Mandelbrot (Linux)

Language: Iodine, Platform: Island, Category: Command Line
https://github.com/remobjects/ElementsSamples/tree/master/Iodine/Island/Command Line/Mandelbrot (Linux)

• Mandelbrot
  • References
    • gc
    • Island
    • rtl
  • Source Files
    • Program.java
  • Other Files

Program.java

package mandelbrot;

/*
This example demonstrates using varying density characters to render the
Mandelbrot set out to stdout
*/

public class ConsoleApp
{
    public static void Main(String []args)
    {
        
        int cols = 78;
        int lines = 30;
        
        char []chars = new char[] {' ','.',',','`','\'',':','=','|','+','i','h','I','H','E','O','Q','S','B','#','$'};;
        
        int maxIter = length(chars);
        
        double minRe = -2.0;
        double maxRe = 1.0;
        double minIm = -1.0;
        double maxIm = 1.0;
        double im = minIm;
        
        while (im <= maxIm)
        {
            double re = minRe;
            while (re <= maxRe)
            {
                double zr = re;
                double zi = im;
                int n = -1;
                while (n < maxIter-1)
                {
                    n++;
                    double a = zr * zr;
                    double b = zi * zi;
                    if (a + b > 4.0) break;
                    zi = 2 * zr * zi + im;
                    zr = a - b + re;
                }
                write(chars[n]);
                re += (maxRe - minRe) / (Double)cols;
            }
            writeLn();
            im += (maxIm - minIm) / (Double)lines;
        }
    }
}