textureanim.java

java2d的源码分析

/*
 * @(#)TextureAnim.java	1.7 99/06/22
 *
 * Copyright (c) 1997-1999 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.Paint;
    
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.geom.AffineTransform;
import java.awt.font.TextLayout;
import java.awt.font.FontRenderContext;
import javax.swing.*;
import AnimatingContext;
import DemoSurface;
import DemoPanel;
import CustomControls;


/**
 * TexturePaint animation with controls for transformations.
 */
public class TextureAnim extends DemoSurface implements AnimatingContext, CustomControls {

    public static final Color colorblend = new Color(0f, 0f, 1f, .5f);
    protected static BufferedImage textureImg;
    protected int bNum;
    protected int tilesize;
    private boolean newtexture;
    private TexturePaint texture;
    private Rectangle tilerect;
    private boolean bouncesize = false;
    private boolean bouncerect = true;
    private boolean rotate = false;
    private boolean shearx = false;
    private boolean sheary = false;
    private boolean showanchor = true;
    private boolean quality = false;
    private AnimVal w, h, x, y, rot, shx, shy;
    private DemoControls controls;
    private static Image img[] = new Image[1];
    

    public TextureAnim() {
        img[0] = getImage("duke.gif");   // 8 bit gif

        textureImg = makeImage(32, 0);
        tilesize = textureImg.getWidth();
        w = new AnimVal(0, 200, 3, 10, tilesize);
        h = new AnimVal(0, 200, 3, 10, tilesize);
        x = new AnimVal(0, 200, 3, 10, 0);
        y = new AnimVal(0, 200, 3, 10, 0);
        rot = new AnimVal(-360, 360, 5, 15, 0);
        shx = new AnimVal(-50, 50, 3, 10, 0);
        shy = new AnimVal(-50, 50, 3, 10, 0);
        tilerect = new Rectangle(x.getInt(), y.getInt(),
                                 w.getInt(), h.getInt());
        texture = new TexturePaint(textureImg, tilerect);
        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();
        }
    }


    protected BufferedImage makeImage(int size, int num) {
        newtexture = true;
        switch (bNum = num) {
            case 0 : return makeBGRImage(size);
            case 1 : return makeGIFImage(size);
        }
        return null;
    }


    private BufferedImage makeBGRImage(int size) {
        BufferedImage bi = new BufferedImage(size, size, BufferedImage.TYPE_INT_BGR);
        Graphics2D big = bi.createGraphics();
        big.setColor(Color.white);
        big.fillRect(0, 0, size, size);
        for (int j = 0; j < size; j++) {
            float red = j / (float) size;
            for (int i = 0; i < size; i++) {
                float green = i / (float) size;
                big.setColor(new Color(1.0f - red, 1.0f - green, 0.0f, 1.0f));
                big.drawLine(i, j, i, j);
            }
        }
        return bi;
    }


    private BufferedImage makeGIFImage(int d) {
        BufferedImage bi = new BufferedImage(d, d, BufferedImage.TYPE_INT_RGB);
        Graphics2D big = bi.createGraphics();
        big.drawImage(img[0], 0, 0, d, d, new Color(204, 204, 255), null);
        return bi;
    }


    public void reset(int width, int height) {
        x.newlimits(-width/4, width/4 - w.getInt());
        y.newlimits(-height/4, height/4 - h.getInt());
    }


    public void step(int width, int height) {
        if (tilesize != textureImg.getWidth()) {
            tilesize = textureImg.getWidth();
        }
        if (bouncesize) {
            w.anim();
            h.anim();
            x.newlimits(-width/4, width/4 - w.getInt());
            y.newlimits(-height/4, height/4 - h.getInt());
        } else {
            if (w.getInt() != tilesize) {
                w.set(tilesize);
                x.newlimits(-width/4, width/4 - w.getInt());
            }
            if (h.getInt() != tilesize) {
                h.set(tilesize);
                y.newlimits(-height/4, height/4 - h.getInt());
            }
        }
        if (bouncerect) {
            x.anim();
            y.anim();
        }
        if (newtexture ||
            x.getInt() != tilerect.x || y.getInt() != tilerect.y ||
            w.getInt() != tilerect.width || h.getInt() != tilerect.height)
        {
            newtexture = false;
            int X = x.getInt();
            int Y = y.getInt();
            int W = w.getInt();
            int H = h.getInt();
            tilerect = new Rectangle(X, Y, W, H);
            texture = new TexturePaint(textureImg, tilerect);
        }
    }


    public void drawDemo(int width, int height, Graphics2D g2) {

        g2.translate(width/2, height/2);
        if (rotate) {
            rot.anim();
            g2.rotate(Math.toRadians(rot.getFlt()));
        } else {
            rot.set(0);
        }
        if (shearx) {
            shx.anim();
            g2.shear(shx.getFlt()/100, 0.0f);
        } else {
            shx.set(0);
        }
        if (sheary) {
            shy.anim();
            g2.shear(0.0f, shy.getFlt()/100);
        } else {
            shy.set(0);
        }
        g2.setPaint(texture);
        g2.fillRect(-1000, -1000, 2000, 2000);
        if (showanchor) {
            g2.setColor(Color.black);
            g2.setColor(colorblend);
            g2.fill(tilerect);
        }
    }


    public static void main(String argv[]) {
        final DemoPanel dp = new DemoPanel(new TextureAnim());
        JFrame f = new JFrame("Java2D Demo - TexureAnim");
        f.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
            public void windowDeiconified(WindowEvent e) { 
                dp.surface.start(); 
            }
            public void windowIconified(WindowEvent e) { 
                dp.surface.stop(); 
            }
        });
        f.getContentPane().add("Center", dp);