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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkImagePadFilter.cxx,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.
=========================================================================*/
#include "vtkImagePadFilter.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkDataSetAttributes.h"
#include "vtkStreamingDemandDrivenPipeline.h"
vtkCxxRevisionMacro(vtkImagePadFilter, "$Revision: 1.34 $");
vtkStandardNewMacro(vtkImagePadFilter);
//----------------------------------------------------------------------------
// Constructor sets default values
vtkImagePadFilter::vtkImagePadFilter()
{
int idx;
// Initialize output image extent to INVALID
for (idx = 0; idx < 3; ++idx)
{
this->OutputWholeExtent[idx * 2] = 0;
this->OutputWholeExtent[idx * 2 + 1] = -1;
}
// Set Output numberOfScalarComponents to INVALID
this->OutputNumberOfScalarComponents = -1;
}
//----------------------------------------------------------------------------
void vtkImagePadFilter::SetOutputWholeExtent(int extent[6])
{
int idx, modified = 0;
for (idx = 0; idx < 6; ++idx)
{
if (this->OutputWholeExtent[idx] != extent[idx])
{
this->OutputWholeExtent[idx] = extent[idx];
modified = 1;
}
}
if (modified)
{
this->Modified();
}
}
//----------------------------------------------------------------------------
void vtkImagePadFilter::SetOutputWholeExtent(int minX, int maxX,
int minY, int maxY,
int minZ, int maxZ)
{
int extent[6];
extent[0] = minX; extent[1] = maxX;
extent[2] = minY; extent[3] = maxY;
extent[4] = minZ; extent[5] = maxZ;
this->SetOutputWholeExtent(extent);
}
//----------------------------------------------------------------------------
void vtkImagePadFilter::GetOutputWholeExtent(int extent[6])
{
int idx;
for (idx = 0; idx < 6; ++idx)
{
extent[idx] = this->OutputWholeExtent[idx];
}
}
//----------------------------------------------------------------------------
// Just change the Image extent.
int vtkImagePadFilter::RequestInformation (
vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
if (this->OutputWholeExtent[0] > this->OutputWholeExtent[1])
{
// invalid setting, it has not been set, so default to whole Extent
inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),
this->OutputWholeExtent);
}
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),
this->OutputWholeExtent,6);
if (this->OutputNumberOfScalarComponents < 0)
{
vtkInformation *inScalarInfo = vtkDataObject::GetActiveFieldInformation(inInfo,
vtkDataObject::FIELD_ASSOCIATION_POINTS, vtkDataSetAttributes::SCALARS);
if (!inScalarInfo)
{
vtkErrorMacro("Missing scalar field on input information!");
return 0;
}
// invalid setting, it has not been set, so default to input.
this->OutputNumberOfScalarComponents
= inScalarInfo->Get(vtkDataObject::FIELD_NUMBER_OF_COMPONENTS());
}
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, -1,
this->OutputNumberOfScalarComponents);
return 1;
}
void vtkImagePadFilter::ComputeInputUpdateExtent (int inExt[6],
int outExt[6],
int wholeExtent[6])
{
int idx;
// Clip
for (idx = 0; idx < 3; ++idx)
{
inExt[idx*2] = outExt[idx*2];
inExt[idx*2+1] = outExt[idx*2+1];
if (inExt[idx*2] < wholeExtent[idx*2])
{
inExt[idx*2] = wholeExtent[idx*2];
}
if (inExt[idx*2] > wholeExtent[idx*2 + 1])
{
inExt[idx*2] = wholeExtent[idx*2 + 1];
}
if (inExt[idx*2+1] < wholeExtent[idx*2])
{
inExt[idx*2+1] = wholeExtent[idx*2];
}
if (inExt[idx*2 + 1] > wholeExtent[idx*2 + 1])
{
inExt[idx*2 + 1] = wholeExtent[idx*2 + 1];
}
}
}
//----------------------------------------------------------------------------
// Just clip the request. The subclass may need to overwrite this method.
int vtkImagePadFilter::RequestUpdateExtent (
vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
int wholeExtent[6];
int inExt[6];
// handle XYZ
inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),wholeExtent);
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(),inExt);
this->ComputeInputUpdateExtent(inExt, inExt, wholeExtent);
inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(),inExt,6);
return 1;
}
void vtkImagePadFilter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "OutputNumberOfScalarComponents: "
<< this->OutputNumberOfScalarComponents << "\n";
}
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