cylindersensor

CylinderSensor {
  exposedField SFBool     autoOffset TRUE
  exposedField SFFloat    diskAngle  0.262
  exposedField SFBool     enabled    TRUE
  exposedField SFFloat    maxAngle   -1
  exposedField SFFloat    minAngle   0
  exposedField SFFloat    offset     0
  eventOut     SFBool     isActive
  eventOut     SFRotation rotation_changed
  eventOut     SFVec3f    trackPoint_changed
}

• Used for rotating an object about one axis
• Geometry can be anything, not just cylinder
• offset field used to keep track of last drag effect
• autoOffset field set to FALSE means geometry jumps to initial postion each new drag event

Example