gridcreators/common.hh

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#pragma once
 
#include <type_traits>
 
namespace Dune::Vtk
{
  template <class Factory, class... Args>
  using HasInsertVertex = decltype( std::declval<Factory>().insertVertex(std::declval<Args>()...) );
 
  namespace Impl
  {
    template <class GF, class = void>
    struct VertexIdType { using type = unsigned int; };
 
    template <class GF>
    struct VertexIdType<GF, typename GF::VertexId> { using type = typename GF::VertexId; };
  }
 
  template <class GF>
  using VertexId_t = typename Impl::VertexIdType<GF>::type;
 
} // end namespace Dune::Vtk