example_cornellbox.py

from sightpy import *

# Set Scene 
Sc = Scene(ambient_color=rgb(0., 0., 0.))
Sc.add_Camera(
	screen_width=400, screen_height=600, 
	look_from=vec3(278, 278, 800), look_at=vec3(278, 278, 0), 
	focal_distance=1., field_of_view=35
)
angle = -0

# define materials to use
green_diffuse = Diffuse(diff_color=rgb(.12, .45, .15))
red_diffuse = Diffuse(diff_color=rgb(.65, .05, .05))
white_diffuse = Diffuse(diff_color=rgb(.73, .73, .73))
emissive_white = Emissive(color=rgb(15., 15., 15.))
emissive_blue = Emissive(color=rgb(2., 2., 3.5))
blue_glass = Refractive(n=vec3(1.5 + 0.05e-8j, 1.5 + 0.02e-8j, 1.5 + 0.j))

# this is the light
Sc.add(
	Plane(
		material=emissive_white, center=vec3(213 + 130. / 2., 554, -227.0 - 105. / 2.), 
  		width=130.0, height=105.0, 
    	u_axis=vec3(1.0, 0.0, 0.0), v_axis=vec3(0.0, 0.0, 1.0)
 	), 
	importance_sampled=True
)
Sc.add(
	Plane(
		material=white_diffuse, center=vec3(555.0 / 2.0, 555.0 / 2.0, -555.0), 
  		width=555.0, height=555.0, 
    	u_axis=vec3(0.0, 1.0, 0), v_axis=vec3(1.0, 0.0, 0.0)
	)
)
Sc.add(
	Plane(
		material=green_diffuse, center=vec3(0.0, 555.0 / 2.0, -555.0 / 2.0), 
  		width=555.0, height=555.0,
    	u_axis=vec3(0.0, 1.0, 0.0), v_axis=vec3(0.0, 0.0, -1.0)
	)
)
Sc.add(
	Plane(
		material=red_diffuse, center=vec3(555.0, 555.0 / 2.0, -555.0 / 2.0), 
  		width=555.0, height=555.0,
    	u_axis=vec3(0.0, 1.0, 0.0), v_axis=vec3(0.0, 0.0, -1.0)
	)
)
Sc.add(
	Plane(
		material=white_diffuse, center=vec3(555.0 / 2.0, 555.0, -555.0 / 2.0), 
  		width=555.0, height=555.0,
    	u_axis=vec3(1.0, 0.0, 0.0), v_axis=vec3(0.0, 0.0, -1.0)
	)
)
Sc.add(
	Plane(
		material=white_diffuse, center=vec3(555.0 / 2.0, 0.0, -555.0 / 2.0), 
  		width=555.0, height=555.0,
    	u_axis=vec3(1.0, 0.0, 0.0), v_axis=vec3(0.0, 0.0, -1.0)
	)
)

cb = Cuboid(
	material=white_diffuse, center=vec3(182.5, 165.0, -285.0 - 160.0 / 2.0), 
 	width=165.0, height=165. * 2., length=165., shadow=True
)
cb.rotate(theta=15, u=vec3(0, 1, 0))
Sc.add(cb)

Sc.add(
	Sphere(
		material=blue_glass, center=vec3(370.5, 165. / 2., -65. - 185. / 2.), radius=165. / 2., 
  		shadow=True, max_ray_depth=5
	),
	importance_sampled=True
)

# Render 
img = Sc.render(samples_per_pixel=10, progress_bar=True)
# you are going to need more than 10 samples to remove the noise. At least 1000 for a nice image.
img.save("cornell_box.png")
img.show()