Java 形状转换为 BufferedImage

Question

我想在 JLabel 上制作矩形并将该矩形转换为 BufferedImage...就像油漆店中的图层...拖动 BufferedImage 并调整大小...谁能帮忙

我已经这样做了，但是没有用

Rectangle2D rectangle2D;
                            BufferedImage bi = new BufferedImage(bimg.getWidth(), bimg.getHeight(), BufferedImage.TYPE_INT_RGB);
                            Graphics2D big = bi.createGraphics();
                            rectangle2D = new Rectangle2D.Float(eX, eY, sW, sH);
                            big.setStroke(new BasicStroke(5));
                            big.setColor(color);
                            shapePaint = new TexturePaint(bi, rectangle2D);
                            g2d.setPaint(shapePaint);

Answer 1

我想在 JLabel 上制作矩形并将该矩形转换为 BufferedImage

你做错了。绘制到缓冲图像，将其添加到标签，调用label.repaint() 以显示任何更改。

例如

如中所见..

1. This answer
   
2. This answer
   
   
3. This answer 或..
   
4. ..动画版，this answer