/// <summary>
/// Merge this state with another one.
/// </summary>
/// <param name="state">
/// A <see cref="IGraphicsState"/> having the same <see cref="StateIdentifier"/> of this state.
/// </param>
/// <remarks>
public override void Merge(IGraphicsState state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
try {
TransformStateBase otherState = (TransformStateBase)state;
// Override projection matrix, if defined
if (otherState.LocalProjection != null)
{
LocalProjection = otherState.LocalProjection;
}
// Affine local model
LocalModel.Set(LocalModel.Multiply(otherState.LocalModel));
} catch (InvalidCastException) {
throw new ArgumentException("not a TransformStateBase", "state");
}
}
/// <summary>
/// Merge this state with another one.
/// </summary>
/// <param name="state">
/// A <see cref="IGraphicsState"/> having the same <see cref="StateIdentifier"/> of this state.
/// </param>
public override void Merge(IGraphicsState state)
{
if (state == null)
{
throw new ArgumentNullException("state");
}
try {
TransformStateBase otherState = (TransformStateBase)state;
// Projection
if (otherState.LocalProjection != null)
{
LocalProjection = otherState.LocalProjection;
}
if (otherState.HasLocalModel)
{
// LocalModel update
LocalModel.Set(LocalModel.Multiply(otherState.LocalModel));
// LocalModelView update
if (LocalModelView != null)
{
LocalModelView.Set(LocalModelView.Multiply(otherState.LocalModel));
}
else if (otherState.LocalModelView != null)
{
LocalModelView = otherState.LocalModelView;
}
// LocalModelViewProjection update
LocalModelViewProjection.Set(LocalModelViewProjection.Multiply(otherState.LocalModel));
}
} catch (InvalidCastException) {
throw new ArgumentException("not a TransformStateBase", "state");
}
}