1127 lines
37 KiB
C++
1127 lines
37 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 bke
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*/
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#include "CLG_log.h"
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#include "MEM_guardedalloc.h"
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#include "DNA_curve_types.h"
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#include "DNA_key_types.h"
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#include "DNA_material_types.h"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_meta_types.h"
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#include "DNA_object_types.h"
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#include "DNA_pointcloud_types.h"
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#include "DNA_scene_types.h"
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#include "BLI_index_range.hh"
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#include "BLI_listbase.h"
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#include "BLI_span.hh"
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#include "BLI_string.h"
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#include "BLI_utildefines.h"
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#include "BLT_translation.h"
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#include "BKE_DerivedMesh.hh"
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#include "BKE_curves.hh"
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#include "BKE_deform.h"
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#include "BKE_displist.h"
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#include "BKE_editmesh.hh"
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#include "BKE_geometry_set.hh"
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#include "BKE_geometry_set_instances.hh"
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#include "BKE_key.h"
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#include "BKE_lib_id.h"
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#include "BKE_lib_query.h"
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#include "BKE_main.h"
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#include "BKE_material.h"
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#include "BKE_mball.h"
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#include "BKE_mesh.hh"
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#include "BKE_mesh_runtime.hh"
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#include "BKE_mesh_wrapper.hh"
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#include "BKE_modifier.hh"
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#include "BKE_object_types.hh"
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/* these 2 are only used by conversion functions */
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#include "BKE_curve.hh"
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/* -- */
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#include "BKE_object.hh"
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/* -- */
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#include "BKE_pointcloud.h"
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#include "BKE_curve_to_mesh.hh"
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#include "DEG_depsgraph.hh"
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#include "DEG_depsgraph_query.hh"
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using blender::float3;
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using blender::IndexRange;
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using blender::MutableSpan;
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using blender::Span;
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using blender::StringRefNull;
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static CLG_LogRef LOG = {"bke.mesh_convert"};
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static Mesh *mesh_nurbs_displist_to_mesh(const Curve *cu, const ListBase *dispbase)
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{
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using namespace blender;
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using namespace blender::bke;
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int a, b, ofs;
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const bool conv_polys = (
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/* 2D polys are filled with #DispList.type == #DL_INDEX3. */
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(CU_DO_2DFILL(cu) == false) ||
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/* surf polys are never filled */
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BKE_curve_type_get(cu) == OB_SURF);
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/* count */
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int totvert = 0;
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int totedge = 0;
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int faces_num = 0;
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int totloop = 0;
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LISTBASE_FOREACH (const DispList *, dl, dispbase) {
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if (dl->type == DL_SEGM) {
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totvert += dl->parts * dl->nr;
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totedge += dl->parts * (dl->nr - 1);
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}
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else if (dl->type == DL_POLY) {
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if (conv_polys) {
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totvert += dl->parts * dl->nr;
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totedge += dl->parts * dl->nr;
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}
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}
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else if (dl->type == DL_SURF) {
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if (dl->parts != 0) {
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int tot;
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totvert += dl->parts * dl->nr;
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tot = (((dl->flag & DL_CYCL_U) ? 1 : 0) + (dl->nr - 1)) *
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(((dl->flag & DL_CYCL_V) ? 1 : 0) + (dl->parts - 1));
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faces_num += tot;
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totloop += tot * 4;
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}
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}
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else if (dl->type == DL_INDEX3) {
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int tot;
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totvert += dl->nr;
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tot = dl->parts;
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faces_num += tot;
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totloop += tot * 3;
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}
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}
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if (totvert == 0) {
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return BKE_mesh_new_nomain(0, 0, 0, 0);
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}
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Mesh *mesh = BKE_mesh_new_nomain(totvert, totedge, faces_num, totloop);
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MutableSpan<float3> positions = mesh->vert_positions_for_write();
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MutableSpan<blender::int2> edges = mesh->edges_for_write();
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MutableSpan<int> face_offsets = mesh->face_offsets_for_write();
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MutableSpan<int> corner_verts = mesh->corner_verts_for_write();
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MutableAttributeAccessor attributes = mesh->attributes_for_write();
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SpanAttributeWriter<int> material_indices = attributes.lookup_or_add_for_write_only_span<int>(
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"material_index", ATTR_DOMAIN_FACE);
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SpanAttributeWriter<bool> sharp_faces = attributes.lookup_or_add_for_write_span<bool>(
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"sharp_face", ATTR_DOMAIN_FACE);
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SpanAttributeWriter<float2> uv_attribute = attributes.lookup_or_add_for_write_span<float2>(
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DATA_("UVMap"), ATTR_DOMAIN_CORNER);
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MutableSpan<float2> uv_map = uv_attribute.span;
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int dst_vert = 0;
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int dst_edge = 0;
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int dst_poly = 0;
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int dst_loop = 0;
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LISTBASE_FOREACH (const DispList *, dl, dispbase) {
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const bool is_smooth = (dl->rt & CU_SMOOTH) != 0;
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if (dl->type == DL_SEGM) {
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const int startvert = dst_vert;
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a = dl->parts * dl->nr;
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const float *data = dl->verts;
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while (a--) {
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copy_v3_v3(positions[dst_vert], data);
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data += 3;
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dst_vert++;
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}
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for (a = 0; a < dl->parts; a++) {
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ofs = a * dl->nr;
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for (b = 1; b < dl->nr; b++) {
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edges[dst_edge][0] = startvert + ofs + b - 1;
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edges[dst_edge][1] = startvert + ofs + b;
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dst_edge++;
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}
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}
