# DijkstraGraphGeodesicPath

VTKExamples/CSharp/PolyData/DijkstraGraphGeodesicPath

### Description

A tutorial on how to setup a Windows Forms Application utilizing ActiViz.NET can be found here: Setup a Windows Forms Application to use ActiViz.NET

### Code

DijkstraGraphGeodesicPath.cs

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Windows.Forms;
    using System.Diagnostics;

    using Kitware.VTK;

    namespace ActiViz.Examples {
       public partial class Form1 : Form {
          public Form1() {
             InitializeComponent();
          }

          private void renderWindowControl1_Load(object sender, EventArgs e) {
             try {
                DijkstraGraphGeodesicPath();
             }
             catch(Exception ex) {
                MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
             }
          }

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

             vtkDijkstraGraphGeodesicPath dijkstra = vtkDijkstraGraphGeodesicPath.New();
             dijkstra.SetInputConnection(sphereSource.GetOutputPort());
             dijkstra.SetStartVertex(0);
             dijkstra.SetEndVertex(10);
             dijkstra.Update();

             // Create a mapper and actor
             vtkPolyDataMapper pathMapper = vtkPolyDataMapper.New();
             pathMapper.SetInputConnection(dijkstra.GetOutputPort());

             vtkActor pathActor = vtkActor.New();
             pathActor.SetMapper(pathMapper);
             pathActor.GetProperty().SetColor(1, 0, 0); // Red
             pathActor.GetProperty().SetLineWidth(4);

             // Create a mapper and actor
             vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
             mapper.SetInputConnection(sphereSource.GetOutputPort());

             vtkActor actor = vtkActor.New();
             actor.SetMapper(mapper);

             // get a reference to the renderwindow of our renderWindowControl1
             vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
             // renderer
             vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
             // set background color
             renderer.SetBackground(0.3, 0.6, 0.3);
             // add our actor to the renderer
             renderer.AddActor(actor);
             renderer.AddActor(pathActor);
          }
       }
    }