/* * @(#)WarpImage.java	1.25 04/07/26 *  * Copyright (c) 2004 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. *//* * @(#)WarpImage.java	1.25 04/07/26 */package java2d.demos.Images;import java.awt.*;import java.awt.geom.CubicCurve2D;import java.awt.geom.Point2D;import java.awt.geom.FlatteningPathIterator;import java.awt.geom.PathIterator;import java2d.AnimatingSurface;/** * Warps a image on a CubicCurve2D flattened path. */public class WarpImage extends AnimatingSurface {    private static int iw, ih, iw2, ih2;    private static Image img;    private static final int FORWARD = 0;    private static final int BACK = 1;    private Point2D pts[];    private int direction = FORWARD;    private int pNum;    private int x, y;    public WarpImage() {        setBackground(Color.white);        img = getImage("surfing.gif");        iw = img.getWidth(this);        ih = img.getHeight(this);        iw2 = iw/2;        ih2 = ih/2;    }    public void reset(int w, int h) {        pNum = 0;        direction = FORWARD;        CubicCurve2D cc = new CubicCurve2D.Float(                        w*.2f, h*.5f, w*.4f,0, w*.6f,h,w*.8f,h*.5f);        PathIterator pi = cc.getPathIterator(null, 0.1);        Point2D tmp[] = new Point2D[200];        int i = 0;        while ( !pi.isDone() ) {            float[] coords = new float[6];            switch ( pi.currentSegment(coords) ) {                case PathIterator.SEG_MOVETO:                case PathIterator.SEG_LINETO:                        tmp[i] = new Point2D.Float(coords[0], coords[1]);            }            i++;            pi.next();        }        pts = new Point2D[i];        System.arraycopy(tmp,0,pts,0,i);    }    public void step(int w, int h) {        if (pts == null) {            return;        }        x = (int) pts[pNum].getX();        y = (int) pts[pNum].getY();        if (direction == FORWARD)            if (++pNum == pts.length)                direction = BACK;        if (direction == BACK)            if (--pNum == 0)                direction = FORWARD;    }    public void render(int w, int h, Graphics2D g2) {        g2.drawImage(img,                        0,              0,              x,              y,                        0,              0,              iw2,            ih2,                        this);        g2.drawImage(img,                        x,              0,              w,              y,                        iw2,            0,              iw,             ih2,                        this);        g2.drawImage(img,                        0,              y,              x,              h,                        0,              ih2,            iw2,            ih,                        this);        g2.drawImage(img,                        x,              y,              w,              h,                        iw2,            ih2,            iw,             ih,                        this);    }    public static void main(String argv[]) {        createDemoFrame(new WarpImage());    }}