bool Scene::initialize() { bool res = true; for (unsigned int i = 0; i < num_geometries(); i++) res &= geometries[i]->initialize(); return res; }
box2d<double> envelope() const { box2d<double> result; for (unsigned i=0;i<num_geometries();++i) { geometry2d const& geom = get_geometry(i); if (i==0) { box2d<double> box = geom.envelope(); result.init(box.minx(),box.miny(),box.maxx(),box.maxy()); } else { result.expand_to_include(geom.envelope()); } } return result; }