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How to draw on a BufferedImage |
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This Java tip demonstrates a method of drawing on a buffered image. This involves
creating a graphics context on the buffered image.
// No. 1
// Create a graphics context on the buffered image
Graphics2D g2d = bimage.createGraphics();
// Draw on the buffered image
g2d.setColor(Color.red);
g2d.fill(new Ellipse2D.Float(0, 0, 200, 100));
g2d.dispose();
// No.2
// In case the buffered image supports transparency
g2d = bimage.createGraphics();
// Transparency is created on all the filled pixels
Color transparent = new Color(0, 0, 0, 0);
g2d.setColor(transparent);
g2d.setComposite(AlphaComposite.Src);
g2d.fill(new Rectangle2D.Float(20, 20, 100, 20));
g2d.dispose();
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