1 files changed, 60 insertions, 0 deletions
diff --git a/thirdparty/openmesh/helpers.h b/thirdparty/openmesh/helpers.h
new file mode 100644
index 0000000..0e29261
--- /dev/null
+++ b/thirdparty/openmesh/helpers.h
@@ -0,0 +1,60 @@
+#pragma once
+#include <OpenMesh/Core/Mesh/BaseKernel.hh>
+#include <OpenMesh/Core/Mesh/PolyConnectivity.hh>
+#include <ranges>
+
+namespace OpenMesh {
+	template<typename Iter, typename... IterParams>
+	using IteratorFunction = Iter (OpenMesh::PolyConnectivity::*)(IterParams...) const;
+
+#if OM_GET_VER < 8
+	template<typename Iter, typename CenterEntityHandle, IteratorFunction<Iter, CenterEntityHandle> BeginFunc,
+			IteratorFunction<Iter, CenterEntityHandle> EndFunc, typename Adaptor>
+	auto
+	operator|(const OpenMesh::PolyConnectivity::CirculatorRange<OpenMesh::PolyConnectivity, Iter, CenterEntityHandle,
+					  BeginFunc, EndFunc> & range,
+			Adaptor && adaptor)
+	{
+		return std::views::iota(range.begin(), range.end()) | std::forward<Adaptor>(adaptor);
+	}
+
+	template<typename Iter, IteratorFunction<Iter> BeginFunc, IteratorFunction<Iter> EndFunc, typename Adaptor>
+	auto
+	operator|(
+			const OpenMesh::PolyConnectivity::EntityRange<const OpenMesh::PolyConnectivity, Iter, BeginFunc, EndFunc> &
+					range,
+			Adaptor && adaptor)
+	{
+		return std::views::iota(range.begin(), range.end()) | std::forward<Adaptor>(adaptor);
+	}
+#else
+	template<typename Iter, typename CenterEntityHandle, typename ToEntityHandle,
+			IteratorFunction<Iter, CenterEntityHandle> BeginFunc, IteratorFunction<Iter, CenterEntityHandle> EndFunc,
+			typename Adaptor>
+	auto
+	operator|(const CirculatorRange<CirculatorRangeTraitT<OpenMesh::PolyConnectivity, Iter, CenterEntityHandle,
+					  ToEntityHandle, BeginFunc, EndFunc>> & range,
+			Adaptor && adaptor)
+	{
+		return std::views::iota(range.begin(), range.end()) | std::forward<Adaptor>(adaptor);
+	}
+
+	template<typename Iter, IteratorFunction<Iter> BeginFunc, IteratorFunction<Iter> EndFunc, typename Adaptor>
+	auto
+	operator|(const EntityRange<RangeTraitT<const OpenMesh::PolyConnectivity, Iter, BeginFunc, EndFunc>> & range,
+			Adaptor && adaptor)
+	{
+		return std::views::iota(range.begin(), range.end()) | std::forward<Adaptor>(adaptor);
+	}
+
+#endif
+
+	namespace Helpers {
+		template<typename Type, template<typename> typename PropertyT> struct Property : public PropertyT<Type> {
+			template<typename... Params> explicit Property(OpenMesh::BaseKernel * kernel, Params &&... params)
+			{
+				kernel->add_property(*this, std::forward<Params>(params)...);
+			}
+		};
+	}
+}