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TITLE:RandomDissolveで表示を切り替え
#navi(../)
*RandomDissolveで表示を切り替え [#na4cc347]
>編集者:[[Terai Atsuhiro>terai]]~
作成日:2007-03-26~
更新日:&lastmod;
---
category: swing
folder: RandomDissolve
title: RandomDissolveで表示を切り替え
tags: [Animation, Graphics, BufferedImage, WritableRaster]
author: aterai
pubdate: 2007-03-26T20:17:32+09:00
description: RandomDissolve効果で表示する画像を切り替えます。
image: https://lh4.googleusercontent.com/_9Z4BYR88imo/TQTRdPqz07I/AAAAAAAAAhM/h3EaItM41Yw/s800/RandomDissolve.png
---
* 概要 [#summary]
`RandomDissolve`効果で表示する画像を切り替えます。
#contents
#download(https://lh4.googleusercontent.com/_9Z4BYR88imo/TQTRdPqz07I/AAAAAAAAAhM/h3EaItM41Yw/s800/RandomDissolve.png)
**概要 [#r53aae26]
RandomDissolve効果で表示する画像を切り替えます。このサンプルは、[[random pixelwise fading ?>http://forum.java.sun.com/thread.jspa?threadID=481792]]に投稿されているソースコードを参考にしています。
* サンプルコード [#sourcecode]
#code(link){{
class RandomDissolve extends JComponent implements ActionListener {
private static final int STAGES = 16;
private final Timer animator;
private final transient BufferedImage image1;
private final transient BufferedImage image2;
private transient BufferedImage srcimg;
private boolean mode = true;
private int currentStage;
private int[] src, dst, step;
#screenshot
public RandomDissolve(BufferedImage i1, BufferedImage i2) {
super();
this.image1 = i1;
this.image2 = i2;
this.srcimg = copyImage(mode ? image2 : image1);
animator = new Timer(10, this);
}
**サンプルコード [#y4f21e02]
#code{{
class RandomDissolve extends JComponent implements ActionListener {
private final javax.swing.Timer animator;
private final BufferedImage image1;
private final BufferedImage image2;
private BufferedImage srcimg, dstimg;
private boolean mode = true;
private int currentStage;
private int[] src, dst, step;
public RandomDissolve(BufferedImage i1, BufferedImage i2) {
this.image1 = i1;
this.image2 = i2;
this.srcimg = copyImage(mode?image2:image1);
animator = new javax.swing.Timer(10, this);
}
public boolean nextStage() {
if(currentStage > 0) {
currentStage = currentStage - 1;
for(int i=0; i<step.length; i++) {
if(step[i]==currentStage) src[i] = dst[i];
}
return true;
}else{
return false;
}
}
private BufferedImage copyImage(final BufferedImage image) {
int w = image.getWidth();
int h = image.getHeight();
BufferedImage result = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g = result.createGraphics();
g.drawRenderedImage(image, null);
g.dispose();
return result;
}
private int[] getData(BufferedImage image) {
WritableRaster wr = image.getRaster();
DataBufferInt dbi = (DataBufferInt)wr.getDataBuffer();
return dbi.getData();
//return ((DataBufferInt)(image.getRaster().getDataBuffer())).getData();
}
private static final int STAGES = 16;
public void animationStart() {
currentStage = STAGES;
dstimg = copyImage(mode?image1:image2);
srcimg = copyImage(mode?image2:image1);
src = getData(srcimg);
dst = getData(dstimg);
step = new int[src.length];
mode = !mode;
Random rnd = new Random();
for(int i=0;i<step.length;i++) {
step[i] = rnd.nextInt(currentStage);
}
animator.start();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D)g;
g2d.setPaint(getBackground());
g2d.fillRect(0, 0, getWidth(), getHeight());
g2d.drawImage(srcimg, 0, 0, srcimg.getWidth(), srcimg.getHeight(), this);
}
public void actionPerformed(ActionEvent e) {
if(nextStage()) {
repaint();
}else{
animator.stop();
}
}
}
public boolean nextStage() {
if (currentStage > 0) {
currentStage = currentStage - 1;
for (int i = 0; i < step.length; i++) {
if (step[i] == currentStage) {
src[i] = dst[i];
}
}
return true;
} else {
return false;
}
}
private BufferedImage copyImage(final BufferedImage image) {
int w = image.getWidth();
int h = image.getHeight();
BufferedImage result = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g = result.createGraphics();
g.drawRenderedImage(image, null);
g.dispose();
return result;
}
private int[] getData(BufferedImage image) {
WritableRaster wr = image.getRaster();
DataBufferInt dbi = (DataBufferInt) wr.getDataBuffer();
return dbi.getData();
}
public void animationStart() {
currentStage = STAGES;
srcimg = copyImage(mode ? image2 : image1);
src = getData(srcimg);
dst = getData(copyImage(mode ? image1 : image2));
step = new int[src.length];
mode ^= true;
Random rnd = new Random();
for (int i = 0; i < step.length; i++) {
step[i] = rnd.nextInt(currentStage);
}
animator.start();
}
@Override protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
g2d.setPaint(getBackground());
g2d.fillRect(0, 0, getWidth(), getHeight());
g2d.drawImage(srcimg, 0, 0, srcimg.getWidth(), srcimg.getHeight(), this);
g2d.dispose();
}
@Override public void actionPerformed(ActionEvent e) {
if (nextStage()) {
repaint();
} else {
animator.stop();
}
}
}
}}
-&jnlp;
-&jar;
-&zip;
**解説 [#w98eeb09]
上記のサンプルでは、BufferedImageからWritableRasterを取得し、元画像と次の画像のコピーから、int配列をそれぞれ用意しています。元画像の配列を次の画像のピクセルでランダムに置き換えて、これを再描画することで画像の切り替えを行っています。
* 解説 [#explanation]
- `BufferedImage`から`WritableRaster`を取得し、元画像と次の画像のコピーから`int`配列をそれぞれ作成
- 元画像の配列を次の画像のピクセルでランダムに置き換えて、これを再描画することで画像の切り替えを実行
**参考リンク [#t2398063]
-[[random pixelwise fading ?>http://forum.java.sun.com/thread.jspa?threadID=481792]]
* 参考リンク [#reference]
- %%[https://community.oracle.com/thread/1270228 Java 2D - random pixelwise fading ?]%%
- [https://docs.oracle.com/javase/jp/8/docs/api/java/awt/image/WritableRaster.html WritableRaster (Java Platform SE 8)]
**コメント [#ddce085f]
* コメント [#comment]
#comment
#comment