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}
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else if (dl->type == DL_POLY) {
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if (conv_polys) {
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const int startvert = dst_vert;
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a = dl->parts * dl->nr;
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const float *data = dl->verts;
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while (a--) {
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copy_v3_v3(positions[dst_vert], data);
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data += 3;
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dst_vert++;
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}
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for (a = 0; a < dl->parts; a++) {
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ofs = a * dl->nr;
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for (b = 0; b < dl->nr; b++) {
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edges[dst_edge][0] = startvert + ofs + b;
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if (b == dl->nr - 1) {
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edges[dst_edge][1] = startvert + ofs;
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}
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else {
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edges[dst_edge][1] = startvert + ofs + b + 1;
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}
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dst_edge++;
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}
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}
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}
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}
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else if (dl->type == DL_INDEX3) {
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const int startvert = dst_vert;
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a = dl->nr;
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const float *data = dl->verts;
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while (a--) {
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copy_v3_v3(positions[dst_vert], data);
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data += 3;
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dst_vert++;
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}
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a = dl->parts;
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const int *index = dl->index;
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while (a--) {
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corner_verts[dst_loop + 0] = startvert + index[0];
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corner_verts[dst_loop + 1] = startvert + index[2];
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corner_verts[dst_loop + 2] = startvert + index[1];
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face_offsets[dst_poly] = dst_loop;
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material_indices.span[dst_poly] = dl->col;
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for (int i = 0; i < 3; i++) {
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uv_map[dst_loop + i][0] = (corner_verts[dst_loop + i] - startvert) / float(dl->nr - 1);
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uv_map[dst_loop + i][1] = 0.0f;
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}
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sharp_faces.span[dst_poly] = !is_smooth;
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dst_poly++;
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dst_loop += 3;
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index += 3;
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}
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}
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else if (dl->type == DL_SURF) {
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const int startvert = dst_vert;
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a = dl->parts * dl->nr;
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const float *data = dl->verts;
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while (a--) {
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copy_v3_v3(positions[dst_vert], data);
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data += 3;
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dst_vert++;
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}
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for (a = 0; a < dl->parts; a++) {
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if ((dl->flag & DL_CYCL_V) == 0 && a == dl->parts - 1) {
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break;
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}
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int p1, p2, p3, p4;
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if (dl->flag & DL_CYCL_U) { /* p2 -> p1 -> */
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p1 = startvert + dl->nr * a; /* p4 -> p3 -> */
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p2 = p1 + dl->nr - 1; /* -----> next row */
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p3 = p1 + dl->nr;
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p4 = p2 + dl->nr;
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b = 0;
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}
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else {
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p2 = startvert + dl->nr * a;
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p1 = p2 + 1;
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p4 = p2 + dl->nr;
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p3 = p1 + dl->nr;
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b = 1;
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}
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if ((dl->flag & DL_CYCL_V) && a == dl->parts - 1) {
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p3 -= dl->parts * dl->nr;
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p4 -= dl->parts * dl->nr;
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}
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for (; b < dl->nr; b++) {
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corner_verts[dst_loop + 0] = p1;
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corner_verts[dst_loop + 1] = p3;
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corner_verts[dst_loop + 2] = p4;
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corner_verts[dst_loop + 3] = p2;
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face_offsets[dst_poly] = dst_loop;
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material_indices.span[dst_poly] = dl->col;
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int orco_sizeu = dl->nr - 1;
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int orco_sizev = dl->parts - 1;
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/* exception as handled in convertblender.c too */
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if (dl->flag & DL_CYCL_U) {
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orco_sizeu++;
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if (dl->flag & DL_CYCL_V) {
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orco_sizev++;
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}
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}
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else if (dl->flag & DL_CYCL_V) {
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orco_sizev++;
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}
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for (int i = 0; i < 4; i++) {
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/* find uv based on vertex index into grid array */
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int v = corner_verts[dst_loop + i] - startvert;
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uv_map[dst_loop + i][0] = (v / dl->nr) / float(orco_sizev);
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uv_map[dst_loop + i][1] = (v % dl->nr) / float(orco_sizeu);
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/* cyclic correction */
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if (ELEM(i, 1, 2) && uv_map[dst_loop + i][0] == 0.0f) {
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uv_map[dst_loop + i][0] = 1.0f;
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}
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if (ELEM(i, 0, 1) && uv_map[dst_loop + i][1] == 0.0f) {
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uv_map[dst_loop + i][1] = 1.0f;
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}
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}
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sharp_faces.span[dst_poly] = !is_smooth;
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dst_poly++;
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dst_loop += 4;
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p4 = p3;
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p3++;
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p2 = p1;
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p1++;
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}
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}
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}
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}
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if (faces_num) {
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BKE_mesh_calc_edges(mesh, true, false);
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}
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material_indices.finish();
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sharp_faces.finish();
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uv_attribute.finish();
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return mesh;
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}
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/**
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* Copy evaluated texture space from curve to mesh.
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*
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* \note We disable auto texture space feature since that will cause texture space to evaluate
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* differently for curve and mesh, since curves use control points and handles to calculate the
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* bounding box, and mesh uses the tessellated curve.
