public void reshape(GLAutoDrawable drawable, int xstart, int ystart, int width, int height) {
GL2 gl = drawable.getGL().getGL2();
height = (height == 0) ? 1 : height;
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45, (float) width / height, 1, 1000);
gl.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
gl.glLoadIdentity();
}
/** Creates new evaluator */
public GL2SurfaceEvaluator() {
gl = GLUgl2.getCurrentGL2();
}