VTK/Examples/Cxx/Interaction/RubberBandZoom

This example demonstrates how to select a region of the window to zoom in.

RubberBandZoom.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 <vtkInteractorStyleRubberBandZoom.h>

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<vtkInteractorStyleRubberBandZoom> style = 
    vtkSmartPointer<vtkInteractorStyleRubberBandZoom>::New();
  
  renderWindowInteractor->SetInteractorStyle( style );
  
  // Begin mouse interaction
  renderWindowInteractor->Start();
  
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(RubberBandZoom)

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

add_executable(RubberBandZoom MACOSX_BUNDLE RubberBandZoom.cxx)

if(VTK_LIBRARIES)
  target_link_libraries(RubberBandZoom ${VTK_LIBRARIES})
else()
  target_link_libraries(RubberBandZoom vtkHybrid vtkWidgets)
endif()

Download and Build RubberBandZoom

Click here to download RubberBandZoom. and its CMakeLists.txt file.

Once the tarball RubberBandZoom.tar has been downloaded and extracted,

cd RubberBandZoom/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:

./RubberBandZoom

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.

Color.