/* * @(#)Stars3D.java	1.17 99/04/23 * * Copyright (c) 1998, 1999 by Sun Microsystems, Inc. All Rights Reserved. *  * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. *  * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. *  * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */package demos.Mix;import java.awt.*;import java.awt.event.*;import java.awt.geom.*;import java.awt.font.FontRenderContext;import javax.swing.*;import DemoSurface;import DemoPanel;import CustomControls;/** * Generate a 3D text shape with GeneralPath, render a number of small * multi-colored rectangles and then render the 3D text shape. */public class Stars3D extends DemoSurface implements CustomControls {    private static Color colors[] = { Color.red, Color.green, Color.white };    private static AffineTransform at = AffineTransform.getTranslateInstance(-5, -5);    private Shape shape, tshape;    private Shape ribbon;    protected int fontSize = 72;    protected String text = "J2D";    protected int numStars = 300;    private DemoControls controls;    public Stars3D() {        setBackground(Color.black);        controls = new DemoControls(this);    }    public String[] getCustomControlsConstraints() {        return new String[] { BorderLayout.NORTH };    }    public Component[] getCustomControls() {        return new Component[] { (Component) controls };    }    public void customControlsThread(int state) {        if (state == CustomControls.START) {            controls.start();        } else if (state == CustomControls.STOP) {            controls.stop();        }    }    public void drawDemo(int w, int h, Graphics2D g2) {        Rectangle2D rect = new Rectangle2D.Double();        for (int i = 0; i < numStars; i++) {            g2.setColor(colors[i%3]);            g2.setComposite(AlphaComposite.getInstance(                         AlphaComposite.SRC_OVER, (float) Math.random()));            rect.setRect(w*Math.random(), h*Math.random(),2,2);            g2.fill(rect);        }        FontRenderContext frc = g2.getFontRenderContext();        Font font = new Font("serif.bolditalic", Font.PLAIN, fontSize);        shape = font.createGlyphVector(frc, text).getOutline();        tshape = at.createTransformedShape(shape);        PathIterator pi = shape.getPathIterator(null);                float seg[] = new float[6];        float tseg[] = new float[6];                GeneralPath working = new GeneralPath(GeneralPath.WIND_NON_ZERO);        float x=0, y=0; // Current point on the path        float tx=0, ty=0; // Transformed path point        float cx=0, cy=0; // Last moveTo point, for SEG_CLOSE        float tcx=0, tcy=0; // Transformed last moveTo point                //        // Iterate through the Shape and build the ribbon        // by adding general path objects.        //        while(!pi.isDone()) {            int segType = pi.currentSegment(seg);            switch(segType) {                case PathIterator.SEG_MOVETO:                        at.transform(seg, 0, tseg, 0, 1);                        x = seg[0];                        y = seg[1];                        tx = tseg[0];                        ty = tseg[1];                        cx = x;                        cy = y;                        tcx = tx;                        tcy = ty;                        break;                case PathIterator.SEG_LINETO:                        at.transform(seg, 0, tseg, 0, 1);                        if (Line2D.relativeCCW(x, y, tx, ty,                                               seg[0], seg[1]) < 0) {                            working.moveTo(x, y);                            working.lineTo(seg[0], seg[1]);                            working.lineTo(tseg[0], tseg[1]);                            working.lineTo(tx, ty);                            working.lineTo(x, y);                        } else {                            working.moveTo(x, y);                            working.lineTo(tx, ty);                            working.lineTo(tseg[0], tseg[1]);                            working.lineTo(seg[0], seg[1]);                            working.lineTo(x, y);                        }                                                x = seg[0];                        y = seg[1];                        tx = tseg[0];                        ty = tseg[1];                        break;                                        case PathIterator.SEG_QUADTO:                        at.transform(seg, 0, tseg, 0, 2);                        if (Line2D.relativeCCW(x, y, tx, ty,                                               seg[2], seg[3]) < 0) {                            working.moveTo(x, y);                            working.quadTo(seg[0], seg[1],                                           seg[2], seg[3]);                            working.lineTo(tseg[2], tseg[3]);                            working.quadTo(tseg[0], tseg[1],                                           tx, ty);                            working.lineTo(x, y);                        } else {                            working.moveTo(x, y);                            working.lineTo(tx, ty);                            working.quadTo(tseg[0], tseg[1],                                           tseg[2], tseg[3]);                            working.lineTo(seg[2], seg[3]);                            working.quadTo(seg[0], seg[1],                                           x, y);                        }                                        x = seg[2];                        y = seg[3];                        tx = tseg[2];                        ty = tseg[3];                        break;                        case PathIterator.SEG_CUBICTO:                        at.transform(seg, 0, tseg, 0, 3);                        if (Line2D.relativeCCW(x, y, tx, ty,                                               