C++ MeshInstance::set_owner方法代码示例

Node *EditorOBJImporter::import_scene(const String &p_path, uint32_t p_flags, int p_bake_fps, List<String> *r_missing_deps, Error *r_err) {

	List<Ref<Mesh> > meshes;

	Error err = _parse_obj(p_path, meshes, false, p_flags & IMPORT_GENERATE_TANGENT_ARRAYS, Vector3(1, 1, 1), r_missing_deps);

	if (err != OK) {
		if (r_err) {
			*r_err = err;
		}
		return NULL;
	}

	Spatial *scene = memnew(Spatial);

	for (List<Ref<Mesh> >::Element *E = meshes.front(); E; E = E->next()) {

		MeshInstance *mi = memnew(MeshInstance);
		mi->set_mesh(E->get());
		mi->set_name(E->get()->get_name());
		scene->add_child(mi);
		mi->set_owner(scene);
	}

	if (r_err) {
		*r_err = OK;
	}

	return scene;
}

void MeshInstance::create_debug_tangents() {

	Vector<Vector3> lines;
	Vector<Color> colors;

	Ref<Mesh> mesh = get_mesh();
	if (!mesh.is_valid())
		return;

	for (int i = 0; i < mesh->get_surface_count(); i++) {
		Array arrays = mesh->surface_get_arrays(i);
		Vector<Vector3> verts = arrays[Mesh::ARRAY_VERTEX];
		Vector<Vector3> norms = arrays[Mesh::ARRAY_NORMAL];
		if (norms.size() == 0)
			continue;
		Vector<float> tangents = arrays[Mesh::ARRAY_TANGENT];
		if (tangents.size() == 0)
			continue;

		for (int j = 0; j < verts.size(); j++) {
			Vector3 v = verts[j];
			Vector3 n = norms[j];
			Vector3 t = Vector3(tangents[j * 4 + 0], tangents[j * 4 + 1], tangents[j * 4 + 2]);
			Vector3 b = (n.cross(t)).normalized() * tangents[j * 4 + 3];

			lines.push_back(v); //normal
			colors.push_back(Color(0, 0, 1)); //color
			lines.push_back(v + n * 0.04); //normal
			colors.push_back(Color(0, 0, 1)); //color

			lines.push_back(v); //tangent
			colors.push_back(Color(1, 0, 0)); //color
			lines.push_back(v + t * 0.04); //tangent
			colors.push_back(Color(1, 0, 0)); //color

			lines.push_back(v); //binormal
			colors.push_back(Color(0, 1, 0)); //color
			lines.push_back(v + b * 0.04); //binormal
			colors.push_back(Color(0, 1, 0)); //color
		}
	}

	if (lines.size()) {

		Ref<SpatialMaterial> sm;
		sm.instance();

		sm->set_flag(SpatialMaterial::FLAG_UNSHADED, true);
		sm->set_flag(SpatialMaterial::FLAG_SRGB_VERTEX_COLOR, true);
		sm->set_flag(SpatialMaterial::FLAG_ALBEDO_FROM_VERTEX_COLOR, true);

		Ref<ArrayMesh> am;
		am.instance();
		Array a;
		a.resize(Mesh::ARRAY_MAX);
		a[Mesh::ARRAY_VERTEX] = lines;
		a[Mesh::ARRAY_COLOR] = colors;

		am->add_surface_from_arrays(Mesh::PRIMITIVE_LINES, a);
		am->surface_set_material(0, sm);

		MeshInstance *mi = memnew(MeshInstance);
		mi->set_mesh(am);
		mi->set_name("DebugTangents");
		add_child(mi);
#ifdef TOOLS_ENABLED

		if (this == get_tree()->get_edited_scene_root())
			mi->set_owner(this);
		else
			mi->set_owner(get_owner());
#endif
	}
}

//.........这里部分代码省略.........
			if (what == "off")
				surf_tool->add_smooth_group(false);
			else
				surf_tool->add_smooth_group(true);
		} else if (/*l.begins_with("g ") ||*/ l.begins_with("usemtl ") || (l.begins_with("o ") || f->eof_reached())) { //commit group to mesh
			//groups are too annoying
			if (surf_tool->get_vertex_array().size()) {
				//another group going on, commit it
				if (normals.size() == 0) {
					surf_tool->generate_normals();
				}

				if (generate_tangents && uvs.size()) {
					surf_tool->generate_tangents();
				}

				surf_tool->index();

				print_line("current material library " + current_material_library + " has " + itos(material_map.has(current_material_library)));
				print_line("current material " + current_material + " has " + itos(material_map.has(current_material_library) && material_map[current_material_library].has(current_material)));

				if (material_map.has(current_material_library) && material_map[current_material_library].has(current_material)) {
					surf_tool->set_material(material_map[current_material_library][current_material]);
				}

				mesh = surf_tool->commit(mesh);

				if (current_material != String()) {
					mesh->surface_set_name(mesh->get_surface_count() - 1, current_material.get_basename());
				} else if (current_group != String()) {
					mesh->surface_set_name(mesh->get_surface_count() - 1, current_group);
				}

				print_line("Added surface :" + mesh->surface_get_name(mesh->get_surface_count() - 1));
				surf_tool->clear();
				surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
			}

			if (l.begins_with("o ") || f->eof_reached()) {

				MeshInstance *mi = memnew(MeshInstance);
				mi->set_name(name);
				mi->set_mesh(mesh);

				scene->add_child(mi);
				mi->set_owner(scene);

				mesh.instance();
				current_group = "";
				current_material = "";
			}

			if (f->eof_reached()) {
				break;
			}

			if (l.begins_with("o ")) {
				name = l.substr(2, l.length()).strip_edges();
			}

			if (l.begins_with("usemtl ")) {

				current_material = l.replace("usemtl", "").strip_edges();
			}

			if (l.begins_with("g ")) {

				current_group = l.substr(2, l.length()).strip_edges();
			}

		} else if (l.begins_with("mtllib ")) { //parse material

			current_material_library = l.replace("mtllib", "").strip_edges();
			if (!material_map.has(current_material_library)) {
				Map<String, Ref<SpatialMaterial> > lib;
				Error err = _parse_material_library(current_material_library, lib, r_missing_deps);
				if (err == ERR_CANT_OPEN) {
					String dir = p_path.get_base_dir();
					err = _parse_material_library(dir.plus_file(current_material_library), lib, r_missing_deps);
				}
				if (err == OK) {
					material_map[current_material_library] = lib;
				}
			}
		}
	}

	/*
	TODO, check existing materials and merge?
	//re-apply materials if exist
	for(int i=0;i<mesh->get_surface_count();i++) {

		String n = mesh->surface_get_name(i);
		if (name_map.has(n))
			mesh->surface_set_material(i,name_map[n]);
	}
*/

	return scene;
}