1369 lines
39 KiB
C++
1369 lines
39 KiB
C++
/* SPDX-FileCopyrightText: 2011 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 <climits>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include "CLG_log.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_object_types.h"
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#include "BLI_bitmap.h"
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#include "BLI_map.hh"
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#include "BLI_math_base.h"
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#include "BLI_math_vector.h"
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#include "BLI_ordered_edge.hh"
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#include "BLI_sys_types.h"
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#include "BLI_utildefines.h"
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#include "BLI_vector_set.hh"
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#include "BKE_attribute.hh"
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#include "BKE_customdata.h"
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#include "BKE_deform.h"
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#include "BKE_mesh.hh"
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#include "DEG_depsgraph.hh"
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#include "MEM_guardedalloc.h"
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using blender::float3;
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using blender::MutableSpan;
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using blender::Span;
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/* loop v/e are unsigned, so using max uint_32 value as invalid marker... */
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#define INVALID_LOOP_EDGE_MARKER 4294967295u
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static CLG_LogRef LOG = {"bke.mesh"};
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void strip_loose_facesloops(Mesh *me, blender::BitSpan faces_to_remove);
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void mesh_strip_edges(Mesh *me);
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/* -------------------------------------------------------------------- */
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/** \name Internal functions
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* \{ */
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union EdgeUUID {
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uint32_t verts[2];
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int64_t edval;
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};
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struct SortFace {
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EdgeUUID es[4];
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uint index;
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};
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/* Used to detect faces using exactly the same vertices. */
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/* Used to detect loops used by no (disjoint) or more than one (intersect) faces. */
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struct SortPoly {
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int *verts;
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int numverts;
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int loopstart;
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uint index;
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bool invalid; /* Poly index. */
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};
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static void edge_store_assign(uint32_t verts[2], const uint32_t v1, const uint32_t v2)
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{
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if (v1 < v2) {
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verts[0] = v1;
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verts[1] = v2;
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}
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else {
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verts[0] = v2;
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verts[1] = v1;
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}
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}
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static void edge_store_from_mface_quad(EdgeUUID es[4], MFace *mf)
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{
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edge_store_assign(es[0].verts, mf->v1, mf->v2);
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edge_store_assign(es[1].verts, mf->v2, mf->v3);
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edge_store_assign(es[2].verts, mf->v3, mf->v4);
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edge_store_assign(es[3].verts, mf->v4, mf->v1);
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}
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static void edge_store_from_mface_tri(EdgeUUID es[4], MFace *mf)
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{
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edge_store_assign(es[0].verts, mf->v1, mf->v2);
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edge_store_assign(es[1].verts, mf->v2, mf->v3);
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edge_store_assign(es[2].verts, mf->v3, mf->v1);
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es[3].verts[0] = es[3].verts[1] = UINT_MAX;
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}
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static int int64_cmp(const void *v1, const void *v2)
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{
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const int64_t x1 = *(const int64_t *)v1;
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const int64_t x2 = *(const int64_t *)v2;
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if (x1 > x2) {
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return 1;
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}
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if (x1 < x2) {
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return -1;
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}
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return 0;
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}
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static int search_face_cmp(const void *v1, const void *v2)
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{
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const SortFace *sfa = static_cast<const SortFace *>(v1);
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const SortFace *sfb = static_cast<const SortFace *>(v2);
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if (sfa->es[0].edval > sfb->es[0].edval) {
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return 1;
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}
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if (sfa->es[0].edval < sfb->es[0].edval) {
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return -1;
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}
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if (sfa->es[1].edval > sfb->es[1].edval) {
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return 1;
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}
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if (sfa->es[1].edval < sfb->es[1].edval) {
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return -1;
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}
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if (sfa->es[2].edval > sfb->es[2].edval) {
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return 1;
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}
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if (sfa->es[2].edval < sfb->es[2].edval) {
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return -1;
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}
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if (sfa->es[3].edval > sfb->es[3].edval) {
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return 1;
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}
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if (sfa->es[3].edval < sfb->es[3].edval) {
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return -1;
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}
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return 0;
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}
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/* TODO: check there is not some standard define of this somewhere! */
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static int int_cmp(const void *v1, const void *v2)
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{
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return *(int *)v1 > *(int *)v2 ? 1 : *(int *)v1 < *(int *)v2 ? -1 : 0;
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}
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static int search_poly_cmp(const void *v1, const void *v2)
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{
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const SortPoly *sp1 = static_cast<const SortPoly *>(v1);
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const SortPoly *sp2 = static_cast<const SortPoly *>(v2);
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/* Reject all invalid faces at end of list! */
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if (sp1->invalid || sp2->invalid) {
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return sp1->invalid ? (sp2->invalid ? 0 : 1) : -1;
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}
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/* Else, sort on first non-equal verts (remember verts of valid faces are sorted). */
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const int max_idx = sp1->numverts > sp2->numverts ? sp2->numverts : sp1->numverts;
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for (int idx = 0; idx < max_idx; idx++) {
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const int v1_i = sp1->verts[idx];
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const int v2_i = sp2->verts[idx];
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if (v1_i != v2_i) {
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return (v1_i > v2_i) ? 1 : -1;
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}
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}
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return sp1->numverts > sp2->numverts ? 1 : sp1->numverts < sp2->numverts ? -1 : 0;
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}
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static int search_polyloop_cmp(const void *v1, const void *v2)
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{
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const SortPoly *sp1 = static_cast<const SortPoly *>(v1);
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const SortPoly *sp2 = static_cast<const SortPoly *>(v2);
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/* Reject all invalid faces at end of list! */
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if (sp1->invalid || sp2->invalid) {
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return sp1->invalid && sp2->invalid ? 0 : sp1->invalid ? 1 : -1;
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}
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/* Else, sort on loopstart. */
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return sp1->loopstart > sp2->loopstart ? 1 : sp1->loopstart < sp2->loopstart ? -1 : 0;
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Mesh Validation
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* \{ */
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#define PRINT_MSG(...) \
