From 96d9a3e192236ca81955300a9ea6c963a47af052 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sun, 10 Jul 2022 11:13:37 +0300
Subject: [PATCH] Add geom::intersection(segment,cylinder)

---
 libs/geom/include/psemek/geom/intersection.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/libs/geom/include/psemek/geom/intersection.hpp b/libs/geom/include/psemek/geom/intersection.hpp
index 72a85e00..916a8da7 100644
--- a/libs/geom/include/psemek/geom/intersection.hpp
+++ b/libs/geom/include/psemek/geom/intersection.hpp
@@ -288,4 +288,16 @@ namespace psemek::geom
 		return !intersection(r, c).empty();
 	}
 
+	template <typename T, std::size_t N>
+	interval<T> intersection(segment<point<T, N>> const & s, cylinder<T, N> const & c)
+	{
+		return intersection(ray{s[0], s[1] - s[0]}, c) & interval<T>{T{0}, T{1}};
+	}
+
+	template <typename T, std::size_t N>
+	bool intersect(segment<point<T, N>> const & s, cylinder<T, N> const & c)
+	{
+		return !intersection(s, c).empty();
+	}
+
 }