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*/
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static void mesh_copy_texture_space_from_curve_type(const Curve *cu, Mesh *me)
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{
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me->texspace_flag = cu->texspace_flag & ~CU_TEXSPACE_FLAG_AUTO;
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copy_v3_v3(me->texspace_location, cu->texspace_location);
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copy_v3_v3(me->texspace_size, cu->texspace_size);
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BKE_mesh_texspace_calc(me);
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}
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Mesh *BKE_mesh_new_nomain_from_curve_displist(const Object *ob, const ListBase *dispbase)
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{
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const Curve *cu = (const Curve *)ob->data;
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Mesh *mesh = mesh_nurbs_displist_to_mesh(cu, dispbase);
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mesh_copy_texture_space_from_curve_type(cu, mesh);
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mesh->mat = (Material **)MEM_dupallocN(cu->mat);
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mesh->totcol = cu->totcol;
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return mesh;
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}
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Mesh *BKE_mesh_new_nomain_from_curve(const Object *ob)
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{
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ListBase disp = {nullptr, nullptr};
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if (ob->runtime->curve_cache) {
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disp = ob->runtime->curve_cache->disp;
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}
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return BKE_mesh_new_nomain_from_curve_displist(ob, &disp);
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}
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struct EdgeLink {
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EdgeLink *next, *prev;
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const void *edge;
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};
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struct VertLink {
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Link *next, *prev;
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uint index;
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};
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static void prependPolyLineVert(ListBase *lb, uint index)
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{
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VertLink *vl = MEM_cnew<VertLink>("VertLink");
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vl->index = index;
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BLI_addhead(lb, vl);
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}
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static void appendPolyLineVert(ListBase *lb, uint index)
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{
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VertLink *vl = MEM_cnew<VertLink>("VertLink");
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vl->index = index;
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BLI_addtail(lb, vl);
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}
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void BKE_mesh_to_curve_nurblist(const Mesh *me, ListBase *nurblist, const int edge_users_test)
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{
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const Span<float3> positions = me->vert_positions();
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const Span<blender::int2> mesh_edges = me->edges();
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const blender::OffsetIndices polys = me->faces();
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const Span<int> corner_edges = me->corner_edges();
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/* only to detect edge polylines */
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int *edge_users;
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ListBase edges = {nullptr, nullptr};
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/* get boundary edges */
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edge_users = (int *)MEM_calloc_arrayN(mesh_edges.size(), sizeof(int), __func__);
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for (const int i : polys.index_range()) {
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for (const int edge : corner_edges.slice(polys[i])) {
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edge_users[edge]++;
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}
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}
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/* create edges from all faces (so as to find edges not in any faces) */
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for (const int i : mesh_edges.index_range()) {
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if (edge_users[i] == edge_users_test) {
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EdgeLink *edl = MEM_cnew<EdgeLink>("EdgeLink");
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edl->edge = &mesh_edges[i];
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BLI_addtail(&edges, edl);
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}
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}
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MEM_freeN(edge_users);
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if (edges.first) {
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while (edges.first) {
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/* each iteration find a polyline and add this as a nurbs poly spline */
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ListBase polyline = {nullptr, nullptr}; /* store a list of VertLink's */
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bool closed = false;
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int faces_num = 0;
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blender::int2 &edge_current = *(blender::int2 *)((EdgeLink *)edges.last)->edge;
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uint startVert = edge_current[0];
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uint endVert = edge_current[1];
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bool ok = true;
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appendPolyLineVert(&polyline, startVert);
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faces_num++;
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appendPolyLineVert(&polyline, endVert);
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faces_num++;
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BLI_freelinkN(&edges, edges.last);
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while (ok) { /* while connected edges are found... */
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EdgeLink *edl = (EdgeLink *)edges.last;
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ok = false;
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while (edl) {
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EdgeLink *edl_prev = edl->prev;
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const blender::int2 &edge = *(blender::int2 *)edl->edge;
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if (edge[0] == endVert) {
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endVert = edge[1];
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appendPolyLineVert(&polyline, endVert);
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faces_num++;
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BLI_freelinkN(&edges, edl);
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ok = true;
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}
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else if (edge[1] == endVert) {
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endVert = edge[0];
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appendPolyLineVert(&polyline, endVert);
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faces_num++;
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BLI_freelinkN(&edges, edl);
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ok = true;
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}
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else if (edge[0] == startVert) {
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startVert = edge[1];
