OrthographicCamera {
    center 0 0 10 
    direction 0 0 -1
    up 0.5 1 0
    size 5
}

Background { color 0.2 0.2 0.2 }

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

Group {
    numObjects 5

    MaterialIndex 0
    Sphere {
	center 0 0 0 
        radius 1 
    }

    MaterialIndex 1
    Sphere {
	center 1 1 1 
        radius 0.75
    }
    Sphere {
	center -1 -1 1 
        radius 0.75
    }

    MaterialIndex 2
    Sphere {
	center -1 1 -1 
        radius 0.75
    }
    Sphere {
	center 1 -1 -1 
        radius 0.75 
    }
}