**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2008 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
typedef etl::handle<ValueNode_BLineCalcTangent> Handle;
typedef etl::handle<const ValueNode_BLineCalcTangent> ConstHandle;
+ virtual ValueBase operator()(Time t, Real amount)const;
virtual ValueBase operator()(Time t)const;
virtual ~ValueNode_BLineCalcTangent();