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if (do_verbose) { \
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CLOG_INFO(&LOG, 1, __VA_ARGS__); \
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} \
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((void)0)
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#define PRINT_ERR(...) \
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do { \
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is_valid = false; \
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if (do_verbose) { \
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CLOG_ERROR(&LOG, __VA_ARGS__); \
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} \
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} while (0)
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/* NOLINTNEXTLINE: readability-function-size */
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bool BKE_mesh_validate_arrays(Mesh *mesh,
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float (*vert_positions)[3],
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uint totvert,
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blender::int2 *edges,
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uint totedge,
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MFace *mfaces,
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uint totface,
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int *corner_verts,
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int *corner_edges,
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uint totloop,
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int *face_offsets,
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uint faces_num,
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MDeformVert *dverts, /* assume totvert length */
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const bool do_verbose,
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const bool do_fixes,
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bool *r_changed)
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{
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using namespace blender;
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#define REMOVE_EDGE_TAG(_me) \
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{ \
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_me[0] = _me[1]; \
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free_flag.edges = do_fixes; \
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} \
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(void)0
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#define IS_REMOVED_EDGE(_me) (_me[0] == _me[1])
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#define REMOVE_LOOP_TAG(corner) \
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{ \
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corner_edges[corner] = INVALID_LOOP_EDGE_MARKER; \
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free_flag.polyloops = do_fixes; \
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} \
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(void)0
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blender::BitVector<> faces_to_remove(faces_num);
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blender::bke::AttributeWriter<int> material_indices =
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mesh->attributes_for_write().lookup_for_write<int>("material_index");
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blender::MutableVArraySpan<int> material_indices_span(material_indices.varray);
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#if 0
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const blender::OffsetIndices<int> faces({face_offsets, faces_num + 1});
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for (const int i : faces.index_range()) {
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BLI_assert(faces[i].size() > 2);
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}
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#endif
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uint i, j;
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int *v;
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bool is_valid = true;
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union {
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struct {
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int verts : 1;
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int verts_weight : 1;
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int loops_edge : 1;
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};
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int as_flag;
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} fix_flag;
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union {
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struct {
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int edges : 1;
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int faces : 1;
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/* This regroups loops and faces! */
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int polyloops : 1;
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int mselect : 1;
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};
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int as_flag;
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} free_flag;
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union {
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struct {
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int edges : 1;
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};
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int as_flag;
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} recalc_flag;
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Map<OrderedEdge, int> edge_hash;
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edge_hash.reserve(totedge);
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BLI_assert(!(do_fixes && mesh == nullptr));
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fix_flag.as_flag = 0;
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free_flag.as_flag = 0;
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recalc_flag.as_flag = 0;
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PRINT_MSG("verts(%u), edges(%u), loops(%u), polygons(%u)", totvert, totedge, totloop, faces_num);
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if (totedge == 0 && faces_num != 0) {
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PRINT_ERR("\tLogical error, %u polygons and 0 edges", faces_num);
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recalc_flag.edges = do_fixes;
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}
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for (i = 0; i < totvert; i++) {
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for (j = 0; j < 3; j++) {
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if (!isfinite(vert_positions[i][j])) {
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PRINT_ERR("\tVertex %u: has invalid coordinate", i);
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if (do_fixes) {
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zero_v3(vert_positions[i]);
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fix_flag.verts = true;
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}
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}
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}
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}
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for (i = 0; i < totedge; i++) {
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blender::int2 &edge = edges[i];
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bool remove = false;
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if (edge[0] == edge[1]) {
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PRINT_ERR("\tEdge %u: has matching verts, both %d", i, edge[0]);
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remove = do_fixes;
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}
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if (edge[0] >= totvert) {
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PRINT_ERR("\tEdge %u: v1 index out of range, %d", i, edge[0]);
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remove = do_fixes;
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}
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if (edge[1] >= totvert) {
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PRINT_ERR("\tEdge %u: v2 index out of range, %d", i, edge[1]);
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remove = do_fixes;
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}
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if ((edge[0] != edge[1]) && edge_hash.contains(edge)) {
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PRINT_ERR("\tEdge %u: is a duplicate of %d", i, edge_hash.lookup(edge));
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remove = do_fixes;
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}
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if (remove == false) {
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if (edge[0] != edge[1]) {
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edge_hash.add(edge, i);
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}
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}
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else {
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REMOVE_EDGE_TAG(edge);
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}
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}
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if (mfaces && !face_offsets) {
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#define REMOVE_FACE_TAG(_mf) \
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{ \
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_mf->v3 = 0; \
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free_flag.faces = do_fixes; \
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} \
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(void)0
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#define CHECK_FACE_VERT_INDEX(a, b) \
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if (mf->a == mf->b) { \
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PRINT_ERR(" face %u: verts invalid, " STRINGIFY(a) "/" STRINGIFY(b) " both %u", i, mf->a); \
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remove = do_fixes; \
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} \
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(void)0
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#define CHECK_FACE_EDGE(a, b) \
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if (!edge_hash.contains({mf->a, mf->b})) { \
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PRINT_ERR(" face %u: edge " STRINGIFY(a) "/" STRINGIFY(b) " (%u,%u) is missing edge data", \
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i, \
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mf->a, \
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mf->b); \
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recalc_flag.edges = do_fixes; \
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} \
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(void)0
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MFace *mf;
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MFace *mf_prev;
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SortFace *sort_faces = (SortFace *)MEM_callocN(sizeof(SortFace) * totface, "search faces");
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SortFace *sf;
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SortFace *sf_prev;
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uint totsortface = 0;
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PRINT_ERR("No Polys, only tessellated Faces");
