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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageTranslateExtent.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 "vtkImageTranslateExtent.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkPointData.h"
vtkStandardNewMacro(vtkImageTranslateExtent);
//----------------------------------------------------------------------------
vtkImageTranslateExtent::vtkImageTranslateExtent()
{
int idx;
for (idx = 0; idx < 3; ++idx)
{
this->Translation[idx] = 0;
}
}
//----------------------------------------------------------------------------
void vtkImageTranslateExtent::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Translation: (" << this->Translation[0]
<< "," << this->Translation[1] << "," << this->Translation[2] << endl;
}
//----------------------------------------------------------------------------
// Change the WholeExtent
int vtkImageTranslateExtent::RequestInformation (
vtkInformation * vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
int idx, extent[6];
double spacing[3], origin[3];
inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),extent);
inInfo->Get(vtkDataObject::ORIGIN(), origin);
inInfo->Get(vtkDataObject::SPACING(), spacing);
// TranslateExtent the OutputWholeExtent with the input WholeExtent
for (idx = 0; idx < 3; ++idx)
{
// change extent
extent[2*idx] += this->Translation[idx];
extent[2*idx+1] += this->Translation[idx];
// change origin so the data does not shift
origin[idx] -= static_cast<double>(this->Translation[idx]) * spacing[idx];
}
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),extent,6);
outInfo->Set(vtkDataObject::ORIGIN(),origin,3);
return 1;
}
//----------------------------------------------------------------------------
// This method simply copies by reference the input data to the output.
int vtkImageTranslateExtent::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
vtkImageData *inData = vtkImageData::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkImageData *outData = vtkImageData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
int extent[6];
// since inData can be larger than update extent.
inData->GetExtent(extent);
for (int i = 0; i < 3; ++i)
{
extent[i*2] += this->Translation[i];
extent[i*2+1] += this->Translation[i];
}
outData->SetExtent(extent);
outData->GetPointData()->PassData(inData->GetPointData());
return 1;
}
//----------------------------------------------------------------------------
int vtkImageTranslateExtent::RequestUpdateExtent (
vtkInformation * vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
int inExtent[6], extent[6];
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), inExtent);
extent[0] = inExtent[0] - this->Translation[0];
extent[1] = inExtent[1] - this->Translation[0];
extent[2] = inExtent[2] - this->Translation[1];
extent[3] = inExtent[3] - this->Translation[1];
extent[4] = inExtent[4] - this->Translation[2];
extent[5] = inExtent[5] - this->Translation[2];
inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), extent, 6);
return 1;
}
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