public override void skipTo(float timelineTime)
 {
     line        = PropSimObject.getElement(LineProp.BehaviorName) as LineProp;
     line.Length = length;
     line.Color  = color;
     line.createLine();
 }
 public override void editing(PropEditController propEditController)
 {
     if (PropSimObject != null)
     {
         line        = PropSimObject.getElement(LineProp.BehaviorName) as LineProp;
         line.Length = length;
         line.Color  = color;
         line.createLine();
     }
 }
 public override void editingCompleted(PropEditController propEditController)
 {
     line = null;
 }