renderingdemo11.java

来自「java 完全探索的随书源码」· Java 代码 · 共 36 行

// RenderingDemo11.java

import java.awt.*;
import java.awt.geom.*;

public class RenderingDemo11 extends java.applet.Applet
{
  public void paint(Graphics g)
  {
     Graphics2D g2 = (Graphics2D) g;

     g2.setColor (Color.red);
     g2.translate (200, 100);
     g2.rotate ((60 * java.lang.Math.PI) / 180);
     g2.fillRect (0, 0, 100, 100);

     g2.setTransform (new AffineTransform ());  // set to identity

     AlphaComposite ac;
     ac =  AlphaComposite.getInstance (AlphaComposite.SRC_OVER, 0.5f);
     g2.setComposite (ac);

     g2.setColor (Color.orange);
     g2.fillRect (150, 50, 100, 100);

     g2.setColor (Color.green);
     g2.fillRect (225, 125, 100, 100);

     g2.setColor (Color.blue);
     g2.fillRect (150, 175, 100, 100);

     g2.setColor (Color.yellow);
     g2.fillRect (75, 125, 100, 100);
  }
}