Proprietà Device.LightsFixed
Aggiornamento: novembre 2007
Ottiene l'insieme di luci sulla periferica corrente, mediante operazioni matematiche a virgola fissa.
Spazio dei nomi: Microsoft.WindowsMobile.DirectX.Direct3D
Assembly: Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)
Sintassi
'Dichiarazione
Public ReadOnly Property LightsFixed As LightsFixedCollection
'Utilizzo
Dim instance As Device
Dim value As LightsFixedCollection
value = instance.LightsFixed
public LightsFixedCollection LightsFixed { get; }
public:
property LightsFixedCollection^ LightsFixed {
LightsFixedCollection^ get ();
}
public function get LightsFixed () : LightsFixedCollection
Valore proprietà
Tipo: Microsoft.WindowsMobile.DirectX.Direct3D.LightsFixedCollection
Oggetto LightFixed.
Note
In .NET Compact Framework viene fornito l'oggetto LightFixed per operazioni matematiche in virgola fissa.
Esempi
Nell'esempio di codice riportato di seguito viene illustrato come utilizzare le strutture LightFixed.
' 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
// 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 void FrameMove()
{
lightData = device.LightsFixed[2];
// Rotate through the various light types
if (((int)appTime % 20) < 10)
device.LightsFixed[2].Type = LightType.Point;
else
device.LightsFixed[2].Type = LightType.Directional;
// 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
(!device.DeviceCaps.VertexProcessingCaps.SupportsPositionalLights)
{
if (device.LightsFixed[2].Type == LightType.Point)
device.LightsFixed[2].Type = LightType.Directional;
}
// Values for the light position, direction, and color
float x = (float)Math.Sin(appTime*2.000f);
float y = (float)Math.Sin(appTime*2.246f);
float z = (float)Math.Sin(appTime*2.640f);
byte r = (byte)((0.5f + 0.5f * x) * 0xff);
byte g = (byte)((0.5f + 0.5f * y) * 0xff);
byte b = (byte)((0.5f + 0.5f * z) * 0xff);
device.LightsFixed[2].DiffuseColor =
ColorValueFixed.FromColor(System.Drawing.Color.FromArgb(r,
g, b));
device.LightsFixed[2].Range = 100.0f;
switch(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;
break;
case LightType.Directional:
device.LightsFixed[2].Direction =
new Vector3Fixed(x, y, z);
break;
}
device.LightsFixed[2].Update();
}
Autorizzazioni
- Attendibilità totale per il chiamante immediato. Impossibile utilizzare questo membro in codice parzialmente attendibile. Per ulteriori informazioni, vedere Utilizzo di librerie da codice parzialmente attendibile.
Piattaforme
Windows CE, Windows Mobile per Smartphone, Windows Mobile per Pocket PC
.NET Framework e .NET Compact Framework non supportano tutte le versioni di ciascuna piattaforma. Per un elenco delle versioni supportate, vedere Requisiti di sistema di .NET Framework.
Informazioni sulla versione
.NET Compact Framework
Supportato in: 3.5, 2.0