L-Systems : Dragon Curve Fractal [Modified]

Psycho_Coder · 09-16-2014, 04:39 PM

I made this Dragon Fractal in Java. Its a bit modified. Next time I will make a better one with animation Biggrin

Code:
package dragon;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.imageio.ImageIO;

public final class DragonCurve {

	private BufferedImage img = null;
	private int IMG_WIDTH;
	private int IMG_HEIGHT;

	private GraphicsEnvironment ge = null;
	private GraphicsDevice gd = null;
	private GraphicsConfiguration gc = null;

	public DragonCurve() {
		IMG_WIDTH = 1400;
		IMG_HEIGHT = 1400;

		ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
		gd = ge.getDefaultScreenDevice();
		gc = gd.getDefaultConfiguration();

	}

	private void createDragonFractal() {
		Graphics g = null;
		Graphics2D g2d = (Graphics2D) g;

		img = new BufferedImage(IMG_WIDTH, IMG_HEIGHT,
				BufferedImage.TYPE_INT_RGB);
		img = gc.createCompatibleImage(IMG_WIDTH, IMG_HEIGHT);
		g2d = img.createGraphics();
		g2d.setColor(Color.black);
		g2d.fillRect(0, 0, IMG_WIDTH, IMG_HEIGHT);
		g2d.setColor(Color.red);
		dragonRecur(300, 500, 1000, 1100, 20, g2d);
		g2d.drawImage(img, 0, 0, null);
		g2d.dispose();
		writeImage();

	}

	private void writeImage() {
		File file = new File("pic.png");
		try {
			file.createNewFile();
			OutputStream out = new FileOutputStream(file);
			ImageIO.write(img, "png", out);
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	private void dragonRecur(int x1, int y1, int x2, int y2, int k,
			Graphics2D g2d) {
		if (k > 0) {
			int xn = (x1 + x2) / 2 + (y2 - y1) / 2;
			int yn = (y1 + y2) / 2 - (x2 - x1) / 2;
			dragonRecur(x2, y2, xn, yn, k - 1, g2d);
			dragonRecur(x1, y1, xn, yn, k - 1, g2d);
		} else {
			g2d.drawLine(x1, y1, x2, y2);
		}
	}

	public static void main(String... strings) {
		new DragonCurve().createDragonFractal();
	}

}

Sample Output

[Image: vpmPoOv.png]

Source

Psycho_Coder · 09-16-2014, 04:39 PM

I made this Dragon Fractal in Java. Its a bit modified. Next time I will make a better one with animation Biggrin

Code:
package dragon;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.imageio.ImageIO;

public final class DragonCurve {

	private BufferedImage img = null;
	private int IMG_WIDTH;
	private int IMG_HEIGHT;

	private GraphicsEnvironment ge = null;
	private GraphicsDevice gd = null;
	private GraphicsConfiguration gc = null;

	public DragonCurve() {
		IMG_WIDTH = 1400;
		IMG_HEIGHT = 1400;

		ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
		gd = ge.getDefaultScreenDevice();
		gc = gd.getDefaultConfiguration();

	}

	private void createDragonFractal() {
		Graphics g = null;
		Graphics2D g2d = (Graphics2D) g;

		img = new BufferedImage(IMG_WIDTH, IMG_HEIGHT,
				BufferedImage.TYPE_INT_RGB);
		img = gc.createCompatibleImage(IMG_WIDTH, IMG_HEIGHT);
		g2d = img.createGraphics();
		g2d.setColor(Color.black);
		g2d.fillRect(0, 0, IMG_WIDTH, IMG_HEIGHT);
		g2d.setColor(Color.red);
		dragonRecur(300, 500, 1000, 1100, 20, g2d);
		g2d.drawImage(img, 0, 0, null);
		g2d.dispose();
		writeImage();

	}

	private void writeImage() {
		File file = new File("pic.png");
		try {
			file.createNewFile();
			OutputStream out = new FileOutputStream(file);
			ImageIO.write(img, "png", out);
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	private void dragonRecur(int x1, int y1, int x2, int y2, int k,
			Graphics2D g2d) {
		if (k > 0) {
			int xn = (x1 + x2) / 2 + (y2 - y1) / 2;
			int yn = (y1 + y2) / 2 - (x2 - x1) / 2;
			dragonRecur(x2, y2, xn, yn, k - 1, g2d);
			dragonRecur(x1, y1, xn, yn, k - 1, g2d);
		} else {
			g2d.drawLine(x1, y1, x2, y2);
		}
	}

	public static void main(String... strings) {
		new DragonCurve().createDragonFractal();
	}

