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++;
         }

     }
 }

ArtDesignPanel

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);
    }

}

ArtDesignFrame

运行截图如下：

文本摘自：《JAVA开发实例1200例》---王家林。