seg[4], seg[5]) < 0) {                            working.moveTo(x, y);                            working.curveTo(seg[0], seg[1],                                            seg[2], seg[3],                                            seg[4], seg[5]);                            working.lineTo(tseg[4], tseg[5]);                            working.curveTo(tseg[2], tseg[3],                                            tseg[0], tseg[1],                                            tx, ty);                            working.lineTo(x, y);                        } else {                            working.moveTo(x, y);                            working.lineTo(tx, ty);                            working.curveTo(tseg[0], tseg[1],                                            tseg[2], tseg[3],                                            tseg[4], tseg[5]);                            working.lineTo(seg[4], seg[5]);                            working.curveTo(seg[2], seg[3],                                            seg[0], seg[1],                                            x, y);                        }                                        x = seg[4];                        y = seg[5];                        tx = tseg[4];                        ty = tseg[5];                        break;                        case PathIterator.SEG_CLOSE:                        if (Line2D.relativeCCW(x, y, tx, ty,                                               cx, cy) < 0) {                            working.moveTo(x, y);                            working.lineTo(cx, cy);                            working.lineTo(tcx, tcy);                            working.lineTo(tx, ty);                            working.lineTo(x, y);                        } else {                            working.moveTo(x, y);                            working.lineTo(tx, ty);                            working.lineTo(tcx, tcy);                            working.lineTo(cx, cy);                            working.lineTo(x, y);                        }                        x = cx;                         y = cy;                        tx = tcx;                        ty = tcy;            }            pi.next();        } // while        ribbon = working;        g2.setComposite(AlphaComposite.SrcOver);        Rectangle r = shape.getBounds();        g2.translate(w*.5-r.width*.5,h*.5+r.height*.5);        g2.setColor(Color.blue);        g2.fill(tshape);        g2.setColor(new Color(255, 255, 255, 200));        g2.fill(ribbon);        g2.setColor(Color.white);        g2.fill(shape);        g2.setColor(Color.blue);        g2.draw(shape);    }    public static void main(String argv[]) {        Frame f = new Frame("Java2D Demo - Stars3D");        f.addWindowListener(new WindowAdapter() {            public void windowClosing(WindowEvent e) {System.exit(0);}        });        f.add("Center", new DemoPanel(new Stars3D()));        f.pack();        f.setSize(new Dimension(400,300));        f.show();    }    static class DemoControls extends JPanel implements ActionListener, Runnable {        Stars3D demo;        JTextField tf1, tf2;        Thread thread;        public DemoControls(Stars3D demo) {            this.demo = demo;            setBackground(Color.gray);            JLabel l = new JLabel("  Text:");            l.setForeground(Color.black);            add(l);            add(tf1 = new JTextField(demo.text));            tf1.setPreferredSize(new Dimension(60,20));            tf1.addActionListener(this);            l = new JLabel("  Size:");            l.setForeground(Color.black);            add(l);            add(tf2 = new JTextField(String.valueOf(demo.fontSize)));            tf2.setPreferredSize(new Dimension(30,20));            tf2.addActionListener(this);            addMouseListener(new MouseAdapter() {                public void mouseClicked(MouseEvent e) {                    if (thread == null) start(); else stop();                }            });        }        public void actionPerformed(ActionEvent e) {            try {                 if (e.getSource().equals(tf1)) {                    demo.text = tf1.getText().trim();                } else if (e.getSource().equals(tf2)) {                    demo.fontSize = Integer.parseInt(tf2.getText().trim());                    if (demo.fontSize < 10) {                        demo.fontSize = 10;                    }                }                demo.repaint();            } catch (Exception ex) {}        }        public Dimension getPreferredSize() {            return new Dimension(200,32);        }        public void start() {            if (thread != null) {                return;            }            thread = new Thread(this);            thread.setPriority(Thread.MIN_PRIORITY);            thread.setName("Mix.Stars3D DemoControls Thread");            thread.start();        }        public synchronized void stop() {            if (thread != null) {                thread.interrupt();            }            thread = null;            notifyAll();        }        public void run() {            Thread me = Thread.currentThread();            try { thread.sleep(999); } catch (Exception e) { return; }            int width = getSize().width;            int size[] = { (int)(width*.25), (int)(width*.35)};            String str[] = { "JAVA", "J2D" };            while (thread == me) {                for (int i = 0; i < 2; i++) {                    demo.fontSize = size[i];                    tf2.setText(String.valueOf(demo.fontSize));                    tf1.setText(demo.text = str[i]);                    demo.repaint();                    try {                        thread.sleep(5555);                    } catch (InterruptedException e) { return; }                }            }            thread = null;        }    } // End DemoControls} // End Stars3D