BlockWorld.java

package de.skysoldier.blockworld;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;

import javax.swing.JPanel;

import de.skysoldier.graphics3D.Camera;
import de.skysoldier.graphics3D.Graphics3D;
import de.skysoldier.graphics3D.Line3D;
import de.skysoldier.graphics3D.LinedMesh;
import de.skysoldier.graphics3D.Values3D;

public class BlockWorld extends JPanel implements Runnable {

    private Gui gui;

    private LinedMesh cube = new LinedMesh(Values3D.MESH_PRESET_CUBE);

    private Thread thread;
    private Graphics3D g3d;
    private Camera camera;

    public BlockWorld(){
        init();
    }

    public void run(){
        while(true){
            repaint();
            try{Thread.sleep(10);}catch(Exception e){}
        }
    }

    public void paintComponent(Graphics g){
        super.paintComponent(g);
//      g.setColor(Color.RED);
//      g.drawLine(300, 0, 300, 300);
//      g.drawLine(0, 300, 300, 300);
        g.setColor(Color.WHITE);
        g3d.updateRotationDataX(angleX);
        g3d.updateRotationDataY(angleY);
        //the third param (z) doesn't affect anything:
        g3d.updateTranslationData(100, 100, 500);
        for(int i = 0; i < cube.getLineCount(); i++){
            Line3D copy = g3d.renderLine(cube.getLine(i), camera, g3d.getRotationDataX(), g3d.getRotationDataY(), g3d.getTranslationData());
            g3d.drawLine(copy, g);
        }
    }

    private void init(){
        addMouseMotionListener(ml);
        gui = new Gui(this);
        thread = new Thread(this);
        g3d = new Graphics3D();
        g3d.updateTranslationData(300, 300, 0);
        camera = g3d.createCamera(Values3D.CAMERA_PERSPECTIVE);
        camera.active = true;
        start();
    }

    private void start(){
        gui.init();
        thread.start();
    }

    private double angleX = 0;
    private double angleY = 0;
    private Dimension screensize = Toolkit.getDefaultToolkit().getScreenSize();
    private double xperpixel = 360 / screensize.getWidth();
    private double yperpixel = 360 / screensize.getHeight();
    public MouseMotionListener ml = new MouseMotionAdapter() {
        public void mouseDragged(MouseEvent e) {
            angleY = (double) e.getX() * xperpixel;
            angleX = (double) e.getY() * yperpixel;
        }
    };

    public static void main(String[] args) {
        new BlockWorld();
    }
}