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prependPolyLineVert(&polyline, startVert);
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faces_num++;
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BLI_freelinkN(&edges, edl);
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ok = true;
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}
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else if (edge[1] == startVert) {
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startVert = edge[0];
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prependPolyLineVert(&polyline, startVert);
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faces_num++;
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BLI_freelinkN(&edges, edl);
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ok = true;
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}
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edl = edl_prev;
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}
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}
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/* Now we have a polyline, make into a curve */
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if (startVert == endVert) {
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BLI_freelinkN(&polyline, polyline.last);
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faces_num--;
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closed = true;
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}
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/* --- nurbs --- */
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{
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Nurb *nu;
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BPoint *bp;
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VertLink *vl;
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/* create new 'nurb' within the curve */
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nu = MEM_new<Nurb>("MeshNurb", blender::dna::shallow_zero_initialize());
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nu->pntsu = faces_num;
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nu->pntsv = 1;
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nu->orderu = 4;
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nu->flagu = CU_NURB_ENDPOINT | (closed ? CU_NURB_CYCLIC : 0); /* endpoint */
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nu->resolu = 12;
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nu->bp = (BPoint *)MEM_calloc_arrayN(faces_num, sizeof(BPoint), "bpoints");
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/* add points */
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vl = (VertLink *)polyline.first;
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int i;
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for (i = 0, bp = nu->bp; i < faces_num; i++, bp++, vl = (VertLink *)vl->next) {
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copy_v3_v3(bp->vec, positions[vl->index]);
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bp->f1 = SELECT;
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bp->radius = bp->weight = 1.0;
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}
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BLI_freelistN(&polyline);
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|
/* add nurb to curve */
|
|
BLI_addtail(nurblist, nu);
|
|
}
|
|
/* --- done with nurbs --- */
|
|
}
|
|
}
|
|
}
|
|
|
|
void BKE_mesh_to_curve(Main *bmain, Depsgraph *depsgraph, Scene * /*scene*/, Object *ob)
|
|
{
|
|
const Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
|
|
if (!ob_eval) {
|
|
return;
|
|
}
|
|
const Mesh *me_eval = BKE_object_get_evaluated_mesh_no_subsurf(ob_eval);
|
|
if (!me_eval) {
|
|
return;
|
|
}
|
|
|
|
ListBase nurblist = {nullptr, nullptr};
|
|
|
|
BKE_mesh_to_curve_nurblist(me_eval, &nurblist, 0);
|
|
BKE_mesh_to_curve_nurblist(me_eval, &nurblist, 1);
|
|
|
|
if (nurblist.first) {
|
|
Curve *cu = BKE_curve_add(bmain, ob->id.name + 2, OB_CURVES_LEGACY);
|
|
cu->flag |= CU_3D;
|
|
|
|
cu->nurb = nurblist;
|
|
|
|
id_us_min(&((Mesh *)ob->data)->id);
|
|
ob->data = cu;
|
|
ob->type = OB_CURVES_LEGACY;
|
|
|
|
BKE_object_free_derived_caches(ob);
|
|
}
|
|
}
|
|
|
|
void BKE_mesh_to_pointcloud(Main *bmain, Depsgraph *depsgraph, Scene * /*scene*/, Object *ob)
|
|
{
|
|
BLI_assert(ob->type == OB_MESH);
|
|
const Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
|
|
if (!ob_eval) {
|
|
return;
|
|
}
|
|
const Mesh *mesh_eval = BKE_object_get_evaluated_mesh(ob_eval);
|
|
if (!mesh_eval) {
|
|
return;
|
|
}
|
|
|
|
PointCloud *pointcloud = (PointCloud *)BKE_pointcloud_add(bmain, ob->id.name + 2);
|
|
|
|
CustomData_free(&pointcloud->pdata, pointcloud->totpoint);
|
|
pointcloud->totpoint = mesh_eval->totvert;
|
|
CustomData_merge(
|
|
&mesh_eval->vert_data, &pointcloud->pdata, CD_MASK_PROP_ALL, mesh_eval->totvert);
|
|
|
|
BKE_id_materials_copy(bmain, (ID *)ob->data, (ID *)pointcloud);
|
|
|
|
id_us_min(&((Mesh *)ob->data)->id);
|
|
ob->data = pointcloud;
|
|
ob->type = OB_POINTCLOUD;
|
|
|
|
BKE_object_free_derived_caches(ob);
|
|
}
|
|
|
|
void BKE_pointcloud_to_mesh(Main *bmain, Depsgraph *depsgraph, Scene * /*scene*/, Object *ob)
|
|
{
|
|
BLI_assert(ob->type == OB_POINTCLOUD);
|
|
|
|
const Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
|
|
const blender::bke::GeometrySet geometry = blender::bke::object_get_evaluated_geometry_set(
|
|
*ob_eval);
|
|
|
|
Mesh *mesh = BKE_mesh_add(bmain, ob->id.name + 2);
|
|
|
|
if (const PointCloud *points = geometry.get_pointcloud()) {
|
|
mesh->totvert = points->totpoint;
|
|
CustomData_merge(&points->pdata, &mesh->vert_data, CD_MASK_PROP_ALL, points->totpoint);
|
|
}
|
|
|
|
BKE_id_materials_copy(bmain, (ID *)ob->data, (ID *)mesh);
|
|
|
|
id_us_min(&((PointCloud *)ob->data)->id);
|
|
ob->data = mesh;
|
|
ob->type = OB_MESH;
|
|
|
|
BKE_object_free_derived_caches(ob);
|
|
}
|
|
|
|
/* Create a temporary object to be used for nurbs-to-mesh conversion. */
|
|
static Object *object_for_curve_to_mesh_create(const Object *object)
|
|
{
|
|
const Curve *curve = (const Curve *)object->data;
|
|
|
|
/* Create a temporary object which can be evaluated and modified by generic
|
|
* curve evaluation (hence the #LIB_ID_COPY_SET_COPIED_ON_WRITE flag). */
|
|
Object *temp_object = (Object *)BKE_id_copy_ex(
|
|
nullptr, &object->id, nullptr, LIB_ID_COPY_LOCALIZE | LIB_ID_COPY_SET_COPIED_ON_WRITE);
|
|
|
|
/* Remove all modifiers, since we don't want them to be applied. */
|
|
BKE_object_free_modifiers(temp_object, LIB_ID_CREATE_NO_USER_REFCOUNT);
|
|
|
|
/* Need to create copy of curve itself as well, since it will be changed by the curve evaluation
|
|
* process. NOTE: Copies the data, but not the shape-keys. */
|
|
temp_object->data = BKE_id_copy_ex(nullptr,
|
|
(const ID *)object->data,
|
|
nullptr,
|
|
LIB_ID_COPY_LOCALIZE | LIB_ID_COPY_SET_COPIED_ON_WRITE);
|
|
Curve *temp_curve = (Curve *)temp_object->data;
|
|
|
|
/* Make sure texture space is calculated for a copy of curve, it will be used for the final
|
|
* result. */
|
|
BKE_curve_texspace_calc(temp_curve);
|
|
|
|
/* Temporarily set edit so we get updates from edit mode, but also because for text data-blocks
|
|
* copying it while in edit mode gives invalid data structures. */
|
|
temp_curve->editfont = curve->editfont;
|
|
temp_curve->editnurb = curve->editnurb;
|
|
|
|
return temp_object;
|
|
}
|
|
|
|
static void object_for_curve_to_mesh_free(Object *temp_object)
|
|
{
|
|
/* Clear edit mode pointers that were explicitly copied to the temporary curve. */
|
|
ID *final_object_data = static_cast<ID *>(temp_object->data);
|
|
if (GS(final_object_data->name) == ID_CU_LEGACY) {
|
|
Curve &curve = *reinterpret_cast<Curve *>(final_object_data);
|
|
curve.editfont = nullptr;
|
|
curve.editnurb = nullptr;
|
|
}
|
|
|
|
/* Only free the final object data if it is *not* stored in the #data_eval field. This is still
|
|
* necessary because #temp_object's data could be replaced by a #Curve data-block that isn't also
|
|
* assigned to #data_eval. */
|
|
const bool object_data_stored_in_data_eval = final_object_data ==
|
|
temp_object->runtime->data_eval;
|
|
|
|
BKE_id_free(nullptr, temp_object);
|
|
if (!object_data_stored_in_data_eval) {
|
|
BKE_id_free(nullptr, final_object_data);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Populate `object->runtime->curve_cache` which is then used to create the mesh.
|
|
*/
|
|
static void curve_to_mesh_eval_ensure(Object &object)
|
|
{
|
|
BLI_assert(GS(static_cast<ID *>(object.data)->name) == ID_CU_LEGACY);
|
|
Curve &curve = *static_cast<Curve *>(object.data);
|
|
/* Clear all modifiers for the bevel object.
|
|
*
|
|
* This is because they can not be reliably evaluated for an original object (at least because
|
|
* the state of dependencies is not know).
