Method convert

src/ifcgeom/kernels/cgal/CgalKernel.cpp:161–229

#endif

bool CgalKernel::convert(const taxonomy::shell::ptr l, cgal_shape_t& shape) {
	for (auto& f : l->children) {
		if (f->basis && f->basis->kind() != taxonomy::PLANE) {
			Logger::Error("CGAL Kernel: Non-planar faces not supported at the moment");
			throw not_supported_error();
		}
		for (auto& w : f->children) {
			for (auto& e : w->children) {
				if (e->basis && e->basis->kind() == taxonomy::BSPLINE_CURVE) {
					Logger::Error("CGAL Kernel: B-spline edge curves not supported at the moment");
					throw not_supported_error();
				}
			}
		}
	}
	if (false && l->children.size() > 100) {
		static double inf = 1.e9; //  std::numeric_limits<double>::infinity();
		std::pair<Eigen::Vector3d, Eigen::Vector3d> minmax(
			Eigen::Vector3d(+inf, +inf, +inf),
			Eigen::Vector3d(-inf, -inf, -inf)
		);
		size_t num_points = 0;
		visit_2<taxonomy::point3, taxonomy::shell>(l, [&minmax, &num_points](const taxonomy::point3::ptr p) {
			auto& c = p->ccomponents();
			++num_points;
			for (int i = 0; i < 3; ++i) {
				if (c(i) < minmax.first(i)) {
					minmax.first(i) = c(i);
				}
				if (c(i) > minmax.second(i)) {
					minmax.second(i) = c(i);
				}
			}
		});
		auto diag = minmax.second - minmax.first;
		double volume = diag(0) * diag(1) * diag(2);
		// @todo volume van be zero also..
		double density = num_points / volume;
		Logger::Notice("Density " + boost::lexical_cast<std::string>(density), l->instance);
		if (density > 5000) {
			Logger::Notice("Substituted element with " + boost::lexical_cast<std::string>(density) + " vertices / m3 with a bounding box");
			CGAL::Point_3<Kernel_> lower(minmax.first(0), minmax.first(1), minmax.first(2));
			CGAL::Point_3<Kernel_> upper(minmax.second(0), minmax.second(1), minmax.second(2));
			shape = utils::create_cube(lower, upper);
			return true;
		}
	}

	std::list<cgal_face_t> face_list;
	for (auto& f : l->children) {
		bool success = false;
		try {
			success = convert(f, face_list);
		} catch (...) {}

		if (!success) {
			Logger::Message(Logger::LOG_WARNING, "Failed to convert face:", f->instance);
			continue;