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| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2026-01-15 00:52:57 +0000 |
|---|---|---|
| committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2026-01-15 00:52:57 +0000 |
| commit | f3536344c274073fcdbeb5501261e122830a869c (patch) | |
| tree | ce8da8f2cab4d7c0b40aa3a3708d8487da613e7f /lib/maths.h | |
| parent | Bump glad to v2.0.8 (diff) | |
| download | ilt-f3536344c274073fcdbeb5501261e122830a869c.tar.bz2 ilt-f3536344c274073fcdbeb5501261e122830a869c.tar.xz ilt-f3536344c274073fcdbeb5501261e122830a869c.zip | |
Add constexpr lround for glm::vec
Diffstat (limited to 'lib/maths.h')
| -rw-r--r-- | lib/maths.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/maths.h b/lib/maths.h index 43d6dcd..4a835d3 100644 --- a/lib/maths.h +++ b/lib/maths.h @@ -76,6 +76,18 @@ constexpr auto degreesToRads = pi / 180.F; constexpr auto earthMeanRadius = 6371.01F; // In km constexpr auto astronomicalUnit = 149597890.F; // In km +// GLM round is not constexpr :( And we can use lround to convert at the same time +template<glm::length_t D, std::floating_point T, glm::qualifier Q> +[[nodiscard]] constexpr glm::vec<D, long, Q> +lround(const glm::vec<D, T, Q> & value) +{ + glm::vec<D, long, Q> out {}; + for (glm::length_t axis = 0; axis < D; ++axis) { + out[axis] = std::lround(value[axis]); + } + return out; +} + template<glm::length_t D> constexpr GlobalPosition<D> operator+(const GlobalPosition<D> & global, const RelativePosition<D> & relative) |