vtkOTDensityMap.h

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

  Program:   Visualization Toolkit
  Module:    vtkOTDensityMap.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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.

=========================================================================*/
#ifndef vtkOTDensityMap_h
#define vtkOTDensityMap_h

#include "vtkContourValues.h"          // For Contour Values
#include "vtkFiltersOpenTurnsModule.h" // For export macro
#include "vtkMultiBlockDataSetAlgorithm.h"
#include "vtkSmartPointer.h" // For Smart Pointer

#include <map> // For map

class vtkIdList;
class vtkInformationDoubleKey;
class vtkPolyData;
class vtkTable;

class VTKFILTERSOPENTURNS_EXPORT vtkOTDensityMap : public vtkMultiBlockDataSetAlgorithm
{
public:
  static vtkOTDensityMap* New();
  vtkTypeMacro(vtkOTDensityMap, vtkMultiBlockDataSetAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  virtual vtkMTimeType GetMTime() override;


  void SetValue(int i, double value);

  double GetValue(int i);

  double* GetValues();

  void GetValues(double* contourValues);

  void SetNumberOfContours(int number);

  int GetNumberOfContours();


  void SetGridSubdivisions(int gridSubdivisions);
  vtkGetMacro(GridSubdivisions, int);


  vtkGetMacro(ContourApproximationNumberOfPoints, int);
  virtual void SetContourApproximationNumberOfPoints(int val);

  int FillInputPortInformation(int port, vtkInformation* info) override;
  int FillOutputPortInformation(int port, vtkInformation* info) override;
  int RequestData(vtkInformation* request,
    vtkInformationVector** inputVector,
    vtkInformationVector* outputVector) override;

  static vtkInformationDoubleKey* DENSITY();

protected:
  vtkOTDensityMap();
  ~vtkOTDensityMap();

  virtual vtkIdType FindNextCellId(vtkPolyData* pd,
    vtkIdType cellId,
    vtkIdType previousCellId,
    bool& invertedPoints,
    bool up = true,
    vtkIdList* currentPointIndices = nullptr);

  void ClearCache();
  void BuildContours(vtkPolyData* contourPd,
    int numContours,
    const double* contourValues,
    const double* densityPDFContourValues,
    const char* xArrayName,
    const char* yArrayName,
    std::multimap<double, vtkSmartPointer<vtkTable> >& contoursMap);

  // Cache
  class OTDensityCache;
  class OTDistributionCache;
  OTDensityCache* DensityPDFCache;
  OTDensityCache* DensityLogPDFSampleCache;
  OTDistributionCache* DistributionCache;

  vtkTimeStamp BuildTime;                // Keep track of last build time
  vtkTimeStamp DensityLogPDFSampleMTime; // Keep track of DensityLogPDFSample Parameters mtime
  vtkTimeStamp DensityPDFMTime;          // Keep track of DensityPDF Parameters modification time

  vtkContourValues* ContourValues;
  int GridSubdivisions;
  int ContourApproximationNumberOfPoints;

private:
  void operator=(const vtkOTDensityMap&) = delete;
  vtkOTDensityMap(const vtkOTDensityMap&) = delete;
};
#endif