VTK  9.1.0
vtkStructuredNeighbor.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkStructuredNeighbor.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14  =========================================================================*/
20 #ifndef vtkStructuredNeighbor_h
21 #define vtkStructuredNeighbor_h
22 
23 #include "vtkFiltersGeometryModule.h" // For export macro
24 #include "vtkObject.h"
25 
26 class VTKFILTERSGEOMETRY_EXPORT vtkStructuredNeighbor
27 {
28 public:
29  // An enum that defines the neighboring orientation which is stored in a
30  // 3-tuple vtkStructuredNeighbor::Orientation. In each dimension, there
31  // is a high and low end, the orientation tuple defines how to grow ghost
32  // layers along each dimension.
34  {
35  SUBSET_LO = -2, // The grid is a subset of the neighboring grid and the
36  // ghost layers are pointing away from the low end
37  LO = -1, // The grid partially overlap with its neighbor on the
38  // low end, thus, ghost layers are pointing away from
39  // the low end
40  ONE_TO_ONE = 0, // grids abut 1-to-1 in both HI and LO, the
41  // cardinality of both grids is the same in the
42  // corresponding dimension.
43  HI = 1, // The grid partially overlaps with its neighbor on the
44  // high end, thus, ghost layers are pointing away from
45  // the high end
46  SUBSET_HI = 2, // The grid is a subset of the neighboring grid and the
47  // ghost layers are pointing away from the high end
48  SUBSET_BOTH = 3, // The grid is a subset of the neighboring grid and the
49  // ghost layers grow from both low and high ends.
50  SUPERSET = 4, // grid is a superset of the neighboring grid in the
51  // given direction.
52  UNDEFINED = 5 // the neighboring relationship is undefined, e.g., if
53  // we are checking 2D data, the neighbor orientation
54  // in the 3rd dimension is undefined.
55  };
56 
57  // Class Member Variables made public for easier access
58  int NeighborID; // The registered ID of the neighboring grid
59  int OverlapExtent[6]; // The extent at which the grids overlap
60  int SendExtent[6]; // The extent that we send to this neighbor
61  int RcvExtent[6]; // The extent that we receive from this neighbor
62  int Orientation[3]; // Defines how we are neighboring with this grid, see
63  // NeighborOrientation enum above.
64 
69 
74  vtkStructuredNeighbor(const int NeiID, int overlap[6]);
75 
80  vtkStructuredNeighbor(const int NeiID, int overlap[6], int orient[3]);
81 
86 
91 
93 
97  {
98  if (this != &N)
99  {
100  this->Orientation[0] = N.Orientation[0];
101  this->Orientation[1] = N.Orientation[1];
102  this->Orientation[2] = N.Orientation[2];
103  this->NeighborID = N.NeighborID;
104  for (int i = 0; i < 6; ++i)
105  {
106  this->SendExtent[i] = N.SendExtent[i];
107  this->RcvExtent[i] = N.RcvExtent[i];
108  this->OverlapExtent[i] = N.OverlapExtent[i];
109  } // END for
110  } // END if
111  return *this;
112  }
114 
116 
122  virtual void ComputeSendAndReceiveExtent(int gridRealExtent[6], int gridGhostedExtent[6],
123  int neiRealExtent[6], int WholeExtent[6], const int N);
125 };
126 
127 #endif /* vtkStructuredNeighbor_h */
128 // VTK-HeaderTest-Exclude: vtkStructuredNeighbor.h
An internal, light-weight class used to store neighbor information.
vtkStructuredNeighbor()
Default Constructor.
virtual void ComputeSendAndReceiveExtent(int gridRealExtent[6], int gridGhostedExtent[6], int neiRealExtent[6], int WholeExtent[6], const int N)
Computes the SendExtent and the RcvExtent for this neighbor.
vtkStructuredNeighbor(const int NeiID, int overlap[6], int orient[3])
Custom constructor.
vtkStructuredNeighbor & operator=(const vtkStructuredNeighbor &N)
Overload assignment operator.
virtual ~vtkStructuredNeighbor()
Default destructor.
vtkStructuredNeighbor(const vtkStructuredNeighbor &N)
Copy constructor.
vtkStructuredNeighbor(const int NeiID, int overlap[6])
Custom constructor.