vtkMRMLLayerDMPipelineCreateHelper.h

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/*==============================================================================
 
  Program: 3D Slicer
 
  Copyright (c) Kitware SAS
 
  See COPYRIGHT.txt
  or http://www.slicer.org/copyright/copyright.txt for details.
 
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
 
  This file was originally developed by Thibault Pelletier, Kitware SAS,
  and was partially funded by ANR grants ANR-22-CE45-0034 and ANR-18-RHUS-005.
 
==============================================================================*/
 
#ifndef __vtkMRMLLayerDMPipelineCreateHelper_h
#define __vtkMRMLLayerDMPipelineCreateHelper_h
 
// Layer DM includes
#include "vtkMRMLLayerDMPipeline.h"
 
// VTK includes
#include <vtkSmartPointer.h>
 
namespace layer_dm
{
template <typename TExpView, typename TExpNode, typename TPipeline, typename... Rest>
vtkSmartPointer<vtkMRMLLayerDMPipeline> 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<vtkMRMLLayerDMPipeline> 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
 
#endif