def foam_graph_to_mesh(k_foam, thickness):
V, E = k_foam.vertices, k_foam.edges
V_ = []
E_ = []
dups = []
for v in V:
V_.append(10 * np.array(v))
nv = E[v]
for ni in nv:
if (ni, v) in dups:
continue
E_.append(np.array([V.index(v), V.index(ni)]))
dups.append((ni, v))
dups.append((v, ni))
V_, E_ = np.array(V_), np.array(E_)
wire_network = WireNetwork().create_from_data(V_, E_)
wire_network.center_at_origin()
wire_network.compute_symmetry_orbits()
inflator = Inflator(wire_network)
inflator.inflate(thickness,
allow_self_intersection=True,
per_vertex_thickness=False)
return inflator.mesh
def generate_supports(wire_network, print_dir, support_length,
support_thickness, tol):
min_height = np.amin(np.dot(wire_network.vertices, print_dir));
proj_dist = [];
vertices = [];
edges = [];
for i,v in enumerate(wire_network.vertices):
neighbors = wire_network.vertices[wire_network.get_vertex_neighbors(i)];
neighbors = neighbors.reshape((-1, 3), order="C");
h = np.dot(v, print_dir);
if np.any(np.dot(neighbors, print_dir) <= h + tol) and h > min_height + tol:
continue;
vertices.append(v);
proj_dist.append(h);
num_supports = len(vertices);
base_vertices_top_end = vertices - print_dir * support_thickness;
base_vertices_bottom_end = vertices - np.outer(
(proj_dist - min_height + support_length), print_dir);
vertices = np.vstack((vertices + 0.05 * print_dir,
base_vertices_top_end, base_vertices_bottom_end));
edges = np.vstack((
np.arange(num_supports * 2).reshape((num_supports, 2), order="F"),
np.arange(num_supports, num_supports * 3).reshape((num_supports, 2), order="F")));
thickness = np.hstack((
np.ones(num_supports) * support_thickness * 0.5,
np.ones(num_supports) * support_thickness,
np.ones(num_supports) * support_thickness,));
support_wires = WireNetwork();
support_wires.load(vertices, edges);
support_wires.add_attribute("thickness", thickness);
return support_wires;
def load_wire(wire_file):
network = WireNetwork();
network.load_from_file(wire_file);
return network;
def load_wire(wire_file):
network = WireNetwork()
network.load_from_file(wire_file)
return network