|      2  |      2  | 
|      3 from raytracer import Raytracer, Material, Box, Sphere, Light |      3 from raytracer import Raytracer, Material, Box, Sphere, Light | 
|      4 import Image |      4 import Image | 
|      5  |      5  | 
|      6 rt = Raytracer() |      6 rt = Raytracer() | 
|      7 rt.ambientocclusion(samples=100, distance=16.0, angle=0.5) |      7 rt.ambientOcclusion(samples=100, distance=16.0, angle=0.5) | 
|      8  |      8  | 
|      9 light1 = Light(position=(0.0, 5.0, -5.0), colour=(0.7, 0.3, 0.6)) |      9 light1 = Light(position=(0.0, 5.0, -5.0), colour=(0.7, 0.3, 0.6)) | 
|     10 light1.castshadows(False) |     10 light1.castShadows(False) | 
|     11 rt.addlight(light1) |     11 rt.addLight(light1) | 
|     12  |     12  | 
|     13 light2 = Light(position=(-2.0, 10.0, -2.0), colour=(0.4, 0.6, 0.3)) |     13 light2 = Light(position=(-2.0, 10.0, -2.0), colour=(0.4, 0.6, 0.3)) | 
|     14 light2.castshadows(False) |     14 light2.castShadows(False) | 
|     15 rt.addlight(light2) |     15 rt.addLight(light2) | 
|     16  |     16  | 
|     17 mat0 = Material(colour=(0.7, 0.7, 0.7)) |     17 mat0 = Material(colour=(0.7, 0.7, 0.7)) | 
|     18  |     18  | 
|     19 box = Box(L=(-20.0, -1.2, -20.0), H=(20.0, -1.0, 20.0), material=mat0) |     19 box = Box(L=(-20.0, -1.2, -20.0), H=(20.0, -1.0, 20.0), material=mat0) | 
|     20 rt.addshape(box) |     20 rt.addShape(box) | 
|     21  |     21  | 
|     22 mat1 = Material(colour=(1.0, 0.0, 0.0)) |     22 mat1 = Material(colour=(1.0, 0.0, 0.0)) | 
|     23 bigsphere = Sphere(centre=(3.0, 2.0, -7.0), radius=3.0, material=mat1) |     23 bigsphere = Sphere(centre=(3.0, 2.0, -7.0), radius=3.0, material=mat1) | 
|     24 rt.addshape(bigsphere) |     24 rt.addShape(bigsphere) | 
|     25  |     25  | 
|     26 mat2 = Material(colour=(0.0, 1.0, 0.0)) |     26 mat2 = Material(colour=(0.0, 1.0, 0.0)) | 
|     27 smallsphere = Sphere(centre=(-5.5, 1.5, -8.0), radius=2.0, material=mat2) |     27 smallsphere = Sphere(centre=(-5.5, 1.5, -8.0), radius=2.0, material=mat2) | 
|     28 rt.addshape(smallsphere) |     28 rt.addShape(smallsphere) | 
|     29  |     29  | 
|     30 mat3 = Material(colour=(0.0, 0.0, 1.0)) |     30 mat3 = Material(colour=(0.0, 0.0, 1.0)) | 
|     31 tinysphere = Sphere(centre=(-1.2, 0.0, -2.0), radius=0.5, material=mat3) |     31 tinysphere = Sphere(centre=(-1.2, 0.0, -2.0), radius=0.5, material=mat3) | 
|     32 rt.addshape(tinysphere) |     32 rt.addShape(tinysphere) | 
|     33  |     33  | 
|     34 imagesize = (800, 600) |     34 imagesize = (800, 600) | 
|     35 data = rt.render(imagesize) |     35 data = rt.render(imagesize) | 
|     36 img = Image.fromstring("RGB", imagesize, data) |     36 img = Image.fromstring("RGB", imagesize, data) | 
|     37 img.save('spheres_ao.png') |     37 img.save('spheres_ao.png') |