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