BiDimensionalWidget
VTKExamples/Cxx/Widgets/BiDimensionalWidget
Code¶
BiDimensionalWidget.cxx
#include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkPolyData.h> #include <vtkSmartPointer.h> #include <vtkSphereSource.h> #include <vtkBiDimensionalWidget.h> #include <vtkBiDimensionalRepresentation2D.h> #include <vtkCommand.h> class vtkBiDimensionalCallback : public vtkCommand { public: static vtkBiDimensionalCallback *New() { return new vtkBiDimensionalCallback; } virtual void Execute(vtkObject *caller, unsigned long, void*) { vtkBiDimensionalWidget *biDimensionalWidget = reinterpret_cast<vtkBiDimensionalWidget*>(caller); vtkBiDimensionalRepresentation2D* representation = static_cast<vtkBiDimensionalRepresentation2D*>(biDimensionalWidget->GetRepresentation()); double p1[3]; representation->GetPoint1DisplayPosition(p1); double p2[3]; representation->GetPoint1DisplayPosition(p2); double p3[3]; representation->GetPoint1DisplayPosition(p3); double p4[3]; representation->GetPoint1DisplayPosition(p4); // Display one of the points, just so we know it's working std::cout << "P1: " << p1[0] << " " << p1[1] << " " << p1[2] << std::endl; } vtkBiDimensionalCallback(){} }; int main(int, char *[]) { 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); // A renderer and render window vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); renderer->AddActor(actor); // An interactor vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); vtkSmartPointer<vtkBiDimensionalWidget> biDimensionalWidget = vtkSmartPointer<vtkBiDimensionalWidget>::New(); biDimensionalWidget->SetInteractor(renderWindowInteractor); biDimensionalWidget->CreateDefaultRepresentation(); vtkSmartPointer<vtkBiDimensionalCallback> biDimensionalCallback = vtkSmartPointer<vtkBiDimensionalCallback>::New(); biDimensionalWidget->AddObserver(vtkCommand::InteractionEvent,biDimensionalCallback); // Render an image (lights and cameras are created automatically) renderWindow->Render(); renderWindowInteractor->Initialize(); renderWindow->Render(); biDimensionalWidget->On(); // Begin mouse interaction renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(BiDimensionalWidget) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(BiDimensionalWidget MACOSX_BUNDLE BiDimensionalWidget.cxx) target_link_libraries(BiDimensionalWidget ${VTK_LIBRARIES})
Download and Build BiDimensionalWidget¶
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 BiDimensionalWidget and its CMakeLists.txt file. Once the tarball BiDimensionalWidget.tar has been downloaded and extracted,
cd BiDimensionalWidget/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:
./BiDimensionalWidget
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.