def read(self, file_name):
mesh = None
scene_node = None
extension = os.path.splitext(file_name)[1]
if extension.lower() in self._supported_extensions:
vertex_list = []
normal_list = []
uv_list = []
face_list = []
scene_node = SceneNode()
mesh = MeshData()
scene_node.setMeshData(mesh)
f = open(file_name, "rt")
for line in f:
parts = line.split()
if len(parts) < 1:
continue
if parts[0] == "v":
vertex_list.append([float(parts[1]), float(parts[3]), -float(parts[2])])
if parts[0] == "vn":
normal_list.append([float(parts[1]), float(parts[3]), -float(parts[2])])
if parts[0] == "vt":
uv_list.append([float(parts[1]), float(parts[2])])
if parts[0] == "f":
parts = [i for i in map(lambda p: p.split("/"), parts)]
for idx in range(1, len(parts)-2):
data = [int(parts[1][0]), int(parts[idx+1][0]), int(parts[idx+2][0])]
if len(parts[1]) > 2:
data += [int(parts[1][2]), int(parts[idx+1][2]), int(parts[idx+2][2])]
if parts[1][1] and parts[idx+1][1] and parts[idx+2][1]:
data += [int(parts[1][1]), int(parts[idx+1][1]), int(parts[idx+2][1])]
face_list.append(data)
Job.yieldThread()
f.close()
mesh.reserveVertexCount(3 * len(face_list))
num_vertices = len(vertex_list)
num_normals = len(normal_list)
for face in face_list:
# Substract 1 from index, as obj starts counting at 1 instead of 0
i = face[0] - 1
j = face[1] - 1
k = face[2] - 1
if len(face) > 3:
ni = face[3] - 1
nj = face[4] - 1
nk = face[5] - 1
else:
ni = -1
nj = -1
nk = -1
if len(face) > 6:
ui = face[6] - 1
uj = face[7] - 1
uk = face[8] - 1
else:
ui = -1
uj = -1
uk = -1
#TODO: improve this handling, this can cause weird errors (negative indexes are relative indexes, and are not properly handled)
if i < 0 or i >= num_vertices:
i = 0
if j < 0 or j >= num_vertices:
j = 0
if k < 0 or k >= num_vertices:
k = 0
if ni != -1 and nj != -1 and nk != -1:
mesh.addFaceWithNormals(vertex_list[i][0], vertex_list[i][1], vertex_list[i][2], normal_list[ni][0], normal_list[ni][1], normal_list[ni][2], vertex_list[j][0], vertex_list[j][1], vertex_list[j][2], normal_list[nj][0], normal_list[nj][1], normal_list[nj][2], vertex_list[k][0], vertex_list[k][1], vertex_list[k][2],normal_list[nk][0], normal_list[nk][1], normal_list[nk][2])
else:
mesh.addFace(vertex_list[i][0], vertex_list[i][1], vertex_list[i][2], vertex_list[j][0], vertex_list[j][1], vertex_list[j][2], vertex_list[k][0], vertex_list[k][1], vertex_list[k][2])
if ui != -1:
mesh.setVertexUVCoordinates(mesh.getVertexCount() - 3, uv_list[ui][0], uv_list[ui][1])
if uj != -1:
mesh.setVertexUVCoordinates(mesh.getVertexCount() - 2, uv_list[uj][0], uv_list[uj][1])
if uk != -1:
mesh.setVertexUVCoordinates(mesh.getVertexCount() - 1, uv_list[uk][0], uv_list[uk][1])
Job.yieldThread()
if not mesh.hasNormals():
mesh.calculateNormals(fast = True)
return scene_node
def read(self, file_name):
mesh = None
scene_node = None
extension = os.path.splitext(file_name)[1]
if extension.lower() == self._supported_extension:
vertex_list = []
normal_list = []
uv_list = []
face_list = []
scene_node = SceneNode()
mesh = MeshData()
scene_node.setMeshData(mesh)
f = open(file_name, "rt")
for line in f:
parts = line.split()
if len(parts) < 1:
continue
if parts[0] == "v":
vertex_list.append([float(parts[1]), float(parts[3]), -float(parts[2])])
if parts[0] == "vn":
normal_list.append([float(parts[1]), float(parts[3]), -float(parts[2])])
if parts[0] == "vt":
uv_list.append([float(parts[1]), float(parts[2])])
if parts[0] == "f":
parts = [i for i in map(lambda p: p.split("/"), parts)]
for idx in range(1, len(parts)-2):
data = [int(parts[1][0]), int(parts[idx+1][0]), int(parts[idx+2][0])]
if len(parts[1]) > 2:
data += [int(parts[1][2]), int(parts[idx+1][2]), int(parts[idx+2][2])]
if parts[1][1] and parts[idx+1][1] and parts[idx+2][1]:
data += [int(parts[1][1]), int(parts[idx+1][1]), int(parts[idx+2][1])]
face_list.append(data)
f.close()
mesh.reserveVertexCount(3 * len(face_list))
num_vertices = len(vertex_list)
num_normals = len(normal_list)
for face in face_list:
# Substract 1 from index, as obj starts counting at 1 instead of 0
i = face[0] - 1
j = face[1] - 1
k = face[2] - 1
if len(face) > 3:
ni = face[3] - 1
nj = face[4] - 1
nk = face[5] - 1
else:
ni = -1
nj = -1
nk = -1
if len(face) > 6:
ui = face[6] - 1
uj = face[7] - 1
uk = face[8] - 1
else:
ui = -1
uj = -1
uk = -1
#TODO: improve this handling, this can cause weird errors
if i < 0 or i >= num_vertices:
i = 0
if j < 0 or j >= num_vertices:
j = 0
if k < 0 or k >= num_vertices:
k = 0
if(ni != -1 and nj != -1 and nk != -1):
mesh.addFaceWithNormals(vertex_list[i][0], vertex_list[i][1], vertex_list[i][2], normal_list[ni][0], normal_list[ni][1], normal_list[ni][2], vertex_list[j][0], vertex_list[j][1], vertex_list[j][2], normal_list[nj][0], normal_list[nj][1], normal_list[nj][2], vertex_list[k][0], vertex_list[k][1], vertex_list[k][2],normal_list[nk][0], normal_list[nk][1], normal_list[nk][2])
else:
mesh.addFace(vertex_list[i][0], vertex_list[i][1], vertex_list[i][2], vertex_list[j][0], vertex_list[j][1], vertex_list[j][2], vertex_list[k][0], vertex_list[k][1], vertex_list[k][2])
if ui != -1:
mesh.setVertexUVCoordinates(mesh.getVertexCount() - 3, uv_list[ui][0], uv_list[ui][1])
if uj != -1:
mesh.setVertexUVCoordinates(mesh.getVertexCount() - 2, uv_list[uj][0], uv_list[uj][1])
if uk != -1:
mesh.setVertexUVCoordinates(mesh.getVertexCount() - 1, uv_list[uk][0], uv_list[uk][1])
if not mesh.hasNormals():
mesh.calculateNormals(fast = True)
return scene_node
