def main():
# Register MeasuredBTF
register_bsdf('measuredbtf', lambda props: MeasuredBTF(props))
# Filename
filename_src = args.input
filename_dst = args.output
# Load an XML file
Thread.thread().file_resolver().append(os.path.dirname(filename_src))
scene = load_file(filename_src)
# Rendering
scene.integrator().render(scene, scene.sensors()[0])
# Save image
film = scene.sensors()[0].film()
bmp = film.bitmap(raw=True)
bmp.convert(Bitmap.PixelFormat.RGB, Struct.Type.UInt8,
srgb_gamma=True).write(filename_dst)
value = self.m_retro_transmittance.eval(si, active)
return (bs, ek.select(active, value, 0))
def eval(self, ctx, si, wo, active):
return 0
def pdf(self, ctx, si, wo, active):
return 0
def to_string(self):
return "MMAPsBSDF[retro_transmittance = %s]".format(
self.m_retro_transmittance.to_string())
register_bsdf("mmapsbsdf", lambda props: MMAPsBSDF(props))
xmlname = sys.argv[1]
outpath = os.path.join('outputs', sys.argv[2])
os.makedirs(outpath, exist_ok=True)
filename = 'xml/{}.xml'.format(xmlname)
Thread.thread().file_resolver().append(os.path.dirname(filename))
angle_min, angle_max = -15, 15
dangle = 1 / 3
current_angle = angle_min
cam2origin = 100
while current_angle <= angle_max:
cam_x = sin(radians(current_angle)) * cam2origin
def pdf(self, ctx, si, wo, active):
if not ctx.is_enabled(BSDFFlags.DiffuseReflection):
return Vector3f(0)
cos_theta_i = Frame3f.cos_theta(si.wi)
cos_theta_o = Frame3f.cos_theta(wo)
pdf = warp.square_to_cosine_hemisphere_pdf(wo)
return ek.select((cos_theta_i > 0.0) & (cos_theta_o > 0.0), pdf, 0.0)
def to_string(self):
return "MyDiffuseBSDF[reflectance = %s]".format(
self.m_reflectance.to_string())
# Register our BSDF such that the XML file loader can instantiate it when loading a scene
register_bsdf("mydiffusebsdf", lambda props: MyDiffuseBSDF(props))
# Load an XML file which specifies "mydiffusebsdf" as material
filename = 'path/to/my/scene.xml'
Thread.thread().file_resolver().append(os.path.dirname(filename))
scene = load_file(filename)
scene.integrator().render(scene, scene.sensors()[0])
film = scene.sensors()[0].film()
film.set_destination_file('my-diffuse-bsdf.exr')
film.develop()