java 3D畫圖實(shí)例

到你安裝的JDK目錄先找demo文件夾看看...如果沒有的話，那就安裝一個(gè)帶有demo的JDK版本。

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這里全都是官方示例，絕對(duì)值得參考學(xué)習(xí)。

java怎么畫出 3D 效果的圖像？

可參考 孫博文 的一本書 分形算法與程序設(shè)計(jì): Java實(shí)現(xiàn) 里面有3D的內(nèi)容

貌似要下載 JAVA3D 的msi安裝包 解壓后得到j(luò)ar包 JAVA 3D已經(jīng)被淘汰 可能有點(diǎn)難找

用Java3D編程就行了 你先把那書上關(guān)于3D的代碼 稍微看一下 編程的思路也就是 先建立一個(gè)場(chǎng)景(有光) 然后空間描點(diǎn) 畫線 著色 之類的 可以參考具體的Java 3D 的書 貌似大多是英文的

編程也可以參考官方API文檔

java3d里怎么實(shí)現(xiàn)畫布的重繪啊？誰能提供相應(yīng)的代碼。

如果認(rèn)可，請(qǐng)加分到100分，謝謝

import?javax.swing.*;

import?java.awt.*;

import?java.awt.event.*;

import?java.awt.image.*;

import?java.util.*;

/**

*?點(diǎn)擊按鈕繪制圓點(diǎn)

*?@author?Hardneedl

*/

final?class?PaintDemo?extends?JFrame?{

public?String?getTitle()?{return?"PaintDemo";}

static?private?final?Dimension?size?=?new?Dimension(600,400);

public?Dimension?getPreferredSize()?{return?size;}

public?Dimension?getMaximumSize()?{return?size;}

public?Dimension?getMinimumSize()?{return?size;}

public?Dimension?getSize(){return?size;}

/*畫筆*/

private?interface?Brush?{void?paint(Graphics?g);}

private?class?_Brush?implements?Brush,Observer?{

private?Point?p;

public?void?paint(Graphics?g)?{

if(p==null)return;

Graphics?g2=g.create();

//抗鋸齒

((Graphics2D)g2).setRenderingHint(RenderingHints.KEY_ANTIALIASING,?RenderingHints.VALUE_ANTIALIAS_ON);

g2.setColor(Color.YELLOW);

g2.fillArc(p.x,p.y,?10,10?,0,360);

g2.dispose();

}

public?void?update(Observable?o,?Object?arg)?{

if?(arg?instanceof?Point)p=?(Point)?arg;

}

}

private?class?PaintCanvas?extends?JComponent?implements?Observer{

private?BufferedImage?img?=?new?BufferedImage(400,300,BufferedImage.TYPE_INT_RGB);

private?Brush?b;

private?PaintCanvas(Brush?b)?{this.b=b;}

protected?void?paintComponent(Graphics?g)?{

super.paintComponent(g);

b.paint(img.getGraphics());

g.drawImage(img,0,0,this);

}

public?void?update(Observable?o,?Object?arg)?{

if("REPAINT".equals(arg))?repaint();

}

}

private?class?DrawAction?extends?AbstractAction{

private?Point?p?=?new?Point(30,100);

private?Observable?observable?=?new?Observable(){

public?void?notifyObservers(Object?arg)?{

setChanged();

super.notifyObservers(arg);

}

};

private?DrawAction(Observer...?observers)?{

super("Draw?Circle");

if(observers!=null)

for(Observer?o?:?observers)

observable.addObserver(o);

}

public?void?actionPerformed(ActionEvent?e)?{

observable.notifyObservers(p);

observable.notifyObservers("REPAINT");

p.x+=30;p.y+=20;

}

}

PaintDemo()?throws?HeadlessException?{

init();

attachListeners();

doLay();

}

private?PaintCanvas?canvas;

private?_Brush?brush;

private?void?init(){

canvas?=?new?PaintCanvas(brush=new?_Brush());

}

private?void?attachListeners(){

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

private?void?doLay(){

Container?container?=?getContentPane();

container.add(new?JButton(new?DrawAction(brush,canvas)),BorderLayout.NORTH);

container.add(canvas,BorderLayout.CENTER);

pack();

setVisible(true);

}

public?static?void?main(String[]args)?{

System.setProperty("swing.defaultlaf","com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

SwingUtilities.invokeLater(

new?Runnable(){

public?void?run()?{

new?PaintDemo();

}

}

);

}

}

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