--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_scale.cpp
+** \brief Implementation of the "Scale" 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 "general.h"
+#include "valuenode_scale.h"
+#include "valuenode_const.h"
+#include <stdexcept>
+#include "color.h"
+#include "vector.h"
+#include "time.h"
+#include "angle.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_Scale::ValueNode_Scale(const ValueBase &value):
+ LinkableValueNode(value.get_type())
+{
+ set_link("scalar",ValueNode::Handle(ValueNode_Const::create(Real(1.0))));
+ ValueBase::Type id(value.get_type());
+
+ switch(id)
+ {
+ case ValueBase::TYPE_ANGLE:
+ set_link("link",ValueNode_Const::create(value.get(Angle())));
+ break;
+ case ValueBase::TYPE_COLOR:
+ set_link("link",ValueNode_Const::create(value.get(Color())));
+ break;
+ case ValueBase::TYPE_INTEGER:
+ set_link("link",ValueNode_Const::create(value.get(int())));
+ break;
+ case ValueBase::TYPE_REAL:
+ set_link("link",ValueNode_Const::create(value.get(Real())));
+ break;
+ case ValueBase::TYPE_TIME:
+ set_link("link",ValueNode_Const::create(value.get(Time())));
+ break;
+ case ValueBase::TYPE_VECTOR:
+ set_link("link",ValueNode_Const::create(value.get(Vector())));
+ break;
+ default:
+ assert(0);
+ throw runtime_error(get_local_name()+_(":Bad type ")+ValueBase::type_local_name(id));
+ }
+
+ assert(value_node);
+ assert(value_node->get_type()==id);
+ assert(get_type()==id);
+}
+
+LinkableValueNode*
+ValueNode_Scale::create_new()const
+{
+ return new ValueNode_Scale(get_type());
+}
+
+ValueNode_Scale*
+ValueNode_Scale::create(const ValueBase& value)
+{
+ return new ValueNode_Scale(value);
+}
+
+synfig::ValueNode_Scale::~ValueNode_Scale()
+{
+ unlink_all();
+}
+
+synfig::ValueBase
+synfig::ValueNode_Scale::operator()(Time t)const
+{
+ if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
+ printf("%s:%d operator()\n", __FILE__, __LINE__);
+
+ if(!value_node || !scalar)
+ throw runtime_error(strprintf("ValueNode_Scale: %s",_("One or both of my parameters aren't set!")));
+ else if(get_type()==ValueBase::TYPE_ANGLE)
+ return (*value_node)(t).get(Angle())*(*scalar)(t).get(Real());
+ else if(get_type()==ValueBase::TYPE_COLOR)
+ {
+ Color ret((*value_node)(t).get(Color()));
+ Real s((*scalar)(t).get(Real()));
+ ret.set_r(ret.get_r()*s);
+ ret.set_g(ret.get_g()*s);
+ ret.set_b(ret.get_b()*s);
+ return ret;
+ }
+ else if(get_type()==ValueBase::TYPE_INTEGER)
+ return round_to_int((*value_node)(t).get(int())*(*scalar)(t).get(Real()));
+ else if(get_type()==ValueBase::TYPE_REAL)
+ return (*value_node)(t).get(Real())*(*scalar)(t).get(Real());
+ else if(get_type()==ValueBase::TYPE_TIME)
+ return (*value_node)(t).get(Time())*(*scalar)(t).get(Time());
+ else if(get_type()==ValueBase::TYPE_VECTOR)
+ return (*value_node)(t).get(Vector())*(*scalar)(t).get(Real());
+
+ assert(0);
+ return ValueBase();
+}
+
+synfig::ValueBase
+synfig::ValueNode_Scale::get_inverse(Time t, const synfig::Vector &target_value) const
+{
+ Real scalar_value((*scalar)(t).get(Real()));
+ if(scalar_value==0)
+ throw runtime_error(strprintf("ValueNode_Scale: %s",_("Attempting to get the inverse of a non invertible Valuenode")));
+ else
+ {
+ switch (get_type())
+ {
+ case ValueBase::TYPE_REAL:
+ return target_value.mag() / scalar_value;
+ case ValueBase::TYPE_ANGLE:
+ return Angle::tan(target_value[1] / scalar_value ,target_value[0] / scalar_value);
+ default:
+ return target_value / scalar_value;
+ }
+ }
+ return ValueBase();
+}
+
+synfig::ValueBase
+synfig::ValueNode_Scale::get_inverse(Time t, const synfig::Angle &target_value) const
+{
+ Real scalar_value((*scalar)(t).get(Real()));
+ if(scalar_value==0)
+ throw runtime_error(strprintf("ValueNode_Scale: %s",_("Attempting to get the inverse of a non invertible Valuenode")));
+ else
+ {
+ switch (get_type())
+ {
+ default:
+ return (*value_node)(t).get(Angle()) + target_value / scalar_value;
+ }
+ }
+ return ValueBase();
+}
+
+bool
+synfig::ValueNode_Scale::is_invertible(Time t) const
+{
+ Real scalar_value((*scalar)(t).get(Real()));
+ return (!scalar_value==0);
+}
+
+bool
+ValueNode_Scale::set_link_vfunc(int i,ValueNode::Handle value)
+{
+ assert(i>=0 && i<link_count());
+
+ switch(i)
+ {
+ case 0: CHECK_TYPE_AND_SET_VALUE(value_node, get_type());
+ case 1: CHECK_TYPE_AND_SET_VALUE(scalar, ValueBase::TYPE_REAL);
+ }
+ return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Scale::get_link_vfunc(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0)
+ return value_node;
+ else if(i==1)
+ return scalar;
+ return 0;
+}
+
+int
+ValueNode_Scale::link_count()const
+{
+ return 2;
+}
+
+String
+ValueNode_Scale::link_local_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0)
+ return _("Link");
+ else if(i==1)
+ return _("Scalar");
+ return String();
+}
+
+String
+ValueNode_Scale::link_name(int i)const
+{
+ assert(i>=0 && i<link_count());
+
+ if(i==0)
+ return "link";
+ else if(i==1)
+ return "scalar";
+ return String();
+}
+
+int
+ValueNode_Scale::get_link_index_from_name(const String &name)const
+{
+ if(name=="link")
+ return 0;
+ if(name=="scalar")
+ return 1;
+
+ throw Exception::BadLinkName(name);
+}
+
+String
+ValueNode_Scale::get_name()const
+{
+ return "scale";
+}
+
+String
+ValueNode_Scale::get_local_name()const
+{
+ return _("Scale");
+}
+
+bool
+ValueNode_Scale::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;
+}
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