public void addLOSEvent(MouseEvent event){
  graphics.clear();
  LOSedge=TerrainLayer.numPixelsBetween(LOScenterP.x,LOScenterP.y,event.getX(),event.getY()) * 2 + 1;
  LOScirc.setWidth(LOSedge);
  LOScirc.setHeight(LOSedge);
  LOScirc.generate(proj);
  graphics.add(LOScirc);
}

public void addLOSEvent ( MouseEvent event ) { graphics . clear ( ) ; LOSedge = TerrainLayer . numPixelsBetween ( LOScenterP . x , LOScenterP . y , event . getX ( ) , event . getY ( ) ) * 2 + 1 ; LOScirc . setWidth ( LOSedge ) ; LOScirc . setHeight ( LOSedge ) ; LOScirc . generate ( proj ) ; graphics . add ( LOScirc ) ; }
used to modify the circle parameters with another mouse event . takes care of resetting hte circle parameters and regenerating the circle .