}

Sample Output

[Image: vpmPoOv.png]

Source

Psycho_Coder · 09-16-2014, 04:39 PM

I made this Dragon Fractal in Java. Its a bit modified. Next time I will make a better one with animation Biggrin

Code:
package dragon;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.imageio.ImageIO;

public final class DragonCurve {

	private BufferedImage img = null;
	private int IMG_WIDTH;
	private int IMG_HEIGHT;

	private GraphicsEnvironment ge = null;
	private GraphicsDevice gd = null;
	private GraphicsConfiguration gc = null;

	public DragonCurve() {
		IMG_WIDTH = 1400;
		IMG_HEIGHT = 1400;

		ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
		gd = ge.getDefaultScreenDevice();
		gc = gd.getDefaultConfiguration();

	}

	private void createDragonFractal() {
		Graphics g = null;
		Graphics2D g2d = (Graphics2D) g;

		img = new BufferedImage(IMG_WIDTH, IMG_HEIGHT,
				BufferedImage.TYPE_INT_RGB);
		img = gc.createCompatibleImage(IMG_WIDTH, IMG_HEIGHT);
		g2d = img.createGraphics();
		g2d.setColor(Color.black);
		g2d.fillRect(0, 0, IMG_WIDTH, IMG_HEIGHT);
		g2d.setColor(Color.red);
		dragonRecur(300, 500, 1000, 1100, 20, g2d);
		g2d.drawImage(img, 0, 0, null);
		g2d.dispose();
		writeImage();

	}

	private void writeImage() {
		File file = new File("pic.png");
		try {
			file.createNewFile();
			OutputStream out = new FileOutputStream(file);
			ImageIO.write(img, "png", out);
			out.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	private void dragonRecur(int x1, int y1, int x2, int y2, int k,
			Graphics2D g2d) {
		if (k > 0) {
			int xn = (x1 + x2) / 2 + (y2 - y1) / 2;
			int yn = (y1 + y2) / 2 - (x2 - x1) / 2;
			dragonRecur(x2, y2, xn, yn, k - 1, g2d);
			dragonRecur(x1, y1, xn, yn, k - 1, g2d);
		} else {
			g2d.drawLine(x1, y1, x2, y2);
		}
	}

	public static void main(String... strings) {
		new DragonCurve().createDragonFractal();
	}

}

Sample Output

[Image: vpmPoOv.png]

Source

shadowwolf91 · 09-16-2014, 05:54 PM

Thats pretty sweet man

shadowwolf91 · 09-16-2014, 05:54 PM

Thats pretty sweet man

h3r0 · 09-16-2014, 07:55 PM

You should check out electric sheep. Their website is down so here is the wikipedia page. http://en.wikipedia.org/wiki/Electric_Sheep
http://electricsheep.org/

h3r0 · 09-16-2014, 07:55 PM

You should check out electric sheep. Their website is down so here is the wikipedia page. http://en.wikipedia.org/wiki/Electric_Sheep
http://electricsheep.org/

Psycho_Coder · 09-17-2014, 02:44 AM

(09-16-2014, 07:55 PM)h3r0 Wrote: You should check out electric sheep. Their website is down so here is the wikipedia page. http://en.wikipedia.org/wiki/Electric_Sheep
http://electricsheep.org/

Ah I didn't knew about that one. I need the math functions else I won't be able to make it. Well I will Google Biggrin

Psycho_Coder · 09-17-2014, 02:44 AM

(09-16-2014, 07:55 PM)h3r0 Wrote: You should check out electric sheep. Their website is down so here is the wikipedia page. http://en.wikipedia.org/wiki/Electric_Sheep
http://electricsheep.org/

Ah I didn't knew about that one. I need the math functions else I won't be able to make it. Well I will Google Biggrin

h3r0 · 09-17-2014, 02:46 AM

(09-17-2014, 02:44 AM)Psycho_Coder Wrote:
(09-16-2014, 07:55 PM)h3r0 Wrote: You should check out electric sheep. Their website is down so here is the wikipedia page. http://en.wikipedia.org/wiki/Electric_Sheep
http://electricsheep.org/

Ah I didn't knew about that one. I need the math functions else I won't be able to make it. Well I will Google

My favorite thing about electric sheep though is that many computers are creating these fractal frames evolving the animation.