Figure 9.3 A cube that translates in the XY plane when the viewer drags it.
09fig03.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 [
        DEF Cube Transform {
            children Shape {
                appearance Appearance {
                    material Material { }
                }
                geometry Box { }
            }
        },
        DEF Sensor PlaneSensor { }
    ]
}
ROUTE Sensor.translation_changed TO Cube.set_translation