uint verts_src_len,
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BMEdge **edges_src,
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uint edges_src_len,
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BMFace **faces_src,
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uint faces_src_len)
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{
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/* Vertices. */
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BMVert **verts_dst = static_cast<BMVert **>(
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MEM_mallocN(sizeof(*verts_dst) * verts_src_len, __func__));
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for (uint i = 0; i < verts_src_len; i++) {
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BMVert *v_src = verts_src[i];
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BM_elem_index_set(v_src, i); /* set_dirty! */
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BMVert *v_dst = bm_vert_copy(bm_src, bm_dst, v_src);
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BM_elem_index_set(v_dst, i); /* set_ok */
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verts_dst[i] = v_dst;
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}
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bm_src->elem_index_dirty |= BM_VERT;
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bm_dst->elem_index_dirty &= ~BM_VERT;
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/* Edges. */
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BMEdge **edges_dst = static_cast<BMEdge **>(
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MEM_mallocN(sizeof(*edges_dst) * edges_src_len, __func__));
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for (uint i = 0; i < edges_src_len; i++) {
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BMEdge *e_src = edges_src[i];
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BM_elem_index_set(e_src, i); /* set_dirty! */
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BMEdge *e_dst = bm_edge_copy_with_arrays(bm_src, bm_dst, e_src, verts_dst);
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BM_elem_index_set(e_dst, i);
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edges_dst[i] = e_dst;
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}
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bm_src->elem_index_dirty |= BM_EDGE;
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bm_dst->elem_index_dirty &= ~BM_EDGE;
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/* Faces. */
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for (uint i = 0; i < faces_src_len; i++) {
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BMFace *f_src = faces_src[i];
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BMFace *f_dst = bm_face_copy_with_arrays(bm_src, bm_dst, f_src, verts_dst, edges_dst);
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BM_elem_index_set(f_dst, i);
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}
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bm_dst->elem_index_dirty &= ~BM_FACE;
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/* Cleanup. */
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MEM_freeN(verts_dst);
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MEM_freeN(edges_dst);
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}
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