RearrangeTiles.java

Go to the documentation of this file.

package micropolisj.build_tool;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.*;
import javax.imageio.*;
import javax.swing.ImageIcon;

public class RearrangeTiles
{
        static final int DEST_COLUMNS = 16;
        static final int TILE_SIZE = 16;

        public static void main(String [] args)
                throws Exception
        {
                File inputFile = new File(args[0]);
                File outputFile = new File(args[1]);

                // read in the image
                Image srcImage = new ImageIcon(inputFile.toString()).getImage();
                int srcCols = srcImage.getWidth(null) / TILE_SIZE;
                int srcRows = srcImage.getHeight(null) / TILE_SIZE;
                int ntiles = srcRows * srcCols;

                // actually assemble the image
                int destCols = DEST_COLUMNS;
                int destRows = (ntiles + destCols-1) / destCols;
                BufferedImage buf = new BufferedImage(TILE_SIZE*DEST_COLUMNS,TILE_SIZE*destRows,BufferedImage.TYPE_INT_RGB);
                Graphics2D gr = buf.createGraphics();

                for (int i = 0; i < ntiles; i++) {

                        int srcRow = i / srcCols;
                        int srcCol = i % srcCols;

                        int destRow = i / destCols;
                        int destCol = i % destCols;

                        gr.drawImage(
                                srcImage,
                                destCol*TILE_SIZE, destRow*TILE_SIZE,
                                (destCol+1)*TILE_SIZE,(destRow+1)*TILE_SIZE,
                                srcCol*TILE_SIZE, srcRow*TILE_SIZE,
                                (srcCol+1)*TILE_SIZE, (srcRow+1)*TILE_SIZE,
                                null);
                }

                ImageIO.write(buf, "png", outputFile);
        }
}