/*=========================================================================

  Program:   ParaView
  Module:    vtkPVGeometryFilter.h

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
/**
 * @class   vtkPVGeometryFilter
 * @brief   Geometry filter that does outlines for volumes.
 *
 * This filter defaults to using the outline filter unless the input
 * is a structured volume.
*/

#ifndef vtkPVGeometryFilter_h
#define vtkPVGeometryFilter_h

#include "vtkDataObjectAlgorithm.h"
#include "vtkPVVTKExtensionsRenderingModule.h" // needed for export macro
class vtkCallbackCommand;
class vtkDataSet;
class vtkDataSetSurfaceFilter;
class vtkGenericDataSet;
class vtkGenericGeometryFilter;
class vtkHyperTreeGrid;
class vtkImageData;
class vtkUniformGrid;
class vtkInformationIntegerVectorKey;
class vtkInformationVector;
class vtkMultiProcessController;
class vtkOutlineSource;
class vtkPolyData;
class vtkPVRecoverGeometryWireframe;
class vtkRectilinearGrid;
class vtkStructuredGrid;
class vtkUnstructuredGridBase;
class vtkUnstructuredGridGeometryFilter;
class vtkAMRBox;
class vtkOverlappingAMR;

class VTKPVVTKEXTENSIONSRENDERING_EXPORT vtkPVGeometryFilter : public vtkDataObjectAlgorithm
{
public:
  static vtkPVGeometryFilter* New();
  vtkTypeMacro(vtkPVGeometryFilter, vtkDataObjectAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;

  //@{
  /**
   * This flag is set during the execute method.  It indicates
   * that the input was 3d and an outline representation was used.
   */
  vtkGetMacro(OutlineFlag, int);
  //@}

  //@{
  /**
   * Set/get whether to produce outline (vs. surface).
   */
  vtkSetMacro(UseOutline, int);
  vtkGetMacro(UseOutline, int);
  //@}

  //@{
  /**
   * Determines the number of distinct values in vtkBlockColors
   */
  vtkSetMacro(BlockColorsDistinctValues, int);
  vtkGetMacro(BlockColorsDistinctValues, int);
  //@}

  //@{
  /**
   * When input is structured data, this flag will generate faces with
   * triangle strips.  This should render faster and use less memory, but no
   * cell data is copied.  By default, UseStrips is Off.
   */
  void SetUseStrips(int);
  vtkGetMacro(UseStrips, int);
  vtkBooleanMacro(UseStrips, int);
  //@}

  // Description:
  // Makes set use strips call modified after it changes the setting.
  void SetForceUseStrips(int);
  vtkGetMacro(ForceUseStrips, int);
  vtkBooleanMacro(ForceUseStrips, int);

  //@{
  /**
   * Whether to generate cell normals.  They can only be used
   * for poly cells now.  This option does nothing if the output
   * contains lines, verts, or strips.
   */
  vtkSetMacro(GenerateCellNormals, int);
  vtkGetMacro(GenerateCellNormals, int);
  vtkBooleanMacro(GenerateCellNormals, int);
  //@}

  //@{
  /**
   * Whether to triangulate mesh for rendering. This parameter avoid
   * rendering issues of non-convex polygons.
   * This option has no effect when using OpenGL2 rendering backend. OpenGL2
   * rendering always triangulates polygonal meshes.
   */
  virtual void SetTriangulate(int val);
  vtkGetMacro(Triangulate, int);
  vtkBooleanMacro(Triangulate, int);
  //@}

  //@{
  /**
   * Nonlinear faces are approximated with flat polygons.  This parameter
   * controls how many times to subdivide nonlinear surface cells.  Higher
   * subdivisions generate closer approximations but take more memory and
   * rendering time.  Subdivision is recursive, so the number of output polygons
   * can grow exponentially with this parameter.
   */
  virtual void SetNonlinearSubdivisionLevel(int);
  vtkGetMacro(NonlinearSubdivisionLevel, int);
  //@}

  //@{
  /**
   * Set and get the controller.
   */
  virtual void SetController(vtkMultiProcessController*);
  vtkGetObjectMacro(Controller, vtkMultiProcessController);
  //@}

