ColorTools_GPU.h

   1 #ifndef COLOR_TOOL_GPU_H
   2 #define COLOR_TOOL_GPU_H
   3
   4 #include "both_define.h"
   5 #include "builtin_types.h" // pour float3
   6
   7
   8 // TODO cuda ameliorer
   9
  10 namespace gpu
  11     {
  12
  13     class ColorTools
  14         {
  15             /*--------------------------------------*\
  16            |*             HSB_TO_RVB            *|
  17              \*-------------------------------------*/
  18
  19             /*--------------------------------------*\
  20            |*           public                      *|
  21              \*-------------------------------------*/
  22
  23         public:
  24
  25             /**
  26              * Convertir une couleur HSB en RGB !
  27              * H,S,B in [0,1]
  28              * R,G,B in [0,255]
  29              */
  30             __BOTH__
  31             static void HSB_TO_RVB(const float3& hsb01, uchar4* ptrRVBA)
  32                 {
  33                 ColorTools::HSB_TO_RVB(hsb01.x, hsb01.y, hsb01.z, &ptrRVBA->x, &ptrRVBA->y, &ptrRVBA->z);
  34                 }
  35
  36             /**
  37              * Convertir une couleur HSB en RGB !
  38              * H,S,B in [0,1]
  39              * R,G,B in [0,255]
  40              */
  41             __BOTH__
  42             static void HSB_TO_RVB(float h01, uchar4* ptrRVBA)
  43                 {
  44                 ColorTools::HSB_TO_RVB(h01, 1.0f, 1.0f, &ptrRVBA->x, &ptrRVBA->y, &ptrRVBA->z);
  45                 }
  46
  47             /**
  48              * Convertir une couleur HSB en RGB !
  49              * H,S,B in [0,1]
  50              * R,G,B in [0,255]
  51              */
  52             __BOTH__
  53             static void HSB_TO_RVB(float h01, float s01, float b01, uchar4* ptrRVBA)
  54                 {
  55                 ColorTools::HSB_TO_RVB(h01, s01, b01, &ptrRVBA->x, &ptrRVBA->y, &ptrRVBA->z);
  56                 }
  57
  58             /**
  59              * Convertir une couleur HSB en RGB !
  60              * H,S,B in [0,1]
  61              * R,G,B in [0,255]
  62              */
  63             __BOTH__
  64             static void HSB_TO_RVB(float H, float S, float V, unsigned char *ptrR, unsigned char *ptrG, unsigned char *ptrB)
  65                 {
  66                 //float H = profondeur / 255.0;
  67                 //float S = 1;
  68                 //float V = 1;
  69                 if (S == 0) //HSV from 0 to 1
  70                     {
  71                     *ptrR = V * 255;
  72                     *ptrG = V * 255;
  73                     *ptrB = V * 255;
  74                     }
  75                 else
  76                     {
  77                     float var_h = H * 6;
  78                     if (var_h == 6)
  79                         {
  80                         var_h = 0;
  81                         } //H must be < 1
  82
  83                     unsigned char var_i = (unsigned char) var_h; //Or ... var_i = floor( var_h )
  84
  85                     float var_1 = V * (1 - S);
  86                     float var_2 = V * (1 - S * (var_h - var_i));
  87                     float var_3 = V * (1 - S * (1 - (var_h - var_i)));
  88
  89                     float var_r, var_g, var_b;
  90                     if (var_i == 0)
  91                         {
  92                         var_r = V;
  93                         var_g = var_3;
  94                         var_b = var_1;
  95                         }
  96                     else if (var_i == 1)
  97                         {
  98                         var_r = var_2;
  99                         var_g = V;
 100                         var_b = var_1;
 101                         }
 102                     else if (var_i == 2)
 103                         {
 104                         var_r = var_1;
 105                         var_g = V;
 106                         var_b = var_3;
 107                         }
 108                     else if (var_i == 3)
 109                         {
 110                         var_r = var_1;
 111                         var_g = var_2;
 112                         var_b = V;
 113                         }
 114                     else if (var_i == 4)
 115                         {
 116                         var_r = var_3;
 117                         var_g = var_1;
 118                         var_b = V;
 119                         }
 120                     else
 121                         {
 122                         var_r = V;
 123                         var_g = var_1;
 124                         var_b = var_2;
 125                         }
 126
 127                     //RGB results from 0 to 255
 128                     *ptrR = (unsigned char) (var_r * 255);
 129                     *ptrG = (unsigned char) (var_g * 255);
 130                     *ptrB = (unsigned char) (var_b * 255);
 131                     }
 132                 }
 133
 134             /*--------------------------------------*\
 135             |*          private                     *|
 136              \*-------------------------------------*/
 137
 138         };
 139     }
 140 #endif
 141
 142 /*----------------------------------------------------------------------*\
 143  |*                     End                                             *|
 144  \*---------------------------------------------------------------------*/