---
materials:
  grass:
    Lambertian:
      color:
        data: [ 0.8, 0.8, 0.0 ]

  center:
    Lambertian:
      color:
        data: [ 0.1, 0.2, 0.5 ]

  left:
    Dialectric:
      refraction_index: 1.5

  right:
    Metal:
      color:
        data: [ 0.8, 0.6, 0.2]
      fuzz: 0.0

geometry:
  - Sphere:
      pos:
        data: [ 0.0, -100.5, -1.0 ]
      radius: 100.0
      material: grass

  - Sphere:
      pos:
        data: [ 0.0, 0.0, -1.0 ]
      radius: 0.5
      material: center

  - Sphere:
      pos:
        data: [ -1.0, 0.0, -1.0 ]
      radius: 0.5
      material: left

  - Sphere:
      pos:
        data: [ -1.0, 0.0, -1.0 ]
      radius: -0.4
      material: left

  - Sphere:
      pos:
        data: [ 1.0, 0.0, -1.0 ]
      radius: -0.5
      material: right