  //@{
  /**
   * If on, the output polygonal dataset will have a celldata array that
   * holds the cell index of the original 3D cell that produced each output
   * cell. This is useful for picking but it takes memory. The default is on.
   */
  void SetPassThroughCellIds(int);
  vtkGetMacro(PassThroughCellIds, int);
  vtkBooleanMacro(PassThroughCellIds, int);
  //@}

  //@{
  /**
   * If on, the output polygonal dataset will have a pointdata array that
   * holds the point index of the original vertex that produced each output
   * vertex. This is useful for picking but it takes memory. The default is on.
   */
  void SetPassThroughPointIds(int);
  vtkGetMacro(PassThroughPointIds, int);
  vtkBooleanMacro(PassThroughPointIds, int);
  //@}

  //@{
  /**
   * If on, point arrays named vtkProcessId is added.
   */
  vtkSetMacro(GenerateProcessIds, bool);
  vtkGetMacro(GenerateProcessIds, bool);
  vtkBooleanMacro(GenerateProcessIds, bool);
  //@}

  //@{
  /**
   * This property affects the way AMR outlines and faces are generated.
   * When set to true (default), internal data-set faces/outlines for datasets within
   * the AMR grids are hidden. Set it to false to see boxes for all the datasets
   * in the AMR, internal or otherwise.
   */
  vtkSetMacro(HideInternalAMRFaces, bool);
  vtkGetMacro(HideInternalAMRFaces, bool);
  vtkBooleanMacro(HideInternalAMRFaces, bool);
  //@}

  //@{
  /**
   * For overlapping AMR, this property controls affects the way AMR
   * outlines are generated. When set to true (default), it uses the
   * overlapping AMR meta-data to identify the blocks present in the AMR.
   * Which implies that even if the input did not fill in the uniform grids for
   * all datasets in the AMR, this filter can generate outlines using the
   * metadata alone. When set to false, the filter will only generate outlines
   * for datasets that are actually present. Note, this only affects overlapping
   * AMR.
   */
  vtkSetMacro(UseNonOverlappingAMRMetaDataForOutlines, bool);
  vtkGetMacro(UseNonOverlappingAMRMetaDataForOutlines, bool);
  vtkBooleanMacro(UseNonOverlappingAMRMetaDataForOutlines, bool);
  //@}

  // These keys are put in the output composite-data metadata for multipieces
  // since this filter merges multipieces together.
  static vtkInformationIntegerVectorKey* POINT_OFFSETS();
  static vtkInformationIntegerVectorKey* VERTS_OFFSETS();
  static vtkInformationIntegerVectorKey* LINES_OFFSETS();
  static vtkInformationIntegerVectorKey* POLYS_OFFSETS();
  static vtkInformationIntegerVectorKey* STRIPS_OFFSETS();

protected:
  vtkPVGeometryFilter();
  ~vtkPVGeometryFilter() override;

  //@{
  /**
   * Overridden to create vtkMultiBlockDataSet when input is a
   * composite-dataset and vtkPolyData when input is a vtkDataSet.
   */
  int RequestDataObject(
    vtkInformation*, vtkInformationVector**, vtkInformationVector*) VTK_OVERRIDE;
  virtual int RequestAMRData(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector);
  virtual int RequestCompositeData(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector);
  int RequestData(vtkInformation* request, vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) VTK_OVERRIDE;
  //@}

  // Create a default executive.
  vtkExecutive* CreateDefaultExecutive() VTK_OVERRIDE;

  /**
   * Produce geometry for a block in the dataset.
   * This does not handle producing outlines. Call only when this->UseOutline ==
   * 0; \c extractface mask it is used to determine external faces.
   */
  void ExecuteAMRBlock(vtkUniformGrid* input, vtkPolyData* output, const bool extractface[6]);

