FilterSelfProgress
vtk-examples/Cxx/Developers/FilterSelfProgress
Question
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Code¶
FilterSelfProgress.cxx
#include <vtkSmartPointer.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkCallbackCommand.h>
#include <vtkCommand.h>
#include "vtkTestFilterSelfProgressFilter.h"
void ProgressFunction(vtkObject* caller, long unsigned int eventId, void* clientData, void* callData);
int main(int /* argc */, char ** /* argv */)
{
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
vtkSmartPointer<vtkTestFilterSelfProgressFilter> testFilter =
vtkSmartPointer<vtkTestFilterSelfProgressFilter>::New();
testFilter->SetInputConnection(sphereSource->GetOutputPort());
testFilter->Update();
return EXIT_SUCCESS;
}
vtkTestFilterSelfProgressFilter.h
#ifndef __vtkTestFilterSelfProgressFilter_h
#define __vtkTestFilterSelfProgressFilter_h
#include <vtkPolyDataAlgorithm.h>
class vtkTestFilterSelfProgressFilter : public vtkPolyDataAlgorithm
{
public:
vtkTypeMacro(vtkTestFilterSelfProgressFilter,vtkAlgorithm);
static vtkTestFilterSelfProgressFilter *New();
protected:
vtkTestFilterSelfProgressFilter();
~vtkTestFilterSelfProgressFilter() {}
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;
static void ProgressFunction(vtkObject* caller, long unsigned int eventId, void* clientData, void* callData);
private:
vtkTestFilterSelfProgressFilter(const vtkTestFilterSelfProgressFilter&) = delete;
void operator=(const vtkTestFilterSelfProgressFilter&) = delete;
};
#endif
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 = dynamic_cast<vtkPolyData*>(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkPolyData *output = dynamic_cast<vtkPolyData*>(
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 3.3 FATAL_ERROR)
project(FilterSelfProgress)
find_package(VTK COMPONENTS
vtkCommonCore
vtkCommonDataModel
vtkFiltersSources
QUIET
)
if (NOT VTK_FOUND)
message("Skipping FilterSelfProgress: ${VTK_NOT_FOUND_MESSAGE}")
return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE})
add_executable(FilterSelfProgress MACOSX_BUNDLE FilterSelfProgress.cxx )
target_link_libraries(FilterSelfProgress PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(FilterSelfProgress MACOSX_BUNDLE FilterSelfProgress.cxx )
target_link_libraries(FilterSelfProgress PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS FilterSelfProgress
MODULES ${VTK_LIBRARIES}
)
endif ()
Download and Build FilterSelfProgress¶
Click here to download FilterSelfProgress and its CMakeLists.txt file. Once the tarball FilterSelfProgress.tar has been downloaded and extracted,
cd FilterSelfProgress/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:
./FilterSelfProgress
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.