|
|
*
|
|
* So we create temporary copy of the object which will use same data as the original bevel, but
|
|
* will have no modifiers. */
|
|
Object bevel_object = blender::dna::shallow_zero_initialize();
|
|
blender::bke::ObjectRuntime bevel_runtime;
|
|
if (curve.bevobj != nullptr) {
|
|
bevel_object = blender::dna::shallow_copy(*curve.bevobj);
|
|
bevel_runtime = *curve.bevobj->runtime;
|
|
bevel_object.runtime = &bevel_runtime;
|
|
|
|
BLI_listbase_clear(&bevel_object.modifiers);
|
|
BKE_object_runtime_reset(&bevel_object);
|
|
curve.bevobj = &bevel_object;
|
|
}
|
|
|
|
/* Same thing for taper. */
|
|
Object taper_object = blender::dna::shallow_zero_initialize();
|
|
blender::bke::ObjectRuntime taper_runtime;
|
|
if (curve.taperobj != nullptr) {
|
|
taper_object = blender::dna::shallow_copy(*curve.taperobj);
|
|
taper_runtime = *curve.taperobj->runtime;
|
|
taper_object.runtime = &taper_runtime;
|
|
|
|
BLI_listbase_clear(&taper_object.modifiers);
|
|
BKE_object_runtime_reset(&taper_object);
|
|
curve.taperobj = &taper_object;
|
|
}
|
|
|
|
/* NOTE: We don't have dependency graph or scene here, so we pass nullptr. This is all fine since
|
|
* they are only used for modifier stack, which we have explicitly disabled for all objects.
|
|
*
|
|
* TODO(sergey): This is a very fragile logic, but proper solution requires re-writing quite a
|
|
* bit of internal functions (#BKE_mesh_nomain_to_mesh) and also Mesh From Curve operator.
|
|
* Brecht says hold off with that. */
|
|
BKE_displist_make_curveTypes(nullptr, nullptr, &object, true);
|
|
|
|
BKE_object_runtime_free_data(&bevel_object);
|
|
BKE_object_runtime_free_data(&taper_object);
|
|
}
|
|
|
|
static const Curves *get_evaluated_curves_from_object(const Object *object)
|
|
{
|
|
if (blender::bke::GeometrySet *geometry_set_eval = object->runtime->geometry_set_eval) {
|
|
return geometry_set_eval->get_curves();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static Mesh *mesh_new_from_evaluated_curve_type_object(const Object *evaluated_object)
|
|
{
|
|
if (const Mesh *mesh = BKE_object_get_evaluated_mesh(evaluated_object)) {
|
|
return BKE_mesh_copy_for_eval(mesh);
|
|
}
|
|
if (const Curves *curves = get_evaluated_curves_from_object(evaluated_object)) {
|
|
const blender::bke::AnonymousAttributePropagationInfo propagation_info;
|
|
return blender::bke::curve_to_wire_mesh(curves->geometry.wrap(), propagation_info);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static Mesh *mesh_new_from_curve_type_object(const Object *object)
|
|
{
|
|
/* If the object is evaluated, it should either have an evaluated mesh or curve data already.
|
|
* The mesh can be duplicated, or the curve converted to wire mesh edges. */
|
|
if (DEG_is_evaluated_object(object)) {
|
|
return mesh_new_from_evaluated_curve_type_object(object);
|
|
}
|
|
|
|
/* Otherwise, create a temporary "fake" evaluated object and try again. This might have
|
|
* different results, since in order to avoid having adverse affects to other original objects,
|
|
* modifiers are cleared. An alternative would be to create a temporary depsgraph only for this
|
|
* object and its dependencies. */
|
|
Object *temp_object = object_for_curve_to_mesh_create(object);
|
|
ID *temp_data = static_cast<ID *>(temp_object->data);
|
|
curve_to_mesh_eval_ensure(*temp_object);
|
|
|
|
/* If evaluating the curve replaced object data with different data, free the original data. */
|
|
if (temp_data != temp_object->data) {
|
|
if (GS(temp_data->name) == ID_CU_LEGACY) {
|
|
/* Clear edit mode pointers that were explicitly copied to the temporary curve. */
|
|
Curve *curve = reinterpret_cast<Curve *>(temp_data);
|
|
curve->editfont = nullptr;
|
|
curve->editnurb = nullptr;
|
|
}
|
|
BKE_id_free(nullptr, temp_data);
|
|
}
|
|
|
|
Mesh *mesh = mesh_new_from_evaluated_curve_type_object(temp_object);
|
|
|
|
object_for_curve_to_mesh_free(temp_object);
|
|
|
|
return mesh;
|
|
}
|
|
|
|
static Mesh *mesh_new_from_mball_object(Object *object)
|
|
{
|
|
/* NOTE: We can only create mesh for a polygonized meta ball. This figures out all original meta
|
|
* balls and all evaluated child meta balls (since polygonization is only stored in the mother
|
|
* ball).
