Created by numworks

Created on April 11, 2018

742 Bytes

Ce script contient une fonction qui trace une fractale de Mandelbrot avec un nombre d’itérations donné en argument. Par exemple, pour 20 itérations, demander : mandelbrot(20).

# This script draws a Mandelbrot fractal set
# N_iteration: degree of precision
import kandinsky
def mandelbrot(N_iteration):
  for x in range(320):
    for y in range(222):
# Compute the mandelbrot sequence for the point c = (c_r, c_i) with start value z = (z_r, z_i)
      z = complex(0,0)
# Rescale to fit the drawing screen 320x222
      c = complex(3.5*x/319-2.5, -2.5*y/221+1.25)
      i = 0
      while (i < N_iteration) and abs(z) < 2:
        i = i + 1
        z = z*z+c
# Choose the color of the dot from the Mandelbrot sequence
      rgb = int(255*i/N_iteration)
      col = kandinsky.color(int(rgb),int(rgb*0.75),int(rgb*0.25))
# Draw a pixel colored in 'col' at position (x,y)