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blender-archive/source/blender/editors/mesh/editface.cc
2023-02-26 11:55:22 +13:00

836 lines
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C++

/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup edmesh
*/
#include "MEM_guardedalloc.h"
#include "BLI_atomic_disjoint_set.hh"
#include "BLI_bitmap.h"
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_task.hh"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "BKE_attribute.hh"
#include "BKE_context.h"
#include "BKE_customdata.h"
#include "BKE_global.h"
#include "BKE_mesh.h"
#include "BKE_object.h"
#include "ED_mesh.h"
#include "ED_screen.h"
#include "ED_select_utils.h"
#include "ED_view3d.h"
#include "WM_api.h"
#include "WM_types.h"
#include "DEG_depsgraph.h"
#include "DEG_depsgraph_query.h"
/* own include */
void paintface_flush_flags(bContext *C,
Object *ob,
const bool flush_selection,
const bool flush_hidden)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
const int *index_array = nullptr;
BLI_assert(flush_selection || flush_hidden);
if (me == nullptr) {
return;
}
/* NOTE: call #BKE_mesh_flush_hidden_from_verts_ex first when changing hidden flags. */
/* we could call this directly in all areas that change selection,
* since this could become slow for realtime updates (circle-select for eg) */
if (flush_selection) {
BKE_mesh_flush_select_from_polys(me);
}
Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
if (ob_eval == nullptr) {
return;
}
bke::AttributeAccessor attributes_me = me->attributes();
Mesh *me_orig = (Mesh *)ob_eval->runtime.data_orig;
bke::MutableAttributeAccessor attributes_orig = me_orig->attributes_for_write();
Mesh *me_eval = (Mesh *)ob_eval->runtime.data_eval;
bke::MutableAttributeAccessor attributes_eval = me_eval->attributes_for_write();
bool updated = false;
if (me_orig != nullptr && me_eval != nullptr && me_orig->totpoly == me->totpoly) {
/* Update the COW copy of the mesh. */
if (flush_hidden) {
const VArray<bool> hide_poly_me = attributes_me.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
bke::SpanAttributeWriter<bool> hide_poly_orig =
attributes_orig.lookup_or_add_for_write_only_span<bool>(".hide_poly", ATTR_DOMAIN_FACE);
hide_poly_me.materialize(hide_poly_orig.span);
hide_poly_orig.finish();
}
if (flush_selection) {
const VArray<bool> select_poly_me = attributes_me.lookup_or_default<bool>(
".select_poly", ATTR_DOMAIN_FACE, false);
bke::SpanAttributeWriter<bool> select_poly_orig =
attributes_orig.lookup_or_add_for_write_only_span<bool>(".select_poly",
ATTR_DOMAIN_FACE);
select_poly_me.materialize(select_poly_orig.span);
select_poly_orig.finish();
}
/* Mesh polys => Final derived polys */
if ((index_array = (const int *)CustomData_get_layer(&me_eval->pdata, CD_ORIGINDEX))) {
if (flush_hidden) {
const VArray<bool> hide_poly_orig = attributes_orig.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
bke::SpanAttributeWriter<bool> hide_poly_eval =
attributes_eval.lookup_or_add_for_write_only_span<bool>(".hide_poly",
ATTR_DOMAIN_FACE);
for (const int i : IndexRange(me_eval->totpoly)) {
const int orig_poly_index = index_array[i];
if (orig_poly_index != ORIGINDEX_NONE) {
hide_poly_eval.span[i] = hide_poly_orig[orig_poly_index];
}
}
hide_poly_eval.finish();
}
if (flush_selection) {
const VArray<bool> select_poly_orig = attributes_orig.lookup_or_default<bool>(
".select_poly", ATTR_DOMAIN_FACE, false);
bke::SpanAttributeWriter<bool> select_poly_eval =
attributes_eval.lookup_or_add_for_write_only_span<bool>(".select_poly",
ATTR_DOMAIN_FACE);
