# CAMERA
rgb = RGBPipeline2D(display_unsaturated_fraction=0.96, name="sRGB")
sampler = RGBAdaptiveSampler2D(rgb,
ratio=10,
fraction=0.2,
min_samples=2000,
cutoff=0.01)
camera = PinholeCamera((1024, 1024),
parent=world,
transform=translate(0, 0.16, -0.4) * rotate(0, -12, 0),
pipelines=[rgb],
frame_sampler=sampler)
camera.spectral_rays = 15
camera.spectral_bins = 15
camera.pixel_samples = 250
camera.ray_max_depth = 500
camera.ray_extinction_min_depth = 3
camera.ray_extinction_prob = 0.01
# RAY TRACE
ion()
name = 'standford_bunny'
timestamp = time.strftime("%Y-%m-%d_%H-%M-%S")
render_pass = 1
while not camera.render_complete:
print("Rendering pass {}...".format(render_pass))
camera.observe()
rgb.save("{}_{}_pass_{}.png".format(name, timestamp, render_pass))
print()
# --------------- # Process the ray-traced spectra with the RGB pipeline. rgb = RGBPipeline2D() # camera camera = PinholeCamera((512, 512), pipelines=[rgb], transform=translate(0, 10, -10) * rotate(0, -45, 0)) # camera - pixel sampling settings camera.fov = 45 camera.pixel_samples = 250 # camera - ray sampling settings camera.spectral_rays = 1 camera.spectral_bins = 20 camera.ray_max_depth = 100 camera.ray_extinction_prob = 0.1 camera.min_wavelength = 375.0 camera.max_wavelength = 740.0 # 3. Build Scenegraph # ------------------- world = World() sphere.parent = world ground.parent = world emitter.parent = world camera.parent = world
# background light source
top_light = Sphere(0.5, parent=world, transform=translate(0, 2, -1),
material=UniformSurfaceEmitter(d65_white, scale=2))
# Give the prism a high importance to ensure adequate sampling
prism.material.importance = 9
rgb = RGBPipeline2D()
# create and setup the camera
camera = PinholeCamera((512, 256), fov=45, parent=world, pipelines=[rgb])
camera.transform = translate(0, 0.05, -0.05) * rotate(180, -65, 0) * translate(0, 0, -0.75)
camera.ray_importance_sampling = True
camera.ray_important_path_weight = 0.75
camera.ray_max_depth = 500
camera.ray_extinction_prob = 0.01
camera.spectral_bins = 32
camera.spectral_rays = 32
camera.pixel_samples = 100
# start ray tracing
plt.ion()
for p in range(0, 1000):
print("Rendering pass {}".format(p+1))
camera.observe()
rgb.save("prisms_{}.png".format(p+1))
print()
# display final result