Figure 20.17a A simple world without fake shadows. Compare with Figure 20.17b.
20fig17a.wrl	Click on the image to view the VRML scene.

#VRML V2.0 utf8
# The VRML 2.0 Sourcebook
# Copyright (c) 1997
# Andrea L. Ames, David R. Nadeau, and John L. Moreland
Group {
    children [
    # Lighting
        DirectionalLight {
            direction 0.0 -1.0 0.0
            ambientIntensity 0.5
        },
    # Floor
        Shape {
            appearance Appearance {
                material Material { }
            }
            geometry Box { size 8.0 0.01 8.0 }
        },
    # Spheres
        Transform {
            translation 0.0 4.0 2.0
            children Shape {
                appearance Appearance {
                    material Material { diffuseColor 1.0 1.0 0.0 }
                }
                geometry Sphere { }
            }
        },
        Transform {
            translation 2.0 2.0 -2.0
            children Shape {
                appearance Appearance {
                    material Material { diffuseColor 0.0 1.0 0.0 }
                }
                geometry Sphere { radius 2.0 }
            }
        },
        Transform {
            translation -2.0 2.5 0.0
            children Shape {
                appearance Appearance {
                    material Material { diffuseColor 0.0 1.0 1.0 }
                }
                geometry Sphere { radius 0.75 }
            }
        }
    ]
}