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Matrices and vectors, to make coding next commit more pleasant

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jacksonmj
2011-03-18 12:46:06 +00:00
parent 56f966b4db
commit d924a5554a
2 changed files with 88 additions and 0 deletions
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23
includes/misc.h
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@@ -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