for (const int i : IndexRange(me_eval->totpoly)) {
const int orig_poly_index = index_array[i];
if (orig_poly_index != ORIGINDEX_NONE) {
select_poly_eval.span[i] = select_poly_orig[orig_poly_index];
}
}
select_poly_eval.finish();
}
updated = true;
}
}
if (updated) {
if (flush_hidden) {
BKE_mesh_batch_cache_dirty_tag(me_eval, BKE_MESH_BATCH_DIRTY_ALL);
}
else {
BKE_mesh_batch_cache_dirty_tag(me_eval, BKE_MESH_BATCH_DIRTY_SELECT_PAINT);
}
DEG_id_tag_update(static_cast<ID *>(ob->data), ID_RECALC_SELECT);
}
else {
DEG_id_tag_update(static_cast<ID *>(ob->data), ID_RECALC_COPY_ON_WRITE | ID_RECALC_SELECT);
}
WM_event_add_notifier(C, NC_GEOM | ND_SELECT, ob->data);
}
void paintface_hide(bContext *C, Object *ob, const bool unselected)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr || me->totpoly == 0) {
return;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
bke::SpanAttributeWriter<bool> hide_poly = attributes.lookup_or_add_for_write_span<bool>(
".hide_poly", ATTR_DOMAIN_FACE);
bke::SpanAttributeWriter<bool> select_poly = attributes.lookup_or_add_for_write_span<bool>(
".select_poly", ATTR_DOMAIN_FACE);
for (int i = 0; i < me->totpoly; i++) {
if (!hide_poly.span[i]) {
if (!select_poly.span[i] == unselected) {
hide_poly.span[i] = true;
}
}
if (hide_poly.span[i]) {
select_poly.span[i] = false;
}
}
hide_poly.finish();
select_poly.finish();
BKE_mesh_flush_hidden_from_polys(me);
paintface_flush_flags(C, ob, true, true);
}
void paintface_reveal(bContext *C, Object *ob, const bool select)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr || me->totpoly == 0) {
return;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
if (select) {
const VArray<bool> hide_poly = attributes.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
bke::SpanAttributeWriter<bool> select_poly = attributes.lookup_or_add_for_write_span<bool>(
".select_poly", ATTR_DOMAIN_FACE);
for (const int i : hide_poly.index_range()) {
if (hide_poly[i]) {
select_poly.span[i] = true;
}
}
select_poly.finish();
}
attributes.remove(".hide_poly");
BKE_mesh_flush_hidden_from_polys(me);
paintface_flush_flags(C, ob, true, true);
}
/**
* Join all edges of each poly in the AtomicDisjointSet. This can be used to find out which polys
* are connected to each other.
* \param islands Is expected to be of length mesh->totedge.
* \param skip_seams Polys separated by a seam will be treated as not connected.
*/
static void build_poly_connections(blender::AtomicDisjointSet &islands,
Mesh &mesh,
const bool skip_seams = true)
{
using namespace blender;
const Span<MPoly> polys = mesh.polys();
const Span<MEdge> edges = mesh.edges();
const Span<MLoop> loops = mesh.loops();
bke::MutableAttributeAccessor attributes = mesh.attributes_for_write();
const VArray<bool> hide_poly = attributes.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
/* Polys are connected if they share edges. By connecting all edges of a loop (as long as they
* are not a seam) we can find connected faces. */
threading::parallel_for(polys.index_range(), 1024, [&](const IndexRange range) {
for (const int poly_index : range) {
if (hide_poly[poly_index]) {
continue;
}
const MPoly &poly = polys[poly_index];
const Span<MLoop> poly_loops = loops.slice(poly.loopstart, poly.totloop);
for (const int poly_loop_index : poly_loops.index_range()) {
const MLoop &outer_mloop = poly_loops[poly_loop_index];
if (skip_seams && (edges[outer_mloop.e].flag & ME_SEAM) != 0) {
continue;
}
for (const MLoop &inner_mloop :
poly_loops.slice(poly_loop_index, poly_loops.size() - poly_loop_index)) {
