code: public void matrixMode(MatrixMode mode) {
  		switch (mode) {
  		case PROJECTION:
  			gl.glMatrixMode(GL2.GL_PROJECTION);
  			break;
  		case MODELVIEW:
  			gl.glMatrixMode(GL2.GL_MODELVIEW);
  			break;
  		default:
  			break;
  		}
  	}
docs: Sets the MatrixMode.
  
  @param mode
  Either PROJECTION or MODELVIEW