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An API for reading, writing and manipulating fonts, images and sounds.

There is a newer version: 1.1.0

/*
 * Copyright (c) 2013-2018, João Vitor Verona Biazibetti - All Rights Reserved
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see .
 *
 * https://www.github.com/BloodShura
 */

package com.github.bloodshura.x.assets.util;

import com.github.bloodshura.x.assets.XAssets;
import com.github.bloodshura.x.assets.image.Image;

import javax.annotation.Nonnull;
import java.awt.image.BufferedImage;

public class MandelbrotSet {
	private int iterations;
	private double zoom;

	public MandelbrotSet() {
		this.iterations = 100;
		this.zoom = 1.0D;
	}

	public void generate(@Nonnull BufferedImage image) {
		double zX;
		double zY;
		double cX;
		double cY;
		double tmp;

		for (int y = 0; y < image.getHeight(); y++) {
			for (int x = 0; x < image.getWidth(); x++) {
				int iter = getIterations();

				zX = 0.0D;
				zY = 0.0D;
				cX = (x - image.getWidth() / 2) / getZoom();
				cY = (y - image.getHeight() / 2) / getZoom();

				while (zX * zX + zY * zY < 4 && iter > 0) {
					tmp = zX * zX - zY * zY + cX;
					zY = 2.0D * zX * zY + cY;
					zX = tmp;
					iter--;
				}

				image.setRGB(x, y, iter | (iter << 8));
			}
		}
	}

	public void generate(@Nonnull Image image) {
		generate(image.getImage());
	}

	@Nonnull
	public Image generate(int width, int height) {
		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

		generate(image);

		return XAssets.getLoader().getImage(image);
	}

	public int getIterations() {
		return iterations;
	}

	public double getZoom() {
		return zoom;
	}

	public void setIterations(int iterations) {
		this.iterations = iterations;
	}

	public void setZoom(double zoom) {
		this.zoom = zoom;
	}
}