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  1. //q12243404442
  2.  
  3. class Cyc {
  4.   int index;
  5.   int max;
  6.   ArrayList<PVector> dirs;
  7.  
  8.   Cyc(int max) {
  9.     this.max = max;
  10.     index = 0;
  11.  
  12.     dirs = new ArrayList<PVector>();
  13.  
  14.     for(int i=0; i<max; i++){
  15.       float x = cos(i*TWO_PI/max);
  16.       float y = sin(i*TWO_PI/max);
  17.       dirs.add(new PVector(x, y));
  18.     }
  19.   }
  20.  
  21.   PVector get() {
  22.     return dirs.get(index);
  23.   }
  24.   void next() {
  25.     index++;
  26.     if (index == max) {
  27.       index = 0;
  28.     }
  29.   }
  30. }
  31.  
  32. void setup() {
  33.   size(800, 600);
  34.  
  35.   Cyc cyc = new Cyc(4);
  36.   PVector start = new PVector(width/2, height/2);
  37.   PVector end = new PVector(width/2, height/2);
  38.  
  39.   background(0);
  40.  
  41.   float w = 30;
  42.   PVector d = new PVector(w, w);
  43.   PVector base = new PVector(w, w);
  44.  
  45.   stroke(255);
  46.  
  47.   int loop = 37;
  48.   for (int i=0; i<loop; i++) {
  49.     if (i>0) {
  50.       if (i%2==0) {
  51.         d.add(base);
  52.       }
  53.     }
  54.  
  55.     end.add(new PVector(d.x*cyc.get().x, d.y*cyc.get().y));
  56.     cyc.next();
  57.  
  58.     line(start.x, start.y, end.x, end.y);
  59.  
  60.     start = end.copy();
  61.   }
  62. }
  63.  
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https://ideone.com/MXmeBv
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Text (text 6.10)
created:
4 years ago
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