diff options
author | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2010-01-22 14:10:24 +0300 |
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committer | Brecht Van Lommel <brechtvanlommel@pandora.be> | 2010-01-22 14:10:24 +0300 |
commit | 8ec59c7c687b9e50c48a9d455b31ff4c01df69d2 (patch) | |
tree | 32bf65aad65475c5dd9aeefa9067eba21e7324fb /source/blender/blenlib/intern/math_base.c | |
parent | 2d2339a70992b819a23e8c71f68027022b395f46 (diff) |
Math Lib:
* inline some more functions, from math_base and math_vector
* also made some changes to the way inline is done so it can
work for more than one file
* reflect_v3_v3v3 requires input vectors to be normalized now.
* added rgb_to_grayscale
* added zero_v4, copy_v4_v4, swap_v4_v4, is_one_v3
* added box_clip_bounds_m4 to clip a bounding box against a
projection matrix
Diffstat (limited to 'source/blender/blenlib/intern/math_base.c')
-rw-r--r-- | source/blender/blenlib/intern/math_base.c | 79 |
1 files changed, 1 insertions, 78 deletions
diff --git a/source/blender/blenlib/intern/math_base.c b/source/blender/blenlib/intern/math_base.c index 3b63b033342..06a339aee8c 100644 --- a/source/blender/blenlib/intern/math_base.c +++ b/source/blender/blenlib/intern/math_base.c @@ -32,84 +32,6 @@ #include "BLI_math.h" -/* A few small defines. Keep'em local! */ -#define SMALL_NUMBER 1.e-8 - -float sqrt3f(float f) -{ - if(f==0.0) return 0; - if(f<0) return (float)(-exp(log(-f)/3)); - else return (float)(exp(log(f)/3)); -} - -double sqrt3d(double d) -{ - if(d==0.0) return 0; - if(d<0) return -exp(log(-d)/3); - else return exp(log(d)/3); -} - -float saacos(float fac) -{ - if(fac<= -1.0f) return (float)M_PI; - else if(fac>=1.0f) return 0.0; - else return (float)acos(fac); -} - -float saasin(float fac) -{ - if(fac<= -1.0f) return (float)-M_PI/2.0f; - else if(fac>=1.0f) return (float)M_PI/2.0f; - else return (float)asin(fac); -} - -float sasqrt(float fac) -{ - if(fac<=0.0) return 0.0; - return (float)sqrt(fac); -} - -float saacosf(float fac) -{ - if(fac<= -1.0f) return (float)M_PI; - else if(fac>=1.0f) return 0.0f; - else return (float)acosf(fac); -} - -float saasinf(float fac) -{ - if(fac<= -1.0f) return (float)-M_PI/2.0f; - else if(fac>=1.0f) return (float)M_PI/2.0f; - else return (float)asinf(fac); -} - -float sasqrtf(float fac) -{ - if(fac<=0.0) return 0.0; - return (float)sqrtf(fac); -} - -float interpf(float target, float origin, float fac) -{ - return (fac*target) + (1.0f-fac)*origin; -} - -/* useful to calculate an even width shell, by taking the angle between 2 planes. - * The return value is a scale on the offset. - * no angle between planes is 1.0, as the angle between the 2 planes approches 180d - * the distance gets very high, 180d would be inf, but this case isn't valid */ -float shell_angle_to_dist(const float angle) -{ - return (angle < SMALL_NUMBER) ? 1.0f : fabsf(1.0f / cosf(angle)); -} - -/* used for zoom values*/ -float power_of_2(float val) -{ - return (float)pow(2, ceil(log(val) / log(2))); -} - - /* WARNING: MSVC compiling hack for double_round() */ #if (WIN32 || WIN64) && !(FREE_WINDOWS) @@ -169,3 +91,4 @@ double double_round(double x, int ndigits) { /* if computation resulted in overflow, raise OverflowError */ return z; } + |