private void renderProcessWall(ExecutionUnit process,Graphics2D g2){
  double width=model.getProcessWidth(process);
  double height=model.getProcessHeight(process);
  Shape wall=new Rectangle2D.Double(width,-10,2 * WALL_WIDTH - 1,height + 20);
  g2.setColor(Colors.WINDOW_BACKGROUND);
  g2.fill(wall);
  g2.setColor(Colors.TEXTFIELD_BORDER);
  g2.draw(wall);
}

private void renderProcessWall ( ExecutionUnit process , Graphics2D g2 ) { double width = model . getProcessWidth ( process ) ; double height = model . getProcessHeight ( process ) ; Shape wall = new Rectangle2D . Double ( width , - 10 , 2 * WALL_WIDTH - 1 , height + 20 ) ; g2 . setColor ( Colors . WINDOW_BACKGROUND ) ; g2 . fill ( wall ) ; g2 . setColor ( Colors . TEXTFIELD_BORDER ) ; g2 . draw ( wall ) ; }
draws a wall ( grey bar ) right to the process box . used for operator chains with multiple units .
