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- Applets : 3D : Kugel 2 -

Eine Kugel mit Beleuchtungs-Effekt als Java-Applet.

Kugel2.java

import java.awt.*;
import java.awt.geom.*;
import java.applet.*;

public class Kugel2 extends Applet {

    public void init() {
        setBackground(new Color(255,255,255));
    }

    Image buffer;
    Graphics2D gBuffer;

    AffineTransform at;

    public void paint(Graphics g) {

        // Double-Buffering
        if (buffer==null) {
            buffer=createImage(this.getSize().width, this.getSize().height);
            gBuffer=(Graphics2D)buffer.getGraphics();
        }

        // Antialiasing
        gBuffer.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
            RenderingHints.VALUE_ANTIALIAS_ON);

        // Neigung um 30 Grad
        at = AffineTransform.getRotateInstance(Math.toRadians(-30),200,200);
        gBuffer.setTransform(at);

        // Blaue Scheibe
        gBuffer.setColor(new Color(0,0,255));
        gBuffer.fillOval(110,110,180,180);

        // Schatten
        for (int i=0;i<91;i++) {
            gBuffer.setColor(new Color(0,0,165+(int)(90*Math.sin(Math.toRadians(i)))));
            gBuffer.fillArc(111+(int)((90-(90*Math.cos(Math.toRadians(i))))),111,
                            (int)(178*Math.cos(Math.toRadians(i))),178,90,180);
        }

        // Lichtfleck
        for (int i=0;i<30;i++) {
            gBuffer.setColor(new Color(0+6*i,0+6*i,255));
            gBuffer.fillOval(220+i,175+i,(int)(45-3/2.0*i),60-2*i);
        }

        g.drawImage (buffer,0,0,this);
    }
}

Download  Kugel_2.zip (Applet und Code, ca. 2 kb)

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