|
|
*
|
|
* Create empty mesh so script-authors don't run into None objects. */
|
|
if (!DEG_is_evaluated_object(object)) {
|
|
return (Mesh *)BKE_id_new_nomain(ID_ME, ((ID *)object->data)->name + 2);
|
|
}
|
|
|
|
const Mesh *mesh_eval = BKE_object_get_evaluated_mesh(object);
|
|
if (mesh_eval == nullptr) {
|
|
return (Mesh *)BKE_id_new_nomain(ID_ME, ((ID *)object->data)->name + 2);
|
|
}
|
|
|
|
return BKE_mesh_copy_for_eval(mesh_eval);
|
|
}
|
|
|
|
static Mesh *mesh_new_from_mesh(Object *object, Mesh *mesh)
|
|
{
|
|
/* While we could copy this into the new mesh,
|
|
* add the data to 'mesh' so future calls to this function don't need to re-convert the data. */
|
|
if (mesh->runtime->wrapper_type == ME_WRAPPER_TYPE_BMESH) {
|
|
BKE_mesh_wrapper_ensure_mdata(mesh);
|
|
}
|
|
else {
|
|
mesh = BKE_mesh_wrapper_ensure_subdivision(mesh);
|
|
}
|
|
|
|
Mesh *mesh_result = (Mesh *)BKE_id_copy_ex(
|
|
nullptr, &mesh->id, nullptr, LIB_ID_CREATE_NO_MAIN | LIB_ID_CREATE_NO_USER_REFCOUNT);
|
|
/* NOTE: Materials should already be copied. */
|
|
/* Copy original mesh name. This is because edit meshes might not have one properly set name. */
|
|
STRNCPY(mesh_result->id.name, ((ID *)object->data)->name);
|
|
return mesh_result;
|
|
}
|
|
|
|
static Mesh *mesh_new_from_mesh_object_with_layers(Depsgraph *depsgraph,
|
|
Object *object,
|
|
const bool preserve_origindex)
|
|
{
|
|
if (DEG_is_original_id(&object->id)) {
|
|
return mesh_new_from_mesh(object, (Mesh *)object->data);
|
|
}
|
|
|
|
if (depsgraph == nullptr) {
|
|
return nullptr;
|
|
}
|
|
|
|
Object object_for_eval = blender::dna::shallow_copy(*object);
|
|
blender::bke::ObjectRuntime runtime = *object->runtime;
|
|
object_for_eval.runtime = &runtime;
|
|
|
|
if (object_for_eval.runtime->data_orig != nullptr) {
|
|
object_for_eval.data = object_for_eval.runtime->data_orig;
|
|
}
|
|
|
|
Scene *scene = DEG_get_evaluated_scene(depsgraph);
|
|
CustomData_MeshMasks mask = CD_MASK_MESH;
|
|
if (preserve_origindex) {
|
|
mask.vmask |= CD_MASK_ORIGINDEX;
|
|
mask.emask |= CD_MASK_ORIGINDEX;
|
|
mask.lmask |= CD_MASK_ORIGINDEX;
|
|
mask.pmask |= CD_MASK_ORIGINDEX;
|
|
}
|
|
Mesh *result = mesh_create_eval_final(depsgraph, scene, &object_for_eval, &mask);
|
|
return BKE_mesh_wrapper_ensure_subdivision(result);
|
|
}
|
|
|
|
static Mesh *mesh_new_from_mesh_object(Depsgraph *depsgraph,
|
|
Object *object,
|
|
const bool preserve_all_data_layers,
|
|
const bool preserve_origindex)
|
|
{
|
|
if (preserve_all_data_layers || preserve_origindex) {
|
|
return mesh_new_from_mesh_object_with_layers(depsgraph, object, preserve_origindex);
|
|
}
|
|
Mesh *mesh_input = (Mesh *)object->data;
|
|
/* If we are in edit mode, use evaluated mesh from edit structure, matching to what
|
|
* viewport is using for visualization. */
|
|
if (mesh_input->edit_mesh != nullptr) {
|
|
Mesh *editmesh_eval_final = BKE_object_get_editmesh_eval_final(object);
|
|
if (editmesh_eval_final != nullptr) {
|
|
mesh_input = editmesh_eval_final;
|
|
}
|
|
}
|
|
return mesh_new_from_mesh(object, mesh_input);
|
|
}
|
|
|
|
Mesh *BKE_mesh_new_from_object(Depsgraph *depsgraph,
|
|
Object *object,
|
|
const bool preserve_all_data_layers,
|
|
const bool preserve_origindex)
|
|
{
|
|
Mesh *new_mesh = nullptr;
|
|
switch (object->type) {
|
|
case OB_FONT:
|
|
case OB_CURVES_LEGACY:
|
|
case OB_SURF:
|
|
new_mesh = mesh_new_from_curve_type_object(object);
|
|
break;
|
|
case OB_MBALL:
|
|
new_mesh = mesh_new_from_mball_object(object);
|
|
break;
|
|
case OB_MESH:
|
|
new_mesh = mesh_new_from_mesh_object(
|
|
depsgraph, object, preserve_all_data_layers, preserve_origindex);
|
|
break;
|
|
default:
|
|
/* Object does not have geometry data. */
|
|
return nullptr;
|
|
}
|
|
if (new_mesh == nullptr) {
|
|
/* Happens in special cases like request of mesh for non-mother meta ball. */
|
|
return nullptr;
|
|
}
|
|
|
|
/* The result must have 0 users, since it's just a mesh which is free-dangling data-block.
|
|
* All the conversion functions are supposed to ensure mesh is not counted. */
|
|
BLI_assert(new_mesh->id.us == 0);
|
|
|
|
/* It is possible that mesh came from modifier stack evaluation, which preserves edit_mesh
|
|
* pointer (which allows draw manager to access edit mesh when drawing). Normally this does
|
|
* not cause ownership problems because evaluated object runtime is keeping track of the real
|
|
* ownership.
