diff options
| author | Jacques Lucke <jacques@blender.org> | 2020-11-25 14:24:32 +0300 |
|---|---|---|
| committer | Jacques Lucke <jacques@blender.org> | 2020-11-25 14:24:44 +0300 |
| commit | 1c86d32fa7d4c367370d06b7983410f4c33d58a2 (patch) | |
| tree | cdf9c9eb7de3b3e03da649f0be07026670837fa0 /source/blender/blenlib | |
| parent | 9e77fc533c1387776900fcc91ed9591f33dd8bf2 (diff) | |
Nodes: deduplicate ping pong math operation
The formula did not change. The only side effect of this change should be
that the compositor node now does not divide by zero in some cases.
Diffstat (limited to 'source/blender/blenlib')
| -rw-r--r-- | source/blender/blenlib/intern/math_base_inline.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_base_inline.c b/source/blender/blenlib/intern/math_base_inline.c index 8cc5c31a4c7..1dc7c21f1d4 100644 --- a/source/blender/blenlib/intern/math_base_inline.c +++ b/source/blender/blenlib/intern/math_base_inline.c @@ -387,6 +387,14 @@ MINLINE float wrapf(float value, float max, float min) return (range != 0.0f) ? value - (range * floorf((value - min) / range)) : min; } +MINLINE float pingpongf(float value, float scale) +{ + if (scale == 0.0f) { + return 0.0f; + } + return fabsf(fractf((value - scale) / (scale * 2.0f)) * scale * 2.0f - scale); +} + // Square. MINLINE int square_s(short a) |