if (&outer_mloop == &inner_mloop) {
continue;
}
if (skip_seams && (edges[inner_mloop.e].flag & ME_SEAM) != 0) {
continue;
}
islands.join(inner_mloop.e, outer_mloop.e);
}
}
}
});
}
/* Select faces connected to the given face_indices. Seams are treated as separation. */
static void paintface_select_linked_faces(Mesh &mesh,
const blender::Span<int> face_indices,
const bool select)
{
using namespace blender;
AtomicDisjointSet islands(mesh.totedge);
build_poly_connections(islands, mesh);
const Span<MPoly> polys = mesh.polys();
const Span<MEdge> edges = mesh.edges();
const Span<MLoop> loops = mesh.loops();
bke::MutableAttributeAccessor attributes = mesh.attributes_for_write();
bke::SpanAttributeWriter<bool> select_poly = attributes.lookup_or_add_for_write_span<bool>(
".select_poly", ATTR_DOMAIN_FACE);
Set<int> selected_roots;
for (const int i : face_indices) {
const MPoly &poly = polys[i];
for (const MLoop &loop : loops.slice(poly.loopstart, poly.totloop)) {
if ((edges[loop.e].flag & ME_SEAM) != 0) {
continue;
}
const int root = islands.find_root(loop.e);
selected_roots.add(root);
}
}
threading::parallel_for(select_poly.span.index_range(), 1024, [&](const IndexRange range) {
for (const int poly_index : range) {
const MPoly &poly = polys[poly_index];
for (const MLoop &loop : loops.slice(poly.loopstart, poly.totloop)) {
const int root = islands.find_root(loop.e);
if (selected_roots.contains(root)) {
select_poly.span[poly_index] = select;
break;
}
}
}
});
select_poly.finish();
}
void paintface_select_linked(bContext *C, Object *ob, const int mval[2], const bool select)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr || me->totpoly == 0) {
return;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
bke::SpanAttributeWriter<bool> select_poly = attributes.lookup_or_add_for_write_span<bool>(
".select_poly", ATTR_DOMAIN_FACE);
Vector<int> indices;
if (mval) {
uint index = uint(-1);
if (!ED_mesh_pick_face(C, ob, mval, ED_MESH_PICK_DEFAULT_FACE_DIST, &index)) {
select_poly.finish();
return;
}
/* Since paintface_select_linked_faces might not select the face under the cursor, select it
* here. */
select_poly.span[index] = true;
indices.append(index);
}
else {
for (const int i : select_poly.span.index_range()) {
if (!select_poly.span[i]) {
continue;
}
indices.append(i);
}
}
select_poly.finish();
paintface_select_linked_faces(*me, indices, select);
paintface_flush_flags(C, ob, true, false);
}
bool paintface_deselect_all_visible(bContext *C, Object *ob, int action, bool flush_flags)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr) {
return false;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
const VArray<bool> hide_poly = attributes.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
bke::SpanAttributeWriter<bool> select_poly = attributes.lookup_or_add_for_write_span<bool>(
".select_poly", ATTR_DOMAIN_FACE);
if (action == SEL_TOGGLE) {
action = SEL_SELECT;
for (int i = 0; i < me->totpoly; i++) {
if (!hide_poly[i] && select_poly.span[i]) {
action = SEL_DESELECT;
break;
}
}
}
bool changed = false;
for (int i = 0; i < me->totpoly; i++) {
if (hide_poly[i]) {
continue;
}
const bool old_selection = select_poly.span[i];
switch (action) {
case SEL_SELECT:
select_poly.span[i] = true;
break;
case SEL_DESELECT:
select_poly.span[i] = false;
break;
case SEL_INVERT:
select_poly.span[i] = !select_poly.span[i];
changed = true;
break;
}
if (old_selection != select_poly.span[i]) {
changed = true;
}
}
select_poly.finish();
if (changed) {
if (flush_flags) {
paintface_flush_flags(C, ob, true, false);
