1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_log.h
3 ** \brief Header file for implementation of the "Natural Logarithm" valuenode conversion.
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007 Chris Moore
10 ** Copyright (c) 2008 Carlos López
12 ** This package is free software; you can redistribute it and/or
13 ** modify it under the terms of the GNU General Public License as
14 ** published by the Free Software Foundation; either version 2 of
15 ** the License, or (at your option) any later version.
17 ** This package is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ** General Public License for more details.
23 /* ========================================================================= */
25 /* === S T A R T =========================================================== */
27 #ifndef __SYNFIG_VALUENODE_LOGARITHM_H
28 #define __SYNFIG_VALUENODE_LOGARITHM_H
30 /* === H E A D E R S ======================================================= */
32 #include "valuenode.h"
34 /* === M A C R O S ========================================================= */
36 /* === C L A S S E S & S T R U C T S ======================================= */
40 class ValueNode_Logarithm : public LinkableValueNode
42 ValueNode::RHandle link_;
43 ValueNode::RHandle epsilon_;
44 ValueNode::RHandle infinite_;
47 typedef etl::handle<ValueNode_Logarithm> Handle;
48 typedef etl::handle<const ValueNode_Logarithm> ConstHandle;
50 ValueNode_Logarithm(const ValueBase &x);
52 virtual ValueBase operator()(Time t)const;
54 virtual ~ValueNode_Logarithm();
56 virtual String get_name()const;
57 virtual String get_local_name()const;
60 virtual ValueNode::LooseHandle get_link_vfunc(int i)const;
61 virtual int link_count()const;
62 virtual String link_name(int i)const;
64 virtual String link_local_name(int i)const;
65 virtual int get_link_index_from_name(const String &name)const;
68 LinkableValueNode* create_new()const;
69 virtual bool set_link_vfunc(int i,ValueNode::Handle x);
72 using synfig::LinkableValueNode::get_link_vfunc;
74 using synfig::LinkableValueNode::set_link_vfunc;
75 static bool check_type(ValueBase::Type type);
76 static ValueNode_Logarithm* create(const ValueBase &x);
77 }; // END of class ValueNode_Logarithm
79 }; // END of namespace synfig
81 /* === E N D =============================================================== */