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for (i = 0, mf = mfaces, sf = sort_faces; i < totface; i++, mf++) {
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bool remove = false;
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int fidx;
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uint fv[4];
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fidx = mf->v4 ? 3 : 2;
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do {
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fv[fidx] = *(&(mf->v1) + fidx);
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if (fv[fidx] >= totvert) {
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PRINT_ERR("\tFace %u: 'v%d' index out of range, %u", i, fidx + 1, fv[fidx]);
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remove = do_fixes;
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}
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} while (fidx--);
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if (remove == false) {
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if (mf->v4) {
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CHECK_FACE_VERT_INDEX(v1, v2);
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CHECK_FACE_VERT_INDEX(v1, v3);
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CHECK_FACE_VERT_INDEX(v1, v4);
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CHECK_FACE_VERT_INDEX(v2, v3);
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CHECK_FACE_VERT_INDEX(v2, v4);
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CHECK_FACE_VERT_INDEX(v3, v4);
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}
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else {
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CHECK_FACE_VERT_INDEX(v1, v2);
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CHECK_FACE_VERT_INDEX(v1, v3);
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CHECK_FACE_VERT_INDEX(v2, v3);
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}
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if (remove == false) {
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if (totedge) {
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if (mf->v4) {
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CHECK_FACE_EDGE(v1, v2);
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CHECK_FACE_EDGE(v2, v3);
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CHECK_FACE_EDGE(v3, v4);
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CHECK_FACE_EDGE(v4, v1);
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}
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else {
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CHECK_FACE_EDGE(v1, v2);
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CHECK_FACE_EDGE(v2, v3);
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CHECK_FACE_EDGE(v3, v1);
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}
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}
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sf->index = i;
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if (mf->v4) {
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edge_store_from_mface_quad(sf->es, mf);
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qsort(sf->es, 4, sizeof(int64_t), int64_cmp);
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}
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else {
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edge_store_from_mface_tri(sf->es, mf);
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qsort(sf->es, 3, sizeof(int64_t), int64_cmp);
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}
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totsortface++;
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sf++;
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}
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}
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if (remove) {
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REMOVE_FACE_TAG(mf);
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}
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}
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qsort(sort_faces, totsortface, sizeof(SortFace), search_face_cmp);
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sf = sort_faces;
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sf_prev = sf;
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sf++;
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for (i = 1; i < totsortface; i++, sf++) {
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bool remove = false;
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/* on a valid mesh, code below will never run */
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if (memcmp(sf->es, sf_prev->es, sizeof(sf_prev->es)) == 0) {
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mf = mfaces + sf->index;
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if (do_verbose) {
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mf_prev = mfaces + sf_prev->index;
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if (mf->v4) {
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PRINT_ERR("\tFace %u & %u: are duplicates (%u,%u,%u,%u) (%u,%u,%u,%u)",
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sf->index,
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sf_prev->index,
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mf->v1,
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mf->v2,
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mf->v3,
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mf->v4,
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mf_prev->v1,
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mf_prev->v2,
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mf_prev->v3,
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mf_prev->v4);
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}
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else {
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PRINT_ERR("\tFace %u & %u: are duplicates (%u,%u,%u) (%u,%u,%u)",
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sf->index,
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sf_prev->index,
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mf->v1,
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mf->v2,
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mf->v3,
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mf_prev->v1,
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mf_prev->v2,
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mf_prev->v3);
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}
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}
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remove = do_fixes;
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}
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else {
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sf_prev = sf;
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}
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if (remove) {
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REMOVE_FACE_TAG(mf);
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}
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}
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MEM_freeN(sort_faces);
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#undef REMOVE_FACE_TAG
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#undef CHECK_FACE_VERT_INDEX
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#undef CHECK_FACE_EDGE
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}
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/* Checking loops and faces is a bit tricky, as they are quite intricate...
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*
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* Polys must have:
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* - a valid loopstart value.
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* - a valid totloop value (>= 3 and loopstart+totloop < me.totloop).
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*
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* Loops must have:
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* - a valid v value.
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* - a valid e value (corresponding to the edge it defines with the next loop in face).
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*
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* Also, loops not used by faces can be discarded.
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* And "intersecting" loops (i.e. loops used by more than one face) are invalid,
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|
* so be sure to leave at most one face per loop!
|
|
*/
|
|
{
|
|
BLI_bitmap *vert_tag = BLI_BITMAP_NEW(mesh->totvert, __func__);
|
|
|
|
SortPoly *sort_polys = (SortPoly *)MEM_callocN(sizeof(SortPoly) * faces_num,
|
|
"mesh validate's sort_polys");
|
|
SortPoly *prev_sp, *sp = sort_polys;
|
|
int prev_end;
|
|
|
|
for (const int64_t i : blender::IndexRange(faces_num)) {
|
|
const int poly_start = face_offsets[i];
|
|
const int poly_size = face_offsets[i + 1] - poly_start;
|
|
sp->index = i;
|
|
|
|
/* Material index, isolated from other tests here. While large indices are clamped,
|
|
* negative indices aren't supported by drawing, exporters etc.
|
|
* To check the indices are in range, use #BKE_mesh_validate_material_indices */
|
|
if (material_indices && material_indices_span[i] < 0) {
|
|
PRINT_ERR("\tPoly %u has invalid material (%d)", sp->index, material_indices_span[i]);
|
|
if (do_fixes) {
|
|
material_indices_span[i] = 0;
|
|
}
|
|
}
|
|
|
|
if (poly_start < 0 || poly_size < 3) {
|
|
/* Invalid loop data. */
|
|
PRINT_ERR(
|
|
"\tPoly %u is invalid (loopstart: %d, totloop: %d)", sp->index, poly_start, poly_size);
|
|
sp->invalid = true;
|
|
}
|
|
else if (poly_start + poly_size > totloop) {
|
|
/* Invalid loop data. */
|
|
PRINT_ERR(
|
|
"\tPoly %u uses loops out of range "
|
|
"(loopstart: %d, loopend: %d, max number of loops: %u)",
|
|
sp->index,
|
|
poly_start,
|
|
poly_start + poly_size - 1,
|
|
totloop - 1);
|
|
sp->invalid = true;
|
|
}
|
|
else {
|
|
/* Poly itself is valid, for now. */
|
|
int v1, v2; /* v1 is prev loop vert idx, v2 is current loop one. */
|
|
sp->invalid = false;
|
|
sp->verts = v = (int *)MEM_mallocN(sizeof(int) * poly_size, "Vert idx of SortPoly");
|
|
sp->numverts = poly_size;
|
|
sp->loopstart = poly_start;
|
|
|
|
/* Ideally we would only have to do that once on all vertices
|
|
* before we start checking each face, but several faces can use same vert,
|
|
* so we have to ensure here all verts of current face are cleared. */
|
|
for (j = 0; j < poly_size; j++) {
|
|
const int vert = corner_verts[sp->loopstart + j];
|
|
if (vert < totvert) {
|
|
BLI_BITMAP_DISABLE(vert_tag, vert);
|
|
}
|
|
}
|
|
|
|
/* Test all face's loops' vert idx. */
|
|
for (j = 0; j < poly_size; j++, v++) {
|
|
const int vert = corner_verts[sp->loopstart + j];
|
|
if (vert >= totvert) {
|
|
/* Invalid vert idx. */
|
|
PRINT_ERR("\tLoop %u has invalid vert reference (%d)", sp->loopstart + j, vert);
|
|
sp->invalid = true;
|
|
}
|
|
else if (BLI_BITMAP_TEST(vert_tag, vert)) {
|
|
PRINT_ERR("\tPoly %u has duplicated vert reference at corner (%u)", uint(i), j);
|
|
sp->invalid = true;
|
|
}
|
|
else {
|
|
BLI_BITMAP_ENABLE(vert_tag, vert);
|
|
}
|
|
*v = vert;
|
|
}
|
|
|
|
if (sp->invalid) {
|
|
sp++;
|
|
continue;
|
|
}
|
|
|
|
/* Test all face's loops. */
|
|
for (j = 0; j < poly_size; j++) {
|
|
const int corner = sp->loopstart + j;
|
|
const int vert = corner_verts[corner];
|
|
const int edge_i = corner_edges[corner];
|
|
v1 = vert;
|
|
v2 = corner_verts[sp->loopstart + (j + 1) % poly_size];
|
|
if (!edge_hash.contains({v1, v2})) {
|
|
/* Edge not existing. */
|
|
PRINT_ERR("\tPoly %u needs missing edge (%d, %d)", sp->index, v1, v2);
|
|
if (do_fixes) {
|
|
recalc_flag.edges = true;
|
|
}
|
|
else {
|
|
sp->invalid = true;
|
|
}
|
|
}
|
|
else if (edge_i >= totedge) {
|
|
/* Invalid edge idx.
