FrameRate
VTKExamples/Cxx/Utilities/FrameRate
Code¶
FrameRate.cxx
#include <vtkSmartPointer.h> #include <vtkCallbackCommand.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkMath.h> #include <vtkRenderWindow.h> #include <vtkTimerLog.h> #include <vtkSphereSource.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> static void CallbackFunction ( vtkObject* caller, long unsigned int eventId, void* clientData, void* callData ); int main(int, char *[]) { vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); for(unsigned int i = 0; i < 10; i++) { // Create a sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->SetCenter(i, 0, 0); // Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(sphereSource->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); renderer->AddActor(actor); } vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); vtkSmartPointer<vtkCallbackCommand> callback = vtkSmartPointer<vtkCallbackCommand>::New(); callback->SetCallback(CallbackFunction); renderer->AddObserver(vtkCommand::EndEvent, callback); renderer->SetBackground(.3, .6, .3); // Background color green // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; } void CallbackFunction(vtkObject* caller, long unsigned int vtkNotUsed(eventId), void* vtkNotUsed(clientData), void* vtkNotUsed(callData) ) { vtkRenderer* renderer = static_cast<vtkRenderer*>(caller); double timeInSeconds = renderer->GetLastRenderTimeInSeconds(); double fps = 1.0/timeInSeconds; std::cout << "FPS: " << fps << std::endl; std::cout << "Callback" << std::endl; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(FrameRate) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(FrameRate MACOSX_BUNDLE FrameRate.cxx) target_link_libraries(FrameRate ${VTK_LIBRARIES})
Download and Build FrameRate¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download FrameRate and its CMakeLists.txt file. Once the tarball FrameRate.tar has been downloaded and extracted,
cd FrameRate/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:
./FrameRate
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.