"Tables" (Scene description)

Following is the scene description for the image at the start of chapter 12, "Cubes". It renders the following picture, constructed entirely of cubes:



As with the other scenes I've shared here, it described in YAML format, which is hopefully self-explanatory, but if something doesn't make sense, please let me know. Also, note that the cube labeled "glass cube" (the yellow one in the middle of the table) employs an optional feature: it casts no shadow, by opting out of the shadow tests. If you have not implemented this optional feature in your own ray tracer, just ignore the "shadow: false" line in the scene description, below.


# ======================================================
# table.yml
#
# This file describes the scene illustrated at the start
# of chapter 12, "Cubes", in "The Ray Tracer Challenge"
#
# by Jamis Buck <[email protected]>
# ======================================================

# ======================================================
# the camera
# ======================================================

- add: camera
 width: 400
 height: 200
 field-of-view: 0.785
 from: [8, 6, -8]
 to: [0, 3, 0]
 up: [0, 1, 0]

# ======================================================
# light sources
# ======================================================

- add: light
 at: [0, 6.9, -5]
 intensity: [1, 1, 0.9]

# ======================================================
# describe the elements of the scene
# ======================================================

# floor/ceiling
- add: cube
 transform:
   - [ translate, 0, 1, 0 ]
   - [ scale, 20, 7, 20 ]
 material:
   pattern:
     type: checkers
     colors:
       - [0, 0, 0]
       - [0.25, 0.25, 0.25]
     transform:
       - [ scale, 0.07, 0.07, 0.07 ]
   ambient: 0.25
   diffuse: 0.7
   specular: 0.9
   shininess: 300
   reflective: 0.1

# walls
- add: cube
 transform:
   - [ scale, 10, 10, 10 ]
 material:
   pattern:
     type: checkers
     colors:
       - [ 0.4863, 0.3765, 0.2941 ]
       - [ 0.3725, 0.2902, 0.2275 ]
     transform:
       - [ scale, 0.05, 20, 0.05 ]
   ambient: 0.1
   diffuse: 0.7
   specular: 0.9
   shininess: 300
   reflective: 0.1

# table top
- add: cube
 transform:
   - [ scale, 3, 0.1, 2 ]
   - [ translate, 0, 3.1, 0 ]
 material:
   pattern:
     type: stripes
     colors:
       - [ 0.5529, 0.4235, 0.3255 ]
       - [ 0.6588, 0.5098, 0.4000 ]
     transform:
       - [ rotate-y, 0.1 ]
       - [ scale, 0.05, 0.05, 0.05 ]
   ambient: 0.1
   diffuse: 0.7
   specular: 0.9
   shininess: 300
   reflective: 0.2

# leg #1
- add: cube
 transform:
   - [ scale, 0.1, 1.5, 0.1 ]
   - [ translate, 2.7, 1.5, -1.7 ]
 material:
   color: [ 0.5529, 0.4235, 0.3255 ]
   ambient: 0.2
   diffuse: 0.7

# leg #2
- add: cube
 transform:
   - [ scale, 0.1, 1.5, 0.1 ]
   - [ translate, 2.7, 1.5, 1.7 ]
 material:
   color: [ 0.5529, 0.4235, 0.3255 ]
   ambient: 0.2
   diffuse: 0.7

# leg #3
- add: cube
 transform:
   - [ scale, 0.1, 1.5, 0.1 ]
   - [ translate, -2.7, 1.5, -1.7 ]
 material:
   color: [ 0.5529, 0.4235, 0.3255 ]
   ambient: 0.2
   diffuse: 0.7

# leg #4
- add: cube
 transform:
   - [ scale, 0.1, 1.5, 0.1 ]
   - [ translate, -2.7, 1.5, 1.7 ]
 material:
   color: [ 0.5529, 0.4235, 0.3255 ]
   ambient: 0.2
   diffuse: 0.7

# glass cube
- add: cube
 transform:
   - [ scale, 0.25, 0.25, 0.25 ]
   - [ rotate-y, 0.2 ]
   - [ translate, 0, 3.45001, 0 ]
 shadow: false
 material:
   color: [1, 1, 0.8]
   ambient: 0
   diffuse: 0.3
   specular: 0.9
   shininess: 300
   reflective: 0.7
   transparency: 0.7
   refractive-index: 1.5

# little cube #1
- add: cube
 transform:
   - [ scale, 0.15, 0.15, 0.15 ]
   - [ rotate-y, -0.4 ]
   - [ translate, 1, 3.35, -0.9 ]
 material:
   color: [1, 0.5, 0.5]
   reflective: 0.6
   diffuse: 0.4

# little cube #2
- add: cube
 transform:
   - [ scale, 0.15, 0.07, 0.15 ]
   - [ rotate-y, 0.4 ]
   - [ translate, -1.5, 3.27, 0.3 ]
 material:
   color: [1, 1, 0.5]

# little cube #3
- add: cube
 transform:
   - [ scale, 0.2, 0.05, 0.05 ]
   - [ rotate-y, 0.4 ]
   - [ translate, 0, 3.25, 1 ]
 material:
   color: [0.5, 1, 0.5]

# little cube #4
- add: cube
 transform:
   - [ scale, 0.05, 0.2, 0.05 ]
   - [ rotate-y, 0.8 ]
   - [ translate, -0.6, 3.4, -1 ]
 material:
   color: [0.5, 0.5, 1]

# little cube #5
- add: cube
 transform:
   - [ scale, 0.05, 0.2, 0.05 ]
   - [ rotate-y, 0.8 ]
   - [ translate, 2, 3.4, 1 ]
 material:
   color: [0.5, 1, 1]

# frame #1
- add: cube
 transform:
   - [ scale, 0.05, 1, 1 ]
   - [ translate, -10, 4, 1 ]
 material:
   color: [ 0.7098, 0.2471, 0.2196 ]
   diffuse: 0.6

# frame #2
- add: cube
 transform:
   - [ scale, 0.05, 0.4, 0.4 ]
   - [ translate, -10, 3.4, 2.7 ]
 material:
   color: [ 0.2667, 0.2706, 0.6902 ]
   diffuse: 0.6

# frame #3
- add: cube
 transform:
   - [ scale, 0.05, 0.4, 0.4 ]
   - [ translate, -10, 4.6, 2.7 ]
 material:
   color: [ 0.3098, 0.5961, 0.3098 ]
   diffuse: 0.6

# mirror frame
- add: cube
 transform:
   - [ scale, 5, 1.5, 0.05 ]
   - [ translate, -2, 3.5, 9.95 ]
 material:
   color: [ 0.3882, 0.2627, 0.1882 ]
   diffuse: 0.7

# mirror
- add: cube
 transform:
   - [ scale, 4.8, 1.4, 0.06 ]
   - [ translate, -2, 3.5, 9.95 ]
 material:
   color: [0, 0, 0]
   diffuse: 0
   ambient: 0
   specular: 1
   shininess: 300
   reflective: 1