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| author | rubenwardy <rw@rubenwardy.com> | 2017-12-22 10:00:57 +0000 |
|---|---|---|
| committer | paramat <mat.gregory@virginmedia.com> | 2017-12-26 21:55:08 +0000 |
| commit | 026ad912af0ad147071da79201a335ec84bd6ce9 (patch) | |
| tree | 430b97ea4eec13f9a3bc565e231bd38572fd7ebb /src/util/numeric.h | |
| parent | 0bcc2f33ebe382a1dafbe6edaf00f476f2584b74 (diff) | |
| download | minetest-026ad912af0ad147071da79201a335ec84bd6ce9.tar.gz minetest-026ad912af0ad147071da79201a335ec84bd6ce9.tar.bz2 minetest-026ad912af0ad147071da79201a335ec84bd6ce9.zip | |
Fix rounding error in g/set_node caused by truncation to float
Diffstat (limited to 'src/util/numeric.h')
| -rw-r--r-- | src/util/numeric.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/util/numeric.h b/src/util/numeric.h index be3e49c56..ff4d89ec4 100644 --- a/src/util/numeric.h +++ b/src/util/numeric.h @@ -255,6 +255,17 @@ inline v3s16 floatToInt(v3f p, f32 d) } /* + Returns integer position of node in given double precision position + */ +inline v3s16 doubleToInt(v3d p, double d) +{ + return v3s16( + (p.X + (p.X > 0 ? d / 2 : -d / 2)) / d, + (p.Y + (p.Y > 0 ? d / 2 : -d / 2)) / d, + (p.Z + (p.Z > 0 ? d / 2 : -d / 2)) / d); +} + +/* Returns floating point position of node in given integer position */ inline v3f intToFloat(v3s16 p, f32 d) |