|
|
*
|
|
* Here we are constructing a mesh which is supposed to be independent, which means no shared
|
|
* ownership is allowed, so we make sure edit mesh is reset to nullptr (which is similar to as if
|
|
* one duplicates the objects and applies all the modifiers). */
|
|
new_mesh->edit_mesh = nullptr;
|
|
|
|
return new_mesh;
|
|
}
|
|
|
|
static int foreach_libblock_make_original_callback(LibraryIDLinkCallbackData *cb_data)
|
|
{
|
|
ID **id_p = cb_data->id_pointer;
|
|
if (*id_p == nullptr) {
|
|
return IDWALK_RET_NOP;
|
|
}
|
|
*id_p = DEG_get_original_id(*id_p);
|
|
|
|
return IDWALK_RET_NOP;
|
|
}
|
|
|
|
static int foreach_libblock_make_usercounts_callback(LibraryIDLinkCallbackData *cb_data)
|
|
{
|
|
ID **id_p = cb_data->id_pointer;
|
|
if (*id_p == nullptr) {
|
|
return IDWALK_RET_NOP;
|
|
}
|
|
|
|
const int cb_flag = cb_data->cb_flag;
|
|
if (cb_flag & IDWALK_CB_USER) {
|
|
id_us_plus(*id_p);
|
|
}
|
|
else if (cb_flag & IDWALK_CB_USER_ONE) {
|
|
/* NOTE: in that context, that one should not be needed (since there should be at least already
|
|
* one USER_ONE user of that ID), but better be consistent. */
|
|
id_us_ensure_real(*id_p);
|
|
}
|
|
return IDWALK_RET_NOP;
|
|
}
|
|
|
|
Mesh *BKE_mesh_new_from_object_to_bmain(Main *bmain,
|
|
Depsgraph *depsgraph,
|
|
Object *object,
|
|
bool preserve_all_data_layers)
|
|
{
|
|
BLI_assert(ELEM(object->type, OB_FONT, OB_CURVES_LEGACY, OB_SURF, OB_MBALL, OB_MESH));
|
|
|
|
Mesh *mesh = BKE_mesh_new_from_object(depsgraph, object, preserve_all_data_layers, false);
|
|
if (mesh == nullptr) {
|
|
/* Unable to convert the object to a mesh, return an empty one. */
|
|
Mesh *mesh_in_bmain = BKE_mesh_add(bmain, ((ID *)object->data)->name + 2);
|
|
id_us_min(&mesh_in_bmain->id);
|
|
return mesh_in_bmain;
|
|
}
|
|
|
|
/* Make sure mesh only points original data-blocks, also increase users of materials and other
|
|
* possibly referenced data-blocks.
|
|
*
|
|
* Going to original data-blocks is required to have bmain in a consistent state, where
|
|
* everything is only allowed to reference original data-blocks.
|
|
*
|
|
* Note that user-count updates has to be done *after* mesh has been transferred to Main database
|
|
* (since doing reference-counting on non-Main IDs is forbidden). */
|
|
BKE_library_foreach_ID_link(
|
|
nullptr, &mesh->id, foreach_libblock_make_original_callback, nullptr, IDWALK_NOP);
|
|
|
|
/* Append the mesh to 'bmain'.
|
|
* We do it a bit longer way since there is no simple and clear way of adding existing data-block
|
|
* to the 'bmain'. So we allocate new empty mesh in the 'bmain' (which guarantees all the naming
|
|
* and orders and flags) and move the temporary mesh in place there. */
|
|
Mesh *mesh_in_bmain = BKE_mesh_add(bmain, mesh->id.name + 2);
|
|
|
|
/* NOTE: BKE_mesh_nomain_to_mesh() does not copy materials and instead it preserves them in the
|
|
* destination mesh. So we "steal" materials before calling it.
|
|
*
|
|
* TODO(sergey): We really better have a function which gets and ID and accepts it for the bmain.
|
|
*/
|
|
mesh_in_bmain->mat = mesh->mat;
|
|
mesh_in_bmain->totcol = mesh->totcol;
|
|
mesh->mat = nullptr;
|
|
|
|
BKE_mesh_nomain_to_mesh(mesh, mesh_in_bmain, nullptr);
|
|
|
|
/* Anonymous attributes shouldn't exist on original data. */
|
|
mesh_in_bmain->attributes_for_write().remove_anonymous();
|
|
|
|
/* User-count is required because so far mesh was in a limbo, where library management does
|
|
* not perform any user management (i.e. copy of a mesh will not increase users of materials). */
|
|
BKE_library_foreach_ID_link(
|
|
nullptr, &mesh_in_bmain->id, foreach_libblock_make_usercounts_callback, nullptr, IDWALK_NOP);
|
|
|
|
/* Make sure user count from BKE_mesh_add() is the one we expect here and bring it down to 0. */
|
|
BLI_assert(mesh_in_bmain->id.us == 1);
|
|
id_us_min(&mesh_in_bmain->id);
|
|
|
|
return mesh_in_bmain;
|
|
}
|
|
|
|
static void copy_loose_vert_hint(const Mesh &src, Mesh &dst)
|
|
{
|
|
const auto &src_cache = src.runtime->loose_verts_cache;
|
|
if (src_cache.is_cached() && src_cache.data().count == 0) {
|
|
dst.tag_loose_verts_none();
|
|
}
|
|
}
|
|
|
|
static void copy_loose_edge_hint(const Mesh &src, Mesh &dst)
|
|
{
|
|
const auto &src_cache = src.runtime->loose_edges_cache;
|
|
if (src_cache.is_cached() && src_cache.data().count == 0) {
|
|
dst.tag_loose_edges_none();
|
|
}
|
|
}
|
|
|
|
static void copy_overlapping_hint(const Mesh &src, Mesh &dst)
|
|
{
|
|
if (src.no_overlapping_topology()) {
|
|
dst.tag_overlapping_none();
|
|
}
|
|
}
|
|
|
|
static KeyBlock *keyblock_ensure_from_uid(Key &key, const int uid, const StringRefNull name)
|
|
{
|
|
if (KeyBlock *kb = BKE_keyblock_find_uid(&key, uid)) {
|
|
return kb;
|
|
}
|
|
KeyBlock *kb = BKE_keyblock_add(&key, name.c_str());
|
|
kb->uid = uid;
|
|
return kb;
|
|
}
|
|
|
|
static int find_object_active_key_uid(const Key &key, const Object &object)
|
|
{
|
|
const int active_kb_index = object.shapenr - 1;
