定義

Collision { 
  eventIn      MFNode   addChildren
  eventIn      MFNode   removeChildren
  exposedField MFNode   children        []
  exposedField SFBool   collide         TRUE
  field        SFVec3f  bboxCenter      0 0 0      # (-,)
  field        SFVec3f  bboxSize        -1 -1 -1   # (0,) or -1,-1,-1
  field        SFNode   proxy           NULL
  eventOut     SFTime   collideTime
}

サンプル

#VRML V2.0 utf8
DEF Obj Transform { children Viewpoint {description "move"}}
Viewpoint {description "still"}
DEF Polator PositionInterpolator {
 key [0, .5, 1]
 keyValue [0 0 0, 0 0 -8.8,0 0 0]
}
DEF Senser TimeSensor {
  loop TRUE
  cycleInterval 10
  stopTime -1
}
DEF Col Collision {
 children Transform {
  children [Shape { geometry Sphere {}
                   appearance Appearance {
                     material DEF Mat Material {}}}
  ]
 } 
}
DEF Sensor2 TimeSensor {
  loop FALSE
  cycleInterval 5
}
DEF Polator2 ColorInterpolator {
 key [0, .25, .5, .75, 1]
 keyValue [1 1 1, 1 0 0, 0 1 0, 0 0 1, 1 1 1]
}

ROUTE Senser.fraction_changed TO Polator.set_fraction
ROUTE Polator.value_changed TO Obj.set_translation
ROUTE Col.collideTime TO Sensor2.set_startTime
ROUTE Sensor2.fraction_changed TO Polator2.set_fraction
ROUTE Polator2.value_changed TO Mat.set_diffuseColor