code: public void setOrtho(double left, double right, double bottom, double top,
  			double near, double far) {
  		matrixMode(MatrixMode.PROJECTION);
  		resetMatrix();
  		gl.glOrtho(left, right, bottom, top, near, far);
  		matrixMode(MatrixMode.MODELVIEW);
  		resetMatrix();
  	}
docs: Sets an orthographic projection and defines a parallel clipping volume. All objects with the same
  dimension appear the same size, regardless of whether they are near or far from the camera. The parameters
  to this function specify the clipping volume where left and right are the minimum and maximum x values,
  top and bottom are the minimum and maximum y values, and near and far are the minimum and maximum z values.
  
  @param left
  left plane of the clipping volume
  @param right
  right plane of the clipping volume
  @param bottom
  bottom plane of the clipping volume
  @param top
  top plane of the clipping volume
  @param near
  maximum distance from the origin to the viewer
  @param far
  maximum distance from the origin away from the viewer