Three.js snippet for creating a checkerboard plane. Good for use as a floor in demos.

checkerboard.js.coffee

# Build a checkerboard colored square plane with "segments" number of tiles per side.
# Using three.js v62
checkerboard = (segments=8) ->
  geometry = new THREE.PlaneGeometry(100, 100, segments, segments)
  materialEven = new THREE.MeshBasicMaterial(color: 0xccccfc)
  materialOdd = new THREE.MeshBasicMaterial(color: 0x444464)
  materials = [materialEven, materialOdd]

  for x in [0...segments]
    for y in [0...segments]
      i = x * segments + y
      j = 2 * i
      geometry.faces[ j ].materialIndex = geometry.faces[ j + 1 ].materialIndex = (x + y) % 2

  new THREE.Mesh(geometry, new THREE.MeshFaceMaterial(materials))