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Chapter 8: Animating Position, Orientation, and Scale

../ch08/08fig04.gif
Figure 8.4

An animation that rotates a coordinate system and the column built within it.

08fig04.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 [
    # Rotating cylinder
        DEF Column Transform {
            rotation 0.0 0.0 1.0 0.0
            children Shape {
                appearance Appearance {
                    material Material { }
                }
                geometry Cylinder {
                    height 1.0
                    radius 0.2
                }
            }
        },
    # Animation clock
        DEF Clock TimeSensor {
            cycleInterval 4.0
            loop TRUE
        },
    # Animation path
        DEF ColumnPath OrientationInterpolator {
            key [ 0.0, 0.50, 1.0 ]
            keyValue [
                0.0 0.0 1.0  0.0,
                0.0 0.0 1.0  3.14,
                0.0 0.0 1.0  6.28
            ]
        }
    ]
}
ROUTE Clock.fraction_changed   TO ColumnPath.set_fraction
ROUTE ColumnPath.value_changed TO Column.set_rotation