WindowModifiedEvent
VTKExamples/Cxx/Utilities/WindowModifiedEvent
Description¶
This example limits the horizontal window size to 400.
Code¶
WindowModifiedEvent.cxx
#include <vtkSphereSource.h> #include <vtkPolyData.h> #include <vtkSmartPointer.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkCallbackCommand.h> void WindowModifiedCallback( vtkObject* caller, long unsigned int vtkNotUsed(eventId), void* vtkNotUsed(clientData), void* vtkNotUsed(callData) ) { std::cout << "Window modified" << std::endl; std::cout << caller->GetClassName() << std::endl; vtkRenderWindow* window = static_cast<vtkRenderWindow*>(caller); int* windowSize = window->GetSize(); std::cout << "Size: " << windowSize[0] << " " << windowSize[1] << std::endl; if(windowSize[0] > 400) { window->SetSize(400, windowSize[1]); window->Render(); window->Modified(); window->Render(); } } int main(int, char *[]) { // Create a sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); // Create a mapper and actor vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(sphereSource->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); // Add the actor to the scene renderer->AddActor(actor); renderer->SetBackground(1,1,1); // Background color white vtkSmartPointer<vtkCallbackCommand> m_pModifiedCallback = vtkSmartPointer<vtkCallbackCommand>::New(); m_pModifiedCallback->SetCallback (WindowModifiedCallback); //m_pModifiedCallback->SetClientData(this); renderWindow->AddObserver(vtkCommand::ModifiedEvent,m_pModifiedCallback); // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(WindowModifiedEvent) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(WindowModifiedEvent MACOSX_BUNDLE WindowModifiedEvent.cxx) target_link_libraries(WindowModifiedEvent ${VTK_LIBRARIES})
Download and Build WindowModifiedEvent¶
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 WindowModifiedEvent and its CMakeLists.txt file. Once the tarball WindowModifiedEvent.tar has been downloaded and extracted,
cd WindowModifiedEvent/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:
./WindowModifiedEvent
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.