package com.marginallyclever.robotoverlord.renderpanel;

import com.jogamp.opengl.*;
import com.jogamp.opengl.awt.GLJPanel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.swing.*;
import java.awt.*;

public class OpenGLTestMinimal {
    private static final Logger logger = LoggerFactory.getLogger(OpenGLTestMinimal.class);
    private final JPanel panel = new JPanel(new BorderLayout());
    protected final GLJPanel glCanvas;

    public OpenGLTestMinimal() {
        super();
        logger.info("\n"+ JoglVersion.getInstance());

        glCanvas = createCanvas();
        panel.setMinimumSize(new Dimension(300, 300));
        panel.add(glCanvas, BorderLayout.CENTER);
    }

    private GLJPanel createCanvas() {
        GLJPanel canvas = null;
        try {
            GLCapabilities capabilities = getCapabilities();
            StringBuilder sb = new StringBuilder();
            capabilities.toString(sb);
            logger.info("capabilities="+sb);

            canvas = new GLJPanel(capabilities);
        } catch(GLException e) {
            logger.error("Failed to get/set Capabilities.  Are your native drivers missing?");
        }
        return canvas;
    }

    public GLJPanel getGlCanvas() {
        return glCanvas;
    }

    private GLCapabilities getCapabilities() {
        GLProfile profile = GLProfile.getMaxProgrammable(true);
        GLCapabilities capabilities = new GLCapabilities(profile);
        capabilities.setHardwareAccelerated(true);
        capabilities.setBackgroundOpaque(true);
        capabilities.setDoubleBuffered(true);
        return capabilities;
    }

    public JPanel getPanel() {
        return panel;
    }

    public static void main(String[] args) {
        OpenGLTestMinimal opengl = new OpenGLTestMinimal();

        // make a frame
        JFrame frame = new JFrame( OpenGLTestMinimal.class.getSimpleName());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(opengl.getPanel());
        frame.setPreferredSize(new Dimension(600,600));
        frame.setSize(600,600);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}