diff options
Diffstat (limited to 'indra/llmath/llmath.h')
| -rw-r--r-- | indra/llmath/llmath.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/indra/llmath/llmath.h b/indra/llmath/llmath.h index 5e987f3193..12fc116714 100644 --- a/indra/llmath/llmath.h +++ b/indra/llmath/llmath.h @@ -86,6 +86,8 @@ const F32 GRAVITY = -9.8f; const F32 F_PI = 3.1415926535897932384626433832795f; const F32 F_TWO_PI = 6.283185307179586476925286766559f; const F32 F_PI_BY_TWO = 1.5707963267948966192313216916398f; +const F32 F_SQRT_TWO_PI = 2.506628274631000502415765284811f; +const F32 F_E = 2.71828182845904523536f; const F32 F_SQRT2 = 1.4142135623730950488016887242097f; const F32 F_SQRT3 = 1.73205080756888288657986402541f; const F32 OO_SQRT2 = 0.7071067811865475244008443621049f; @@ -548,4 +550,10 @@ inline U32 get_next_power_two(U32 val, U32 max_power_two) return val; } +//get the gaussian value given the linear distance from axis x and guassian value o +inline F32 llgaussian(F32 x, F32 o) +{ + return 1.f/(F_SQRT_TWO_PI*o)*powf(F_E, -(x*x)/(2*o*o)); +} + #endif |