DataAnimationSubclass
VTKExamples/Cxx/Utilities/DataAnimationSubclass
Code¶
DataAnimationSubclass.cxx
#include <vtkSmartPointer.h> #include <vtkObjectFactory.h> #include <vtkSphereSource.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkProgrammableFilter.h> #include <vtkCommand.h> class CommandSubclass : public vtkCommand { public: vtkTypeMacro(CommandSubclass, vtkCommand); static CommandSubclass *New() { return new CommandSubclass; } void Execute(vtkObject *caller, unsigned long vtkNotUsed(eventId), void *vtkNotUsed(callData)) { std::cout << "timer callback" << std::endl; vtkRenderWindowInteractor *iren = static_cast<vtkRenderWindowInteractor*>(caller); this->ProgrammableFilter->Modified(); iren->Render(); } vtkSmartPointer<vtkProgrammableFilter> ProgrammableFilter; }; unsigned int counter; //global void AdjustPoints(void* arguments) { std::cout << "AdjustPoints" << std::endl; vtkProgrammableFilter* programmableFilter = static_cast<vtkProgrammableFilter*>(arguments); vtkPoints* inPts = programmableFilter->GetPolyDataInput()->GetPoints(); vtkIdType numPts = inPts->GetNumberOfPoints(); vtkSmartPointer<vtkPoints> newPts = vtkSmartPointer<vtkPoints>::New(); newPts->SetNumberOfPoints(numPts); for(vtkIdType i = 0; i < numPts; i++) { double p[3]; inPts->GetPoint(i, p); newPts->SetPoint(i, p); } double p0[3]; inPts->GetPoint(0, p0); p0[2] = p0[2] + counter * 0.1; newPts->SetPoint(0, p0); programmableFilter->GetPolyDataOutput()->CopyStructure(programmableFilter->GetPolyDataInput()); programmableFilter->GetPolyDataOutput()->SetPoints(newPts); counter++; } int main(int, char *[]) { // Create a sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); vtkSmartPointer<vtkProgrammableFilter> programmableFilter = vtkSmartPointer<vtkProgrammableFilter>::New(); programmableFilter->SetInputConnection(sphereSource->GetOutputPort()); programmableFilter->SetExecuteMethod(AdjustPoints, programmableFilter); // Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(programmableFilter->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); // Create a renderer, render window, and interactor vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); // Initialize must be called prior to creating timer events. renderWindowInteractor->Initialize(); renderWindowInteractor->CreateRepeatingTimer(500); vtkSmartPointer<CommandSubclass> timerCallback = vtkSmartPointer<CommandSubclass>::New(); timerCallback->ProgrammableFilter = programmableFilter; renderWindowInteractor->AddObserver ( vtkCommand::TimerEvent, timerCallback ); // Add the actor to the scene renderer->AddActor(actor); renderer->SetBackground(1,1,1); // Background color white // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(DataAnimationSubclass) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(DataAnimationSubclass MACOSX_BUNDLE DataAnimationSubclass.cxx) target_link_libraries(DataAnimationSubclass ${VTK_LIBRARIES})
Download and Build DataAnimationSubclass¶
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Click here to download DataAnimationSubclass and its CMakeLists.txt file. Once the tarball DataAnimationSubclass.tar has been downloaded and extracted,
cd DataAnimationSubclass/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:
./DataAnimationSubclass
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.