Beispiel #1
0
 public static BufferedImage cropImage(BufferedImage bi, int x, int y, int w, int h) {
   BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
   Graphics2D g2 = image.createGraphics();
   g2.setRenderingHint(
       RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
   g2.setPaint(Color.white);
   g2.fillRect(0, 0, w, h);
   g2.drawImage(bi, -x, -y, null); // this);
   g2.dispose();
   return image;
 }
Beispiel #2
0
 public static BufferedImage scaleImage(BufferedImage bi, double scale) {
   int w1 = (int) (Math.round(scale * bi.getWidth()));
   int h1 = (int) (Math.round(scale * bi.getHeight()));
   BufferedImage image = new BufferedImage(w1, h1, BufferedImage.TYPE_INT_RGB);
   Graphics2D g2 = image.createGraphics();
   g2.setRenderingHint(
       RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
   g2.setPaint(Color.white);
   g2.fillRect(0, 0, w1, h1);
   g2.drawImage(bi, 0, 0, w1, h1, null); // this);
   g2.dispose();
   return image;
 }
Beispiel #3
0
 public static BufferedImage rotateImage(BufferedImage bi) {
   int w = bi.getWidth();
   int h = bi.getHeight();
   BufferedImage image = new BufferedImage(h, w, BufferedImage.TYPE_INT_RGB);
   Graphics2D g2 = image.createGraphics();
   g2.setRenderingHint(
       RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
   g2.setPaint(Color.white); // getBackground());
   g2.fillRect(0, 0, h, w);
   g2.rotate(90 * Math.PI / 180);
   g2.drawImage(bi, 0, -h, w, h, null); // this);
   g2.dispose();
   return image;
 }
Beispiel #4
0
 /** [Advanced] */
 public void dispose() {
   Graphics2D g = getG();
   if (g != null) g.dispose();
 }