Go语言视频零基础入门到精通

javalearner

程序运行图：

   

  import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.*;
import javax.swing.*;
  
  
   
   
   

   
  

  public class TransformTest
{  public static void main(String[] args)
    {  JFrame frame = new TransformTestFrame();
       frame.show();
    }
}

class TransformTestFrame extends JFrame
    implements ActionListener
{  public TransformTestFrame()
    {  setTitle("TransformTest");
       setSize(400, 400);
       addWindowListener(new WindowAdapter()
          {  public void windowClosing(WindowEvent e)
             {  System.exit(0);
             }
          } );

       Container contentPane = getContentPane();
       canvas = new TransformPanel();
       contentPane.add(canvas, "Center");

       JPanel buttonPanel = new JPanel();
       ButtonGroup group = new ButtonGroup();

       rotateButton = new JRadioButton("Rotate", true);
       buttonPanel.add(rotateButton);
       group.add(rotateButton);
       rotateButton.addActionListener(this);

       translateButton = new JRadioButton("Translate", false);
       buttonPanel.add(translateButton);
       group.add(translateButton);
       translateButton.addActionListener(this);

       scaleButton = new JRadioButton("Scale", false);
       buttonPanel.add(scaleButton);
       group.add(scaleButton);
       scaleButton.addActionListener(this);

       shearButton = new JRadioButton("Shear", false);
       buttonPanel.add(shearButton);
       group.add(shearButton);
       shearButton.addActionListener(this);

       contentPane.add(buttonPanel, "North");
    }

    public void actionPerformed(ActionEvent event)
    {  Object source = event.getSource();
       if (source == rotateButton) canvas.setRotate();
       else if (source == translateButton) canvas.setTranslate();
       else if (source == scaleButton) canvas.setScale();
       else if (source == shearButton) canvas.setShear();
    }

    private TransformPanel canvas;
    private JRadioButton rotateButton;
    private JRadioButton translateButton;
    private JRadioButton scaleButton;
    private JRadioButton shearButton;
}

class TransformPanel extends JPanel
{  public TransformPanel()
    {  img=new ImageIcon("antialiased.png").getImage();
       t = new AffineTransform();
       setRotate();
    }

    public void paintComponent(Graphics g)
    {  super.paintComponent(g);
       Graphics2D g2 = (Graphics2D)g;
       g2.drawImage(img,0,0,null);//画原图
       g2.translate(getWidth() / 2, getHeight() / 2);//平移坐标轴，将原点移到组件中心
       g2.transform(t);//设置仿射变换
          /* we don"t use setTransform because we want
             to compose with the current translation
          */
       g2.drawImage(img,-50,-50,null);//在新坐标系中画图像
    }

    public void setRotate()
    {  t.setToRotation(Math.toRadians(60));//旋转
       repaint();
    }

    public void setTranslate()
    {  t.setToTranslation(60, 15);//平移
       repaint();
    }

    public void setScale()
    {  t.setToScale(-1, 1);//翻转图像
       repaint();
    }

    public void setShear()
    {  t.setToShear(-0.2, 2);//剪切
       repaint();
    }
      
    private Image img;
    private AffineTransform t;
}
  

  
  
   
   

     
   

     
   
  



源码下载：http://file.javaxxz.com/2014/10/30/235530281.zip