/* converts a cddm to a BMEditMesh. if existing is non-NULL, the
* new geometry will be put in there.*/
BMEditMesh *DM_to_editbmesh(DerivedMesh *dm, BMEditMesh *existing, const bool do_tessellate)
{
BMEditMesh *em = existing;
BMesh *bm;
if (em) {
bm = em->bm;
}
else {
bm = BM_mesh_create(&bm_mesh_allocsize_default);
}
DM_to_bmesh_ex(dm, bm, do_tessellate);
if (!em) {
em = BKE_editmesh_create(bm, do_tessellate);
}
else {
if (do_tessellate) {
BKE_editmesh_tessface_calc(em);
}
}
return em;
}
BMEditMesh *BKE_editmesh_create(BMesh *bm, const bool do_tessellate)
{
BMEditMesh *em = MEM_callocN(sizeof(BMEditMesh), __func__);
em->bm = bm;
if (do_tessellate) {
BKE_editmesh_tessface_calc(em);
}
return em;
}
void EDBM_redo_state_restore(BMBackup backup, BMEditMesh *em, int recalctess)
{
BMesh *tmpbm;
if (!em || !backup.bmcopy) {
return;
}
BM_mesh_data_free(em->bm);
tmpbm = BM_mesh_copy(backup.bmcopy);
*em->bm = *tmpbm;
MEM_freeN(tmpbm);
tmpbm = NULL;
if (recalctess) {
BKE_editmesh_tessface_calc(em);
}
}
void EDBM_redo_state_free(BMBackup *backup, BMEditMesh *em, int recalctess)
{
if (em && backup->bmcopy) {
BM_mesh_data_free(em->bm);
*em->bm = *backup->bmcopy;
}
else if (backup->bmcopy) {
BM_mesh_data_free(backup->bmcopy);
}
if (backup->bmcopy) {
MEM_freeN(backup->bmcopy);
}
backup->bmcopy = NULL;
if (recalctess && em) {
BKE_editmesh_tessface_calc(em);
}
}
/* returns 0 on error, 1 on success. executes and finishes a bmesh operator */
bool EDBM_op_finish(BMEditMesh *em, BMOperator *bmop, wmOperator *op, const bool do_report)
{
const char *errmsg;
BMO_op_finish(em->bm, bmop);
if (BMO_error_get(em->bm, &errmsg, NULL)) {
BMEditMesh *emcopy = em->emcopy;
if (do_report) {
BKE_report(op->reports, RPT_ERROR, errmsg);
}
EDBM_mesh_free(em);
*em = *emcopy;
MEM_freeN(emcopy);
em->emcopyusers = 0;
em->emcopy = NULL;
/* when copying, tessellation isn't to for faster copying,
* but means we need to re-tessellate here */
if (em->looptris == NULL) {
BKE_editmesh_tessface_calc(em);
}
return false;
}
else {
em->emcopyusers--;
if (em->emcopyusers < 0) {
printf("warning: em->emcopyusers was less than zero.\n");
}
if (em->emcopyusers <= 0) {
BKE_editmesh_free(em->emcopy);
MEM_freeN(em->emcopy);
em->emcopy = NULL;
}
return true;
}
}