通过Graphics对象来实现动画效果

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通过Graphics对象来实现动画效果

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package com.zuidaima.animate;import java.awt.Color;import java.awt.Graphics;import java.awt.Insets;import java.util.Timer;import java.util.TimerTask;import javax.swing.JFrame;public class Animate extends JFrame {private static int DELAY = 100;Insets insets;Color colors[] = { Color.RED, Color.ORANGE, Color.YELLOW, Color.GREEN,Color.BLUE, Color.MAGENTA };public void paint(Graphics g) {super.paint(g);if (insets == null) {insets = getInsets();}// Calculate each time in case of resizeint x = insets.left;int y = insets.top;int width = getWidth() - insets.left - insets.right;int height = getHeight() - insets.top - insets.bottom;int start = 0;int steps = colors.length;int stepSize = 360 / steps;synchronized (colors) {for (int i = 0; i < steps; i++) {g.setColor(colors[i]);g.fillArc(x, y, width, height, start, stepSize);start += stepSize;}}}public void go() {TimerTask task = new TimerTask() {public void run() {Color c = colors[0];synchronized (colors) {System.arraycopy(colors, 1, colors, 0, colors.length - 1);colors[colors.length - 1] = c;}repaint();}};Timer timer = new Timer();timer.schedule(task, 0, DELAY);}public static void main(String args[]) {Animate f = new Animate();f.setSize(200, 200);f.show();f.go();}}

完整代码下载地址:http://www.zuidaima.com/share/1550463399660544.htm

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