Ejemplos de BKE_mesh_calc_normals_split en C++ (Cpp)

Ejemplo n.º 1

Archivo: GeometryExporter.cpp Proyecto: mcgrathd/blender

void GeometryExporter::create_normals(std::vector<Normal> &normals, std::vector<BCPolygonNormalsIndices> &polygons_normals, Mesh *me)
{
	std::map<Normal, unsigned int> shared_normal_indices;
	int last_normal_index = -1;

	MVert *verts  = me->mvert;
	MLoop *mloops = me->mloop;
	float(*lnors)[3];

	BKE_mesh_calc_normals_split(me);
	if (CustomData_has_layer(&me->ldata, CD_NORMAL)) {
		lnors = (float(*)[3])CustomData_get_layer(&me->ldata, CD_NORMAL);
	}

	for (int poly_index = 0; poly_index < me->totpoly; poly_index++) {
		MPoly *mpoly  = &me->mpoly[poly_index];

		if (!(mpoly->flag & ME_SMOOTH)) {
			// For flat faces use face normal as vertex normal:

			float vector[3];
			BKE_mesh_calc_poly_normal(mpoly, mloops+mpoly->loopstart, verts, vector);

			Normal n = { vector[0], vector[1], vector[2] };
			normals.push_back(n);
			last_normal_index++;
		}

		MLoop *mloop = mloops + mpoly->loopstart;
		BCPolygonNormalsIndices poly_indices;
		for (int loop_index = 0; loop_index < mpoly->totloop; loop_index++) {
			unsigned int loop_idx = mpoly->loopstart + loop_index;
			if (mpoly->flag & ME_SMOOTH) {

				float normalized[3];
				normalize_v3_v3(normalized, lnors[loop_idx]);
				Normal n = { normalized[0], normalized[1], normalized[2] };

				if (shared_normal_indices.find(n) != shared_normal_indices.end()) {
					poly_indices.add_index(shared_normal_indices[n]);
				}
				else {
					last_normal_index++;
					poly_indices.add_index(last_normal_index);
					shared_normal_indices[n] = last_normal_index;
					normals.push_back(n);
				}
			}
			else {
				poly_indices.add_index(last_normal_index);
			}
		}

		polygons_normals.push_back(poly_indices);
	}
}

Ejemplo n.º 2

Archivo: rna_mesh_api.c Proyecto: DarkDefender/blender-npr-tess2

static void rna_Mesh_calc_tangents(Mesh *mesh, ReportList *reports, const char *uvmap)
{
	float (*r_looptangents)[4];

	if (CustomData_has_layer(&mesh->ldata, CD_MLOOPTANGENT)) {
		r_looptangents = CustomData_get_layer(&mesh->ldata, CD_MLOOPTANGENT);
		memset(r_looptangents, 0, sizeof(float[4]) * mesh->totloop);
	}
	else {
		r_looptangents = CustomData_add_layer(&mesh->ldata, CD_MLOOPTANGENT, CD_CALLOC, NULL, mesh->totloop);
		CustomData_set_layer_flag(&mesh->ldata, CD_MLOOPTANGENT, CD_FLAG_TEMPORARY);
	}

	/* Compute loop normals if needed. */
	if (!CustomData_has_layer(&mesh->ldata, CD_NORMAL)) {
		BKE_mesh_calc_normals_split(mesh);
	}

	BKE_mesh_loop_tangents(mesh, uvmap, r_looptangents, reports);
}