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# ClosedSurface

VTKEx/CSharp/PolyData/ClosedSurface

### Description

A tutorial on how to setup a Console Application utilizing Kitware.VTK.dll can be found here: Setup a Console Application to use Kitware.VTK.dll

Other languages

See (Cxx), (Python)

Question

If you have a simple question about this example contact us at VTKExProject If your question is more complex and may require extended discussion, please use the VTK Discourse Forum

### Code

ClosedSurface.cs

    using System;

    using Kitware.VTK;

    namespace ActiViz.Examples {
       class Program {
          static void Main(string[] args) {
             ClosedSurface();
          }

          private static void ClosedSurface() {
             // Create a sphere
             vtkSphereSource sphereSource = vtkSphereSource.New();
             sphereSource.Update();

             vtkFeatureEdges featureEdges = vtkFeatureEdges.New();
             featureEdges.FeatureEdgesOff();
             featureEdges.BoundaryEdgesOn();
             featureEdges.NonManifoldEdgesOn();
             featureEdges.SetInputConnection(sphereSource.GetOutputPort());
             featureEdges.Update();

             int numberOfOpenEdges = featureEdges.GetOutput().GetNumberOfCells();

             if(numberOfOpenEdges > 0) {
                Console.WriteLine("Surface is not closed");
             }
             else {
                Console.WriteLine("Surface is closed");
             }
             // nothing to show graphically
             Console.WriteLine("\nPress any key to continue...");
             Console.ReadKey();
          }
       }
    }