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LightsFixedCollection Class

Defines a collection of lights. This class cannot be inherited.

Namespace:  Microsoft.WindowsMobile.DirectX.Direct3D
Assembly:  Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)

'Declaration
Public NotInheritable Class LightsFixedCollection
'Usage
Dim instance As LightsFixedCollection

This class accommodates fixed-point math operations.

The following code example shows how to use a LightsFixedCollection class.

' This code example is from the  
' Direct3D Mobile Fixed Point Lighting Sample 
' of the .NET Compact Framework Samples in the SDK. 

' The FrameMove method is called once per frame,  
' and is the entry point for animating the scene. 

Public Sub FrameMove()
    lightData = device.LightsFixed(2)

    ' Rotate through the various light types 
    If Fix(appTime) Mod 20 < 10 Then
        device.LightsFixed(2).Type = LightType.Point
    Else
        device.LightsFixed(2).Type = LightType.Directional
    End If 

    ' Make sure the light type is supported by the device.  If  
    ' VertexProcessingCaps.PositionAllLights is not set, the device 
    ' does not support point or spot lights, so change light #2's 
    ' type to a directional light. 
    If Not _
     device.DeviceCaps.VertexProcessingCaps.SupportsPositionalLights _
        Then 
        If device.LightsFixed(2).Type = LightType.Point Then
            device.LightsFixed(2).Type = LightType.Directional
        End If 
    End If 

    ' Values for the light position, direction, and color 
    Dim x As Single = System.Convert.ToSingle(Math.Sin(appTime * 2.0F))
    Dim y As Single = System.Convert.ToSingle( _
        Math.Sin(appTime * 2.246F))
    Dim z As Single = System.Convert.ToSingle( _
        Math.Sin(appTime * 2.64F))

    Dim r As Byte = System.Convert.ToByte((0.5F + 0.5F * x) * &HFF)
    Dim g As Byte = System.Convert.ToByte((0.5F + 0.5F * y) * &HFF)
    Dim b As Byte = System.Convert.ToByte((0.5F + 0.5F * z) * &HFF)
    device.LightsFixed(2).DiffuseColor = _
        ColorValueFixed.FromColor( _
        System.Drawing.Color.FromArgb(r, g, b))
    device.LightsFixed(2).Range = 100.0F

    Select Case device.LightsFixed(2).Type
        Case LightType.Point
            device.LightsFixed(2).Position = _
                New Vector3Fixed(4.5F * x, 4.5F * y, 4.5F * z)
            device.LightsFixed(2).Attenuation1 = 0.4F
        Case LightType.Directional
            device.LightsFixed(2).Direction = _
                New Vector3Fixed(x, y, z)
    End Select
    device.LightsFixed(2).Update()
End Sub

System.Object
  Microsoft.WindowsMobile.DirectX.Direct3D.LightsFixedCollection

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Compact Framework

Supported in: 3.5, 2.0
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