import java.awt.*;
public class TaiJi extends Frame{
public static void main(String args[]){
new TaiJi();
}
public TaiJi(){
super("太极");
setSize(500,500);
setVisible(true);
}
public void paint(Graphics g){
g.drawOval(150,150,200,200);
g.drawOval(175,225,50,50);
g.fillOval(275,225,50,50);
}
}
我想做一个太极的图片，我已经做了一些图形，但是还有一个圆弧不知道怎么画，我知道是用g.drawArc,但是那些弧度怎么表示我却不知道，请问哪位高手知道？谢谢！
------解决方案--------------------
有个fillPolygon 方法，可以根据自定义坐标来描绘图形的。
------解决方案--------------------
更本不需要这么搞
利用Java 2D的图形几何运算功能就可以了，然后对得出的每个子对象进行fill操作就可以
------解决方案--------------------
好了，我花点时间帮你写好了，主要是利用Java 2D对图像的几何操作！希望对你有帮助！
- Java code
package com.gloomyfish.swing;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.Shape;import java.awt.geom.Area;import java.awt.geom.Ellipse2D;import java.awt.geom.Rectangle2D;import javax.swing.JComponent;import javax.swing.JFrame;public class YingYangGraphics extends JComponent { /** * */ private static final long serialVersionUID = 8812325148970066491L; public YingYangGraphics() { super(); } protected void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Shape lefthalfCirle = new Ellipse2D.Double(10,10, 300,300); // R = 150 Shape righthalfCircle = new Ellipse2D.Double(10,10, 300,300); // R = 150 Shape innerCircle1 = new Ellipse2D.Double(85,10, 150,150); // R/2 = 75 Shape innerCircle2 = new Ellipse2D.Double(85,160, 150,150); // R = 150 Shape rectangel1 = new Rectangle2D.Double(160, 10, 150, 300); Shape rectangel2 = new Rectangle2D.Double(10, 10, 150, 300); Area left = new Area(lefthalfCirle); Area right = new Area(righthalfCircle); Area area11 = new Area(rectangel1); Area area22 = new Area(rectangel2); left.subtract(area11); right.subtract(area22); Area inner1 = new Area(innerCircle1); Area inner2 = new Area(innerCircle2); left.add(inner1); //left.subtract(inner2); right.add(inner2); right.subtract(inner1); // trick is here !!! // create minor circle here!!! Shape minorWhiteCircle = new Ellipse2D.Double(150,70, 10,10); // ++ 60 Shape innerBlackCircle = new Ellipse2D.Double(150,230, 10,10); // R = 150 // draw two big frame shape here... g2.setPaint(Color.BLACK); g2.fill(left); g2.setPaint(Color.WHITE); g2.fill(right); // draw minor circle here!!! g2.fill(minorWhiteCircle); g2.setPaint(Color.BLACK); g2.fill(innerBlackCircle); } public static void main(String[] args) { JFrame frame = new JFrame("Test Panel"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().setLayout(new BorderLayout()); // Display the window. frame.getContentPane().add(new YingYangGraphics(), BorderLayout.CENTER); frame.setPreferredSize(new Dimension(330,350)); frame.pack(); frame.setVisible(true); }}
------解决方案--------------------
一个π代表半个圆