|
|
* We already know from previous text that a valid edge exists, use it (if allowed)! */
|
|
if (do_fixes) {
|
|
int prev_e = edge_i;
|
|
corner_edges[corner] = edge_hash.lookup({v1, v2});
|
|
fix_flag.loops_edge = true;
|
|
PRINT_ERR("\tLoop %d has invalid edge reference (%d), fixed using edge %d",
|
|
corner,
|
|
prev_e,
|
|
corner_edges[corner]);
|
|
}
|
|
else {
|
|
PRINT_ERR("\tLoop %d has invalid edge reference (%d)", corner, edge_i);
|
|
sp->invalid = true;
|
|
}
|
|
}
|
|
else {
|
|
const blender::int2 &edge = edges[edge_i];
|
|
if (IS_REMOVED_EDGE(edge) ||
|
|
!((edge[0] == v1 && edge[1] == v2) || (edge[0] == v2 && edge[1] == v1)))
|
|
{
|
|
/* The pointed edge is invalid (tagged as removed, or vert idx mismatch),
|
|
* and we already know from previous test that a valid one exists,
|
|
* use it (if allowed)! */
|
|
if (do_fixes) {
|
|
int prev_e = edge_i;
|
|
corner_edges[corner] = edge_hash.lookup({v1, v2});
|
|
fix_flag.loops_edge = true;
|
|
PRINT_ERR(
|
|
"\tPoly %u has invalid edge reference (%d, is_removed: %d), fixed using edge "
|
|
"%d",
|
|
sp->index,
|
|
prev_e,
|
|
IS_REMOVED_EDGE(edge),
|
|
corner_edges[corner]);
|
|
}
|
|
else {
|
|
PRINT_ERR("\tPoly %u has invalid edge reference (%d)", sp->index, edge_i);
|
|
sp->invalid = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!sp->invalid) {
|
|
/* Needed for checking faces using same verts below. */
|
|
qsort(sp->verts, sp->numverts, sizeof(int), int_cmp);
|
|
}
|
|
}
|
|
sp++;
|
|
}
|
|
|
|
MEM_freeN(vert_tag);
|
|
|
|
/* Second check pass, testing faces using the same verts. */
|
|
qsort(sort_polys, faces_num, sizeof(SortPoly), search_poly_cmp);
|
|
sp = prev_sp = sort_polys;
|
|
sp++;
|
|
|
|
for (i = 1; i < faces_num; i++, sp++) {
|
|
int p1_nv = sp->numverts, p2_nv = prev_sp->numverts;
|
|
const int *p1_v = sp->verts, *p2_v = prev_sp->verts;
|
|
|
|
if (sp->invalid) {
|
|
/* Break, because all known invalid faces have been put at the end
|
|
* by qsort with search_poly_cmp. */
|
|
break;
|
|
}
|
|
|
|
/* Test same faces. */
|
|
if ((p1_nv == p2_nv) && (memcmp(p1_v, p2_v, p1_nv * sizeof(*p1_v)) == 0)) {
|
|
if (do_verbose) {
|
|
/* TODO: convert list to string */
|
|
PRINT_ERR("\tPolys %u and %u use same vertices (%d", prev_sp->index, sp->index, *p1_v);
|
|
for (j = 1; j < p1_nv; j++) {
|
|
PRINT_ERR(", %d", p1_v[j]);
|
|
}
|
|
PRINT_ERR("), considering face %u as invalid.", sp->index);
|
|
}
|
|
else {
|
|
is_valid = false;
|
|
}
|
|
sp->invalid = true;
|
|
}
|
|
else {
|
|
prev_sp = sp;
|
|
}
|
|
}
|
|
|
|
/* Third check pass, testing loops used by none or more than one face. */
|
|
qsort(sort_polys, faces_num, sizeof(SortPoly), search_polyloop_cmp);
|
|
sp = sort_polys;
|
|
prev_sp = nullptr;
|
|
prev_end = 0;
|
|
for (i = 0; i < faces_num; i++, sp++) {
|
|
/* Free this now, we don't need it anymore, and avoid us another loop! */
|
|
if (sp->verts) {
|
|
MEM_freeN(sp->verts);
|
|
}
|
|
|
|
/* Note above prev_sp: in following code, we make sure it is always valid face (or nullptr).