|
|
const KeyBlock *kb = (const KeyBlock *)BLI_findlink(&key.block, active_kb_index);
|
|
if (!kb) {
|
|
CLOG_ERROR(&LOG, "Could not find object's active shapekey %d", active_kb_index);
|
|
return -1;
|
|
}
|
|
return kb->uid;
|
|
}
|
|
|
|
static void move_shapekey_layers_to_keyblocks(const Mesh &mesh,
|
|
const CustomData &custom_data,
|
|
Key &key_dst,
|
|
const int actshape_uid)
|
|
{
|
|
using namespace blender::bke;
|
|
for (const int i : IndexRange(CustomData_number_of_layers(&custom_data, CD_SHAPEKEY))) {
|
|
const int layer_index = CustomData_get_layer_index_n(&custom_data, CD_SHAPEKEY, i);
|
|
const CustomDataLayer &layer = custom_data.layers[layer_index];
|
|
|
|
KeyBlock *kb = keyblock_ensure_from_uid(key_dst, layer.uid, layer.name);
|
|
MEM_SAFE_FREE(kb->data);
|
|
|
|
kb->totelem = mesh.totvert;
|
|
kb->data = MEM_malloc_arrayN(kb->totelem, sizeof(float3), __func__);
|
|
MutableSpan<float3> kb_coords(static_cast<float3 *>(kb->data), kb->totelem);
|
|
if (kb->uid == actshape_uid) {
|
|
mesh.attributes().lookup<float3>("position").varray.materialize(kb_coords);
|
|
}
|
|
else {
|
|
kb_coords.copy_from({static_cast<const float3 *>(layer.data), mesh.totvert});
|
|
}
|
|
}
|
|
|
|
LISTBASE_FOREACH (KeyBlock *, kb, &key_dst.block) {
|
|
if (kb->totelem != mesh.totvert) {
|
|
MEM_SAFE_FREE(kb->data);
|
|
kb->totelem = mesh.totvert;
|
|
kb->data = MEM_cnew_array<float3>(kb->totelem, __func__);
|
|
CLOG_ERROR(&LOG, "Data for shape key '%s' on mesh missing from evaluated mesh ", kb->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
void BKE_mesh_nomain_to_mesh(Mesh *mesh_src, Mesh *mesh_dst, Object *ob)
|
|
{
|
|
using namespace blender::bke;
|
|
BLI_assert(mesh_src->id.tag & LIB_TAG_NO_MAIN);
|
|
if (ob) {
|
|
BLI_assert(mesh_dst == ob->data);
|
|
}
|
|
|
|
BKE_mesh_clear_geometry_and_metadata(mesh_dst);
|
|
|
|
const bool verts_num_changed = mesh_dst->totvert != mesh_src->totvert;
|
|
mesh_dst->totvert = mesh_src->totvert;
|
|
mesh_dst->totedge = mesh_src->totedge;
|
|
mesh_dst->faces_num = mesh_src->faces_num;
|
|
mesh_dst->totloop = mesh_src->totloop;
|
|
|
|
/* Using #CD_MASK_MESH ensures that only data that should exist in Main meshes is moved. */
|
|
const CustomData_MeshMasks mask = CD_MASK_MESH;
|
|
CustomData_copy(&mesh_src->vert_data, &mesh_dst->vert_data, mask.vmask, mesh_src->totvert);
|
|
CustomData_copy(&mesh_src->edge_data, &mesh_dst->edge_data, mask.emask, mesh_src->totedge);
|
|
CustomData_copy(&mesh_src->face_data, &mesh_dst->face_data, mask.pmask, mesh_src->faces_num);
|
|
CustomData_copy(&mesh_src->loop_data, &mesh_dst->loop_data, mask.lmask, mesh_src->totloop);
|
|
std::swap(mesh_dst->face_offset_indices, mesh_src->face_offset_indices);
|
|
std::swap(mesh_dst->runtime->face_offsets_sharing_info,
|
|
mesh_src->runtime->face_offsets_sharing_info);
|
|
|
|
/* Make sure attribute names are moved. */
|
|
std::swap(mesh_dst->active_color_attribute, mesh_src->active_color_attribute);
|
|
std::swap(mesh_dst->default_color_attribute, mesh_src->default_color_attribute);
|
|
std::swap(mesh_dst->vertex_group_names, mesh_src->vertex_group_names);
|
|
|
|
BKE_mesh_copy_parameters(mesh_dst, mesh_src);
|
|
|
|
/* For original meshes, shape key data is stored in the #Key data-block, so it
|
|
* must be moved from the storage in #CustomData layers used for evaluation. */
|
|
if (Key *key_dst = mesh_dst->key) {
|
|
if (CustomData_has_layer(&mesh_src->vert_data, CD_SHAPEKEY)) {
|
|
/* If no object, set to -1 so we don't mess up any shapekey layers. */
|
|
const int uid_active = ob ? find_object_active_key_uid(*key_dst, *ob) : -1;
|
|
move_shapekey_layers_to_keyblocks(*mesh_dst, mesh_src->vert_data, *key_dst, uid_active);
|
|
}
|
|
else if (verts_num_changed) {
|
|
CLOG_WARN(&LOG, "Shape key data lost when replacing mesh '%s' in Main", mesh_src->id.name);
|
|
id_us_min(&mesh_dst->key->id);
|
|
mesh_dst->key = nullptr;
|
|
}
|
|
}
|
|
|
|
/* Caches can have a large memory impact and aren't necessarily used, so don't indiscriminantly
|
|
* store all of them in the #Main data-base mesh. However, some caches are quite small and
|
|
* copying them is "free" relative to how much work would be required if the data was needed. */
|
|
copy_loose_vert_hint(*mesh_src, *mesh_dst);
|
|
copy_loose_edge_hint(*mesh_src, *mesh_dst);
|
|
copy_overlapping_hint(*mesh_src, *mesh_dst);
|
|
|
|
BKE_id_free(nullptr, mesh_src);
|
|
}
|
|
|
|
void BKE_mesh_nomain_to_meshkey(Mesh *mesh_src, Mesh *mesh_dst, KeyBlock *kb)
|
|
{
|
|
BLI_assert(mesh_src->id.tag & LIB_TAG_NO_MAIN);
|
|
|
|
const int totvert = mesh_src->totvert;
|
|
|
|
if (totvert == 0 || mesh_dst->totvert == 0 || mesh_dst->totvert != totvert) {
|
|
return;
|
|
}
|
|
|
|
if (kb->data) {
|
|
MEM_freeN(kb->data);
|
|
}
|
|
kb->data = MEM_malloc_arrayN(mesh_dst->key->elemsize, mesh_dst->totvert, "kb->data");
|
|
kb->totelem = totvert;
|
|
MutableSpan(static_cast<float3 *>(kb->data), kb->totelem).copy_from(mesh_src->vert_positions());
|
|
}
|