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133 lines
4.4 KiB
133 lines
4.4 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkImageTranslateExtent.cxx,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "vtkImageTranslateExtent.h"
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#include "vtkImageData.h"
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#include "vtkInformation.h"
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#include "vtkInformationVector.h"
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#include "vtkObjectFactory.h"
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#include "vtkStreamingDemandDrivenPipeline.h"
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#include "vtkPointData.h"
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vtkCxxRevisionMacro(vtkImageTranslateExtent, "$Revision: 1.26 $");
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vtkStandardNewMacro(vtkImageTranslateExtent);
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//----------------------------------------------------------------------------
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vtkImageTranslateExtent::vtkImageTranslateExtent()
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{
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int idx;
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for (idx = 0; idx < 3; ++idx)
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{
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this->Translation[idx] = 0;
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}
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}
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//----------------------------------------------------------------------------
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void vtkImageTranslateExtent::PrintSelf(ostream& os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os,indent);
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os << indent << "Translation: (" << this->Translation[0]
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<< "," << this->Translation[1] << "," << this->Translation[2] << endl;
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}
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//----------------------------------------------------------------------------
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// Change the WholeExtent
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int vtkImageTranslateExtent::RequestInformation (
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vtkInformation * vtkNotUsed(request),
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vtkInformationVector **inputVector,
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vtkInformationVector *outputVector)
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{
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// get the info objects
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vtkInformation* outInfo = outputVector->GetInformationObject(0);
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vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
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int idx, extent[6];
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double spacing[3], origin[3];
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inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),extent);
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inInfo->Get(vtkDataObject::ORIGIN(), origin);
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inInfo->Get(vtkDataObject::SPACING(), spacing);
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// TranslateExtent the OutputWholeExtent with the input WholeExtent
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for (idx = 0; idx < 3; ++idx)
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{
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// change extent
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extent[2*idx] += this->Translation[idx];
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extent[2*idx+1] += this->Translation[idx];
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// change origin so the data does not shift
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origin[idx] -= (double)(this->Translation[idx]) * spacing[idx];
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}
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outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),extent,6);
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outInfo->Set(vtkDataObject::ORIGIN(),origin,3);
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return 1;
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}
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//----------------------------------------------------------------------------
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// This method simply copies by reference the input data to the output.
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int vtkImageTranslateExtent::RequestData(
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vtkInformation *vtkNotUsed(request),
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vtkInformationVector **inputVector,
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vtkInformationVector *outputVector)
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{
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vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
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vtkInformation *outInfo = outputVector->GetInformationObject(0);
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vtkImageData *inData = vtkImageData::SafeDownCast(
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inInfo->Get(vtkDataObject::DATA_OBJECT()));
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vtkImageData *outData = vtkImageData::SafeDownCast(
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outInfo->Get(vtkDataObject::DATA_OBJECT()));
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int extent[6];
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// since inData can be larger than update extent.
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inData->GetExtent(extent);
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for (int i = 0; i < 3; ++i)
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{
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extent[i*2] += this->Translation[i];
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extent[i*2+1] += this->Translation[i];
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}
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outData->SetExtent(extent);
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outData->GetPointData()->PassData(inData->GetPointData());
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return 1;
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}
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//----------------------------------------------------------------------------
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int vtkImageTranslateExtent::RequestUpdateExtent (
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vtkInformation * vtkNotUsed(request),
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vtkInformationVector **inputVector,
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vtkInformationVector *outputVector)
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{
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// get the info objects
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vtkInformation* outInfo = outputVector->GetInformationObject(0);
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vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
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int inExtent[6], extent[6];
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outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), inExtent);
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extent[0] = inExtent[0] - this->Translation[0];
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extent[1] = inExtent[1] - this->Translation[0];
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extent[2] = inExtent[2] - this->Translation[1];
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extent[3] = inExtent[3] - this->Translation[1];
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extent[4] = inExtent[4] - this->Translation[2];
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extent[5] = inExtent[5] - this->Translation[2];
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inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), extent, 6);
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return 1;
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}
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