--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_step.cpp
+** \brief Implementation of the "Step" valuenode conversion.
+**
+** $Id$
+**
+** \legal
+** 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
+** 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_step.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_Step::ValueNode_Step(const ValueBase &value):
+ LinkableValueNode(value.get_type())
+{
+ set_link("width",ValueNode_Const::create(Time(1)));
+ set_link("time",ValueNode_Const::create(Time(0)));
+
+ switch(get_type())
+ {
+ case ValueBase::TYPE_ANGLE:
+ set_link("height",ValueNode_Const::create(Angle::deg(0)));
+ set_link("value",ValueNode_Const::create(value.get(Angle())));
+ break;
+ case ValueBase::TYPE_COLOR:
+ set_link("height",ValueNode_Const::create(Color(0,0,0,0)));
+ set_link("value",ValueNode_Const::create(value.get(Color())));
+ break;
+ case ValueBase::TYPE_INTEGER:
+ set_link("height",ValueNode_Const::create(int(0)));
+ set_link("value",ValueNode_Const::create(value.get(int())));
+ break;
+ case ValueBase::TYPE_REAL:
+ set_link("height",ValueNode_Const::create(Real(0)));
+ set_link("value",ValueNode_Const::create(value.get(Real())));
+ break;
+ case ValueBase::TYPE_TIME:
+ set_link("height",ValueNode_Const::create(Time(0)));
+ set_link("value",ValueNode_Const::create(value.get(Time())));
+ break;
+ case ValueBase::TYPE_VECTOR:
+ set_link("height",ValueNode_Const::create(Vector(0,0)));
+ set_link("value",ValueNode_Const::create(value.get(Vector())));
+ break;
+ default:
+ throw Exception::BadType(ValueBase::type_local_name(get_type()));
+ }
+
+ DCAST_HACK_ENABLE();
+}
+
+LinkableValueNode*
+ValueNode_Step::create_new()const
+{
+ return new ValueNode_Step(get_type());
+}
+
+ValueNode_Step*
+ValueNode_Step::create(const ValueBase &x)
+{
+ return new ValueNode_Step(x);
+}
+
+ValueNode_Step::~ValueNode_Step()
+{
+ unlink_all();
+}
+
+ValueBase
+ValueNode_Step::operator()(Time t)const
+{
+ int step = floor((t - ((*time_)(t).get(Time()))) /
+ ((*width_)(t).get(Time())));
+
+ switch(get_type())
+ {
+ case ValueBase::TYPE_ANGLE: return (*value_)(t).get( Angle()) + (*height_)(t).get( Angle())*step;
+ case ValueBase::TYPE_COLOR: return (*value_)(t).get( Color()) + (*height_)(t).get( Color())*step;
+ case ValueBase::TYPE_INTEGER: return (*value_)(t).get( int()) + (*height_)(t).get( int())*step;
+ case ValueBase::TYPE_REAL: return (*value_)(t).get( Real()) + (*height_)(t).get( Real())*step;
+ case ValueBase::TYPE_TIME: return (*value_)(t).get( Time()) + (*height_)(t).get( Time())*step;
+ case ValueBase::TYPE_VECTOR: return (*value_)(t).get(Vector()) + (*height_)(t).get(Vector())*step;
+ default:
+ assert(0);
+ return ValueBase();
+ }
+}
+
+
+String
+ValueNode_Step::get_name()const
+{
+ return "step";
+}
+
+String
+ValueNode_Step::get_local_name()const
+{
+ return _("Step");
+}
+
+bool
+ValueNode_Step::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_Step::set_link_vfunc(int i,ValueNode::Handle value)
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: CHECK_TYPE_AND_SET_VALUE(width_, ValueBase::TYPE_TIME);
+ case 1: CHECK_TYPE_AND_SET_VALUE(height_, get_type());
+ case 2: CHECK_TYPE_AND_SET_VALUE(time_, ValueBase::TYPE_TIME);
+ case 3: CHECK_TYPE_AND_SET_VALUE(value_, get_type());
+ }
+ return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Step::get_link_vfunc(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: return width_;
+ case 1: return height_;
+ case 2: return time_;
+ case 3: return value_;
+ default:
+ return 0;
+ }
+}
+
+int
+ValueNode_Step::link_count()const
+{
+ return 4;
+}
+
+String
+ValueNode_Step::link_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: return "width";
+ case 1: return "height";
+ case 2: return "time";
+ case 3: return "value";
+ default:
+ return String();
+ }
+}
+
+String
+ValueNode_Step::link_local_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: return _("Width");
+ case 1: return _("Height");
+ case 2: return _("Time");
+ case 3: return _("Value");
+ default:
+ return String();
+ }
+}
+
+int
+ValueNode_Step::get_link_index_from_name(const String &name)const
+{
+ if(name=="width") return 0;
+ if(name=="height") return 1;
+ if(name=="time") return 2;
+ if(name=="value") return 3;
+
+ throw Exception::BadLinkName(name);
+}
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