VTK/Examples/Cxx/Utilities/ShareCamera

ShareCamera.cxx

#include <vtkSphereSource.h>
#include <vtkProperty.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
 
int main(int, char *[])
{
  vtkSmartPointer<vtkRenderWindow> renderWindow = 
    vtkSmartPointer<vtkRenderWindow>::New();
 
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
 
  renderWindowInteractor->SetRenderWindow(renderWindow);
 
  // Define viewport ranges
  double xmins[4] = {0,.5,0,.5};
  double xmaxs[4] = {0.5,1,0.5,1};
  double ymins[4] = {0,0,.5,.5};
  double ymaxs[4]= {0.5,0.5,1,1};
  
  vtkCamera* camera;
    
  for(unsigned i = 0; i < 4; i++)
    {
    vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
 
    renderWindow->AddRenderer(renderer);
  
    if(i == 0)
      {
      camera = renderer->GetActiveCamera();
      }
    else
      {
      renderer->SetActiveCamera(camera);
      }
    renderer->SetViewport(xmins[i],ymins[i],xmaxs[i],ymaxs[i]);
 
    // Create a sphere
    vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New();
    sphereSource->SetCenter(0.0, 0.0, 0.0);
    sphereSource->SetRadius(5);
    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);
    renderer->AddActor(actor);
    renderer->ResetCamera();
 
    renderWindow->Render();
    renderWindow->SetWindowName("Multiple ViewPorts");
    
    }
    
  renderWindowInteractor->Start();
  
  return EXIT_SUCCESS;
}

Please try the new VTKExamples website.

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(ShareCamera)

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

add_executable(ShareCamera MACOSX_BUNDLE ShareCamera.cxx)

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

Download and Build ShareCamera

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

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

cd ShareCamera/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:

./ShareCamera

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.