/// <summary>
/// Create the corresponding <see cref="LightsState.Light"/> for this object.
/// </summary>
/// <returns>
/// It returns the <see cref="LightsState.Light"/> equivalent to this SceneObjectLight.
/// </returns>
public override LightsState.Light ToLight(GraphicsContext ctx, SceneGraphContext sceneCtx)
{
TransformStateBase transformState = (TransformStateBase)sceneCtx.GraphicsStateStack.Current[TransformStateBase.StateSetIndex];
LightsState.LightSpot light = new LightsState.LightSpot();
SetLightParameters(sceneCtx, light);
IModelMatrix worldModel = transformState.LocalModelView;
IMatrix3x3 normalMatrix = worldModel.GetComplementMatrix(3, 3).GetInverseMatrix().Transpose();
light.Direction = ((Vertex3f)normalMatrix.Multiply((Vertex3f)Direction)).Normalized;
light.Position = (Vertex3f)worldModel.Multiply(Vertex3f.Zero);
light.AttenuationFactors = AttenuationFactors;
light.FallOff = new Vertex2f((float)Math.Cos(Angle.ToRadians(FalloffAngle)), FalloffExponent);
// Shadow mapping
if (_ShadowMap != null && _ShadowViewMatrix != null)
{
// Determined later: light.ShadowMapIndex
light.ShadowMapMvp.Set(_ShadowViewMatrix);
light.ShadowMap2D = _ShadowMap;
}
else
{
light.ShadowMapIndex = -1;
light.ShadowMap2D = null;
}
return(light);
}
/// <summary>
/// Multiply this IModelMatrix with another IModelMatrix.
/// </summary>
/// <param name="a">
/// A <see cref="IModelMatrix"/> that specify the right multiplication operand.
/// </param>
/// <returns>
/// A <see cref="IModelMatrix"/> resulting from the product of this matrix and the matrix <paramref name="a"/>.
/// </returns>
IModelMatrix IModelMatrix.Multiply(IModelMatrix a)
{
ModelMatrixDouble rModelMatrix = new ModelMatrixDouble();
ModelMatrixDouble modelMatrixDouble = a as ModelMatrixDouble;
if (modelMatrixDouble != null)
{
ComputeMatrixProduct(rModelMatrix, this, modelMatrixDouble);
return(rModelMatrix);
}
ModelMatrix modelMatrix = a as ModelMatrix;
if (modelMatrix != null)
{
ComputeMatrixProduct(rModelMatrix, this, modelMatrix);
return(rModelMatrix);
}
throw new NotSupportedException(String.Format("multiplication of {0} by {1} is not supported", GetType(), a.GetType()));
}
/// <summary>
/// Multiply this IModelMatrix with another IModelMatrix.
/// </summary>
/// <param name="a">
/// A <see cref="IModelMatrix"/> that specifies the right multiplication operand.
/// </param>
/// <returns>
/// A <see cref="IModelMatrix"/> resulting from the product of this matrix and the matrix <paramref name="a"/>.
/// </returns>
IModelMatrix IModelMatrix.Multiply(IModelMatrix a)
{
ModelMatrix rModelMatrix = new ModelMatrix();
ModelMatrix modelMatrix = a as ModelMatrix;
if (modelMatrix != null) {
ComputeMatrixProduct(rModelMatrix, this, modelMatrix);
return (rModelMatrix);
}
ModelMatrixDouble modelMatrixDouble = a as ModelMatrixDouble;
if (modelMatrixDouble != null) {
ComputeMatrixProduct(rModelMatrix, this, modelMatrixDouble);
return (rModelMatrix);
}
throw new NotSupportedException(String.Format("multiplication of {0} by {1} is not supported", GetType(), a.GetType()));
}
/// <summary>
/// Draw the bounding volume.
/// </summary>
/// <param name="ctx">
/// The <see cref="GraphicsContext"/> used for drawing.
/// </param>
public void Draw(GraphicsContext ctx, IModelMatrix objectViewModel)
{
}