}
}
return changed;
}
bool paintface_minmax(Object *ob, float r_min[3], float r_max[3])
{
using namespace blender;
bool ok = false;
float vec[3], bmat[3][3];
const Mesh *me = BKE_mesh_from_object(ob);
if (!me || !CustomData_has_layer(&me->ldata, CD_PROP_FLOAT2)) {
return ok;
}
copy_m3_m4(bmat, ob->object_to_world);
const Span<float3> positions = me->vert_positions();
const Span<MPoly> polys = me->polys();
const Span<MLoop> loops = me->loops();
bke::AttributeAccessor attributes = me->attributes();
const VArray<bool> hide_poly = attributes.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
const VArray<bool> select_poly = attributes.lookup_or_default<bool>(
".select_poly", ATTR_DOMAIN_FACE, false);
for (int i = 0; i < me->totpoly; i++) {
if (hide_poly[i] || !select_poly[i]) {
continue;
}
const MPoly &poly = polys[i];
const MLoop *ml = &loops[poly.loopstart];
for (int b = 0; b < poly.totloop; b++, ml++) {
mul_v3_m3v3(vec, bmat, positions[ml->v]);
add_v3_v3v3(vec, vec, ob->object_to_world[3]);
minmax_v3v3_v3(r_min, r_max, vec);
}
ok = true;
}
return ok;
}
bool paintface_mouse_select(bContext *C,
const int mval[2],
const SelectPick_Params *params,
Object *ob)
{
using namespace blender;
uint index;
bool changed = false;
bool found = false;
/* Get the face under the cursor */
Mesh *me = BKE_mesh_from_object(ob);
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
const VArray<bool> hide_poly = attributes.lookup_or_default<bool>(
".hide_poly", ATTR_DOMAIN_FACE, false);
bke::AttributeWriter<bool> select_poly = attributes.lookup_or_add_for_write<bool>(
".select_poly", ATTR_DOMAIN_FACE);
if (ED_mesh_pick_face(C, ob, mval, ED_MESH_PICK_DEFAULT_FACE_DIST, &index)) {
if (index < me->totpoly) {
if (!hide_poly[index]) {
found = true;
}
}
}
if (params->sel_op == SEL_OP_SET) {
if ((found && params->select_passthrough) && select_poly.varray[index]) {
found = false;
}
else if (found || params->deselect_all) {
/* Deselect everything. */
changed |= paintface_deselect_all_visible(C, ob, SEL_DESELECT, false);
}
}
if (found) {
me->act_face = int(index);
switch (params->sel_op) {
case SEL_OP_SET:
case SEL_OP_ADD:
select_poly.varray.set(index, true);
break;
case SEL_OP_SUB:
select_poly.varray.set(index, false);
break;
case SEL_OP_XOR:
select_poly.varray.set(index, !select_poly.varray[index]);
break;
case SEL_OP_AND:
BLI_assert_unreachable(); /* Doesn't make sense for picking. */
break;
}
/* image window redraw */
paintface_flush_flags(C, ob, true, false);
ED_region_tag_redraw(CTX_wm_region(C)); /* XXX: should redraw all 3D views. */
changed = true;
}
return changed || found;
}
void paintvert_flush_flags(Object *ob)
{
using namespace blender;
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
Mesh *me_eval = BKE_object_get_evaluated_mesh(ob);
if (me == nullptr) {
return;
}
/* we could call this directly in all areas that change selection,
* since this could become slow for realtime updates (circle-select for eg) */
BKE_mesh_flush_select_from_verts(me);
if (me_eval == nullptr) {
return;
}
const bke::AttributeAccessor attributes_orig = me->attributes();
bke::MutableAttributeAccessor attributes_eval = me_eval->attributes_for_write();
const int *orig_indices = (const int *)CustomData_get_layer(&me_eval->vdata, CD_ORIGINDEX);
const VArray<bool> hide_vert_orig = attributes_orig.lookup_or_default<bool>(
".hide_vert", ATTR_DOMAIN_POINT, false);
bke::SpanAttributeWriter<bool> hide_vert_eval =
attributes_eval.lookup_or_add_for_write_only_span<bool>(".hide_vert", ATTR_DOMAIN_POINT);
if (orig_indices) {
