text: from sightpy import *
  
  # define materials to use
  
  floor = Glossy(diff_color = image("checkered_floor.png", repeat = 2.),  roughness = 0.2, spec_coeff = 0.3, diff_coeff = 0.7, n = vec3(2.2, 2.2, 2.2)) # n = index of refraction
  green_glass = Refractive(n = vec3(1.5 + 4e-8j,1.5 + 0.j,1.5 + 4e-8j)) 
  
  
  # Set Scene 
  
  Sc = Scene()
  Sc.add_Camera(look_from = vec3(0., 0.25, 1. ), look_at = vec3(0., 0.25, -3.),
  	          screen_width = 3840 ,
  	          screen_height = 2160)
  
  
  Sc.add_DirectionalLight(Ldir = vec3(0.0,0.5, 0.5),  color = rgb(0.5, 0.5, 0.5))
  
  Sc.add(Plane(material = floor,  center = vec3(0, -0.5, -3.0), width = 6.0,height = 6.0, u_axis = vec3(1.0, 0, 0), v_axis = vec3(0, 0, -1.0) , max_ray_depth = 5))
  
  
  cb = Cuboid( material = green_glass, center = vec3(0.00, 0.0001, -0.8), width = 0.9,height = 1.0, length = 0.4, shadow = False,  max_ray_depth = 5)
  cb.rotate(θ = 30, u = vec3(0,1,0))
  Sc.add(cb)
  
  
  #see sightpy/backgrounds
  Sc.add_Background("stormydays.png")
  
  # Render 
  img = Sc.render(samples_per_pixel = 8)
  
  #img.save("EXAMPLE3.png")
  
  #img.show()