/* * @(#)BezierAnim.java	1.25 06/08/29 *  * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: *  * -Redistribution of source code must retain the above copyright notice, this *  list of conditions and the following disclaimer. *  * -Redistribution in binary form must reproduce the above copyright notice,  *  this list of conditions and the following disclaimer in the documentation *  and/or other materials provided with the distribution. *  * Neither the name of Sun Microsystems, Inc. or the names of contributors may  * be used to endorse or promote products derived from this software without  * specific prior written permission. *  * 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 MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE,  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. *  * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. *//* * @(#)BezierAnim.java	1.25 06/08/29 */package java2d.demos.Arcs_Curves;import static java.awt.Color.*;import java.awt.*;import java.awt.event.*;import java.awt.image.BufferedImage;import java.awt.geom.GeneralPath;import javax.swing.*;import java2d.AnimatingControlsSurface;import java2d.CustomControls;/** * Animated Bezier Curve with controls for different draw & fill paints. */public class BezierAnim extends AnimatingControlsSurface {    private static final int NUMPTS = 6;    protected BasicStroke solid = new BasicStroke(10.0f,                         BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND);    protected BasicStroke dashed = new BasicStroke(10.0f,        BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 10, new float[] {5}, 0);    private float animpts[] = new float[NUMPTS * 2];    private float  deltas[] = new float[NUMPTS * 2];    protected Paint fillPaint, drawPaint;    protected boolean doFill = true;    protected boolean doDraw = true;    protected GradientPaint gradient;    protected BasicStroke stroke;    public BezierAnim() {        setBackground(WHITE);        gradient = new GradientPaint(0,0,RED,200,200,YELLOW);        fillPaint = gradient;        drawPaint = BLUE;        stroke = solid;        setControls(new Component[] { new DemoControls(this) });    }    public void animate(float[] pts, float[] deltas, int index, int limit) {        float newpt = pts[index] + deltas[index];        if (newpt <= 0) {            newpt = -newpt;            deltas[index] =   (float) (Math.random() * 4.0 + 2.0);        } else if (newpt >= (float) limit) {            newpt = 2.0f * limit - newpt;            deltas[index] = - (float) (Math.random() * 4.0 + 2.0);        }        pts[index] = newpt;    }    public void reset(int w, int h) {        for (int i = 0; i < animpts.length; i += 2) {            animpts[i + 0] = (float) (Math.random() * w);            animpts[i + 1] = (float) (Math.random() * h);             deltas[i + 0] = (float) (Math.random() * 6.0 + 4.0);             deltas[i + 1] = (float) (Math.random() * 6.0 + 4.0);            if (animpts[i + 0] > w / 2.0f) {                deltas[i + 0] = -deltas[i + 0];            }            if (animpts[i + 1] > h / 2.0f) {                deltas[i + 1] = -deltas[i + 1];            }        }        gradient = new GradientPaint(0,0,RED,w*.7f,h*.7f,YELLOW);    }    public void step(int w, int h) {        for (int i = 0; i < animpts.length; i += 2) {            animate(animpts, deltas, i + 0, w);            animate(animpts, deltas, i + 1, h);        }    }    public void render(int w, int h, Graphics2D g2) {        float[] ctrlpts = animpts;        int len = ctrlpts.length;        float prevx = ctrlpts[len - 2];        float prevy = ctrlpts[len - 1];        float  curx = ctrlpts[0];        float  cury = ctrlpts[1];        float  midx = (curx + prevx) / 2.0f;        float  midy = (cury + prevy) / 2.0f;        GeneralPath gp = new GeneralPath(GeneralPath.WIND_NON_ZERO);        gp.moveTo(midx, midy);        for (int i = 2; i <= ctrlpts.length; i += 2) {            float x1 = (midx + curx) / 2.0f;            float y1 = (midy + cury) / 2.0f;            prevx = curx;            prevy = cury;            if (i < ctrlpts.length) {                curx = ctrlpts[i + 0];                cury = ctrlpts[i + 1];            } else {                curx = ctrlpts[0];                cury = ctrlpts[1];            }            midx = (curx + prevx) / 2.0f;            midy = (cury + prevy) / 2.0f;            float x2 = (prevx + midx) / 2.0f;            float y2 = (prevy + midy) / 2.0f;            gp.curveTo(x1, y1, x2, y2, midx, midy);        }        gp.closePath();        if (doDraw) {            g2.setPaint(drawPaint);            g2.setStroke(stroke);            g2.draw(gp);        }        if (doFill) {            if (fillPaint instanceof GradientPaint) {                fillPaint = gradient;            }            g2.setPaint(fillPaint);            g2.fill(gp);        }    }    public static void main(String argv[]) {        createDemoFrame(new BezierAnim());    }    static class DemoControls extends CustomControls implements ActionListener {        static TexturePaint tp1, tp2;        static {            