Convert an SFRotation orientation to an SFVec3f direction

proto.OrientationToDirection.wrl

#VRML V2.0 utf8

#
# Convert an SFRotation orientation to an SFVec3f direction
#
PROTO OrientationToDirection [
	eventIn		SFRotation		set_orientation
	eventOut	SFVec3f			direction_changed
]{
	Script {
		field		SFVec3f			forward				0 0 -1
		eventIn		SFRotation		set_orientation			IS set_orientation
		eventOut	SFVec3f			direction_changed		IS direction_changed

		directOutput TRUE
		url "javascript:

		function set_orientation(value){
			direction_changed = value.multVec(forward);
		}
	
		"
	}
}