java2d文字旋转特效
时间:2011-06-12 BlogJava zht
将图形围绕某点按照给定的角度进行旋转
效果图：
源代码：package java2d;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Rotate {
/**
* @param args
*/
public static void main(String[] args) {
JFrame jf = new JFrame();
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.getContentPane().add(new RotatePanel());
jf.setPreferredSize(new Dimension(500, 400));
jf.pack();
jf.setVisible(true);
}
}
class RotatePanel extends JPanel {
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setColor(Color.WHITE);
g2d.fillRect(0, 0, this.getWidth(), this.getHeight());
String s = "Java 2d 旋转";
Font f = new Font("宋体", Font.BOLD, 16);
Color[] colors = { Color.ORANGE, Color.LIGHT_GRAY };
g2d.setFont(f);
// 平移原点到图形环境的中心
g2d.translate(this.getWidth() / 2, this.getHeight() / 2);
// 旋转文本
for (int i = 0; i < 12; i++) {
g2d.rotate(30 * Math.PI / 180);
g2d.setPaint(colors[i % 2]);
g2d.drawString(s, 0, 0);
}
}
} |
