MouseEventsObserver
VTKExamples/Cxx/Interaction/MouseEventsObserver
Code¶
MouseEventsObserver.cxx
#include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkSphereSource.h> #include <vtkPolyDataMapper.h> #include <vtkCommand.h> #include <vtkActor.h> #include <vtkCallbackCommand.h> #include <vtkSmartPointer.h> #include <vtkPointPicker.h> #include <vtkCamera.h> //#include <vtkInteractorObserver.h> void ClickCallbackFunction ( vtkObject* caller, long unsigned int eventId, void* clientData, void* callData ); int main(int, char *[]) { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->SetCenter(0.0, 0.0, 0.0); sphereSource->SetRadius(5.0); sphereSource->Update(); vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(sphereSource->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->SetBackground(1,1,1); // Background color white renderer->AddActor(actor); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow ( renderWindow ); vtkSmartPointer<vtkCallbackCommand> clickCallback = vtkSmartPointer<vtkCallbackCommand>::New(); clickCallback->SetCallback ( ClickCallbackFunction ); renderWindowInteractor->AddObserver ( vtkCommand::LeftButtonPressEvent, clickCallback ); renderWindowInteractor->Initialize(); renderWindowInteractor->Start(); return EXIT_SUCCESS; } void ClickCallbackFunction ( vtkObject* vtkNotUsed(caller), long unsigned int vtkNotUsed(eventId), void* vtkNotUsed(clientData), void* vtkNotUsed(callData) ) { std::cout << "Click callback" << std::endl; // Get the interactor like this: // vtkRenderWindowInteractor *iren = // static_cast<vtkRenderWindowInteractor*>(caller); }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(MouseEventsObserver) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(MouseEventsObserver MACOSX_BUNDLE MouseEventsObserver.cxx) target_link_libraries(MouseEventsObserver ${VTK_LIBRARIES})
Download and Build MouseEventsObserver¶
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 MouseEventsObserver and its CMakeLists.txt file. Once the tarball MouseEventsObserver.tar has been downloaded and extracted,
cd MouseEventsObserver/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:
./MouseEventsObserver
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.