BufferedImage bi = new BufferedImage(2,1,BufferedImage.TYPE_INT_RGB);            bi.setRGB(0, 0, 0xff00ff00); bi.setRGB(1, 0, 0xffff0000);            tp1 = new TexturePaint(bi,new Rectangle(0,0,2,1));            bi = new BufferedImage(2,1,BufferedImage.TYPE_INT_RGB);            bi.setRGB(0, 0, 0xff0000ff); bi.setRGB(1, 0, 0xffff0000);            tp2 = new TexturePaint(bi,new Rectangle(0,0,2,1));        }        BezierAnim demo;        static Paint drawPaints[] =                 {new Color(0,0,0,0), BLUE, new Color(0, 0, 255, 126),                   BLUE, tp2 };        static String drawName[] =                {"No Draw", "Blue", "Blue w/ Alpha", "Blue Dash", "Texture" };         static Paint fillPaints[] =                 {new Color(0,0,0,0), GREEN, new Color(0, 255, 0, 126),                   tp1, new GradientPaint(0,0,RED,30,30,YELLOW) };        String fillName[] =                {"No Fill", "Green", "Green w/ Alpha", "Texture", "Gradient"};                 JMenu fillMenu, drawMenu;        JMenuItem fillMI[] = new JMenuItem[fillPaints.length];        JMenuItem drawMI[] = new JMenuItem[drawPaints.length];        PaintedIcon fillIcons[] = new PaintedIcon[fillPaints.length];        PaintedIcon drawIcons[] = new PaintedIcon[drawPaints.length];        Font font = new Font("serif", Font.PLAIN, 10);        public DemoControls(BezierAnim demo) {            super(demo.name);            this.demo = demo;            JMenuBar drawMenuBar = new JMenuBar();            add(drawMenuBar);            JMenuBar fillMenuBar = new JMenuBar();            add(fillMenuBar);            drawMenu = (JMenu) drawMenuBar.add(new JMenu("Draw Choice"));            drawMenu.setFont(font);            for (int i = 0; i < drawPaints.length; i++) {                drawIcons[i]= new PaintedIcon(drawPaints[i]);                drawMI[i] = drawMenu.add(new JMenuItem(drawName[i]));                drawMI[i].setFont(font);                drawMI[i].setIcon(drawIcons[i]);                drawMI[i].addActionListener(this);            }             drawMenu.setIcon(drawIcons[1]);            fillMenu = (JMenu) fillMenuBar.add(new JMenu("Fill Choice"));            fillMenu.setFont(font);            for (int i = 0; i < fillPaints.length; i++) {                fillIcons[i]= new PaintedIcon(fillPaints[i]);                fillMI[i] = fillMenu.add(new JMenuItem(fillName[i]));                fillMI[i].setFont(font);                fillMI[i].setIcon(fillIcons[i]);                fillMI[i].addActionListener(this);            }             fillMenu.setIcon(fillIcons[fillPaints.length-1]);        }        public void actionPerformed(ActionEvent e) {            Object obj = e.getSource();            for (int i = 0; i < fillPaints.length; i++) {                if (obj.equals(fillMI[i])) {                    demo.doFill = true;                    demo.fillPaint = fillPaints[i];                    fillMenu.setIcon(fillIcons[i]);                    break;                }             }            for (int i = 0; i < drawPaints.length; i++) {                if (obj.equals(drawMI[i])) {                    demo.doDraw = true;                    demo.drawPaint = drawPaints[i];                    if (((JMenuItem) obj).getText().endsWith("Dash")) {                        demo.stroke = demo.dashed;                    } else {                        demo.stroke = demo.solid;                    }                    drawMenu.setIcon(drawIcons[i]);                    break;                }             }            if (obj.equals(fillMI[0])) {                demo.doFill = false;            } else if (obj.equals(drawMI[0])) {                demo.doDraw = false;            }            if (demo.animating.thread == null) {                demo.repaint();            }        }        public Dimension getPreferredSize() {            return new Dimension(200,36);        }        public void run() {            Thread me = Thread.currentThread();            while (thread == me) {                for (JMenuItem dmi : drawMI) {                    dmi.doClick();                    for (JMenuItem fmi : fillMI) {                        fmi.doClick();                        try {                            thread.sleep(3000 + (long) (Math.random() * 3000));                        } catch (InterruptedException e) { break; }                    }                }            }            thread = null;        }        static class PaintedIcon implements Icon {            Paint paint;            public PaintedIcon(Paint p) {                this.paint = p;            }                public void paintIcon(Component c, Graphics g, int x, int y) {                Graphics2D g2 = (Graphics2D) g;                g2.setPaint(paint);                g2.fillRect(x,y,getIconWidth(), getIconHeight());                g2.setColor(GRAY);                g2.draw3DRect(x, y, getIconWidth()-1, getIconHeight()-1, true);            }            public int getIconWidth()  { return 12; }            public int getIconHeight() { return 12; }        } // End PaintedIcon class    } // End DemoControls class} // End BezierAnim class