diff options
Diffstat (limited to 'cube.cc')
| -rw-r--r-- | cube.cc | 69 |
1 files changed, 61 insertions, 8 deletions
@@ -58,16 +58,69 @@ void register_builtin_cube() builtin_modules["cube"] = new CubeModule(); } +class CGAL_Build_cube : public CGAL::Modifier_base<CGAL_HDS> +{ +public: + const CubeNode *n; + CGAL_Build_cube(const CubeNode *n) : n(n) { } + void operator()(CGAL_HDS& hds) { + CGAL_Polybuilder B(hds, true); + B.begin_surface(8, 6, 24); + typedef CGAL_HDS::Vertex::Point Point; + B.add_vertex(Point(-n->x/2, -n->y/2, +n->z/2)); // 0 + B.add_vertex(Point(+n->x/2, -n->y/2, +n->z/2)); // 1 + B.add_vertex(Point(+n->x/2, +n->y/2, +n->z/2)); // 2 + B.add_vertex(Point(-n->x/2, +n->y/2, +n->z/2)); // 3 + B.add_vertex(Point(-n->x/2, -n->y/2, -n->z/2)); // 4 + B.add_vertex(Point(+n->x/2, -n->y/2, -n->z/2)); // 5 + B.add_vertex(Point(+n->x/2, +n->y/2, -n->z/2)); // 6 + B.add_vertex(Point(-n->x/2, +n->y/2, -n->z/2)); // 7 + B.begin_facet(); + B.add_vertex_to_facet(0); + B.add_vertex_to_facet(1); + B.add_vertex_to_facet(2); + B.add_vertex_to_facet(3); + B.end_facet(); + B.begin_facet(); + B.add_vertex_to_facet(7); + B.add_vertex_to_facet(6); + B.add_vertex_to_facet(5); + B.add_vertex_to_facet(4); + B.end_facet(); + B.begin_facet(); + B.add_vertex_to_facet(4); + B.add_vertex_to_facet(5); + B.add_vertex_to_facet(1); + B.add_vertex_to_facet(0); + B.end_facet(); + B.begin_facet(); + B.add_vertex_to_facet(5); + B.add_vertex_to_facet(6); + B.add_vertex_to_facet(2); + B.add_vertex_to_facet(1); + B.end_facet(); + B.begin_facet(); + B.add_vertex_to_facet(6); + B.add_vertex_to_facet(7); + B.add_vertex_to_facet(3); + B.add_vertex_to_facet(2); + B.end_facet(); + B.begin_facet(); + B.add_vertex_to_facet(7); + B.add_vertex_to_facet(4); + B.add_vertex_to_facet(0); + B.add_vertex_to_facet(3); + B.end_facet(); + B.end_surface(); + } +}; + CGAL_Nef_polyhedron CubeNode::render_cgal_nef_polyhedron() const { - CGAL_Plane P1 = CGAL_Plane(+1, 0, 0, -x/2); - CGAL_Nef_polyhedron N1(P1); - CGAL_Nef_polyhedron N2(CGAL_Plane(-1, 0, 0, -x/2)); - CGAL_Nef_polyhedron N3(CGAL_Plane( 0, +1, 0, -y/2)); - CGAL_Nef_polyhedron N4(CGAL_Plane( 0, -1, 0, -y/2)); - CGAL_Nef_polyhedron N5(CGAL_Plane( 0, 0, +1, -z/2)); - CGAL_Nef_polyhedron N6(CGAL_Plane( 0, 0, -1, -z/2)); - CGAL_Nef_polyhedron N = N1 * N2 * N3 * N4 * N5 * N6; + CGAL_Polyhedron P; + CGAL_Build_cube builder(this); + P.delegate(builder); + CGAL_Nef_polyhedron N(P); progress_report(); return N; } |