|
|
*/
|
|
if (sp->invalid) {
|
|
if (do_fixes) {
|
|
faces_to_remove[sp->index].set();
|
|
free_flag.polyloops = do_fixes;
|
|
/* DO NOT REMOVE ITS LOOPS!!!
|
|
* As already invalid faces are at the end of the SortPoly list, the loops they
|
|
* were the only users have already been tagged as "to remove" during previous
|
|
* iterations, and we don't want to remove some loops that may be used by
|
|
* another valid face! */
|
|
}
|
|
}
|
|
/* Test loops users. */
|
|
else {
|
|
/* Unused loops. */
|
|
if (prev_end < sp->loopstart) {
|
|
int corner;
|
|
for (j = prev_end, corner = prev_end; j < sp->loopstart; j++, corner++) {
|
|
PRINT_ERR("\tLoop %u is unused.", j);
|
|
if (do_fixes) {
|
|
REMOVE_LOOP_TAG(corner);
|
|
}
|
|
}
|
|
prev_end = sp->loopstart + sp->numverts;
|
|
prev_sp = sp;
|
|
}
|
|
/* Multi-used loops. */
|
|
else if (prev_end > sp->loopstart) {
|
|
PRINT_ERR("\tPolys %u and %u share loops from %d to %d, considering face %u as invalid.",
|
|
prev_sp->index,
|
|
sp->index,
|
|
sp->loopstart,
|
|
prev_end,
|
|
sp->index);
|
|
if (do_fixes) {
|
|
faces_to_remove[sp->index].set();
|
|
free_flag.polyloops = do_fixes;
|
|
/* DO NOT REMOVE ITS LOOPS!!!
|
|
* They might be used by some next, valid face!
|
|
* Just not updating prev_end/prev_sp vars is enough to ensure the loops
|
|
* effectively no more needed will be marked as "to be removed"! */
|
|
}
|
|
}
|
|
else {
|
|
prev_end = sp->loopstart + sp->numverts;
|
|
prev_sp = sp;
|
|
}
|
|
}
|
|
}
|
|
/* We may have some remaining unused loops to get rid of! */
|
|
if (prev_end < totloop) {
|
|
int corner;
|
|
for (j = prev_end, corner = prev_end; j < totloop; j++, corner++) {
|
|
PRINT_ERR("\tLoop %u is unused.", j);
|
|
if (do_fixes) {
|
|
REMOVE_LOOP_TAG(corner);
|
|
}
|
|
}
|
|
}
|
|
|
|
MEM_freeN(sort_polys);
|
|
}
|
|
|
|
/* fix deform verts */
|
|
if (dverts) {
|
|
MDeformVert *dv;
|
|
for (i = 0, dv = dverts; i < totvert; i++, dv++) {
|
|
MDeformWeight *dw;
|
|
|
|
for (j = 0, dw = dv->dw; j < dv->totweight; j++, dw++) {
|
|
/* NOTE: greater than max defgroups is accounted for in our code, but not < 0. */
|
|
if (!isfinite(dw->weight)) {
|
|
PRINT_ERR("\tVertex deform %u, group %u has weight: %f", i, dw->def_nr, dw->weight);
|
|
if (do_fixes) {
|
|
dw->weight = 0.0f;
|
|
fix_flag.verts_weight = true;
|
|
}
|
|
}
|
|
else if (dw->weight < 0.0f || dw->weight > 1.0f) {
|
|
PRINT_ERR("\tVertex deform %u, group %u has weight: %f", i, dw->def_nr, dw->weight);
|
|
if (do_fixes) {
|
|
CLAMP(dw->weight, 0.0f, 1.0f);
|
|
fix_flag.verts_weight = true;
|
|
}
|
|
}
|
|
|
|
/* Not technically incorrect since this is unsigned, however,
|
|
* a value over INT_MAX is almost certainly caused by wrapping an uint. */
|
|
if (dw->def_nr >= INT_MAX) {
|
|
PRINT_ERR("\tVertex deform %u, has invalid group %u", i, dw->def_nr);
|
|
if (do_fixes) {
|
|
BKE_defvert_remove_group(dv, dw);
|
|
fix_flag.verts_weight = true;
|
|
|
|
if (dv->dw) {
|
|
/* re-allocated, the new values compensate for stepping
|
|
* within the for loop and may not be valid */
|
|
j--;
|
|
dw = dv->dw + j;
|
|
}
|
|
else { /* all freed */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef REMOVE_EDGE_TAG
|
|
#undef IS_REMOVED_EDGE
|
|
#undef REMOVE_LOOP_TAG
|
|
#undef REMOVE_POLY_TAG
|
|
|
|
if (mesh) {
|
|
if (free_flag.faces) {
|
|
BKE_mesh_strip_loose_faces(mesh);
|
|
}
|
|
|
|
if (free_flag.polyloops) {
|
|
strip_loose_facesloops(mesh, faces_to_remove);
|
|
}
|
|
|
|
if (free_flag.edges) {
|
|
mesh_strip_edges(mesh);
|
|
}
|
|
|
|
if (recalc_flag.edges) {
|
|
BKE_mesh_calc_edges(mesh, true, false);
|
|
}
|
|
}
|
|
|
|
if (mesh && mesh->mselect) {
|
|
MSelect *msel;
|
|
|
|
for (i = 0, msel = mesh->mselect; i < mesh->totselect; i++, msel++) {
|
|
int tot_elem = 0;
|
|
|
|
if (msel->index < 0) {
|
|
PRINT_ERR(
|
|
"\tMesh select element %u type %d index is negative, "
|
|
"resetting selection stack.\n",
|
|
i,
|
|
msel->type);
|
|
free_flag.mselect = do_fixes;
|
|
break;
|
|
}
|
|
|
|
switch (msel->type) {
|
|
case ME_VSEL:
|
|
tot_elem = mesh->totvert;
|
|
break;
|
|
case ME_ESEL:
|
|
tot_elem = mesh->totedge;
|
|
break;
|
|
case ME_FSEL:
|
|
tot_elem = mesh->faces_num;
|
|
break;
|
|
}
|
|
|
|
if (msel->index > tot_elem) {
|
|
PRINT_ERR(
|
|
"\tMesh select element %u type %d index %d is larger than data array size %d, "
|
|
"resetting selection stack.\n",
|
|
i,
|
|
msel->type,
|
|
msel->index,
|
|
tot_elem);
|
|
|
|
