• fullscreen
  • TriangleSierpinski.pde
  • /*
     * Triangle of Sierpinski.
     * Auteur : Maeln
     * Licence : CC0 1.0 Universal
     * Licence url : http://creativecommons.org/publicdomain/zero/1.0/
    void setup() {
      size(800, 800);
      colorMode(HSB, 8, 100, 100);
      triangleSier(0, 700, 400, 0, 800, 700, 7);
    void triangleSier(float x1, float y1, float x2, float y2, float x3, float y3, int n) {
      // 'n' is the number of iteration.
      if ( n > 0 ) {
        fill(0, 128/n, 128);
        triangle(x1, y1, x2, y2, x3, y3);
        // Calculating the midpoints of all segments.
        float h1 = (x1+x2)/2.0;
        float w1 = (y1+y2)/2.0;
        float h2 = (x2+x3)/2.0;
        float w2 = (y2+y3)/2.0;
        float h3 = (x3+x1)/2.0;
        float w3 = (y3+y1)/2.0;
        // Trace the triangle with the new coordinates.
        triangleSier(x1, y1, h1, w1, h3, w3, n-1);
        triangleSier(h1, w1, x2, y2, h2, w2, n-1);
        triangleSier(h3, w3, h2, w2, x3, y3, n-1);


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    This sketch is running as Java applet, exported from Processing.



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    Triangle of Sierpinski

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    A simple way to make a triangle of Sierpinski with Processing.

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