C++ (Cpp) DM_get_vert_data_layer Examples

Example #1

File: displist.c Project: mgschwan/blensor

static void add_orco_dm(Object *ob, DerivedMesh *dm, DerivedMesh *orcodm)
{
	float (*orco)[3], (*layerorco)[3];
	int totvert, a;
	Curve *cu = ob->data;

	totvert = dm->getNumVerts(dm);

	orco = MEM_callocN(sizeof(float) * 3 * totvert, "dm orco");

	if (orcodm->getNumVerts(orcodm) == totvert)
		orcodm->getVertCos(orcodm, orco);
	else
		dm->getVertCos(dm, orco);

	for (a = 0; a < totvert; a++) {
		float *co = orco[a];
		co[0] = (co[0] - cu->loc[0]) / cu->size[0];
		co[1] = (co[1] - cu->loc[1]) / cu->size[1];
		co[2] = (co[2] - cu->loc[2]) / cu->size[2];
	}

	if ((layerorco = DM_get_vert_data_layer(dm, CD_ORCO))) {
		memcpy(layerorco, orco, sizeof(float) * totvert);
		MEM_freeN(orco);
	}
	else
		DM_add_vert_layer(dm, CD_ORCO, CD_ASSIGN, orco);
}

Example #2

File: MOD_cloth.c Project: mcgrathd/blender

static void deformVerts(ModifierData *md, Object *ob, DerivedMesh *derivedData, float (*vertexCos)[3],
                        int numVerts, ModifierApplyFlag UNUSED(flag))
{
	DerivedMesh *dm;
	ClothModifierData *clmd = (ClothModifierData *) md;
	
	/* check for alloc failing */
	if (!clmd->sim_parms || !clmd->coll_parms) {
		initData(md);

		if (!clmd->sim_parms || !clmd->coll_parms)
			return;
	}

	dm = get_dm(ob, NULL, derivedData, NULL, false, false);
	if (dm == derivedData)
		dm = CDDM_copy(dm);

	/* TODO(sergey): For now it actually duplicates logic from DerivedMesh.c
	 * and needs some more generic solution. But starting experimenting with
	 * this so close to the release is not that nice..
	 *
	 * Also hopefully new cloth system will arrive soon..
	 */
	if (derivedData == NULL && clmd->sim_parms->shapekey_rest) {
		KeyBlock *kb = BKE_keyblock_from_key(BKE_key_from_object(ob),
		                                     clmd->sim_parms->shapekey_rest);
		if (kb && kb->data != NULL) {
			float (*layerorco)[3];
			if (!(layerorco = DM_get_vert_data_layer(dm, CD_CLOTH_ORCO))) {
				DM_add_vert_layer(dm, CD_CLOTH_ORCO, CD_CALLOC, NULL);
				layerorco = DM_get_vert_data_layer(dm, CD_CLOTH_ORCO);
			}

			memcpy(layerorco, kb->data, sizeof(float) * 3 * numVerts);
		}
	}

	CDDM_apply_vert_coords(dm, vertexCos);

	DM_ensure_tessface(dm); /* BMESH - UNTIL MODIFIER IS UPDATED FOR MPoly */

	clothModifier_do(clmd, md->scene, ob, dm, vertexCos);

	dm->release(dm);
}