package net.test;

import java.io.File;

import org.lwjgl.LWJGLException;
import org.lwjgl.LWJGLUtil;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.glu.GLU;

public class Main {
    // Entry point for the application
    public static void main(String[] args) {
        System.setProperty("org.lwjgl.librarypath",
                new File(new File(System.getProperty("user.dir"), "native"),
                        LWJGLUtil.getPlatformName()).getAbsolutePath());
        new Main();
    }

    private final String WINDOW_TITLE = "CubeTest";
    private final int WIDTH = 640;
    private final int HEIGHT = 360;

    private Container cont;

    public static int superCount;

    public Main() {
        this.setupOpenGL();

        cont = new Container();
        cont.setVertices(new Vertex[] { new Vertex(0.0f, 0.5f, 0.0f),
                new Vertex(-0.5f, -0.5f, 0.0f), new Vertex(0.5f, -0.5f, 0.0f) });
        cont.setIndices(new byte[] { 0, 1, 2 });

        while (!Display.isCloseRequested()) {
            this.ready3D();
            this.loopCycle();

            Display.sync(60);
            Display.update();
        }

        cont.destroyResources();

        Display.destroy();
    }

    public void setupOpenGL() {
        try {
            Display.setDisplayMode(new DisplayMode(WIDTH, HEIGHT));
            Display.setTitle(WINDOW_TITLE);
            Display.create();
        } catch (LWJGLException e) {
            e.printStackTrace();
            System.exit(-1);
        }

        GL11.glClearColor(0.4f, 0.6f, 0.9f, 0f);
    }

    private void ready3D() {
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);

        GL11.glViewport(0, 0, WIDTH, HEIGHT);
        GL11.glMatrixMode(GL11.GL_PROJECTION);

        GL11.glLoadIdentity();
        GLU.gluPerspective(60, (float) WIDTH / HEIGHT, 0.1f, 10.0f);

        GL11.glMatrixMode(GL11.GL_MODELVIEW);
        GL11.glLoadIdentity();
    }

    public void loopCycle() {
        superCount++;

        float sinOff = (float) Math.sin(superCount / 30f) / 2f, cosOff = (float) Math
                .cos(superCount / 30f) / 2f;

        cont.setVertices(new Vertex[] {
                new Vertex(0.0f, 0.5f, cosOff).setRGB(1, 0.6f, 0.2f),
                new Vertex(-0.5f, -0.5f, 0.0f), new Vertex(0.5f, -0.5f, 0.0f) });
        cont.setIndices(new byte[] { 0, 1, 2 });

        cont.render();
    }
}