.. _program_listing_file_MRMLDM_vtkMRMLLayerDMPipelineCreateHelper.h:

Program Listing for File vtkMRMLLayerDMPipelineCreateHelper.h
=============================================================

|exhale_lsh| :ref:`Return to documentation for file <file_MRMLDM_vtkMRMLLayerDMPipelineCreateHelper.h>` (``MRMLDM/vtkMRMLLayerDMPipelineCreateHelper.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #pragma once
   
   // Layer DM includes
   #include "vtkMRMLLayerDMPipelineI.h"
   
   // VTK includes
   #include <vtkSmartPointer.h>
   
   namespace layer_dm
   {
   template <typename TExpView, typename TExpNode, typename TPipeline, typename... Rest>
   vtkSmartPointer<vtkMRMLLayerDMPipelineI> TryCreateForView(vtkMRMLAbstractViewNode* viewNode, vtkMRMLNode* node)
   {
     if (TExpView::SafeDownCast(viewNode) && TExpNode::SafeDownCast(node))
     {
       auto pipeline = vtkSmartPointer<TPipeline>::New();
       pipeline->SetViewNode(viewNode);
       pipeline->SetDisplayNode(node);
       return pipeline;
     }
     if constexpr (sizeof...(Rest) > 0)
     {
       return TryCreateForView<TExpView, Rest...>(viewNode, node);
     }
     return nullptr;
   }
   
   template <typename TExpView, typename TExpNode, typename TPipeline, typename... Rest>
   vtkSmartPointer<vtkMRMLLayerDMPipelineI> TryCreate(vtkMRMLAbstractViewNode* viewNode, vtkMRMLNode* node)
   {
     if (auto pipeline = TryCreateForView<TExpView, TExpNode, TPipeline>(viewNode, node))
     {
       return pipeline;
     }
     if constexpr (sizeof...(Rest) > 0)
     {
       return TryCreate<Rest...>(viewNode, node);
     }
     return nullptr;
   }
   }; // namespace layer_dm