def _collect_new_faces(mesh):
newMesh=Mesh()
for face in mesh.faces:
v1 = face.vertices[-2]
v2 = face.vertices[-1]
for v3 in face.vertices:
edge1 = mesh.edge_adjacent_to_vertices(v1,v2)
edge2 = mesh.edge_adjacent_to_vertices(v2,v3)
if (edge1 != None) and (edge2!= None):
newFace = Face([edge1.vertex, v2.vertex, edge2.vertex, face.vertex])
newFace.color = face.color
newFace.group = face.group
newMesh.faces.append(newFace)
v1 = v2
v2 = v3
newMesh.update_topology()
return newMesh
def import_obj(filename):
"""Loads a Wavefront OBJ file. """
mesh = Mesh()
group = ""
for line in open(filename, "r"):
if line.startswith('#'): continue
values = line.split()
if not values: continue
if values[0] == 'g':
group=values[1]
elif values[0] == 'v':
v = [float(c) for c in values[1 : 4]]
#v = map(float, values[1:4])
mesh.vertices.append(Vertex(v[0],v[1],v[2]))
elif values[0] == 'f':
face = Face([])
face.group = group
for v in values[1:]:
w = v.split('/')
vertex = mesh.vertices[int(w[0]) - 1]
face.vertices.append(vertex)
mesh.faces.append(face)
return mesh