/* copy the face flags, most importantly selection from the mesh to the final derived mesh,
* use in object mode when selecting faces (while painting) */
void paintface_flush_flags(Object *ob, short flag)
{
Mesh *me = BKE_mesh_from_object(ob);
DerivedMesh *dm = ob->derivedFinal;
MPoly *polys, *mp_orig;
const int *index_array = NULL;
int totpoly;
int i;
BLI_assert((flag & ~(SELECT | ME_HIDE)) == 0);
if (me == NULL)
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 (flag & SELECT) {
BKE_mesh_flush_select_from_polys(me);
}
if (dm == NULL)
return;
/* Mesh polys => Final derived polys */
if ((index_array = CustomData_get_layer(&dm->polyData, CD_ORIGINDEX))) {
polys = dm->getPolyArray(dm);
totpoly = dm->getNumPolys(dm);
/* loop over final derived polys */
for (i = 0; i < totpoly; i++) {
if (index_array[i] != ORIGINDEX_NONE) {
/* Copy flags onto the final derived poly from the original mesh poly */
mp_orig = me->mpoly + index_array[i];
polys[i].flag = mp_orig->flag;
}
}
}
if (flag & ME_HIDE) {
/* draw-object caches hidden faces, force re-generation T46867 */
GPU_drawobject_free(dm);
}
}
/* copy the face flags, most importantly selection from the mesh to the final derived mesh,
* use in object mode when selecting faces (while painting) */
void paintface_flush_flags(struct bContext *C, Object *ob, short flag)
{
Mesh *me = BKE_mesh_from_object(ob);
MPoly *polys, *mp_orig;
const int *index_array = NULL;
int totpoly;
int i;
BLI_assert((flag & ~(SELECT | ME_HIDE)) == 0);
if (me == NULL) {
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 (flag & SELECT) {
BKE_mesh_flush_select_from_polys(me);
}
Depsgraph *depsgraph = CTX_data_depsgraph(C);
Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob);
if (ob_eval == NULL) {
return;
}
Mesh *me_orig = ob_eval->runtime.mesh_orig;
Mesh *me_eval = ob_eval->runtime.mesh_eval;
bool updated = false;
if (me_orig != NULL && me_eval != NULL && me_orig->totpoly == me->totpoly) {
/* Update the COW copy of the mesh. */
for (i = 0; i < me->totpoly; i++) {
me_orig->mpoly[i].flag = me->mpoly[i].flag;
}
/* If the mesh has only deform modifiers, the evaluated mesh shares arrays. */
if (me_eval->mpoly == me_orig->mpoly) {
updated = true;
}
/* Mesh polys => Final derived polys */
else if ((index_array = CustomData_get_layer(&me_eval->pdata, CD_ORIGINDEX))) {
polys = me_eval->mpoly;
totpoly = me_eval->totpoly;
/* loop over final derived polys */
for (i = 0; i < totpoly; i++) {
if (index_array[i] != ORIGINDEX_NONE) {
/* Copy flags onto the final derived poly from the original mesh poly */
mp_orig = me->mpoly + index_array[i];
polys[i].flag = mp_orig->flag;
}
}
updated = true;
}
}
if (updated) {
if (flag & ME_HIDE) {
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(ob->data, ID_RECALC_SELECT);
}
else {
DEG_id_tag_update(ob->data, ID_RECALC_COPY_ON_WRITE | ID_RECALC_SELECT);
}
WM_event_add_notifier(C, NC_GEOM | ND_SELECT, ob->data);
}
