SphereWidget
VTKExamples/Cxx/Widgets/SphereWidget
Code
SphereWidget.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 <vtkSphereWidget.h>
#include <vtkSphereRepresentation.h>
#include <vtkCommand.h>
class SphereCallback : public vtkCommand
{
public:
static SphereCallback *New()
{
return new SphereCallback;
}
SphereCallback(){}
virtual void Execute(vtkObject *caller, unsigned long, void*)
{
vtkSphereWidget *sphereWidget =
reinterpret_cast<vtkSphereWidget*>(caller);
double center[3];
sphereWidget->GetCenter(center);
std::cout << "Center: " << center[0] << " " << center[1] << " " << center[2] << std::endl;
}
};
int main(int, char *[])
{
// A renderer and render window
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
// An interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
vtkSmartPointer<vtkSphereWidget> sphereWidget =
vtkSmartPointer<vtkSphereWidget>::New();
sphereWidget->SetInteractor(renderWindowInteractor);
sphereWidget->SetRepresentationToSurface();
vtkSmartPointer<SphereCallback> sphereCallback =
vtkSmartPointer<SphereCallback>::New();
sphereWidget->AddObserver(vtkCommand::InteractionEvent,sphereCallback);
renderWindow->Render();
renderWindowInteractor->Initialize();
renderWindow->Render();
sphereWidget->On();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(SphereWidget)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(SphereWidget MACOSX_BUNDLE SphereWidget.cxx)
target_link_libraries(SphereWidget ${VTK_LIBRARIES})
Download and Build SphereWidget
Click here to download SphereWidget and its CMakeLists.txt file. Once the tarball SphereWidget.tar has been downloaded and extracted,
cd SphereWidget/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:
./SphereWidget
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.