+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_timeloop.cpp
+** \brief Implementation of the "Time Loop" valuenode conversion.
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 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
+** 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_timeloop.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_TimeLoop::ValueNode_TimeLoop(const ValueBase::Type &x):
+ LinkableValueNode(x)
+{
+}
+
+ValueNode_TimeLoop::ValueNode_TimeLoop(const ValueNode::Handle &x):
+ LinkableValueNode(x->get_type())
+{
+ set_link("link", x);
+ set_link("link_time", ValueNode_Const::create(Time(0)));
+ set_link("local_time", ValueNode_Const::create(Time(1)));
+ set_link("duration", ValueNode_Const::create(Time(0)));
+}
+
+ValueNode_TimeLoop*
+ValueNode_TimeLoop::create(const ValueBase &x)
+{
+ return new ValueNode_TimeLoop(ValueNode_Const::create(x));
+}
+
+LinkableValueNode*
+ValueNode_TimeLoop::create_new()const
+{
+ return new ValueNode_TimeLoop(get_type());
+}
+
+ValueNode_TimeLoop::~ValueNode_TimeLoop()
+{
+ unlink_all();
+}
+
+bool
+ValueNode_TimeLoop::set_link_vfunc(int i,ValueNode::Handle x)
+{
+ assert(i >= 0 && i < link_count());
+ switch(i)
+ {
+ case 0: link_ = x; break;
+ case 1: link_time_ = x; break;
+ case 2: local_time_ = x; break;
+ case 3: duration_ = x; break;
+ default: return false;
+ }
+
+ signal_child_changed()(i);
+ signal_value_changed()();
+ return true;
+}
+
+ValueNode::LooseHandle
+ValueNode_TimeLoop::get_link_vfunc(int i)const
+{
+ assert(i >= 0 && i < link_count());
+ if(i==0) return link_;
+ if(i==1) return link_time_;
+ if(i==2) return local_time_;
+ if(i==3) return duration_;
+
+ return 0;
+}
+
+int
+ValueNode_TimeLoop::link_count()const
+{
+ return 4;
+}
+
+String
+ValueNode_TimeLoop::link_local_name(int i)const
+{
+ assert(i >= 0 && i < link_count());
+ if(i==0) return _("Link");
+ if(i==1) return _("Link Time");
+ if(i==2) return _("Local Time");
+ if(i==3) return _("Duration");
+ return String();
+}
+
+String
+ValueNode_TimeLoop::link_name(int i)const
+{
+ assert(i >= 0 && i < link_count());
+ if(i==0) return "link";
+ if(i==1) return "link_time";
+ if(i==2) return "local_time";
+ if(i==3) return "duration";
+ return String();
+}
+
+int
+ValueNode_TimeLoop::get_link_index_from_name(const String &name)const
+{
+ if(name=="link") return 0;
+ if(name=="link_time") return 1;
+ if(name=="local_time") return 2;
+ if(name=="duration") return 3;
+
+ throw Exception::BadLinkName(name);
+}
+
+ValueBase
+ValueNode_TimeLoop::operator()(Time t)const
+{
+ Time link_time = (*link_time_) (t).get(Time());
+ Time local_time = (*local_time_)(t).get(Time());
+ Time duration = (*duration_) (t).get(Time());
+
+ if (duration == 0)
+ t = link_time;
+ else if (duration > 0)
+ {
+ t -= local_time;
+ t -= floor(t / duration) * duration;
+ t = link_time + t;
+ }
+ else
+ {
+ t -= local_time;
+ t -= floor(t / duration) * duration;
+ t = link_time + duration - t;
+ }
+
+ return (*link_)(t);
+}
+
+String
+ValueNode_TimeLoop::get_name()const
+{
+ return "timeloop";
+}
+
+String
+ValueNode_TimeLoop::get_local_name()const
+{
+ return _("Time Loop");
+}
+
+bool
+ValueNode_TimeLoop::check_type(ValueBase::Type type)
+{
+ if(type)
+ return true;
+ return false;
+}