diff options
Diffstat (limited to 'includes/misc.h')
| -rw-r--r-- | includes/misc.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/includes/misc.h b/includes/misc.h index 4094b39..a929f8c 100644 --- a/includes/misc.h +++ b/includes/misc.h @@ -71,4 +71,27 @@ void *file_load(char *fn, int *size); int cpu_check(void); +// a b +// c d +struct matrix2d {float a,b,c,d;}; +typedef struct matrix2d matrix2d; + +// column vector +struct vector2d {float x,y;}; +typedef struct vector2d vector2d; + +matrix2d m2d_multiply_m2d(matrix2d m1, matrix2d m2); +vector2d m2d_multiply_v2d(matrix2d m, vector2d v); +matrix2d m2d_multiply_float(matrix2d m, float s); +vector2d v2d_multiply_float(vector2d v, float s); + +vector2d v2d_add(vector2d v1, vector2d v2); +vector2d v2d_sub(vector2d v1, vector2d v2); + +matrix2d m2d_new(float me0, float me1, float me2, float me3); +vector2d v2d_new(float x, float y); + +extern vector2d v2d_zero; +extern matrix2d m2d_identity; + #endif |