vtkTestAlgorithmSource
VTKExamples/Cxx/Developers/vtkTestAlgorithmSource
Code
vtkTestAlgorithmSource.cxx
#include "vtkTestAlgorithmSource.h"
#include "vtkTest1.h"
#include "vtkCommand.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
vtkStandardNewMacro(vtkTestAlgorithmSource);
//----------------------------------------------------------------------------
vtkTestAlgorithmSource::vtkTestAlgorithmSource()
{
this->SetNumberOfInputPorts( 0 );
this->SetNumberOfOutputPorts( 1 );
}
//----------------------------------------------------------------------------
vtkTestAlgorithmSource::~vtkTestAlgorithmSource()
{
}
//----------------------------------------------------------------------------
void vtkTestAlgorithmSource::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//----------------------------------------------------------------------------
vtkTest1* vtkTestAlgorithmSource::GetOutput()
{
return this->GetOutput(0);
}
//----------------------------------------------------------------------------
vtkTest1* vtkTestAlgorithmSource::GetOutput(int port)
{
return vtkTest1::SafeDownCast(this->GetOutputDataObject(port));
}
//----------------------------------------------------------------------------
void vtkTestAlgorithmSource::SetOutput(vtkDataObject* d)
{
this->GetExecutive()->SetOutputData(0, d);
}
//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::ProcessRequest(vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
// Create an output object of the correct type.
if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA_OBJECT()))
{
return this->RequestDataObject(request, inputVector, outputVector);
}
// generate the data
if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA()))
{
return this->RequestData(request, inputVector, outputVector);
}
if(request->Has(vtkStreamingDemandDrivenPipeline::REQUEST_UPDATE_EXTENT()))
{
return this->RequestUpdateExtent(request, inputVector, outputVector);
}
// execute information
if(request->Has(vtkDemandDrivenPipeline::REQUEST_INFORMATION()))
{
return this->RequestInformation(request, inputVector, outputVector);
}
return this->Superclass::ProcessRequest(request, inputVector, outputVector);
}
//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::FillOutputPortInformation(
int vtkNotUsed(port), vtkInformation* info)
{
// now add our info
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTest1");
return 1;
}
//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::RequestDataObject(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** vtkNotUsed(inputVector),
vtkInformationVector* outputVector )
{
for ( int i = 0; i < this->GetNumberOfOutputPorts(); ++i )
{
vtkInformation* outInfo = outputVector->GetInformationObject( i );
vtkTest1* output = vtkTest1::SafeDownCast(
outInfo->Get( vtkDataObject::DATA_OBJECT() ) );
if ( ! output )
{
output = vtkTest1::New();
outInfo->Set( vtkDataObject::DATA_OBJECT(), output );
output->FastDelete();
this->GetOutputPortInformation( i )->Set(
vtkDataObject::DATA_EXTENT_TYPE(), output->GetExtentType() );
}
}
return 1;
}
//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::RequestInformation(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** vtkNotUsed(inputVector),
vtkInformationVector* vtkNotUsed(outputVector))
{
// do nothing let subclasses handle it
return 1;
}
//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::RequestUpdateExtent(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector,
vtkInformationVector* vtkNotUsed(outputVector))
{
int numInputPorts = this->GetNumberOfInputPorts();
for (int i=0; i<numInputPorts; i++)
{
int numInputConnections = this->GetNumberOfInputConnections(i);
for (int j=0; j<numInputConnections; j++)
{
vtkInformation* inputInfo = inputVector[i]->GetInformationObject(j);
inputInfo->Set(vtkStreamingDemandDrivenPipeline::EXACT_EXTENT(), 1);
}
}
return 1;
}
//----------------------------------------------------------------------------
// This is the superclasses style of Execute method. Convert it into
// an imaging style Execute method.
int vtkTestAlgorithmSource::RequestData(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** vtkNotUsed( inputVector ),
vtkInformationVector* vtkNotUsed(outputVector) )
{
// do nothing let subclasses handle it
return 1;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(vtkTestAlgorithmSource)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(vtkTestAlgorithmSource MACOSX_BUNDLE vtkTestAlgorithmSource.cxx)
target_link_libraries(vtkTestAlgorithmSource ${VTK_LIBRARIES})
Download and Build vtkTestAlgorithmSource
Click here to download vtkTestAlgorithmSource and its CMakeLists.txt file. Once the tarball vtkTestAlgorithmSource.tar has been downloaded and extracted,
cd vtkTestAlgorithmSource/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./vtkTestAlgorithmSource
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.