--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_linear.cpp
+** \brief Implementation of the "Linear" valuenode conversion.
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 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
+** 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_linear.h"
+#include "valuenode_const.h"
+#include "general.h"
+#include "color.h"
+#include <ETL/misc>
+
+#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_Linear::ValueNode_Linear(const ValueBase &value):
+ LinkableValueNode(value.get_type())
+{
+ switch(get_type())
+ {
+ case ValueBase::TYPE_ANGLE:
+ set_link("slope",ValueNode_Const::create(Angle::deg(0)));
+ set_link("offset",ValueNode_Const::create(value.get(Angle())));
+ break;
+ case ValueBase::TYPE_COLOR:
+ set_link("slope",ValueNode_Const::create(Color(0,0,0,0)));
+ set_link("offset",ValueNode_Const::create(value.get(Color())));
+ break;
+ case ValueBase::TYPE_INTEGER:
+ set_link("slope",ValueNode_Const::create(int(0)));
+ set_link("offset",ValueNode_Const::create(value.get(int())));
+ break;
+ case ValueBase::TYPE_REAL:
+ set_link("slope",ValueNode_Const::create(Real(0)));
+ set_link("offset",ValueNode_Const::create(value.get(Real())));
+ break;
+ case ValueBase::TYPE_TIME:
+ set_link("slope",ValueNode_Const::create(Time(0)));
+ set_link("offset",ValueNode_Const::create(value.get(Time())));
+ break;
+ case ValueBase::TYPE_VECTOR:
+ set_link("slope",ValueNode_Const::create(Vector(0,0)));
+ set_link("offset",ValueNode_Const::create(value.get(Vector())));
+ break;
+ default:
+ throw Exception::BadType(ValueBase::type_local_name(get_type()));
+ }
+
+ DCAST_HACK_ENABLE();
+}
+
+LinkableValueNode*
+ValueNode_Linear::create_new()const
+{
+ return new ValueNode_Linear(get_type());
+}
+
+ValueNode_Linear*
+ValueNode_Linear::create(const ValueBase &x)
+{
+ return new ValueNode_Linear(x);
+}
+
+ValueNode_Linear::~ValueNode_Linear()
+{
+ unlink_all();
+}
+
+ValueBase
+ValueNode_Linear::operator()(Time t)const
+{
+ if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
+ printf("%s:%d operator()\n", __FILE__, __LINE__);
+
+ switch(get_type())
+ {
+ case ValueBase::TYPE_ANGLE:
+ return (*m_)(t).get( Angle())*t+(*b_)(t).get( Angle());
+ case ValueBase::TYPE_COLOR:
+ return (*m_)(t).get( Color())*t+(*b_)(t).get( Color());
+ case ValueBase::TYPE_INTEGER:
+ return round_to_int((*m_)(t).get(int())*t+(*b_)(t).get(int()));
+ case ValueBase::TYPE_REAL:
+ return (*m_)(t).get( Real())*t+(*b_)(t).get( Real());
+ case ValueBase::TYPE_TIME:
+ return (*m_)(t).get( Time())*t+(*b_)(t).get( Time());
+ case ValueBase::TYPE_VECTOR:
+ return (*m_)(t).get(Vector())*t+(*b_)(t).get(Vector());
+ default:
+ assert(0);
+ break;
+ }
+ return ValueBase();
+}
+
+
+String
+ValueNode_Linear::get_name()const
+{
+ return "linear";
+}
+
+String
+ValueNode_Linear::get_local_name()const
+{
+ return _("Linear");
+}
+
+bool
+ValueNode_Linear::check_type(ValueBase::Type type)
+{
+ return
+ type==ValueBase::TYPE_ANGLE ||
+ type==ValueBase::TYPE_COLOR ||
+ type==ValueBase::TYPE_INTEGER ||
+ type==ValueBase::TYPE_REAL ||
+ type==ValueBase::TYPE_TIME ||
+ type==ValueBase::TYPE_VECTOR ;
+}
+
+bool
+ValueNode_Linear::set_link_vfunc(int i,ValueNode::Handle value)
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: CHECK_TYPE_AND_SET_VALUE(m_, get_type());
+ case 1: CHECK_TYPE_AND_SET_VALUE(b_, get_type());
+ }
+ return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Linear::get_link_vfunc(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0) return m_;
+ if(i==1) return b_;
+ return 0;
+}
+
+int
+ValueNode_Linear::link_count()const
+{
+ return 2;
+}
+
+String
+ValueNode_Linear::link_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0) return "slope";
+ if(i==1) return "offset";
+ return String();
+}
+
+String
+ValueNode_Linear::link_local_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0)
+ switch(get_type())
+ {
+ case ValueBase::TYPE_ANGLE:
+ case ValueBase::TYPE_COLOR:
+ case ValueBase::TYPE_INTEGER:
+ case ValueBase::TYPE_REAL:
+ case ValueBase::TYPE_TIME:
+ return _("Rate");
+ case ValueBase::TYPE_VECTOR:
+ default:
+ return _("Slope");
+ }
+ if(i==1)
+ return _("Offset");
+ return String();
+}
+
+int
+ValueNode_Linear::get_link_index_from_name(const String &name)const
+{
+ if(name=="slope") return 0;
+ if(name=="offset") return 1;
+
+ throw Exception::BadLinkName(name);
+}
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