free_flag.mselect = do_fixes;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (free_flag.mselect) {
|
|
MEM_freeN(mesh->mselect);
|
|
mesh->mselect = nullptr;
|
|
mesh->totselect = 0;
|
|
}
|
|
}
|
|
|
|
material_indices_span.save();
|
|
material_indices.finish();
|
|
|
|
PRINT_MSG("%s: finished\n\n", __func__);
|
|
|
|
*r_changed = (fix_flag.as_flag || free_flag.as_flag || recalc_flag.as_flag);
|
|
|
|
BLI_assert((*r_changed == false) || (do_fixes == true));
|
|
|
|
return is_valid;
|
|
}
|
|
|
|
static bool mesh_validate_customdata(CustomData *data,
|
|
eCustomDataMask mask,
|
|
const uint totitems,
|
|
const bool do_verbose,
|
|
const bool do_fixes,
|
|
bool *r_change)
|
|
{
|
|
bool is_valid = true;
|
|
bool has_fixes = false;
|
|
int i = 0;
|
|
|
|
PRINT_MSG("%s: Checking %d CD layers...\n", __func__, data->totlayer);
|
|
|
|
/* Set dummy values so the layer-type is always initialized on first access. */
|
|
int layer_num = -1;
|
|
int layer_num_type = -1;
|
|
|
|
while (i < data->totlayer) {
|
|
CustomDataLayer *layer = &data->layers[i];
|
|
const eCustomDataType type = eCustomDataType(layer->type);
|
|
bool ok = true;
|
|
|
|
/* Count layers when the type changes. */
|
|
if (layer_num_type != type) {
|
|
layer_num = CustomData_number_of_layers(data, type);
|
|
layer_num_type = type;
|
|
}
|
|
|
|
/* Validate active index, for a time this could be set to a negative value, see: #105860. */
|
|
int *active_index_array[] = {
|
|
&layer->active,
|
|
&layer->active_rnd,
|
|
&layer->active_clone,
|
|
&layer->active_mask,
|
|
};
|
|
for (int *active_index : Span(active_index_array, ARRAY_SIZE(active_index_array))) {
|
|
if (*active_index < 0) {
|
|
PRINT_ERR("\tCustomDataLayer type %d has a negative active index (%d)\n",
|
|
layer->type,
|
|
*active_index);
|
|
if (do_fixes) {
|
|
*active_index = 0;
|
|
has_fixes = true;
|
|
}
|
|
}
|
|
else {
|
|
if (*active_index >= layer_num) {
|
|
PRINT_ERR("\tCustomDataLayer type %d has an out of bounds active index (%d >= %d)\n",
|
|
layer->type,
|
|
*active_index,
|
|
layer_num);
|
|
if (do_fixes) {
|
|
BLI_assert(layer_num > 0);
|
|
*active_index = layer_num - 1;
|
|
has_fixes = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (CustomData_layertype_is_singleton(type)) {
|
|
if (layer_num > 1) {
|
|
PRINT_ERR("\tCustomDataLayer type %d is a singleton, found %d in Mesh structure\n",
|
|
type,
|
|
layer_num);
|
|
ok = false;
|
|
}
|
|
}
|
|
|
|
if (mask != 0) {
|
|
eCustomDataMask layer_typemask = CD_TYPE_AS_MASK(type);
|
|
if ((layer_typemask & mask) == 0) {
|
|
PRINT_ERR("\tCustomDataLayer type %d which isn't in the mask\n", type);
|
|
ok = false;
|
|
}
|
|
}
|
|
|
|
if (ok == false) {
|
|
if (do_fixes) {
|
|
CustomData_free_layer(data, type, 0, i);
|
|
has_fixes = true;
|
|
}
|
|
}
|
|
|
|
if (ok) {
|
|
if (CustomData_layer_validate(layer, totitems, do_fixes)) {
|
|
PRINT_ERR("\tCustomDataLayer type %d has some invalid data\n", type);
|
|
has_fixes = do_fixes;
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
|
|
PRINT_MSG("%s: Finished (is_valid=%d)\n\n", __func__, int(!has_fixes));
|
|
|
|
*r_change = has_fixes;
|
|
|
|
return is_valid;
|
|
}
|
|
|
|
bool BKE_mesh_validate_all_customdata(CustomData *vert_data,
|
|
const uint totvert,
|
|
CustomData *edge_data,
|
|
const uint totedge,
|
|
CustomData *loop_data,
|
|
const uint totloop,
|
|
CustomData *face_data,
|
|
const uint faces_num,
|
|
const bool check_meshmask,
|
|
const bool do_verbose,
|
|
const bool do_fixes,
|
|
bool *r_change)
|
|
{
|
|
bool is_valid = true;
|
|
bool is_change_v, is_change_e, is_change_l, is_change_p;
|
|
CustomData_MeshMasks mask = {0};
|
|
if (check_meshmask) {
|
|
mask = CD_MASK_MESH;
|
|
}
|
|
|
|
is_valid &= mesh_validate_customdata(
|
|
vert_data, mask.vmask, totvert, do_verbose, do_fixes, &is_change_v);
|
|
is_valid &= mesh_validate_customdata(
|
|
edge_data, mask.emask, totedge, do_verbose, do_fixes, &is_change_e);
|
|
is_valid &= mesh_validate_customdata(
|
|
loop_data, mask.lmask, totloop, do_verbose, do_fixes, &is_change_l);
|
|
is_valid &= mesh_validate_customdata(
|
|
face_data, mask.pmask, faces_num, do_verbose, do_fixes, &is_change_p);
|
|
|
|
const int tot_uvloop = CustomData_number_of_layers(loop_data, CD_PROP_FLOAT2);
|
|
if (tot_uvloop > MAX_MTFACE) {
|
|
PRINT_ERR(
|
|
"\tMore UV layers than %d allowed, %d last ones won't be available for render, shaders, "
|
|
"etc.\n",
|
|
MAX_MTFACE,
|
|
tot_uvloop - MAX_MTFACE);
