C++ (Cpp) DM_add_vert_layer示例

示例#1

/* returns a derived mesh if dm == NULL, for deforming modifiers that need it */
DerivedMesh *get_dm(Object *ob, struct BMEditMesh *em, DerivedMesh *dm,
                    float (*vertexCos)[3], bool use_normals, bool use_orco)
{
	if (dm) {
		/* pass */
	}
	else if (ob->type == OB_MESH) {
		if (em) dm = CDDM_from_editbmesh(em, false, false);
		else dm = CDDM_from_mesh((struct Mesh *)(ob->data));

		if (vertexCos) {
			CDDM_apply_vert_coords(dm, vertexCos);
			dm->dirty |= DM_DIRTY_NORMALS;
		}
		
		if (use_orco) {
			DM_add_vert_layer(dm, CD_ORCO, CD_ASSIGN, BKE_mesh_orco_verts_get(ob));
		}
	}
	else if (ELEM3(ob->type, OB_FONT, OB_CURVE, OB_SURF)) {
		dm = CDDM_from_curve(ob);
	}

	if (use_normals) {
		if (LIKELY(dm)) {
			DM_ensure_normals(dm);
		}
	}

	return dm;
}

示例#2

文件： displist.c 项目： 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);
}

示例#3

文件： MOD_cloth.c 项目： 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);
}

示例#4

/* returns a derived mesh if dm == NULL, for deforming modifiers that need it */
DerivedMesh *get_dm(Object *ob, struct BMEditMesh *em, DerivedMesh *dm, float (*vertexCos)[3], int orco)
{
	if (dm)
		return dm;

	if (ob->type == OB_MESH) {
		if (em) dm = CDDM_from_editbmesh(em, FALSE, FALSE);
		else dm = CDDM_from_mesh((struct Mesh *)(ob->data), ob);

		if (vertexCos) {
			CDDM_apply_vert_coords(dm, vertexCos);
			//CDDM_calc_normals(dm);
		}
		
		if (orco)
			DM_add_vert_layer(dm, CD_ORCO, CD_ASSIGN, BKE_mesh_orco_verts_get(ob));
	}
	else if (ELEM3(ob->type, OB_FONT, OB_CURVE, OB_SURF)) {
		dm = CDDM_from_curve(ob);
	}

	return dm;
}