diff --git a/libs/geom/include/psemek/geom/mesh.hpp b/libs/geom/include/psemek/geom/mesh.hpp
index ac904be9..bc5cbdd4 100644
--- a/libs/geom/include/psemek/geom/mesh.hpp
+++ b/libs/geom/include/psemek/geom/mesh.hpp
@@ -28,11 +28,11 @@ namespace psemek::geom
 	}
 
 	template <typename Index = std::uint32_t, typename T, std::size_t N>
-	std::vector<simplex<Index, 1>> edges(box<T, N> const &)
+	std::vector<segment<Index>> edges(box<T, N> const &)
 	{
 		static_assert(N > 0); // who knows?..
 
-		std::vector<simplex<Index, 1>> result;
+		std::vector<segment<Index>> result;
 
 		for (std::size_t i = 0; i < N; ++i)
 		{
@@ -51,4 +51,17 @@ namespace psemek::geom
 		return result;
 	}
 
+	template <typename Index = std::uint32_t, typename Vertex>
+	std::vector<triangle<Index>> triangulate_convex(std::vector<Vertex> const & v)
+	{
+		std::vector<triangle<Index>> result;
+
+		for (std::size_t i = 1; i + 1 < v.size(); ++i)
+		{
+			result.push_back({static_cast<Index>(0), static_cast<Index>(i), static_cast<Index>(i + 1)});
+		}
+
+		return result;
+	}
+
 }