DisplFilters

package cg2d.v4jpaint.filters;
import cg2d.v4jpaint.base.BaseFilter;

import java.awt.Point;
import java.awt.image.BufferedImage;


public class DisplFilters implements BaseFilter {

    public BufferedImage process(BufferedImage image){
        int W = image.getWidth();
        int H = image.getHeight();
        BufferedImage result = clone(image);

        Point[][]dmx = new Point[W][H];

        /* Vertical Flip
        for(int x = 0; x < W; x++)
            for(int y = 0; y < H; y++)
                dmx[x][y] = new Point(x, H - y - 1);
        */
        /*Horizontal Flip
        for (int x = 0; x < width; x++)
            for (int y = 0; y < height; y++)
                dmx[x][y] = new Point(width - x - 1, y);
        */

        //Wave
        for(int x = 0; x < W; x++)
            for(int y = 0; y < H; y++){
                int newY = (int) (y + Math.sin(x * 0.03) * 15.0);
                dmx[x][y] = new Point(x, newY);
            }

        for(int x = 0; x < W; x++)
            for(int y = 0; y < H; y++){
                int pixel = image.getRGB(x, y);

                int newX = dmx[x][y].x;
                int newY = dmx[x][y].y;

                if ((newX >= 0) && (newX < W) && (newY >= 0) && (newY < H))
                    result.setRGB(newX, newY, pixel);
                else
                    result.setRGB(x, y, pixel); // ostavi piksel tu gde jeste

            }
        return result;
    }

    private BufferedImage clone(BufferedImage source){
        int W = source.getWidth();
        int H = source.getHeight();
        BufferedImage result = new BufferedImage(W,H,BufferedImage.TYPE_INT_RGB);

        for(int x = 0; x < W; x++)
            for(int y = 0; y < H; y++)
                result.setRGB(x, y, source.getRGB(x, y));


        return result;
    }

}