vtkTestFilterSelfProgressFilter

VTKExamples/Cxx/Developers/vtkTestFilterSelfProgressFilter

Code

vtkTestFilterSelfProgressFilter.cxx

#include "vtkSmartPointer.h"

#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkInformationVector.h"
#include "vtkInformation.h"
#include "vtkDataObject.h"
#include "vtkCallbackCommand.h"

#include "vtkTestFilterSelfProgressFilter.h"

vtkStandardNewMacro(vtkTestFilterSelfProgressFilter);

vtkTestFilterSelfProgressFilter::vtkTestFilterSelfProgressFilter()
{
  vtkSmartPointer<vtkCallbackCommand> progressCallback =
      vtkSmartPointer<vtkCallbackCommand>::New();
  progressCallback->SetCallback(this->ProgressFunction);

  this->AddObserver(vtkCommand::ProgressEvent, progressCallback);
}

void vtkTestFilterSelfProgressFilter::ProgressFunction(vtkObject* caller, long unsigned int eventId, void* clientData, void* callData)
{
  vtkTestFilterSelfProgressFilter* testFilter = static_cast<vtkTestFilterSelfProgressFilter*>(caller);
  cout << "Progress: " << testFilter->GetProgress() << endl;
}

int vtkTestFilterSelfProgressFilter::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
  vtkPolyData *input = vtkPolyData::SafeDownCast(
      inInfo->Get(vtkDataObject::DATA_OBJECT()));

  vtkPolyData *output = vtkPolyData::SafeDownCast(
      outInfo->Get(vtkDataObject::DATA_OBJECT()));

  for(vtkIdType i = 0; i < input->GetNumberOfPoints(); i++)
  {
    this->UpdateProgress(static_cast<double>(i)/input->GetNumberOfPoints());
  }

  output->ShallowCopy(input);

  return 1;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(vtkTestFilterSelfProgressFilter)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(vtkTestFilterSelfProgressFilter MACOSX_BUNDLE vtkTestFilterSelfProgressFilter.cxx)

target_link_libraries(vtkTestFilterSelfProgressFilter ${VTK_LIBRARIES})

Download and Build vtkTestFilterSelfProgressFilter

Click here to download vtkTestFilterSelfProgressFilter and its CMakeLists.txt file. Once the tarball vtkTestFilterSelfProgressFilter.tar has been downloaded and extracted,

cd vtkTestFilterSelfProgressFilter/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:

./vtkTestFilterSelfProgressFilter

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.