# Vertex

VTKExamples/CSharp/GeometricObjects/Vertex

### 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

Vertex.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 {
                Vertex();
             }
             catch(Exception ex) {
                MessageBox.Show(ex.Message, "Exception", MessageBoxButtons.OK);
             }
          }

          private void Vertex() {
             vtkPoints points = vtkPoints.New();
             points.InsertNextPoint(0, 0, 0);

             vtkVertex vertex = vtkVertex.New();
             vertex.GetPointIds().SetId(0, 0);

             vtkCellArray vertices = vtkCellArray.New();
             vertices.InsertNextCell(vertex);

             vtkPolyData polydata = vtkPolyData.New();
             polydata.SetPoints(points);
             polydata.SetVerts(vertices);

             // Visualize
             vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
             mapper.SetInputConnection(polydata.GetProducerPort());
             vtkActor actor = vtkActor.New();
             actor.SetMapper(mapper);
             actor.GetProperty().SetPointSize(10);
             vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
             vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
             renderer.SetBackground(0.2, 0.3, 0.4);
             // Add the actor to the scene
             renderer.AddActor(actor);
          }
       }
    }