def main():
# image dimensions (pixel)
nx = 200
ny = 100
# number of samples (rays) per pixel
ns = 100
# define camera
lookfrom = np.array([-3., 3., 3.])
lookat = np.array([0., 0., 0.])
vfov = np.pi/9
aperture = 1.
focus_dist = np.linalg.norm(lookat - lookfrom)
cam = Camera(lookfrom, lookat, np.array([0., 1., 0.]), vfov, nx / ny, aperture, focus_dist)
# define scene geometry
scene = SurfaceAssembly()
scene.add_object(Sphere(np.array([ 0., 0., 0.]), 0.5, Lambertian(np.array([0.1, 0.2, 0.5]))))
scene.add_object(Sphere(np.array([ 1., 0., 0.]), 0.5, Metal(np.array([0.8, 0.6, 0.2]), 1.0)))
# imitate hollow glass sphere
scene.add_object(Sphere(np.array([-1., 0., 0.]), 0.5, Dielectric(1.5)))
scene.add_object(Sphere(np.array([-1., 0., 0.]), -0.45, Dielectric(1.5)))
# large sphere imitating ground floor
scene.add_object(Sphere(np.array([0., -100.5, 0.]), 100., Lambertian(np.array([0.8, 0.8, 0.0]))))
# render image
im = render_image(nx, ny, ns, scene, cam)
imageio.imwrite('depth_of_field.png', im.transpose((1, 0, 2)))
def generate_and_insert_single_image(x,im_hash):
conn = pm.Connection(document_class = SON)
db = conn[DB_NAME]
im_coll = db['images.files']
im_fs = gridfs.GridFS(db,'images')
image_string = rendering.render_image(x['image'])
y = SON([('config',x)])
filename = get_filename(x)
y['filename'] = filename
y['__hash__'] = im_hash
im_fs.put(image_string,**y)
def generate_images(outfile,im_hash,config_gen):
conn = pm.Connection(document_class = SON)
db = conn[DB_NAME]
im_coll = db['images.files']
im_fs = gridfs.GridFS(db,'images')
remove_existing(im_coll,im_fs,im_hash)
X = rendering.config_gen(config_gen)
for (i,x) in enumerate(X):
if (i/100)*100 == i:
print(i,x)
image_string = rendering.render_image(x['image'])
y = SON([('config',x)])
filename = get_filename(x)
y['filename'] = filename
y['__hash__'] = im_hash
im_fs.put(image_string,**y)
createCertificateDict(outfile,{'image_hash':im_hash,'args':config_gen})
def main():
# image dimensions (pixel)
nx = 200
ny = 100
# number of samples (rays) per pixel
ns = 100
# define camera
lookfrom = np.zeros(3)
lookat = np.array([0., 0., -1.])
vfov = np.pi / 2
aperture = 0.
focus_dist = 1.
cam = Camera(lookfrom, lookat, np.array([0., 1., 0.]), vfov, nx / ny,
aperture, focus_dist)
# define scene geometry
scene = SurfaceAssembly()
scene.add_object(
Sphere(np.array([0., 0., -1.]), 0.5,
Lambertian(np.array([0.8, 0.3, 0.3]))))
scene.add_object(
Sphere(np.array([1., 0., -1.]), 0.5,
Metal(np.array([0.8, 0.6, 0.2]), 1.0)))
scene.add_object(
Sphere(np.array([-1., 0., -1.]), 0.5,
Metal(np.array([0.8, 0.8, 0.8]), 0.3)))
# large sphere imitating ground floor
scene.add_object(
Sphere(np.array([0., -100.5, -1.]), 100.,
Lambertian(np.array([0.8, 0.8, 0.0]))))
# render image
im = render_image(nx, ny, ns, scene, cam)
imageio.imwrite('metal_spheres.png', im.transpose((1, 0, 2)))
def main():
# image dimensions (pixel)
nx = 1200
ny = 800
# number of samples (rays) per pixel
ns = 10
# define camera
lookfrom = np.array([13., 2., 3.])
lookat = np.zeros(3)
vfov = np.pi / 9
aperture = 0.1
focus_dist = 10.0
cam = Camera(lookfrom, lookat, np.array([0., 1., 0.]), vfov, nx / ny,
aperture, focus_dist)
# define scene geometry
scene = SurfaceAssembly()
# three large spheres
scene.add_object(
Sphere(np.array([4., 1., 0.]), 1.0, Metal(np.array([0.7, 0.6, 0.5]),
0.)))
scene.add_object(Sphere(np.array([0., 1., 0.]), 1.0, Dielectric(1.5)))
scene.add_object(
Sphere(np.array([-4., 1., 0.]), 1.0,
Lambertian(np.array([0.4, 0.2, 0.1]))))
# smaller spheres with random parameters
for a in range(-11, 12):
for b in range(-11, 12):
center = np.array([
a + 0.9 * np.random.rand(), 0.2 + 0.1 * np.random.rand(),
b + 0.9 * np.random.rand()
])
# random choice between diffusive, metal or dielectric (glass)
choose_mat = np.random.choice(3, p=[0.8, 0.15, 0.05])
if choose_mat == 0:
# diffusive
scene.add_object(
Sphere(
center, 0.2,
Lambertian(np.random.triangular(0., 0.2, 1., size=3))))
elif choose_mat == 1:
# metal
scene.add_object(
Sphere(
center, 0.2,
Metal(0.5 * (1 + np.random.rand(3)),
0.5 * np.random.rand())))
else:
# dielectric (glass)
scene.add_object(Sphere(center, 0.2, Dielectric(1.5)))
# huge sphere imitating ground floor
scene.add_object(
Sphere(np.array([0., -1000., 0.]), 1000.,
Lambertian(np.array([0.5, 0.5, 0.5]))))
# render image
im = render_image(nx, ny, ns, scene, cam)
imageio.imwrite('random_scene.png', im.transpose((1, 0, 2)))
