Java BufferedImage Slice sliceImage(BufferedImage img, int cols, int rows)

Description

Split up an image into cols by rows tiles

License

Open Source License

Parameter

Parameter	Description
img	The image to slice
cols	The total number of columns in the source image
rows	The total number of rows in the source image

Return

Returns a BufferedImage array, one entry per slice

Declaration

public static BufferedImage[] sliceImage(BufferedImage img, int cols, int rows) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

public class Main {
    /**//  ww w  .  j a  v a2s  .  c  o m
     * Split up an image into cols by rows tiles
     * 
     * @param img
     *            The image to slice
     * @param cols
     *            The total number of columns in the source image
     * @param rows
     *            The total number of rows in the source image
     * @return Returns a BufferedImage array, one entry per slice
     */
    public static BufferedImage[] sliceImage(BufferedImage img, int cols, int rows) {
        // create container for our slices
        BufferedImage[] result = new BufferedImage[cols * rows];

        // cache character size
        int characterWidth = img.getWidth() / cols;
        int characterHeight = img.getHeight() / rows;

        // init slice index
        int index = 0;

        for (int row = 0; row < rows; row++) {
            for (int col = 0; col < cols; col++, index++) {
                // create new image for slice
                result[index] = new BufferedImage(characterWidth, characterHeight, img.getType());

                // Use the slice as our graphics context
                Graphics2D g = result[index].createGraphics();

                // calculate tile's bounding box
                int x1 = characterWidth * col;
                int y1 = characterHeight * row;
                int x2 = x1 + characterWidth;
                int y2 = y1 + characterHeight;

                // draw slice
                g.drawImage(img, 0, 0, characterWidth, characterHeight, x1, y1, x2, y2, null);

                // we're done with the graphics context
                g.dispose();
            }
        }

        return result;
    }
}

Related

1. sliceImage(BufferedImage img, int verticalSize)