OrthographicCamera {
    center 0 0 5
    direction 0 0 -1  
    up 0 1 0
    size 5
}

Background { color 0 0 0 }

Materials {
    numMaterials 3
    PhongMaterial {
        diffuseColor 1 0 0
    }
    PhongMaterial {
        diffuseColor 0 1 0
    }
    PhongMaterial {
        diffuseColor 0 0 1
    }
}

Group {
    numObjects 3
    MaterialIndex 0
    Sphere {
	center -1 0 -1
        radius 1 
    }
    MaterialIndex 1
    Sphere {
	center 0 0 0
        radius 1 
    }
    MaterialIndex 2
    Sphere {
	center 1 0 1
        radius 1 
    }
}