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-rw-r--r--lib/maths.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/maths.h b/lib/maths.h
index 89cb7cb..c072283 100644
--- a/lib/maths.h
+++ b/lib/maths.h
@@ -23,6 +23,7 @@ constexpr const glm::vec3 south {0, 0, -1};
constexpr const glm::vec3 east {-1, 0, 0};
constexpr const glm::vec3 west {1, 0, 0};
constexpr auto half_pi {glm::half_pi<float>()};
+constexpr auto quarter_pi {half_pi / 2};
constexpr auto pi {glm::pi<float>()};
constexpr auto two_pi {glm::two_pi<float>()};