Mesh *BKE_mesh_copy_ex(Main *bmain, Mesh *me)
{
Mesh *men;
MTFace *tface;
MTexPoly *txface;
int a, i;
const int do_tessface = ((me->totface != 0) && (me->totpoly == 0)); /* only do tessface if we have no polys */
men = BKE_libblock_copy_ex(bmain, &me->id);
men->mat = MEM_dupallocN(me->mat);
for (a = 0; a < men->totcol; a++) {
id_us_plus((ID *)men->mat[a]);
}
id_us_plus((ID *)men->texcomesh);
CustomData_copy(&me->vdata, &men->vdata, CD_MASK_MESH, CD_DUPLICATE, men->totvert);
CustomData_copy(&me->edata, &men->edata, CD_MASK_MESH, CD_DUPLICATE, men->totedge);
CustomData_copy(&me->ldata, &men->ldata, CD_MASK_MESH, CD_DUPLICATE, men->totloop);
CustomData_copy(&me->pdata, &men->pdata, CD_MASK_MESH, CD_DUPLICATE, men->totpoly);
if (do_tessface) {
CustomData_copy(&me->fdata, &men->fdata, CD_MASK_MESH, CD_DUPLICATE, men->totface);
}
else {
mesh_tessface_clear_intern(men, FALSE);
}
BKE_mesh_update_customdata_pointers(men, do_tessface);
/* ensure indirect linked data becomes lib-extern */
for (i = 0; i < me->fdata.totlayer; i++) {
if (me->fdata.layers[i].type == CD_MTFACE) {
tface = (MTFace *)me->fdata.layers[i].data;
for (a = 0; a < me->totface; a++, tface++)
if (tface->tpage)
id_lib_extern((ID *)tface->tpage);
}
}
for (i = 0; i < me->pdata.totlayer; i++) {
if (me->pdata.layers[i].type == CD_MTEXPOLY) {
txface = (MTexPoly *)me->pdata.layers[i].data;
for (a = 0; a < me->totpoly; a++, txface++)
if (txface->tpage)
id_lib_extern((ID *)txface->tpage);
}
}
men->edit_btmesh = NULL;
men->mselect = MEM_dupallocN(men->mselect);
men->bb = MEM_dupallocN(men->bb);
men->key = BKE_key_copy(me->key);
if (men->key) men->key->from = (ID *)men;
return men;
}
void *BKE_libblock_copy(ID *id)
{
return BKE_libblock_copy_ex(G.main, id);
}
