Java画图

 

 

 

 

代码实现：

 

 

packagecn.hnpi;

 

importjava.awt.BasicStroke;

importjava.awt.Color;

importjava.awt.Font;

importjava.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.geom.Ellipse2D;

 

importjavax.swing.JFrame;

importjavax.swing.JPanel;

 

public class DrawcachetPanel extends JPanel {

         @Override

         public void paint(Graphics g) {

                   // TODO Auto-generated method stub

                   Graphics2D g2 = (Graphics2D) g;

                   g2.translate(170, 100);// 平移坐标轴

                   BasicStroke stroke = new BasicStroke(6);

                   g2.setStroke(stroke);

 

                   Ellipse2D.Float ellipse = new Ellipse2D.Float(-80, -80, 160, 160);

                   Color color = new Color(255, 0, 0);

                   g2.setColor(color);

                   g2.draw(ellipse);

 

                   // 绘制五星

 

                   int[] x1 = { 0, 8, 30, 16, 25, 0, -25, -16, -30, -8 };

                   int[] y1 = { -35, -10, -15, 5, 28, 10, 28, 5, -15, -10 };

 

                   int n1 = 10;

                   g2.fillPolygon(x1, y1, n1);

 

                   // 绘制文本

 

                   g2.scale(1.8, 1.8);

                   Font font = new Font("宋体", Font.BOLD, 12);

                   g2.setFont(font);

                   g2.drawString("专用章", -20, 35);

                   int width = getWidth();

                   intheigtht = getHeight();

                   // 将字符串转换为字符数组

                   char[] array = "**职业技术学院".toCharArray();

 

                   intlen = array.length * 3;

 

                   font = new Font("宋体", Font.BOLD, 10);

                   g2.setFont(font);

                   double angle = 0;

                   for (int i = 0; i <array.length; i++) {

                            int x = (int) (len * Math.sin(Math.toRadians(angle + 270)));

                            int y = (int) (len * Math.cos(Math.toRadians(angle + 270)));

                            g2.drawString(array[i] + "", width / 2 + x - 148, heigtht / 2 - y

                                               - 94);

                            angle = angle + 360d / array.length;

                   }

 

         }

 

         public static void main(String[] args) {

                   // new DrawcachetPanel();

                   JFrame f = new JFrame();

                   f.getContentPane().add(new DrawcachetPanel());

                   f.setSize(100, 200);

                   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                   f.setVisible(true);

         }

}