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# Sierpinski Triangle

andreisophie Mar 26th, 2019 (edited) 82 Never
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1. #include <graphics.h>
2.
3. void triunghi(int x1, int y1, int x2, int y2, int x3, int y3)
4. {
5.     line(x1,y1,x2,y2);
6.     line(x1,y1,x3,y3);
7.     line(x2,y2,x3,y3);
8. }
9.
10. void triunghiR(int x1, int y1, int x2, int y2, int x3, int y3)
11. {
12.     triunghi((x1+x2)/2,(y1+y2)/2,(x1+x3)/2,(y1+y3)/2,(x2+x3)/2,(y2+y3)/2);
13.     if (x3-x1>8)
14.     {
15.         triunghiR((x1+x2)/2,(y1+y2)/2,x2,y2,(x2+x3)/2,(y2+y3)/2);
16.         triunghiR(x1,y1,(x1+x2)/2,(y1+y2)/2,(x1+x3)/2,(y1+y3)/2);
17.         triunghiR((x1+x3)/2,(y1+y3)/2,(x2+x3)/2,(y2+y3)/2,x3,y3);
18.     }
19. }
20.
21. void Sierpinski(int x1, int y1, int x2, int y2, int x3, int y3)
22. {
23.     triunghi(x1,y1,x2,y2,x3,y3);
24.     triunghiR(x1,y1,x2,y2,x3,y3);
25. }
26.
27. int main()
28. {
29.     initwindow(1200, 1000);
30.
31.     const int x1=100,x2=getmaxx()-100,x3=getmaxx()/2;
32.     const int y1=40+(x2-x1)*0.866,y2=y1,y3=40;
33.
34.
35.     setcolor(14);
36.     Sierpinski(x1,y1,x2,y2,x3,y3);
37.
38.     getch();
39.     cleardevice();
40.     closegraph();
41.
42.     return 0;
43. }
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