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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkExtentTranslator.h,v $
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.
=========================================================================*/
// .NAME vtkExtentTranslator - Generates a structured extent from unstructured.
// .SECTION Description
// vtkExtentTranslator generates a structured extent from an unstructured
// extent. It uses a recursive scheme that splits the largest axis. A hard
// coded extent can be used for a starting point.
// .SECTION Caveats
// This object is still under development.
#ifndef __vtkExtentTranslator_h
#define __vtkExtentTranslator_h
#include "vtkObject.h"
class VTK_COMMON_EXPORT vtkExtentTranslator : public vtkObject
{
public:
static vtkExtentTranslator *New();
vtkTypeRevisionMacro(vtkExtentTranslator,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the Piece/NumPieces. Set the WholeExtent and then call PieceToExtent.
// The result can be obtained from the Extent ivar.
vtkSetVector6Macro(WholeExtent, int);
vtkGetVector6Macro(WholeExtent, int);
vtkSetVector6Macro(Extent, int);
vtkGetVector6Macro(Extent, int);
vtkSetMacro(Piece,int);
vtkGetMacro(Piece,int);
vtkSetMacro(NumberOfPieces,int);
vtkGetMacro(NumberOfPieces,int);
vtkSetMacro(GhostLevel, int);
vtkGetMacro(GhostLevel, int);
// Description:
// These are the main methods that should be called. These methods
// are responsible for converting a piece to an extent. The signatures
// without arguments are only thread safe when each thread accesses a
// different instance. The signatures with arguements are fully thread
// safe.
virtual int PieceToExtent();
virtual int PieceToExtentByPoints();
virtual int PieceToExtentThreadSafe(int piece, int numPieces,
int ghostLevel, int *wholeExtent,
int *resultExtent, int splitMode,
int byPoints);
// Description:
// How should the streamer break up extents. Block mode
// tries to break an extent up into cube blocks. It always chooses
// the largest axis to split.
// Slab mode first breaks up the Z axis. If it gets to one slice,
// then it starts breaking up other axes.
void SetSplitModeToBlock()
{this->SplitMode = vtkExtentTranslator::BLOCK_MODE;}
void SetSplitModeToXSlab()
{this->SplitMode = vtkExtentTranslator::X_SLAB_MODE;}
void SetSplitModeToYSlab()
{this->SplitMode = vtkExtentTranslator::Y_SLAB_MODE;}
void SetSplitModeToZSlab()
{this->SplitMode = vtkExtentTranslator::Z_SLAB_MODE;}
vtkGetMacro(SplitMode,int);
protected:
vtkExtentTranslator();
~vtkExtentTranslator();
// Description:
// Returns 0 if no data exist for a piece.
// The whole extent Should be passed in as the extent.
// It is modified to return the result.
int SplitExtent(int piece, int numPieces, int *extent, int splitMode);
int SplitExtentByPoints(int piece, int numPieces, int *extent,
int splitMode);
int Piece;
int NumberOfPieces;
int GhostLevel;
int Extent[6];
int WholeExtent[6];
int SplitMode;
//BTX
// Don't change the numbers here - they are used in the code
// to indicate array indices.
enum Modes {
X_SLAB_MODE=0,
Y_SLAB_MODE=1,
Z_SLAB_MODE=2,
BLOCK_MODE= 3
};
//ETX
private:
vtkExtentTranslator(const vtkExtentTranslator&); // Not implemented.
void operator=(const vtkExtentTranslator&); // Not implemented.
};
#endif
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