---
materials:
  left:
    Lambertian:
      color:
        data: [ 0.0, 0.0, 1.0 ]

  right:
    Lambertian:
      color:
        data: [ 1.0, 0.0, 0.0 ]

geometry:
  - Sphere:
      pos:
        data: [ -0.707, 0.0, -1.0 ]
      radius: 0.707
      material: left

  - Sphere:
      pos:
        data: [ 0.707, 0.0, -1.0 ]
      radius: 0.707
      material: right