# MultipleInputPorts

VTKExamples/Cxx/Developers/MultipleInputPorts

### Code

MultipleInputPorts.cxx

    #include <vtkSmartPointer.h>
    #include <vtkSphereSource.h>

    #include "vtkTestMultipleInputPortsFilter.h"

    int main (int argc, char *argv[])
    {
      vtkSmartPointer<vtkSphereSource> sphereSource1 =
          vtkSmartPointer<vtkSphereSource>::New();
      sphereSource1->SetThetaResolution(5);
      sphereSource1->Update();

      vtkSmartPointer<vtkSphereSource> sphereSource2 =
          vtkSmartPointer<vtkSphereSource>::New();
      sphereSource2->SetThetaResolution(10);
      sphereSource2->Update();

      vtkSmartPointer<vtkTestMultipleInputPortsFilter> filter =
          vtkSmartPointer<vtkTestMultipleInputPortsFilter>::New();
      filter->SetInputConnection(0, sphereSource1->GetOutputPort());
      filter->SetInputConnection(1, sphereSource2->GetOutputPort());
      filter->Update();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(MultipleInputPorts)

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

    add_executable(MultipleInputPorts MACOSX_BUNDLE MultipleInputPorts.cxx)

    target_link_libraries(MultipleInputPorts ${VTK_LIBRARIES})

### Download and Build MultipleInputPorts

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

    cd MultipleInputPorts/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:

    ./MultipleInputPorts

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.