transform.h

   1
   2 #ifndef TRANSFORM_H
   3 #define TRANSFORM_H
   4
   5 extern vec_t softwaretransform_rotatematrix[3][4];
   6 extern vec_t softwaretransform_matrix[3][4];
   7 extern vec_t softwaretransform_invmatrix[3][4];
   8 extern int softwaretransform_complexity;
   9
  10 void softwaretransformidentity (void);
  11 void softwaretransformset (vec3_t origin, vec3_t angles, vec_t scale);
  12 void softwaretransformforentity (entity_render_t *r);
  13
  14 // #defines for speed reasons
  15 #define softwaretransform(in, out)\
  16 {\
  17         if (softwaretransform_complexity == 0)\
  18         {\
  19                 VectorCopy(in, out);\
  20         }\
  21         else if (softwaretransform_complexity == 1)\
  22         {\
  23                 out[0] = in[0] + softwaretransform_matrix[0][3];\
  24                 out[1] = in[1] + softwaretransform_matrix[1][3];\
  25                 out[2] = in[2] + softwaretransform_matrix[2][3];\
  26         }\
  27         else\
  28         {\
  29                 out[0] = DotProduct(in, softwaretransform_matrix[0]) + softwaretransform_matrix[0][3];\
  30                 out[1] = DotProduct(in, softwaretransform_matrix[1]) + softwaretransform_matrix[1][3];\
  31                 out[2] = DotProduct(in, softwaretransform_matrix[2]) + softwaretransform_matrix[2][3];\
  32         }\
  33 }
  34
  35 #define softwaretransformdirection(in, out)\
  36 {\
  37         if (softwaretransform_complexity == 2)\
  38         {\
  39                 out[0] = DotProduct(in, softwaretransform_rotatematrix[0]);\
  40                 out[1] = DotProduct(in, softwaretransform_rotatematrix[1]);\
  41                 out[2] = DotProduct(in, softwaretransform_rotatematrix[2]);\
  42         }\
  43         else\
  44                 VectorCopy(in, out);\
  45 }
  46
  47 #define softwareuntransform(in, out)\
  48 {\
  49         if (softwaretransform_complexity == 0)\
  50         {\
  51                 VectorCopy(in, out);\
  52         }\
  53         else if (softwaretransform_complexity == 1)\
  54         {\
  55                 out[0] = in[0] - softwaretransform_invmatrix[0][3];\
  56                 out[1] = in[1] - softwaretransform_invmatrix[1][3];\
  57                 out[2] = in[2] - softwaretransform_invmatrix[2][3];\
  58         }\
  59         else\
  60         {\
  61                 vec3_t soft_v;\
  62                 soft_v[0] = in[0] - softwaretransform_invmatrix[0][3];\
  63                 soft_v[1] = in[1] - softwaretransform_invmatrix[1][3];\
  64                 soft_v[2] = in[2] - softwaretransform_invmatrix[2][3];\
  65                 out[0] = DotProduct(soft_v, softwaretransform_invmatrix[0]);\
  66                 out[1] = DotProduct(soft_v, softwaretransform_invmatrix[1]);\
  67                 out[2] = DotProduct(soft_v, softwaretransform_invmatrix[2]);\
  68         }\
  69 }
  70
  71 #endif
  72