Java BufferedImage Rotate rotate(BufferedImage bi, int degree)

Description

Perform a rotation of the provided BufferedImage using degrees of 90, 180, or 270.

License

Open Source License

Parameter

Parameter	Description
bi	BufferedImage to be rotated
degree	a parameter

Return

rotated BufferedImage instance

Declaration

public static BufferedImage rotate(BufferedImage bi, int degree) 

Method Source Code

//package com.java2s;
/*/*from   w w  w .j  a  v  a  2s .  c  o  m*/
 * Copyright (c) 2008  Los Alamos National Security, LLC.
 *
 * Los Alamos National Laboratory
 * Research Library
 * Digital Library Research & Prototyping Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * 
 */

import java.awt.image.BufferedImage;

public class Main {
    /**
     * Perform a rotation of the provided BufferedImage using degrees of
     * 90, 180, or 270.
     * @param bi BufferedImage to be rotated
     * @param degree 
     * @return rotated BufferedImage instance
     */
    public static BufferedImage rotate(BufferedImage bi, int degree) {
        int width = bi.getWidth();
        int height = bi.getHeight();

        BufferedImage biFlip;
        if (degree == 90 || degree == 270)
            biFlip = new BufferedImage(height, width, bi.getType());
        else if (degree == 180)
            biFlip = new BufferedImage(width, height, bi.getType());
        else
            return bi;

        if (degree == 90) {
            for (int i = 0; i < width; i++)
                for (int j = 0; j < height; j++)
                    biFlip.setRGB(height - j - 1, i, bi.getRGB(i, j));
        }

        if (degree == 180) {
            for (int i = 0; i < width; i++)
                for (int j = 0; j < height; j++)
                    biFlip.setRGB(width - i - 1, height - j - 1, bi.getRGB(i, j));
        }

        if (degree == 270) {
            for (int i = 0; i < width; i++)
                for (int j = 0; j < height; j++)
                    biFlip.setRGB(j, width - i - 1, bi.getRGB(i, j));
        }

        bi.flush();
        bi = null;

        return biFlip;
    }
}

Related

1. rotate(BufferedImage bi, double rotateValue)
2. rotate(BufferedImage image, double theta)
3. rotate(BufferedImage image, double theta, int anchorX, int anchorY)
4. rotate(BufferedImage image, float theRadiansAngle)
5. rotate(BufferedImage image, int degrees)