def load_material_library(file_name):
library = MaterialLibrary()
material = None
print('-- Loading material library {}'.format(file_name))
mtlfile = open(file_name)
for line in mtlfile:
fields = line.split()
if len(fields) != 0:
if fields[0] == 'newmtl':
if material is not None:
library.add_material(material)
material = Material(fields[1])
print('Found material definition: {}'.format(material.name))
elif fields[0] == 'Ka':
material.Ka = np.array(fields[1:], 'f')
elif fields[0] == 'Kd':
material.Kd = np.array(fields[1:], 'f')
elif fields[0] == 'Ks':
material.Ks = np.array(fields[1:], 'f')
elif fields[0] == 'Ns':
material.Ns = float(fields[1])
elif fields[0] == 'd':
material.d = float(fields[1])
elif fields[0] == 'Tr':
material.d = 1.0 - float(fields[1])
elif fields[0] == 'illum':
material.illumination = int(fields[1])
elif fields[0] == 'map_Kd':
material.texture = fields[1]
library.add_material(material)
print('- Done, loaded {} materials'.format(len(library.materials)))
return library
