Spot light
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="" Height="300" Width="300" Loaded="Window1_Loaded">
<Window.Resources>
<MeshGeometry3D x:Key="triangleMesh" Positions="-1,-1,0 1,-1,-2 1,1,0" TriangleIndices="0 1 2" />
</Window.Resources>
<UniformGrid>
<Viewport3D x:Name="vp1">
<Viewport3D.Camera>
<PerspectiveCamera LookDirection="0,0,-1" Position="0,0,5" />
</Viewport3D.Camera>
<ModelVisual3D>
<ModelVisual3D.Content>
<SpotLight
Range="10"
Direction="0,0,-1"
OuterConeAngle="25"
InnerConeAngle="20"
Position="0,0,9"
LinearAttenuation="0.1"
Color="White" />
</ModelVisual3D.Content>
</ModelVisual3D>
</Viewport3D>
</UniformGrid>
</Window>
//File:Window.xaml.vb
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Media.Media3D
Namespace WpfApplication1
Public Partial Class Window1
Inherits Window
Public Sub New()
InitializeComponent()
End Sub
Private Sub Window1_Loaded(sender As Object, e As RoutedEventArgs)
Dim triangleMesh As MeshGeometry3D = DirectCast(TryFindResource("triangleMesh"), MeshGeometry3D)
CreateTriangles(vp1, 4, triangleMesh)
End Sub
Private Sub CreateTriangles(viewport3D As Viewport3D, triangleCount As Integer, triangleMesh As MeshGeometry3D)
Dim modelVisual3D As New ModelVisual3D()
Dim geometryModel3D As New GeometryModel3D()
geometryModel3D.Geometry = triangleMesh
geometryModel3D.Material = New DiffuseMaterial(Brushes.Firebrick)
modelVisual3D.Content = geometryModel3D
Dim rotateTransform As New RotateTransform3D()
rotateTransform.Rotation = New AxisAngleRotation3D(New Vector3D(0, 0, -1), 20)
modelVisual3D.Transform = rotateTransform
viewport3D.Children.Add(modelVisual3D)
End Sub
End Class
End Namespace
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