vtkTestGraphAlgorithmFilter
VTKExamples/Cxx/Developers/vtkTestGraphAlgorithmFilter
Code
vtkTestGraphAlgorithmFilter.cxx
#include "vtkTestGraphAlgorithmFilter.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkInformationVector.h"
#include "vtkInformation.h"
#include "vtkDataObject.h"
#include "vtkSmartPointer.h"
#include "vtkMutableUndirectedGraph.h"
#include "vtkMutableDirectedGraph.h"
#include "vtkMutableGraphHelper.h"
vtkStandardNewMacro(vtkTestGraphAlgorithmFilter);
int vtkTestGraphAlgorithmFilter::RequestData(vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and ouptut
vtkGraph *input = vtkGraph::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkGraph *output = vtkGraph::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkSmartPointer<vtkMutableDirectedGraph> mdg =
vtkSmartPointer<vtkMutableDirectedGraph>::New();
vtkSmartPointer<vtkMutableUndirectedGraph> mug =
vtkSmartPointer<vtkMutableUndirectedGraph>::New();
if(input->IsA("vtkMutableUndirectedGraph"))
{
vtkSmartPointer<vtkMutableUndirectedGraph> ug =
vtkSmartPointer<vtkMutableUndirectedGraph>::New();
ug->AddVertex();
output->ShallowCopy(ug);
}
else if(input->IsA("vtkMutableDirectedGraph"))
{
vtkSmartPointer<vtkMutableDirectedGraph> dg =
vtkSmartPointer<vtkMutableDirectedGraph>::New();
dg->AddVertex();
output->ShallowCopy(dg);
}
std::cout << "Output is type: " << output->GetClassName() << std::endl;
return 1;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(vtkTestGraphAlgorithmFilter)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(vtkTestGraphAlgorithmFilter MACOSX_BUNDLE vtkTestGraphAlgorithmFilter.cxx)
target_link_libraries(vtkTestGraphAlgorithmFilter ${VTK_LIBRARIES})
Download and Build vtkTestGraphAlgorithmFilter
Click here to download vtkTestGraphAlgorithmFilter and its CMakeLists.txt file. Once the tarball vtkTestGraphAlgorithmFilter.tar has been downloaded and extracted,
cd vtkTestGraphAlgorithmFilter/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:
./vtkTestGraphAlgorithmFilter
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.