InteractorStyleUser
VTKExamples/Cxx/Interaction/InteractorStyleUser
Description
This style is designed to NOT provide any default functionality. You must specify how to handle every event that you want handled.
Code
InteractorStyleUser.cxx
#include <vtkSmartPointer.h>
#include <vtkCallbackCommand.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkInteractorStyleUser.h>
static void ClickCallbackFunction ( vtkObject* caller,
long unsigned int eventId,
void* clientData,
void* callData );
int main(int, char *[])
{
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
// Visualize
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();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
renderer->AddActor(actor);
renderer->SetBackground(1,1,1); // Background color white
renderWindow->Render();
vtkSmartPointer<vtkCallbackCommand> clickCallback =
vtkSmartPointer<vtkCallbackCommand>::New();
clickCallback->SetCallback(ClickCallbackFunction);
renderWindowInteractor->AddObserver ( vtkCommand::LeftButtonPressEvent, clickCallback );
vtkSmartPointer<vtkInteractorStyleUser> style =
vtkSmartPointer<vtkInteractorStyleUser>::New();
renderWindowInteractor->SetInteractorStyle(style);
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
void ClickCallbackFunction (vtkObject *,
long unsigned int,
void *,
void *)
{
std::cout << "Click callback" << std::endl;
// We can get the calling object like this:
// vtkRenderWindowInteractor *iren =
// static_cast<vtkRenderWindowInteractor*>(caller);
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(InteractorStyleUser)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(InteractorStyleUser MACOSX_BUNDLE InteractorStyleUser.cxx)
target_link_libraries(InteractorStyleUser ${VTK_LIBRARIES})
Download and Build InteractorStyleUser
Click here to download InteractorStyleUser and its CMakeLists.txt file. Once the tarball InteractorStyleUser.tar has been downloaded and extracted,
cd InteractorStyleUser/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:
./InteractorStyleUser
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.