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//---------------------------------------------------------------------------
//
// <copyright file="Light.cs" company="Microsoft">
// Copyright (C) Microsoft Corporation. All rights reserved.
// </copyright>
//
//
// Description: 3D light implementation.
//
// See spec at http://avalon/medialayer/Specifications/Avalon3D%20API%20Spec.mht
//
// History:
// 06/18/2003 : t-gregr - Created
//
//---------------------------------------------------------------------------
using System;
using System.Diagnostics;
using System.Windows.Media;
using MS.Internal.Media3D;
namespace System.Windows.Media.Media3D
{
/// <summary>
/// Lights are Model3D's. These include Ambient, Positional, Directional and Spot lights.
/// They're very much modeled on the Direct3D lighting set, but have the additional
/// property of being part of a modeling hierarchy, and are thus subject to coordinate
/// space transformations.
/// </summary>
public abstract partial class Light : Model3D
{
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
// Prevent 3rd parties from extending this abstract base class.
internal Light() {}
#endregion Constructors
//------------------------------------------------------
//
// Public Methods
//
//------------------------------------------------------
//------------------------------------------------------
//
// Public Properties
//
//------------------------------------------------------
#region Public Properties
internal override void RayHitTestCore(RayHitTestParameters rayParams)
{
// Lights are considered to be part of the model graph, but they
// have no geometry and therefore can not be hit tested.
}
internal override Rect3D CalculateSubgraphBoundsInnerSpace()
{
// Lights are considered to be part of the model graph, but they
// have no geometry and therefore no bounds.
return Rect3D.Empty;
}
#endregion Public Properties
}
}
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