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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkProgressReporter.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#include "itkProgressReporter.h"
#include "itkNumericTraits.h"
namespace itk
{
//----------------------------------------------------------------------------
ProgressReporter::ProgressReporter(ProcessObject* filter, int threadId,
unsigned long numberOfPixels,
unsigned long numberOfUpdates,
float initialProgress,
float progressWeight):
m_Filter(filter),
m_ThreadId(threadId),
m_CurrentPixel(0),
m_InitialProgress( initialProgress ),
m_ProgressWeight( progressWeight )
{
float numPixels = numberOfPixels;
float numUpdates = numberOfUpdates;
// Make sure we have at least one pixel.
if(numPixels < 1)
{
numPixels = 1;
}
// We cannot update more times than there are pixels.
if(numUpdates > numPixels)
{
numUpdates = numPixels;
}
// Calculate the interval for updates.
m_PixelsPerUpdate = static_cast<unsigned long>(numPixels/numUpdates);
m_InverseNumberOfPixels = 1.0f / numPixels;
// Only thread 0 should update progress. (But all threads need to
// count pixels so they can check the abort flag.)
if(m_ThreadId == 0)
{
// Set the progress to initial progress. The filter is just starting.
m_Filter->UpdateProgress( m_InitialProgress );
}
m_PixelsBeforeUpdate = m_PixelsPerUpdate;
}
//----------------------------------------------------------------------------
ProgressReporter::~ProgressReporter()
{
// Only thread 0 should update progress.
if(m_ThreadId == 0)
{
// Set the progress to the end of its current range. The filter has finished.
m_Filter->UpdateProgress( m_InitialProgress + m_ProgressWeight );
}
}
} // end namespace itk
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