vtkGenericEdgeTable.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkGenericEdgeTable.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 vtkGenericEdgeTable_h
#define vtkGenericEdgeTable_h
 
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
 
class vtkEdgeTableEdge;
class vtkEdgeTablePoints;
 
class VTKCOMMONDATAMODEL_EXPORT vtkGenericEdgeTable : public vtkObject
{
public:
  static vtkGenericEdgeTable* New();
 
 
  vtkTypeMacro(vtkGenericEdgeTable, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void InsertEdge(vtkIdType e1, vtkIdType e2, vtkIdType cellId, int ref, vtkIdType& ptId);
 
  void InsertEdge(vtkIdType e1, vtkIdType e2, vtkIdType cellId, int ref = 1);
 
  int RemoveEdge(vtkIdType e1, vtkIdType e2);
 
  int CheckEdge(vtkIdType e1, vtkIdType e2, vtkIdType& ptId);
 
  int IncrementEdgeReferenceCount(vtkIdType e1, vtkIdType e2, vtkIdType cellId);
 
  int CheckEdgeReferenceCount(vtkIdType e1, vtkIdType e2);
 
  void Initialize(vtkIdType start);
 
  int GetNumberOfComponents();
 
  void SetNumberOfComponents(int count);
 
  int CheckPoint(vtkIdType ptId);
 
  int CheckPoint(vtkIdType ptId, double point[3], double* scalar);
 
 
  void InsertPoint(vtkIdType ptId, double point[3]);
  // \pre: sizeof(s)==GetNumberOfComponents()
  void InsertPointAndScalar(vtkIdType ptId, double pt[3], double* s);
 
  void RemovePoint(vtkIdType ptId);
 
  void IncrementPointReferenceCount(vtkIdType ptId);
 
 
  void DumpTable();
  void LoadFactor();
 
  class PointEntry
  {
  public:
    vtkIdType PointId;
    double Coord[3];
    double* Scalar; // point data: all point-centered attributes at this point
    int numberOfComponents;
 
    int Reference; // signed char
 
    PointEntry(int size);
 
    ~PointEntry() { delete[] this->Scalar; }
 
    PointEntry(const PointEntry& other)
    {
      this->PointId = other.PointId;
 
      memcpy(this->Coord, other.Coord, sizeof(double) * 3);
 
      int c = other.numberOfComponents;
      this->numberOfComponents = c;
      this->Scalar = new double[c];
      memcpy(this->Scalar, other.Scalar, sizeof(double) * c);
      this->Reference = other.Reference;
    }
 
    PointEntry& operator=(const PointEntry& other)
    {
      if (this != &other)
      {
        this->PointId = other.PointId;
 
        memcpy(this->Coord, other.Coord, sizeof(double) * 3);
 
        int c = other.numberOfComponents;
 
        if (this->numberOfComponents != c)
        {
          delete[] this->Scalar;
          this->Scalar = new double[c];
          this->numberOfComponents = c;
        }
        memcpy(this->Scalar, other.Scalar, sizeof(double) * c);
        this->Reference = other.Reference;
      }
      return *this;
    }
  };
 
  class EdgeEntry
  {
  public:
    vtkIdType E1;
    vtkIdType E2;
 
    int Reference; // signed char
    int ToSplit;   // signed char
    vtkIdType PtId;
    vtkIdType CellId; // CellId the edge refer to at a step in tessellation
 
    EdgeEntry()
    {
      this->Reference = 0;
      this->CellId = -1;
    }
    ~EdgeEntry() = default;
 
    EdgeEntry(const EdgeEntry& copy)
    {
      this->E1 = copy.E1;
      this->E2 = copy.E2;
 
      this->Reference = copy.Reference;
      this->ToSplit = copy.ToSplit;
      this->PtId = copy.PtId;
      this->CellId = copy.CellId;
    }
 
    EdgeEntry& operator=(const EdgeEntry& entry)
    {
      if (this == &entry)
      {
        return *this;
      }
      this->E1 = entry.E1;
      this->E2 = entry.E2;
      this->Reference = entry.Reference;
      this->ToSplit = entry.ToSplit;
      this->PtId = entry.PtId;
      this->CellId = entry.CellId;
      return *this;
    }
  };
 
protected:
  vtkGenericEdgeTable();
  ~vtkGenericEdgeTable() override;
 
  void InsertEdge(
    vtkIdType e1, vtkIdType e2, vtkIdType cellId, int ref, int toSplit, vtkIdType& ptId);
 
  // Hash table that contiain entry based on edges:
  vtkEdgeTableEdge* EdgeTable;
 
  // At end of process we should be able to retrieve points coord based on pointid
  vtkEdgeTablePoints* HashPoints;
 
  // Main hash functions
  // For edge table:
  vtkIdType HashFunction(vtkIdType e1, vtkIdType e2);
 
  // For point table:
  vtkIdType HashFunction(vtkIdType ptId);
 
  // Keep track of the last point id we inserted, increment it each time:
  vtkIdType LastPointId;
 
  vtkIdType NumberOfComponents;
 
private:
  vtkGenericEdgeTable(const vtkGenericEdgeTable&) = delete;
  void operator=(const vtkGenericEdgeTable&) = delete;
};
 
#endif