diff options
Diffstat (limited to 'src/core/ao_quaternion.h')
| -rw-r--r-- | src/core/ao_quaternion.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/core/ao_quaternion.h b/src/core/ao_quaternion.h index 6c885500..044f1607 100644 --- a/src/core/ao_quaternion.h +++ b/src/core/ao_quaternion.h @@ -109,6 +109,15 @@ static inline void ao_quaternion_normalize(struct ao_quaternion *r, *r = *a; } +static inline float ao_quaternion_dot(const struct ao_quaternion *a, + const struct ao_quaternion *b) +{ +#define T(_a) (((a)->_a) * ((b)->_a)) + return T(r) + T(x) + T(y) + T(z); +#undef T +} + + static inline void ao_quaternion_rotate(struct ao_quaternion *r, const struct ao_quaternion *a, const struct ao_quaternion *b) |