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Figure 31.9
A SpinGroup node type used to automatically spin a group of three boxes. |
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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
PROTO SpinGroup [
exposedField MFNode children [ ]
exposedField SFTime cycleInterval 1.0
exposedField SFBool loop FALSE
exposedField SFTime startTime 0.0
exposedField SFTime stopTime 0.0
] {
DEF SpinMe Transform {
children IS children
},
DEF Clock TimeSensor {
cycleInterval IS cycleInterval
loop IS loop
startTime IS startTime
stopTime IS stopTime
},
DEF Spinner OrientationInterpolator {
key [ 0.0, 0.5, 1.0 ]
keyValue [
0.0 1.0 0.0 0.0,
0.0 1.0 0.0 3.14,
0.0 1.0 0.0 6.28
]
},
ROUTE Clock.fraction_changed TO Spinner.set_fraction
ROUTE Spinner.value_changed TO SpinMe.set_rotation
}
SpinGroup {
cycleInterval 4.0
loop TRUE
children [
Shape {
appearance DEF Green Appearance {
material Material { diffuseColor 0.0 1.0 0.3 }
}
geometry Box { size 25.0 2.0 2.0 }
},
Shape {
appearance USE Green
geometry Box { size 2.0 25.0 2.0 }
},
Shape {
appearance USE Green
geometry Box { size 2.0 2.0 25.0 }
}
]
}