|
|
}
|
|
|
|
/* check indices of clone/stencil */
|
|
if (do_fixes && CustomData_get_clone_layer(loop_data, CD_PROP_FLOAT2) >= tot_uvloop) {
|
|
CustomData_set_layer_clone(loop_data, CD_PROP_FLOAT2, 0);
|
|
is_change_l = true;
|
|
}
|
|
if (do_fixes && CustomData_get_stencil_layer(loop_data, CD_PROP_FLOAT2) >= tot_uvloop) {
|
|
CustomData_set_layer_stencil(loop_data, CD_PROP_FLOAT2, 0);
|
|
is_change_l = true;
|
|
}
|
|
|
|
*r_change = (is_change_v || is_change_e || is_change_l || is_change_p);
|
|
|
|
return is_valid;
|
|
}
|
|
|
|
bool BKE_mesh_validate(Mesh *me, const bool do_verbose, const bool cddata_check_mask)
|
|
{
|
|
bool changed;
|
|
|
|
if (do_verbose) {
|
|
CLOG_INFO(&LOG, 0, "MESH: %s", me->id.name + 2);
|
|
}
|
|
|
|
BKE_mesh_validate_all_customdata(&me->vert_data,
|
|
me->totvert,
|
|
&me->edge_data,
|
|
me->totedge,
|
|
&me->loop_data,
|
|
me->totloop,
|
|
&me->face_data,
|
|
me->faces_num,
|
|
cddata_check_mask,
|
|
do_verbose,
|
|
true,
|
|
&changed);
|
|
MutableSpan<float3> positions = me->vert_positions_for_write();
|
|
MutableSpan<blender::int2> edges = me->edges_for_write();
|
|
MutableSpan<int> face_offsets = me->face_offsets_for_write();
|
|
MutableSpan<int> corner_verts = me->corner_verts_for_write();
|
|
MutableSpan<int> corner_edges = me->corner_edges_for_write();
|
|
|
|
BKE_mesh_validate_arrays(
|
|
me,
|
|
reinterpret_cast<float(*)[3]>(positions.data()),
|
|
positions.size(),
|
|
edges.data(),
|
|
edges.size(),
|
|
(MFace *)CustomData_get_layer_for_write(&me->fdata_legacy, CD_MFACE, me->totface_legacy),
|
|
me->totface_legacy,
|
|
corner_verts.data(),
|
|
corner_edges.data(),
|
|
corner_verts.size(),
|
|
face_offsets.data(),
|
|
me->faces_num,
|
|
me->deform_verts_for_write().data(),
|
|
do_verbose,
|
|
true,
|
|
&changed);
|
|
|
|
if (changed) {
|
|
DEG_id_tag_update(&me->id, ID_RECALC_GEOMETRY_ALL_MODES);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool BKE_mesh_is_valid(Mesh *me)
|
|
{
|
|
const bool do_verbose = true;
|
|
const bool do_fixes = false;
|
|
|
|
bool is_valid = true;
|
|
bool changed = true;
|
|
|
|
is_valid &= BKE_mesh_validate_all_customdata(
|
|
&me->vert_data,
|
|
me->totvert,
|
|
&me->edge_data,
|
|
me->totedge,
|
|
&me->loop_data,
|
|
me->totloop,
|
|
&me->face_data,
|
|
me->faces_num,
|
|
false, /* setting mask here isn't useful, gives false positives */
|
|
do_verbose,
|
|
do_fixes,
|
|
&changed);
|
|
|
|
MutableSpan<float3> positions = me->vert_positions_for_write();
|
|
MutableSpan<blender::int2> edges = me->edges_for_write();
|
|
MutableSpan<int> face_offsets = me->face_offsets_for_write();
|
|
MutableSpan<int> corner_verts = me->corner_verts_for_write();
|
|
MutableSpan<int> corner_edges = me->corner_edges_for_write();
|
|
|
|
is_valid &= BKE_mesh_validate_arrays(
|
|
me,
|
|
reinterpret_cast<float(*)[3]>(positions.data()),
|
|
positions.size(),
|
|
edges.data(),
|
|
edges.size(),
|
|
(MFace *)CustomData_get_layer_for_write(&me->fdata_legacy, CD_MFACE, me->totface_legacy),
|
|
me->totface_legacy,
|
|
corner_verts.data(),
|
|
corner_edges.data(),
|
|
corner_verts.size(),
|
|
face_offsets.data(),
|
|
me->faces_num,
|
|
me->deform_verts_for_write().data(),
|
|
do_verbose,
|
|
do_fixes,
|
|
&changed);
|
|
|
|
BLI_assert(changed == false);
|
|
|
|
return is_valid;
|
|
}
|
|
|
|
bool BKE_mesh_validate_material_indices(Mesh *me)
|
|
{
|
|
const int mat_nr_max = max_ii(0, me->totcol - 1);
|
|
bool is_valid = true;
|
|
|
|
blender::bke::AttributeWriter<int> material_indices =
|
|
me->attributes_for_write().lookup_for_write<int>("material_index");
|
|
blender::MutableVArraySpan<int> material_indices_span(material_indices.varray);
|
|
for (const int i : material_indices_span.index_range()) {
|
|
if (material_indices_span[i] < 0 || material_indices_span[i] > mat_nr_max) {
|
|
material_indices_span[i] = 0;
|
|
is_valid = false;
|
|
}
|
|
}
|
|
material_indices_span.save();
|
|
material_indices.finish();
|
|
|
|
if (!is_valid) {
|
|
DEG_id_tag_update(&me->id, ID_RECALC_GEOMETRY_ALL_MODES);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Mesh Stripping (removing invalid data)
|
|
* \{ */
|
|
|
|
void strip_loose_facesloops(Mesh *me, blender::BitSpan faces_to_remove)
|
|
{
|
|
MutableSpan<int> face_offsets = me->face_offsets_for_write();
|
|
MutableSpan<int> corner_edges = me->corner_edges_for_write();
|
|
|
|
int a, b;
|
|
/* New loops idx! */
|
|
int *new_idx = (int *)MEM_mallocN(sizeof(int) * me->totloop, __func__);
