Java Sierpinski Triangle AND

Java program to generate Sierpinski Triangle (Fractal) of specified resolution using AND algorithm, even in high resolutions – tested for 32768x32768px with increased Java VM  heap size – -Xmx8g option.

Note that size of image must be the power of 2, for example 1024.

Main.java

import javax.imageio.ImageIO;
import java.io.File;

// 2018 TheFlyingKeyboard and released under MIT License
// theflyingkeyboard.net
public class Main {
    public static void main(String[] args) {
        SierpinskiTriangle sierpinskiTriangle = new SierpinskiTriangle();
        try {
            ImageIO.write(sierpinskiTriangle.generate(1024), "png", new File("SierpinskiTriangle.png"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

SierpinskiTriangle.java

import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;

// 2018 TheFlyingKeyboard and released under MIT License
// theflyingkeyboard.net
public class SierpinskiTriangle {
    private final int foregroundColor;
    private final int backgroundColor;

    public SierpinskiTriangle(){
        this.foregroundColor = Color.BLACK.getRGB();
        this.backgroundColor = Color.WHITE.getRGB();

    }

    public SierpinskiTriangle(final Color foregroundColor, final Color backgroundColor){
        this.foregroundColor = foregroundColor.getRGB();
        this.backgroundColor = backgroundColor.getRGB();
    }

    public BufferedImage generate(final int triangleSize){
        BufferedImage bufferedImage = new BufferedImage(triangleSize, triangleSize, BufferedImage.TYPE_INT_RGB);
        int[] imagePixelData = ((DataBufferInt) bufferedImage.getRaster().getDataBuffer()).getData();

        double counter = 0;
        for(int x = 0; x < triangleSize; ++x){
            for(int y = 0; y < triangleSize; ++y){
                if((x & y) == 0){
                    imagePixelData[y * triangleSize + x] = foregroundColor;
                }else{
                    imagePixelData[y * triangleSize + x] = backgroundColor;
                }

                ++counter;
            }

            System.out.println((counter / (triangleSize * triangleSize)) * 100.0f + "%");
        }

        return bufferedImage;
    }
}