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/*=========================================================================
Program: Visualization Toolkit
Module: vtkDicer.cxx
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.
=========================================================================*/
#include "vtkDicer.h"
#include "vtkDataSet.h"
#include "vtkMath.h"
// Instantiate object.
vtkDicer::vtkDicer()
{
this->NumberOfPointsPerPiece = 5000;
this->NumberOfPieces = 10;
this->MemoryLimit = 50 * 1024; // 50 mebibytes
this->NumberOfActualPieces = 0;
this->FieldData = 0;
this->DiceMode = VTK_DICE_MODE_NUMBER_OF_POINTS;
}
// This method unifies the measures used to define piece size. Call this
// in the subclass Execute() method.
void vtkDicer::UpdatePieceMeasures(vtkDataSet *input)
{
int numPts = input->GetNumberOfPoints();
unsigned long memSize = input->GetActualMemorySize();
if ( this->DiceMode == VTK_DICE_MODE_NUMBER_OF_POINTS )
{
this->NumberOfPieces = static_cast<int>(
ceil(static_cast<double>(numPts)/this->NumberOfPointsPerPiece));
this->MemoryLimit = static_cast<unsigned long>(
ceil(static_cast<double>(memSize)/this->NumberOfPieces));
}
else if ( this->DiceMode == VTK_DICE_MODE_SPECIFIED_NUMBER )
{
this->NumberOfPointsPerPiece = static_cast<int>(
ceil(static_cast<double>(numPts)/this->NumberOfPieces));
this->MemoryLimit = static_cast<unsigned long>(
ceil(static_cast<double>(memSize)/this->NumberOfPieces));
}
else //this->DiceMode == VTK_DICE_MODE_MEMORY_LIMIT
{
this->NumberOfPieces = static_cast<int>(
ceil(static_cast<double>(memSize)/this->MemoryLimit));
this->NumberOfPointsPerPiece = static_cast<int>(
ceil(static_cast<double>(numPts)/this->NumberOfPieces));
}
}
void vtkDicer::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Number of Points per Piece: "
<< this->NumberOfPointsPerPiece << "\n";
os << indent << "Number of Pieces: "
<< this->NumberOfPieces << "\n";
os << indent << "Memory Limit (in kibibytes): "
<< this->MemoryLimit << "\n";
os << indent << "Number of Actual Pieces: "
<< this->NumberOfActualPieces << "\n";
os << indent << "Field Data: " << (this->FieldData ? "On\n" : "Off\n");
if ( this->DiceMode == VTK_DICE_MODE_NUMBER_OF_POINTS )
{
os << indent << "Dice Mode: Number Of Points\n";
}
else if ( this->DiceMode == VTK_DICE_MODE_SPECIFIED_NUMBER )
{
os << indent << "Dice Mode: Specified Number\n";
}
else
{
os << indent << "Dice Mode: Memory Limit\n";
}
}
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