ascii-art-java

A funny Java example to create an ASCII art graphic. The concept is simple, get the image’s rgb color in “integer mode”, later, replace the color’s integer with ascii text.

P.S This example is credit to this post and this post.

ASCIIArt.java

package com.mkyong;

import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class ASCIIArt {

  public static void main(String[] args) throws IOException {

	int width = 100;
	int height = 30;

        //BufferedImage image = ImageIO.read(new File("/Users/mkyong/Desktop/logo.jpg"));
	BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
	Graphics g = image.getGraphics();
	g.setFont(new Font("SansSerif", Font.BOLD, 24));

	Graphics2D graphics = (Graphics2D) g;
	graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
				RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
	graphics.drawString("JAVA", 10, 20);

	//save this image
	//ImageIO.write(image, "png", new File("/users/mkyong/ascii-art.png"));

	for (int y = 0; y < height; y++) {
		StringBuilder sb = new StringBuilder();
		for (int x = 0; x < width; x++) {

			sb.append(image.getRGB(x, y) == -16777216 ? " " : "$");
				
		}

		if (sb.toString().trim().isEmpty()) {
			continue;
		}

		System.out.println(sb);
	}

  }

}

Output


           $$$$       $$$$       $$$          $$$      $$$$          
            $$$$       $$$$       $$$$        $$$$      $$$$          
            $$$$       $$$$$      $$$$        $$$$      $$$$$         
            $$$$      $$$$$$       $$$$       $$$      $$$$$$         
            $$$$      $$$$$$$      $$$$      $$$$      $$$$$$$        
            $$$$      $$$$$$$       $$$      $$$       $$$$$$$        
            $$$$     $$$$$$$$       $$$$     $$$      $$$$$$$$        
            $$$$     $$$  $$$$      $$$$    $$$$      $$$  $$$$       
            $$$$    $$$$  $$$$       $$$    $$$      $$$$  $$$$       
            $$$$    $$$    $$$$      $$$$   $$$      $$$    $$$$      
            $$$$    $$$    $$$$       $$$  $$$$      $$$    $$$$      
            $$$$   $$$$$$$$$$$$       $$$$ $$$      $$$$$$$$$$$$      
            $$$$   $$$$$$$$$$$$$      $$$$$$$$      $$$$$$$$$$$$$     
            $$$$  $$$$$$$$$$$$$$       $$$$$$$     $$$$$$$$$$$$$$     
            $$$$  $$$$       $$$$      $$$$$$      $$$$       $$$$    
            $$$$  $$$        $$$$      $$$$$$      $$$        $$$$    
            $$$$ $$$$        $$$$       $$$$      $$$$        $$$$    
            $$$$ $$$          $$$$      $$$$      $$$          $$$$   
            $$$                                                       
       $$$$$$$$                                                       
       $$$$$$$                                                        
       $$$$$$                                                                       
What is -1677216?
The color code, in this case all colors "-1677216" are replaced with empty " ". This is the idea to generate the ASCII art graphic. Try load an image, and print out the rgb color, you will noticed that different color has different code.

References

  1. Wiki : ASCII Art
  2. Stackoverflow - ascii art in Java
  3. Creating a Graphic form of the Provided Integer