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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageAppendComponents.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 "vtkImageAppendComponents.h"
#include "vtkAlgorithmOutput.h"
#include "vtkImageData.h"
#include "vtkImageProgressIterator.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkDataSetAttributes.h"
#include "vtkStreamingDemandDrivenPipeline.h"
vtkStandardNewMacro(vtkImageAppendComponents);
//----------------------------------------------------------------------------
void vtkImageAppendComponents::ReplaceNthInputConnection(int idx,
vtkAlgorithmOutput *input)
{
if (idx < 0 || idx >= this->GetNumberOfInputConnections(0))
{
vtkErrorMacro("Attempt to replace connection idx " << idx
<< " of input port " << 0 << ", which has only "
<< this->GetNumberOfInputConnections(0)
<< " connections.");
return;
}
if (!input || !input->GetProducer())
{
vtkErrorMacro("Attempt to replace connection index " << idx
<< " for input port " << 0 << " with " <<
(!input ? "a null input." : "an input with no producer."));
return;
}
this->SetNthInputConnection(0, idx, input);
}
//----------------------------------------------------------------------------
// The default vtkImageAlgorithm semantics are that SetInput() puts
// each input on a different port, we want all the image inputs to
// go on the first port.
void vtkImageAppendComponents::SetInputData(int idx, vtkDataObject *input)
{
this->SetInputDataInternal(idx, input);
}
//----------------------------------------------------------------------------
vtkDataObject *vtkImageAppendComponents::GetInput(int idx)
{
if (this->GetNumberOfInputConnections(0) <= idx)
{
return 0;
}
return vtkImageData::SafeDownCast(
this->GetExecutive()->GetInputData(0, idx));
}
//----------------------------------------------------------------------------
// This method tells the ouput it will have more components
int vtkImageAppendComponents::RequestInformation (
vtkInformation * vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkInformation *inScalarInfo;
int idx1, num;
num = 0;
for (idx1 = 0; idx1 < this->GetNumberOfInputConnections(0); ++idx1)
{
inScalarInfo = vtkDataObject::GetActiveFieldInformation(
inputVector[0]->GetInformationObject(idx1),
vtkDataObject::FIELD_ASSOCIATION_POINTS, vtkDataSetAttributes::SCALARS);
if (inScalarInfo &&
inScalarInfo->Has( vtkDataObject::FIELD_NUMBER_OF_COMPONENTS() ) )
{
num += inScalarInfo->Get( vtkDataObject::FIELD_NUMBER_OF_COMPONENTS() );
}
}
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, -1, num);
return 1;
}
//----------------------------------------------------------------------------
// This templated function executes the filter for any type of data.
template <class T>
void vtkImageAppendComponentsExecute(vtkImageAppendComponents *self,
vtkImageData *inData,
vtkImageData *outData,
int outComp,
int outExt[6], int id, T *)
{
vtkImageIterator<T> inIt(inData, outExt);
vtkImageProgressIterator<T> outIt(outData, outExt, self, id);
int numIn = inData->GetNumberOfScalarComponents();
int numSkip = outData->GetNumberOfScalarComponents() - numIn;
int i;
// Loop through ouput pixels
while (!outIt.IsAtEnd())
{
T* inSI = inIt.BeginSpan();
T* outSI = outIt.BeginSpan() + outComp;
T* outSIEnd = outIt.EndSpan();
while (outSI < outSIEnd)
{
// now process the components
for (i = 0; i < numIn; ++i)
{
*outSI = *inSI;
++outSI;
++inSI;
}
outSI = outSI + numSkip;
}
inIt.NextSpan();
outIt.NextSpan();
}
}
//----------------------------------------------------------------------------
int vtkImageAppendComponents::FillInputPortInformation(int i,
vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_IS_REPEATABLE(), 1);
return this->Superclass::FillInputPortInformation(i,info);
}
//----------------------------------------------------------------------------
// This method is passed a input and output regions, and executes the filter
// algorithm to fill the output from the inputs.
// It just executes a switch statement to call the correct function for
// the regions data types.
void vtkImageAppendComponents::ThreadedRequestData (
vtkInformation * vtkNotUsed( request ),
vtkInformationVector** vtkNotUsed( inputVector ),
vtkInformationVector * vtkNotUsed( outputVector ),
vtkImageData ***inData,
vtkImageData **outData,
int outExt[6], int id)
{
int idx1, outComp;
outComp = 0;
for (idx1 = 0; idx1 < this->GetNumberOfInputConnections(0); ++idx1)
{
if (inData[0][idx1] != NULL)
{
// this filter expects that input is the same type as output.
if (inData[0][idx1]->GetScalarType() != outData[0]->GetScalarType())
{
vtkErrorMacro(<< "Execute: input" << idx1 << " ScalarType ("
<< inData[0][idx1]->GetScalarType()
<< "), must match output ScalarType ("
<< outData[0]->GetScalarType() << ")");
return;
}
switch (inData[0][idx1]->GetScalarType())
{
vtkTemplateMacro(
vtkImageAppendComponentsExecute ( this,
inData[0][idx1], outData[0],
outComp, outExt, id,
static_cast<VTK_TT *>(0)) );
default:
vtkErrorMacro(<< "Execute: Unknown ScalarType");
return;
}
outComp += inData[0][idx1]->GetNumberOfScalarComponents();
}
}
}
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