diff --git a/libs/geom/include/psemek/geom/intersection.hpp b/libs/geom/include/psemek/geom/intersection.hpp
index e2567707..545bebe5 100644
--- a/libs/geom/include/psemek/geom/intersection.hpp
+++ b/libs/geom/include/psemek/geom/intersection.hpp
@@ -130,6 +130,30 @@ namespace psemek::geom
 		return !intersection(r, b).empty();
 	}
 
+	template <typename T, std::size_t N>
+	interval<T> intersection(segment<point<T, N>> const & s, box<T, N> const & b)
+	{
+		auto t = interval<T>{T(0), T(1)};
+
+		for (std::size_t i = 0; i < N; ++i)
+		{
+			T tmin = (b[i].min - s[0][i]) / (s[1][i] - s[0][i]);
+			T tmax = (b[i].max - s[0][i]) / (s[1][i] - s[0][i]);
+
+			if (tmin > tmax) std::swap(tmin, tmax);
+
+			t &= interval<T>{tmin, tmax};
+		}
+
+		return t;
+	}
+
+	template <typename T, std::size_t N>
+	bool intersect(segment<point<T, N>> const & s, box<T, N> const & b)
+	{
+		return !intersection(s, b).empty();
+	}
+
 	template <typename T, std::size_t N>
 	std::optional<T> intersection(ray<T, N> const & r, simplex<point<T, N>, N - 1> const & s)
 	{