<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      HorizontalAlignment="Center" VerticalAlignment="Center">


<Viewport3D ClipToBounds="True" Width="300" Height="200">
  <Viewport3D.Camera>
        <PerspectiveCamera Position="0,0,4" LookDirection="0,0,-1"
                           UpDirection="0,1,0" FieldOfView="45" />
  </Viewport3D.Camera>

  <ModelVisual3D>
    <ModelVisual3D.Content>

<!-- Example 17-2. A simple 3D model -->

<Model3DGroup>

  <DirectionalLight Direction="0,0,-1" />

  <GeometryModel3D>
    <GeometryModel3D.Geometry>

    <MeshGeometry3D Positions="0,1,0  1,-1,0  -1,-1,0"
                Normals="0,0,1  0,0,1  0,0,1"
                TriangleIndices="0,2,1" />

    </GeometryModel3D.Geometry>
    <GeometryModel3D.Material>
      <DiffuseMaterial Brush="Red" />
    </GeometryModel3D.Material>
  </GeometryModel3D>

</Model3DGroup>

<!-- End of Example 16-39. -->

    </ModelVisual3D.Content>
  </ModelVisual3D>
</Viewport3D>
</Page>
