/xbmc/visualizations/Goom/goom2k4-0/src/goom_tools.h

http://github.com/xbmc/xbmc · C++ Header · 42 lines · 27 code · 11 blank · 4 comment · 0 complexity · 17c766990329405b7e92ede7860e80e5 MD5 · raw file 

    

  1. #ifndef _GOOMTOOLS_H
    2. 

  2. #define _GOOMTOOLS_H
    3. 

  3. 

  4. /**
    5. 

  5.  * Random number generator wrapper for faster random number.
    6. 

  6.  */
    7. 

  7. 

  8. #ifdef _WIN32PC
    9. 

  9. #define inline __inline
    10. 

  10. #ifndef M_PI
    11. 

  11. #define M_PI 3.14159265358979323846
    12. 

  12. #endif
    13. 

  13. #define random rand
    14. 

  14. #define bzero(x,y) memset(x,0,y)
    15. 

  15. #endif
    16. 

  16. 

  17. #define GOOM_NB_RAND 0x10000
    18. 

  18. 

  19. typedef struct _GOOM_RANDOM {
    20. 

  20. 	int array[GOOM_NB_RAND];
    21. 

  21. 	unsigned short pos;
    22. 

  22. } GoomRandom;
    23. 

  23. 

  24. GoomRandom *goom_random_init(int i);
    25. 

  25. void goom_random_free(GoomRandom *grandom);
    26. 

  26. 

  27. inline static int goom_random(GoomRandom *grandom) {
    28. 

  28. 	
    29. 

  29. 	grandom->pos++; /* works because pos is an unsigned short */
    30. 

  30. 	return grandom->array[grandom->pos];
    31. 

  31. }
    32. 

  32. 

  33. inline static int goom_irand(GoomRandom *grandom, int i) {
    34. 

  34. 

  35. 	grandom->pos++;
    36. 

  36. 	return grandom->array[grandom->pos] % i;
    37. 

  37. }
    38. 

  38. 

  39. /* called to change the specified number of value in the array, so that the array does not remain the same*/
    40. 

  40. void goom_random_update_array(GoomRandom *grandom, int numberOfValuesToChange);
    41. 

  41. 

  42. #endif
    43.