BMEditMesh *BKE_editmesh_copy(BMEditMesh *em)
{
BMEditMesh *em_copy = MEM_callocN(sizeof(BMEditMesh), __func__);
*em_copy = *em;
em_copy->derivedCage = em_copy->derivedFinal = NULL;
em_copy->derivedVertColor = NULL;
em_copy->derivedVertColorLen = 0;
em_copy->derivedFaceColor = NULL;
em_copy->derivedFaceColorLen = 0;
em_copy->bm = BM_mesh_copy(em->bm);
/* The tessellation is NOT calculated on the copy here,
* because currently all the callers of this function use
* it to make a backup copy of the BMEditMesh to restore
* it in the case of errors in an operation. For perf
* reasons, in that case it makes more sense to do the
* tessellation only when/if that copy ends up getting
* used.*/
em_copy->looptris = NULL;
em_copy->presel_verts = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp, "PSV");
em_copy->presel_edges = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp, "PSE");
em_copy->presel_faces = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp, "PSF");
em_copy->prop3d_faces = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp, "PPF");
em_copy->prop2d_faces = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp, "PPF");
return em_copy;
}
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);
}
}
BMBackup EDBM_redo_state_store(BMEditMesh *em)
{
BMBackup backup;
backup.bmcopy = BM_mesh_copy(em->bm);
return backup;
}