for (const int i : hide_vert_eval.span.index_range()) {
if (orig_indices[i] != ORIGINDEX_NONE) {
hide_vert_eval.span[i] = hide_vert_orig[orig_indices[i]];
}
}
}
else {
hide_vert_orig.materialize(hide_vert_eval.span);
}
hide_vert_eval.finish();
const VArray<bool> select_vert_orig = attributes_orig.lookup_or_default<bool>(
".select_vert", ATTR_DOMAIN_POINT, false);
bke::SpanAttributeWriter<bool> select_vert_eval =
attributes_eval.lookup_or_add_for_write_only_span<bool>(".select_vert", ATTR_DOMAIN_POINT);
if (orig_indices) {
for (const int i : select_vert_eval.span.index_range()) {
if (orig_indices[i] != ORIGINDEX_NONE) {
select_vert_eval.span[i] = select_vert_orig[orig_indices[i]];
}
}
}
else {
select_vert_orig.materialize(select_vert_eval.span);
}
select_vert_eval.finish();
BKE_mesh_batch_cache_dirty_tag(me, BKE_MESH_BATCH_DIRTY_ALL);
}
static void paintvert_select_linked_vertices(bContext *C,
Object *ob,
const blender::Span<int> vertex_indices,
const bool select)
{
using namespace blender;
Mesh *mesh = BKE_mesh_from_object(ob);
if (mesh == nullptr || mesh->totpoly == 0) {
return;
}
/* AtomicDisjointSet is used to store connection information in vertex indices. */
AtomicDisjointSet islands(mesh->totvert);
const Span<MEdge> edges = mesh->edges();
/* By calling join() on the vertices of all edges, the AtomicDisjointSet contains information on
* which parts of the mesh are connected. */
threading::parallel_for(edges.index_range(), 1024, [&](const IndexRange range) {
for (const MEdge &edge : edges.slice(range)) {
islands.join(edge.v1, edge.v2);
}
});
bke::MutableAttributeAccessor attributes = mesh->attributes_for_write();
bke::SpanAttributeWriter<bool> select_vert = attributes.lookup_or_add_for_write_span<bool>(
".select_vert", ATTR_DOMAIN_POINT);
Set<int> selected_roots;
for (const int i : vertex_indices) {
const int root = islands.find_root(i);
selected_roots.add(root);
}
threading::parallel_for(select_vert.span.index_range(), 1024, [&](const IndexRange range) {
for (const int i : range) {
const int root = islands.find_root(i);
if (selected_roots.contains(root)) {
select_vert.span[i] = select;
}
}
});
select_vert.finish();
paintvert_flush_flags(ob);
paintvert_tag_select_update(C, ob);
}
void paintvert_select_linked_pick(bContext *C,
Object *ob,
const int region_coordinates[2],
const bool select)
{
uint index = uint(-1);
if (!ED_mesh_pick_vert(
C, ob, region_coordinates, ED_MESH_PICK_DEFAULT_VERT_DIST, true, &index)) {
return;
}
paintvert_select_linked_vertices(C, ob, {int(index)}, select);
}
void paintvert_select_linked(bContext *C, Object *ob)
{
Mesh *mesh = BKE_mesh_from_object(ob);
if (mesh == nullptr || mesh->totpoly == 0) {
return;
}
blender::bke::MutableAttributeAccessor attributes = mesh->attributes_for_write();
blender::bke::SpanAttributeWriter<bool> select_vert =
attributes.lookup_or_add_for_write_span<bool>(".select_vert", ATTR_DOMAIN_POINT);
blender::Vector<int> indices;
for (const int i : select_vert.span.index_range()) {
if (!select_vert.span[i]) {
continue;
}
indices.append(i);
}
select_vert.finish();
paintvert_select_linked_vertices(C, ob, indices, true);
}
void paintvert_tag_select_update(bContext *C, Object *ob)
{
DEG_id_tag_update(static_cast<ID *>(ob->data), ID_RECALC_COPY_ON_WRITE | ID_RECALC_SELECT);
WM_event_add_notifier(C, NC_GEOM | ND_SELECT, ob->data);
}
bool paintvert_deselect_all_visible(Object *ob, int action, bool flush_flags)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr) {
return false;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
