RubberBand3D

VTKExamples/Cxx/Interaction/RubberBand3D


Code

RubberBand3D.cxx

#include <vtkSmartPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkSphereSource.h>
#include <vtkInteractorStyleRubberBand3D.h>
#include <vtkObjectFactory.h>

class MyRubberBand3D : public vtkInteractorStyleRubberBand3D
{
  public:
    static MyRubberBand3D* New();
    vtkTypeMacro(MyRubberBand3D, vtkInteractorStyleRubberBand3D);

    virtual void OnLeftButtonUp() 
    {
      // Forward events
      vtkInteractorStyleRubberBand3D::OnLeftButtonUp();

      std::cout << "Start position: " << this->StartPosition[0] << " " << this->StartPosition[1] << std::endl;
      std::cout << "End position: " << this->EndPosition[0] << " " << this->EndPosition[1] << std::endl;
    }

};
vtkStandardNewMacro(MyRubberBand3D);

int main(int, char *[])
{
  vtkSmartPointer<vtkSphereSource> sphereSource = 
    vtkSmartPointer<vtkSphereSource>::New();

  // 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);

  // An interactor
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  renderWindowInteractor->SetRenderWindow(renderWindow);

  // Add the actors to the scene
  renderer->AddActor(actor);
  renderer->SetBackground(1,1,1); // Background color white

  renderWindow->Render();

  vtkSmartPointer<MyRubberBand3D> style = 
    vtkSmartPointer<MyRubberBand3D>::New();
  renderWindowInteractor->SetInteractorStyle( style );

  // Begin mouse interaction
  renderWindowInteractor->Start();

  return EXIT_SUCCESS;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(RubberBand3D)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(RubberBand3D MACOSX_BUNDLE RubberBand3D.cxx )

target_link_libraries(RubberBand3D ${VTK_LIBRARIES})

Download and Build RubberBand3D

Click here to download RubberBand3D and its CMakeLists.txt file. Once the tarball RubberBand3D.tar has been downloaded and extracted,

cd RubberBand3D/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:

./RubberBand3D

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.