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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 } } ] }