  /**
   * Used instead of ExecuteAMRBlock() when this->UseOutline is true.
   */
  void ExecuteAMRBlockOutline(
    const double bounds[6], vtkPolyData* output, const bool extractface[6]);

  void ExecuteBlock(vtkDataObject* input, vtkPolyData* output, int doCommunicate, int updatePiece,
    int updateNumPieces, int updateGhosts, const int* wholeExtent);

  void DataSetExecute(vtkDataSet* input, vtkPolyData* output, int doCommunicate);
  void GenericDataSetExecute(vtkGenericDataSet* input, vtkPolyData* output, int doCommunicate);

  void ImageDataExecute(
    vtkImageData* input, vtkPolyData* output, int doCommunicate, int updatePiece, const int* ext);

  void StructuredGridExecute(vtkStructuredGrid* input, vtkPolyData* output, int updatePiece,
    int updateNumPieces, int updateGhosts, const int* wholeExtent);

  void RectilinearGridExecute(vtkRectilinearGrid* input, vtkPolyData* output, int updatePiece,
    int updateNumPieces, int updateGhosts, const int* wholeExtent);

  void UnstructuredGridExecute(
    vtkUnstructuredGridBase* input, vtkPolyData* output, int doCommunicate);

  void PolyDataExecute(vtkPolyData* input, vtkPolyData* output, int doCommunicate);

  void HyperTreeGridExecute(vtkHyperTreeGrid* input, vtkPolyData* output, int doCommunicate);

  /**
   * Cleans up the output polydata. If doCommunicate is true the method is free
   * to communicate with other processes as needed.
   */
  void CleanupOutputData(vtkPolyData* output, int doCommunicate);

  void ExecuteCellNormals(vtkPolyData* output, int doCommunicate);

  void ChangeUseStripsInternal(int val, int force);

  int OutlineFlag;
  int UseOutline;
  int BlockColorsDistinctValues;
  int UseStrips;
  int GenerateCellNormals;
  int Triangulate;
  int NonlinearSubdivisionLevel;

  vtkMultiProcessController* Controller;
  vtkOutlineSource* OutlineSource;
  vtkDataSetSurfaceFilter* DataSetSurfaceFilter;
  vtkGenericGeometryFilter* GenericGeometryFilter;
  vtkUnstructuredGridGeometryFilter* UnstructuredGridGeometryFilter;
  vtkPVRecoverGeometryWireframe* RecoverWireframeFilter;

  /**
   * Call CheckAttributes on the \c input which ensures that all attribute
   * arrays have valid lengths.
   */
  int CheckAttributes(vtkDataObject* input);

  // Callback for recording progress of internal filters.
  void HandleGeometryFilterProgress(vtkObject* caller, unsigned long, void*);

  int FillInputPortInformation(int, vtkInformation*) VTK_OVERRIDE;

  void ReportReferences(vtkGarbageCollector*) VTK_OVERRIDE;

  /**
   * Overridden to request ghost-cells for vtkUnstructuredGrid inputs so that we
   * don't generate internal surfaces.
   */
  int RequestUpdateExtent(
    vtkInformation*, vtkInformationVector**, vtkInformationVector*) VTK_OVERRIDE;

  // Convenience method to purge ghost cells.
  void RemoveGhostCells(vtkPolyData*);

  bool GenerateProcessIds;
  int PassThroughCellIds;
  int PassThroughPointIds;
  int ForceUseStrips;
  vtkTimeStamp StripSettingMTime;
  int StripModFirstPass;
  bool HideInternalAMRFaces;
  bool UseNonOverlappingAMRMetaDataForOutlines;

private:
  vtkPVGeometryFilter(const vtkPVGeometryFilter&) = delete;
  void operator=(const vtkPVGeometryFilter&) = delete;

  void AddCompositeIndex(vtkPolyData* pd, unsigned int index);
  //@{
  /**
   * Adds a field array called "vtkBlockColors". The array is
   * added to each block only if the dataset is a composite
   * dataset. The array has one value set to
   * (blockIndex % BlockColorsDistinctValues)
   */
  void AddBlockColors(vtkPolyData* pd, unsigned int index);
  void AddHierarchicalIndex(vtkPolyData* pd, unsigned int level, unsigned int index);
  class BoundsReductionOperation;
  //@}
};

#endif
