mandelbrot

val WIDTH: int = 800;
val HEIGHT: int = 600;
val MAX_ITER: int = 100;

fun main() {
  imu width_f := WIDTH as float;
  imu height_f := HEIGHT as float;

  mut checksum: int = 0;

  for y := 0..HEIGHT {
    for x := 0..WIDTH {
      imu cr := (x as float) / width_f * 3.0 - 2.0;
      imu ci := (y as float) / height_f * 2.24 - 1.12;

      mut zr: float = 0.0;
      mut zi: float = 0.0;
      mut iter: int = 0;

      while zr * zr + zi * zi <= 4.0 && iter < MAX_ITER {
        imu temp := zr * zr - zi * zi + cr;
        zi = 2.0 * zr * zi + ci;
        zr = temp;
        iter += 1;
      }

      checksum += iter;
    }
  }

  showln(checksum);
}