+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_exp.cpp
+** \brief Template File
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "valuenode_exp.h"
+#include "valuenode_const.h"
+#include "general.h"
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+ValueNode_Exp::ValueNode_Exp(const ValueBase &value):
+ LinkableValueNode(value.get_type())
+{
+ switch(value.get_type())
+ {
+ case ValueBase::TYPE_REAL:
+ set_link("exp",ValueNode_Const::create(Real(1)));
+ set_link("scale",ValueNode_Const::create(value.get(Real())));
+ break;
+ default:
+ throw Exception::BadType(ValueBase::type_name(value.get_type()));
+ }
+
+ DCAST_HACK_ENABLE();
+}
+
+LinkableValueNode*
+ValueNode_Exp::create_new()const
+{
+ return new ValueNode_Exp(get_type());
+}
+
+ValueNode_Exp*
+ValueNode_Exp::create(const ValueBase &x)
+{
+ return new ValueNode_Exp(x);
+}
+
+ValueNode_Exp::~ValueNode_Exp()
+{
+ unlink_all();
+}
+
+ValueBase
+ValueNode_Exp::operator()(Time t)const
+{
+ return (exp((*exp_)(t).get(Real())) *
+ (*scale_)(t).get(Real()));
+}
+
+String
+ValueNode_Exp::get_name()const
+{
+ return "exp";
+}
+
+String
+ValueNode_Exp::get_local_name()const
+{
+ return _("Exponential");
+}
+
+bool
+ValueNode_Exp::set_link_vfunc(int i,ValueNode::Handle x)
+{
+ assert(i==0 || i==1);
+ if(i==0)
+ {
+ exp_=x;
+ signal_child_changed()(i);signal_value_changed()();
+ return true;
+ }
+ if(i==1)
+ {
+ scale_=x;
+ signal_child_changed()(i);signal_value_changed()();
+ return true;
+ }
+ return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Exp::get_link_vfunc(int i)const
+{
+ assert(i==0 || i==1);
+ if(i==0)
+ return exp_;
+ if(i==1)
+ return scale_;
+
+ return 0;
+}
+
+int
+ValueNode_Exp::link_count()const
+{
+ return 2;
+}
+
+String
+ValueNode_Exp::link_name(int i)const
+{
+ assert(i==0 || i==1);
+ if(i==0)
+ return "exp";
+ if(i==1)
+ return "scale";
+ return String();
+}
+
+String
+ValueNode_Exp::link_local_name(int i)const
+{
+ assert(i==0 || i==1);
+ if(i==0)
+ return _("Exponent");
+ if(i==1)
+ return _("Scale");
+ return String();
+}
+
+int
+ValueNode_Exp::get_link_index_from_name(const String &name)const
+{
+ if(name=="exp")
+ return 0;
+ if(name=="scale")
+ return 1;
+
+ throw Exception::BadLinkName(name);
+}
+
+bool
+ValueNode_Exp::check_type(ValueBase::Type type)
+{
+ return type==ValueBase::TYPE_REAL;
+}