const VArray<bool> hide_vert = attributes.lookup_or_default<bool>(
".hide_vert", ATTR_DOMAIN_POINT, false);
bke::SpanAttributeWriter<bool> select_vert = attributes.lookup_or_add_for_write_span<bool>(
".select_vert", ATTR_DOMAIN_POINT);
if (action == SEL_TOGGLE) {
action = SEL_SELECT;
for (int i = 0; i < me->totvert; i++) {
if (!hide_vert[i] && select_vert.span[i]) {
action = SEL_DESELECT;
break;
}
}
}
bool changed = false;
for (int i = 0; i < me->totvert; i++) {
if (hide_vert[i]) {
continue;
}
const bool old_selection = select_vert.span[i];
switch (action) {
case SEL_SELECT:
select_vert.span[i] = true;
break;
case SEL_DESELECT:
select_vert.span[i] = false;
break;
case SEL_INVERT:
select_vert.span[i] = !select_vert.span[i];
break;
}
if (old_selection != select_vert.span[i]) {
changed = true;
}
}
select_vert.finish();
if (changed) {
/* handle mselect */
if (action == SEL_SELECT) {
/* pass */
}
else if (ELEM(action, SEL_DESELECT, SEL_INVERT)) {
BKE_mesh_mselect_clear(me);
}
else {
BKE_mesh_mselect_validate(me);
}
if (flush_flags) {
paintvert_flush_flags(ob);
}
}
return changed;
}
void paintvert_select_ungrouped(Object *ob, bool extend, bool flush_flags)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr) {
return;
}
const Span<MDeformVert> dverts = me->deform_verts();
if (dverts.is_empty()) {
return;
}
if (!extend) {
paintvert_deselect_all_visible(ob, SEL_DESELECT, false);
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
const VArray<bool> hide_vert = attributes.lookup_or_default<bool>(
".hide_vert", ATTR_DOMAIN_POINT, false);
bke::SpanAttributeWriter<bool> select_vert = attributes.lookup_or_add_for_write_span<bool>(
".select_vert", ATTR_DOMAIN_POINT);
for (const int i : select_vert.span.index_range()) {
if (!hide_vert[i]) {
if (dverts[i].dw == nullptr) {
/* if null weight then not grouped */
select_vert.span[i] = true;
}
}
}
select_vert.finish();
if (flush_flags) {
paintvert_flush_flags(ob);
}
}
void paintvert_hide(bContext *C, Object *ob, const bool unselected)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr || me->totvert == 0) {
return;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
bke::SpanAttributeWriter<bool> hide_vert = attributes.lookup_or_add_for_write_span<bool>(
".hide_vert", ATTR_DOMAIN_POINT);
bke::SpanAttributeWriter<bool> select_vert = attributes.lookup_or_add_for_write_span<bool>(
".select_vert", ATTR_DOMAIN_POINT);
for (const int i : hide_vert.span.index_range()) {
if (!hide_vert.span[i]) {
if (!select_vert.span[i] == unselected) {
hide_vert.span[i] = true;
}
}
if (hide_vert.span[i]) {
select_vert.span[i] = false;
}
}
hide_vert.finish();
select_vert.finish();
BKE_mesh_flush_hidden_from_verts(me);
paintvert_flush_flags(ob);
paintvert_tag_select_update(C, ob);
}
void paintvert_reveal(bContext *C, Object *ob, const bool select)
{
using namespace blender;
Mesh *me = BKE_mesh_from_object(ob);
if (me == nullptr || me->totvert == 0) {
return;
}
bke::MutableAttributeAccessor attributes = me->attributes_for_write();
const VArray<bool> hide_vert = attributes.lookup_or_default<bool>(
".hide_vert", ATTR_DOMAIN_POINT, false);
bke::SpanAttributeWriter<bool> select_vert = attributes.lookup_or_add_for_write_span<bool>(
".select_vert", ATTR_DOMAIN_POINT);
for (const int i : select_vert.span.index_range()) {
if (hide_vert[i]) {
select_vert.span[i] = select;
}
}
select_vert.finish();
/* Remove the hide attribute to reveal all vertices. */
attributes.remove(".hide_vert");
BKE_mesh_flush_hidden_from_verts(me);
paintvert_flush_flags(ob);
paintvert_tag_select_update(C, ob);
}