Get the window like this:
import com.jogamp.newt.opengl.GLWindow;
window = (GLWindow) surface.getNative();
window.setResizable(true);
Then at the top of draw(), include something like this:
window.setSize(max(window.getWidth(), minWidth), max(window.getHeight(), minHeight));
… as there doesn’t seem to be a way to set minimum dimensions on the window object:
