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Sep 13th, 2017
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  1. public void turn(int x0, int y0) {
  2. //x = -(y0 - y) + x;
  3. //y = (x0 - x) + y;
  4. double beta =0;
  5. if((x-x0)!=0)
  6. {
  7. double alpha = Math.atan(Math.abs(y - y0) / Math.abs(x - x0));
  8. beta = alpha - 90;
  9. if (beta < 0)
  10. {
  11. beta = 360 - beta;
  12. }
  13. }
  14.  
  15. //blokje onder middelpunt
  16. if((x-x0)==0 && y > y0)
  17. {
  18. beta = 180;
  19. }
  20.  
  21. //blokje boven middelpunt
  22. if((x-x0)==0 && y < y0)
  23. {
  24. beta = 0;
  25. }
  26. double p = x0 + (Math.sqrt((x - x0) ^ 2 + (y - y0) ^ 2)) * Math.cos(beta);
  27. double q = y0 + (Math.sqrt((x - x0) ^ 2 + (y - y0) ^ 2)) * Math.sin(beta);
  28. x = (int) p;
  29. y = (int) q;
  30. }
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