Java绘制艺术图形

本例主要是通过使用坐标轴平移，图形旋转和获得随机数等技术来绘制艺术图案。通过重写JPanel类中的paint()方法，并在该方法中使用Graphics2D类中的translate(),setColor(),ratate()和draw()方法来实现的。具体代码如下：

1. 创建一个ArtDesignPanel类，继承JPanel类，来进行图形的绘制

package com.example.artdesign.ui;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.util.Random;

import javax.swing.JPanel;

/***
 * 创建内部面板类
 * @author lenovo'
 *
 */
public class ArtDesignPanel extends JPanel{

    @Override
    public void paint(Graphics g) {  //重写paint方法
        // TODO Auto-generated method stub
        Graphics2D g2 = (Graphics2D)g;     //获得Graphics2D对象
        Ellipse2D.Float ellipse = new Ellipse2D.Float(-80, 5, 160, 10); //创建椭圆对象
        g2.translate(160, 90); //平移坐标轴
        
        Random random = new Random(); //获得随机数
        int R = random.nextInt(256);  //随机产生颜色的R值
        int G = random.nextInt(256);  //随机产生颜色的G值
        int B = random.nextInt(256);  //随机产生颜色的B值
        
        Color color = new Color(R,G,B);  //创建颜色对象
        g2.setColor(color);  //指定颜色
        g2.draw(ellipse);   //绘制椭圆
        
        int i = 0;
        while (i < 100) {
            
            R = random.nextInt(256);  //随机产生颜色的R值
            G = random.nextInt(256);  //随机产生颜色的G值
            B = random.nextInt(256);  //随机产生颜色的B值
            
            color = new Color(R,G,B);
            
            g2.setColor(color);
            g2.rotate(10);   //旋转画布
            g2.draw(ellipse);  //绘制椭圆
            
            i++;
        }
        
    }
}

2. 创建一个ArtDesignFrame类，继承JFrame类，来加载ArtDesignPanel窗体。

package com.example.artdesign.ui;

import java.awt.Dimension;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.JFrame;

public class ArtDesignFrame extends JFrame{

    /**
     * 
     */
    private static final long serialVersionUID = -1760723807752896879L;
    
    public ArtDesignFrame() {
        // TODO Auto-generated constructor stub
        this.add(new ArtDesignPanel());
        this.addWindowListener(new WindowListener() {
            
            @Override
            public void windowOpened(WindowEvent arg0) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void windowIconified(WindowEvent arg0) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void windowDeiconified(WindowEvent arg0) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void windowDeactivated(WindowEvent arg0) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void windowClosing(WindowEvent arg0) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void windowClosed(WindowEvent arg0) {
                // TODO Auto-generated method stub
                System.exit(0);
            }
            
            @Override
            public void windowActivated(WindowEvent arg0) {
                // TODO Auto-generated method stub
                
            }
        });
        this.setVisible(true);
        
    }
    
    public static void main(String[] args) {
        ArtDesignFrame frame = new ArtDesignFrame();
        frame.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        frame.setSize(360, 360);
    }

}

运行截图如下：

 文本摘自：《JAVA开发实例1200例》---王家林。