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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageNoiseSource.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 "vtkImageNoiseSource.h"
#include "vtkImageData.h"
#include "vtkImageProgressIterator.h"
#include "vtkMath.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
vtkStandardNewMacro(vtkImageNoiseSource);
//----------------------------------------------------------------------------
vtkImageNoiseSource::vtkImageNoiseSource()
{
this->Minimum = 0.0;
this->Maximum = 10.0;
this->WholeExtent[0] = 0; this->WholeExtent[1] = 255;
this->WholeExtent[2] = 0; this->WholeExtent[3] = 255;
this->WholeExtent[4] = 0; this->WholeExtent[5] = 0;
this->SetNumberOfInputPorts(0);
}
//----------------------------------------------------------------------------
void vtkImageNoiseSource::SetWholeExtent(int xMin, int xMax,
int yMin, int yMax,
int zMin, int zMax)
{
int modified = 0;
if (this->WholeExtent[0] != xMin)
{
modified = 1;
this->WholeExtent[0] = xMin ;
}
if (this->WholeExtent[1] != xMax)
{
modified = 1;
this->WholeExtent[1] = xMax ;
}
if (this->WholeExtent[2] != yMin)
{
modified = 1;
this->WholeExtent[2] = yMin ;
}
if (this->WholeExtent[3] != yMax)
{
modified = 1;
this->WholeExtent[3] = yMax ;
}
if (this->WholeExtent[4] != zMin)
{
modified = 1;
this->WholeExtent[4] = zMin ;
}
if (this->WholeExtent[5] != zMax)
{
modified = 1;
this->WholeExtent[5] = zMax ;
}
if (modified)
{
this->Modified();
}
}
//----------------------------------------------------------------------------
int vtkImageNoiseSource::RequestInformation (
vtkInformation * vtkNotUsed(request),
vtkInformationVector** vtkNotUsed( inputVector ),
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
outInfo->Set(vtkDataObject::SPACING(), 1.0, 1.0, 1.0);
outInfo->Set(vtkDataObject::ORIGIN(), 0.0, 0.0, 0.0);
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),
this->WholeExtent,6);
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, VTK_DOUBLE, 1);
return 1;
}
void vtkImageNoiseSource::ExecuteDataWithInformation(vtkDataObject *output,
vtkInformation *outInfo)
{
vtkImageData *data = this->AllocateOutputData(output, outInfo);
if (data->GetScalarType() != VTK_DOUBLE)
{
vtkErrorMacro("Execute: This source only outputs doubles");
}
vtkImageProgressIterator<double> outIt(data, data->GetExtent(), this, 0);
// Loop through ouput pixels
while (!outIt.IsAtEnd())
{
double* outSI = outIt.BeginSpan();
double* outSIEnd = outIt.EndSpan();
while (outSI != outSIEnd)
{
// now process the components
*outSI = this->Minimum +
(this->Maximum - this->Minimum) * vtkMath::Random();
outSI++;
}
outIt.NextSpan();
}
}
void vtkImageNoiseSource::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Minimum: " << this->Minimum << "\n";
os << indent << "Maximum: " << this->Maximum << "\n";
}
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