VTKExamples/Cxx/Developers/vtkTestFilterProgressFilter
Description
ifndef __vtkTestFilterProgressFilter_h
define __vtkTestFilterProgressFilter_h
include "vtkPolyDataAlgorithm.h"
class vtkTestFilterProgressFilter : public vtkPolyDataAlgorithm { public: static vtkTestFilterProgressFilter *New(); vtkTypeMacro(vtkTestFilterProgressFilter,vtkAlgorithm);
protected: vtkTestFilterProgressFilterr(); ~vtkTestFilterProgressFilter() VTK_OVERRIDE {}
int RequestData(vtkInformation , vtkInformationVector , vtkInformationVector ) VTK_OVERRIDE;
static void ProgressFunction(vtkObject caller, long unsigned int eventId, void clientData, void* callData);
private: vtkTestFilterProgressFilter(const vtkTestFilterProgressFilter&) VTK_DELETE_FUNCTION; void operator=(const vtkTestFilterProgressFilterr&) VTK_DELETE_FUNCTION;
};
endif
Code
vtkTestFilterProgressFilter.cxx
#include "vtkSmartPointer.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkInformationVector.h"
#include "vtkInformation.h"
#include "vtkDataObject.h"
#include "vtkCallbackCommand.h"
#include "vtkTestFilterProgressFilter.h"
vtkStandardNewMacro(vtkTestFilterProgressFilter);
vtkTestFilterProgressFilter::vtkTestFilterProgressFilter()
{
vtkSmartPointer<vtkCallbackCommand> progressCallback =
vtkSmartPointer<vtkCallbackCommand>::New();
progressCallback->SetCallback(this->ProgressFunction);
this->AddObserver(vtkCommand::ProgressEvent, progressCallback);
}
void vtkTestFilterProgressFilter::ProgressFunction(vtkObject* caller, long unsigned int eventId, void* clientData, void* callData)
{
vtkTestFilterProgressFilterr* testFilter = static_cast<vtkTestFilterProgressFilter*>(caller);
cout << "Progress: " << testFilter->GetProgress() << endl;
}
int vtkTestFilterProgressFilter::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(vtkTestFilterProgressFilter)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(vtkTestFilterProgressFilter MACOSX_BUNDLE vtkTestFilterProgressFilter.cxx)
target_link_libraries(vtkTestFilterProgressFilter ${VTK_LIBRARIES})
Download and Build vtkTestFilterProgressFilter
Click here to download vtkTestFilterProgressFilter and its CMakeLists.txt file. Once the tarball vtkTestFilterProgressFilter.tar has been downloaded and extracted,
cd vtkTestFilterProgressFilter/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:
./vtkTestFilterProgressFilter
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.