vtkCompositeDataPipeline.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkCompositeDataPipeline_h
#define vtkCompositeDataPipeline_h

#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkWrappingHints.h" // For VTK_MARSHALAUTO
#include <vtkSmartPointer.h>  // smart pointer

#include <vector> // for vector in return type

VTK_ABI_NAMESPACE_BEGIN
class vtkCompositeDataSet;
class vtkCompositeDataIterator;
class vtkInformationDoubleKey;
class vtkInformationIntegerVectorKey;
class vtkInformationObjectBaseKey;
class vtkInformationStringKey;
class vtkInformationDataObjectKey;
class vtkInformationIntegerKey;

class VTKCOMMONEXECUTIONMODEL_EXPORT VTK_MARSHALAUTO vtkCompositeDataPipeline
  : public vtkStreamingDemandDrivenPipeline
{
public:
  static vtkCompositeDataPipeline* New();
  vtkTypeMacro(vtkCompositeDataPipeline, vtkStreamingDemandDrivenPipeline);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  vtkDataObject* GetCompositeOutputData(int port);

  vtkDataObject* GetCompositeInputData(int port, int index, vtkInformationVector** inInfoVec);

  static vtkInformationIntegerKey* LOAD_REQUESTED_BLOCKS();

  static vtkInformationObjectBaseKey* COMPOSITE_DATA_META_DATA();

  static vtkInformationIntegerVectorKey* UPDATE_COMPOSITE_INDICES();

  static vtkInformationDoubleKey* BLOCK_AMOUNT_OF_DETAIL();

protected:
  vtkCompositeDataPipeline();
  ~vtkCompositeDataPipeline() override;

  int ForwardUpstream(vtkInformation* request) override;
  virtual int ForwardUpstream(int i, int j, vtkInformation* request);

  // Copy information for the given request.
  void CopyDefaultInformation(vtkInformation* request, int direction,
    vtkInformationVector** inInfoVec, vtkInformationVector* outInfoVec) override;

  virtual void PushInformation(vtkInformation*);
  virtual void PopInformation(vtkInformation*);

  int ExecuteDataObject(
    vtkInformation* request, vtkInformationVector** inInfo, vtkInformationVector* outInfo) override;

  int ExecuteData(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;

  void ExecuteDataStart(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;

  // Override this check to account for update extent.
  int NeedToExecuteData(
    int outputPort, vtkInformationVector** inInfoVec, vtkInformationVector* outInfoVec) override;

  // Check whether the data object in the pipeline information exists
  // and has a valid type.
  virtual int CheckCompositeData(
    vtkInformation* request, vtkInformationVector** inInfoVec, vtkInformationVector* outInfoVec);

  // True when the pipeline is iterating over the current (simple) filter
  // to produce composite output. In this case, ExecuteDataStart() should
  // NOT Initialize() the composite output.
  int InLocalLoop;

  virtual void ExecuteSimpleAlgorithm(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec, int compositePort);

  virtual void ExecuteEach(vtkCompositeDataIterator* iter, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec, int compositePort, int connection, vtkInformation* request,
    std::vector<vtkSmartPointer<vtkCompositeDataSet>>& compositeOutput);

  std::vector<vtkDataObject*> ExecuteSimpleAlgorithmForBlock(vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec, vtkInformation* inInfo, vtkInformation* request,
    vtkDataObject* dobj);

  bool ShouldIterateOverInput(vtkInformationVector** inInfoVec, int& compositePort);

  int InputTypeIsValid(int port, int index, vtkInformationVector** inInfoVec) override;

  vtkInformation* InformationCache;

  vtkInformation* GenericRequest;
  vtkInformation* InformationRequest;

  void ResetPipelineInformation(int port, vtkInformation*) override;

  std::vector<vtkSmartPointer<vtkDataObject>> CreateOutputCompositeDataSet(
    vtkCompositeDataSet* input, int compositePort, int numOutputPorts);

  // Override this to handle UPDATE_COMPOSITE_INDICES().
  void MarkOutputsGenerated(vtkInformation* request, vtkInformationVector** inInfoVec,
    vtkInformationVector* outInfoVec) override;

  int NeedToExecuteBasedOnCompositeIndices(vtkInformation* outInfo);

  static vtkInformationIntegerKey* SUPPRESS_RESET_PI();

  static vtkInformationIntegerVectorKey* DATA_COMPOSITE_INDICES();

private:
  vtkCompositeDataPipeline(const vtkCompositeDataPipeline&) = delete;
  void operator=(const vtkCompositeDataPipeline&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif