複製和鏡像GeneralPath

Question

有沒有辦法複製一般路徑，鏡像它，並將其移動？

我正在創造一個卡通人物，我意識到她的左側的頭髮，身體和右側一樣。

例如：

我做她的頭髮和身體的左半部分和代碼很長。

所以爲了更快地完成角色，我想也許有一種方法可以複製代碼，水平翻轉並將其移動到正確的位置。

我有這樣的示例代碼：

public void paint(Graphics g) 
{ 
    Graphics2D g2d = (Graphics2D) g; 
    GeneralPath body, mirror; 

    body = new GeneralPath(); 
    mirror = new GeneralPath(); 

    body.moveTo(205.5,97); 
    body.lineTo(207,132); 
    body.quadTo(193,105, 197,80); 
    body.curveTo(188,98, 156,127, 159,167); 
    body.quadTo(163,174, 166,184); 
    body.curveTo(173,196, 193,210, 213,208); 
    body.curveTo(247,208, 267,196, 274,184); 

    g2d.setPaint(new Color(255,251,223)); 
    g2d.fill(body); 
    g2d.setPaint(Color.black); 
    g2d.draw(body); 

    //mirror = duplicate(body) 
    //flip(mirror) 
    //mirror.moveTo(x,y) 
    //..something like that 
} 

Answer 1

您可以使用一個轉換。有關示例，請參閱Transforming Shapes, Text, and Images教程。

這是基於問題的原始代碼的例子：

import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.Graphics; 
import java.awt.Graphics2D; 
import java.awt.geom.AffineTransform; 
import java.awt.geom.GeneralPath; 

import javax.swing.JOptionPane; 
import javax.swing.JPanel; 
import javax.swing.SwingUtilities; 

public class Test { 
    public static void main(String[] args) { 
     SwingUtilities.invokeLater(new Runnable() { 
      public void run() { 
       final JPanel panel = new JPanel() { 
        @Override 
        public Dimension getPreferredSize() { 
         return new Dimension(600, 300); 
        } 

        @Override 
        protected void paintComponent(Graphics g) { 
         super.paintComponents(g); 
         final Graphics2D g2d = (Graphics2D) g.create(); 

         try { 
          GeneralPath body, mirror; 

          body = new GeneralPath(); 
          mirror = new GeneralPath(); 

          body.moveTo(205.5, 97); 
          body.lineTo(207, 132); 
          body.quadTo(193, 105, 197, 80); 
          body.curveTo(188, 98, 156, 127, 159, 167); 
          body.quadTo(163, 174, 166, 184); 
          body.curveTo(173, 196, 193, 210, 213, 208); 
          body.curveTo(247, 208, 267, 196, 274, 184); 

          g2d.setPaint(new Color(255, 251, 223)); 
          g2d.fill(body); 
          g2d.setPaint(Color.black); 
          g2d.draw(body); 

          AffineTransform tx = AffineTransform 
            .getScaleInstance(-1, 1); 
          tx.translate(-274 * 2, 0); 
          g2d.transform(tx); 

          g2d.setPaint(Color.YELLOW); 
          g2d.fill(body); 
          g2d.setPaint(Color.BLACK); 
          g2d.draw(body); 
         } finally { 
          g2d.dispose(); 
         } 
        } 
       }; 
       JOptionPane.showMessageDialog(null, panel, "Mirror", 
         JOptionPane.INFORMATION_MESSAGE); 
      } 
     }); 
    } 
} 

結果看起來是這樣的：