Java BufferedImage Crop cropToAspectRatio(BufferedImage image, float aspect)

Description

Crops a image to a specific aspect ration

License

Open Source License

Parameter

Parameter	Description
image	is the actual image to crop
aspect	is the aspect ratio to convert the image to

Return

a new image with the specified aspect ratio

Declaration

public static BufferedImage cropToAspectRatio(BufferedImage image, float aspect) 

Method Source Code

//package com.java2s;
/*/*w w w.  ja  v  a2 s.c  o  m*/
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Ziver Koc
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import java.awt.image.BufferedImage;

public class Main {
    /**
     * Crops a image to a specific aspect ration
     *
     * @param      image      is the actual image to crop
     * @param      aspect      is the aspect ratio to convert the image to
     * @return               a new image with the specified aspect ratio
     */
    public static BufferedImage cropToAspectRatio(BufferedImage image, float aspect) {
        int x = 0, y = 0;
        int width = image.getWidth();
        int height = image.getHeight();

        // Check if the width is larger than the heigth
        if (width > height) {
            width = (int) (height * aspect);
            x = image.getWidth() / 2 - width / 2;
        } else {
            height = (int) (width * aspect);
            y = image.getHeight() / 2 - height / 2;
        }

        return image.getSubimage(x, y, width, height);
    }
}

Related

1. cropImage(BufferedImage src, int x, int y, int w, int h)
2. cropImage(final BufferedImage img, int x, int y, int w, int h, double xScale, double yScale)
3. cropImageRelative(BufferedImage image, double leftCropFactor, double rightCropFactor, double topCropFactor, double bottomCropFactor)
4. croppedCopy(BufferedImage image, int startX, int startY, int endX, int endY)
5. cropScale(BufferedImage source, int width, int height)
6. cropToBeSameSize(BufferedImage image1, BufferedImage image2)
7. divideImage(BufferedImage bi, int rows, int cols, int width, int height)
8. doCrop(BufferedImage bufferedImage, int cropX, int cropY, int width, int height)
9. drawCropped(JPanel contentPane, ActionListener listener, BufferedImage img, int type, int sx1, int sy1, int sx2, int sy2, int x, int y, int scale)