|
|
|
|
for (a = b = 0; a < me->faces_num; a++) {
|
|
bool invalid = false;
|
|
int start = face_offsets[a];
|
|
int size = face_offsets[a + 1] - start;
|
|
int stop = start + size;
|
|
|
|
if (faces_to_remove[a]) {
|
|
invalid = true;
|
|
}
|
|
else if (stop > me->totloop || stop < start || size < 0) {
|
|
invalid = true;
|
|
}
|
|
else {
|
|
/* If one of the face's loops is invalid, the whole face is invalid! */
|
|
if (corner_edges.slice(start, size).as_span().contains(INVALID_LOOP_EDGE_MARKER)) {
|
|
invalid = true;
|
|
}
|
|
}
|
|
|
|
if (size >= 3 && !invalid) {
|
|
if (a != b) {
|
|
face_offsets[b] = face_offsets[a];
|
|
CustomData_copy_data(&me->face_data, &me->face_data, a, b, 1);
|
|
}
|
|
b++;
|
|
}
|
|
}
|
|
if (a != b) {
|
|
CustomData_free_elem(&me->face_data, b, a - b);
|
|
me->faces_num = b;
|
|
}
|
|
|
|
/* And now, get rid of invalid loops. */
|
|
int corner = 0;
|
|
for (a = b = 0; a < me->totloop; a++, corner++) {
|
|
if (corner_edges[corner] != INVALID_LOOP_EDGE_MARKER) {
|
|
if (a != b) {
|
|
CustomData_copy_data(&me->loop_data, &me->loop_data, a, b, 1);
|
|
}
|
|
new_idx[a] = b;
|
|
b++;
|
|
}
|
|
else {
|
|
/* XXX Theoretically, we should be able to not do this, as no remaining face
|
|
* should use any stripped loop. But for security's sake... */
|
|
new_idx[a] = -a;
|
|
}
|
|
}
|
|
if (a != b) {
|
|
CustomData_free_elem(&me->loop_data, b, a - b);
|
|
me->totloop = b;
|
|
}
|
|
|
|
face_offsets[me->faces_num] = me->totloop;
|
|
|
|
/* And now, update faces' start loop index. */
|
|
/* NOTE: At this point, there should never be any face using a striped loop! */
|
|
for (const int i : blender::IndexRange(me->faces_num)) {
|
|
face_offsets[i] = new_idx[face_offsets[i]];
|
|
BLI_assert(face_offsets[i] >= 0);
|
|
}
|
|
|
|
MEM_freeN(new_idx);
|
|
}
|
|
|
|
void mesh_strip_edges(Mesh *me)
|
|
{
|
|
blender::int2 *e;
|
|
int a, b;
|
|
uint *new_idx = (uint *)MEM_mallocN(sizeof(int) * me->totedge, __func__);
|
|
MutableSpan<blender::int2> edges = me->edges_for_write();
|
|
|
|
for (a = b = 0, e = edges.data(); a < me->totedge; a++, e++) {
|
|
if ((*e)[0] != (*e)[1]) {
|
|
if (a != b) {
|
|
memcpy(&edges[b], e, sizeof(edges[b]));
|
|
CustomData_copy_data(&me->edge_data, &me->edge_data, a, b, 1);
|
|
}
|
|
new_idx[a] = b;
|
|
b++;
|
|
}
|
|
else {
|
|
new_idx[a] = INVALID_LOOP_EDGE_MARKER;
|
|
}
|
|
}
|
|
if (a != b) {
|
|
CustomData_free_elem(&me->edge_data, b, a - b);
|
|
me->totedge = b;
|
|
}
|
|
|
|
/* And now, update loops' edge indices. */
|
|
/* XXX We hope no loop was pointing to a striped edge!
|
|
* Else, its e will be set to INVALID_LOOP_EDGE_MARKER :/ */
|
|
MutableSpan<int> corner_edges = me->corner_edges_for_write();
|
|
for (const int i : corner_edges.index_range()) {
|
|
corner_edges[i] = new_idx[corner_edges[i]];
|
|
}
|
|
|
|
MEM_freeN(new_idx);
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Mesh Edge Calculation
|
|
* \{ */
|
|
|
|
void BKE_mesh_calc_edges_tessface(Mesh *mesh)
|
|
{
|
|
const int numFaces = mesh->totface_legacy;
|
|
blender::VectorSet<blender::OrderedEdge> eh;
|
|
eh.reserve(numFaces);
|
|
MFace *mfaces = (MFace *)CustomData_get_layer_for_write(
|
|
&mesh->fdata_legacy, CD_MFACE, mesh->totface_legacy);
|
|
|
|
MFace *mf = mfaces;
|
|
for (int i = 0; i < numFaces; i++, mf++) {
|
|
eh.add({mf->v1, mf->v2});
|
|
eh.add({mf->v2, mf->v3});
|
|
|
|
if (mf->v4) {
|
|
eh.add({mf->v3, mf->v4});
|
|
eh.add({mf->v4, mf->v1});
|
|
}
|
|
else {
|
|
eh.add({mf->v3, mf->v1});
|
|
}
|
|
}
|
|
|
|
const int numEdges = eh.size();
|
|
|
|
/* write new edges into a temporary CustomData */
|
|
CustomData edgeData;
|
|
CustomData_reset(&edgeData);
|
|
CustomData_add_layer_named(&edgeData, CD_PROP_INT32_2D, CD_CONSTRUCT, numEdges, ".edge_verts");
|
|
CustomData_add_layer(&edgeData, CD_ORIGINDEX, CD_SET_DEFAULT, numEdges);
|
|
|
|
blender::int2 *ege = (blender::int2 *)CustomData_get_layer_named_for_write(
|
|
&edgeData, CD_PROP_INT32_2D, ".edge_verts", mesh->totedge);
|
|
int *index = (int *)CustomData_get_layer_for_write(&edgeData, CD_ORIGINDEX, mesh->totedge);
|
|
|
|
memset(index, ORIGINDEX_NONE, sizeof(int) * numEdges);
|
|
MutableSpan(ege, numEdges).copy_from(eh.as_span().cast<blender::int2>());
|
|
|
|
/* free old CustomData and assign new one */
|
|
CustomData_free(&mesh->edge_data, mesh->totedge);
|
|
mesh->edge_data = edgeData;
|
|
mesh->totedge = numEdges;
|
|
}
|
|
|
|
/** \} */
|