1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_scale.cpp
3 ** \brief Implementation of the "Scale" valuenode conversion.
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007, 2008 Chris Moore
11 ** This package is free software; you can redistribute it and/or
12 ** modify it under the terms of the GNU General Public License as
13 ** published by the Free Software Foundation; either version 2 of
14 ** the License, or (at your option) any later version.
16 ** This package is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ** General Public License for more details.
22 /* ========================================================================= */
24 /* === H E A D E R S ======================================================= */
34 #include "valuenode_scale.h"
35 #include "valuenode_const.h"
45 /* === U S I N G =========================================================== */
49 using namespace synfig;
51 /* === M A C R O S ========================================================= */
53 /* === G L O B A L S ======================================================= */
55 /* === P R O C E D U R E S ================================================= */
57 /* === M E T H O D S ======================================================= */
59 ValueNode_Scale::ValueNode_Scale(const ValueBase &value):
60 LinkableValueNode(value.get_type())
62 set_link("scalar",ValueNode::Handle(ValueNode_Const::create(Real(1.0))));
63 ValueBase::Type id(value.get_type());
67 case ValueBase::TYPE_ANGLE:
68 set_link("link",ValueNode_Const::create(value.get(Angle())));
70 case ValueBase::TYPE_COLOR:
71 set_link("link",ValueNode_Const::create(value.get(Color())));
73 case ValueBase::TYPE_INTEGER:
74 set_link("link",ValueNode_Const::create(value.get(int())));
76 case ValueBase::TYPE_REAL:
77 set_link("link",ValueNode_Const::create(value.get(Real())));
79 case ValueBase::TYPE_TIME:
80 set_link("link",ValueNode_Const::create(value.get(Time())));
82 case ValueBase::TYPE_VECTOR:
83 set_link("link",ValueNode_Const::create(value.get(Vector())));
87 throw runtime_error(get_local_name()+_(":Bad type ")+ValueBase::type_local_name(id));
91 assert(value_node->get_type()==id);
92 assert(get_type()==id);
96 ValueNode_Scale::create_new()const
98 return new ValueNode_Scale(get_type());
102 ValueNode_Scale::create(const ValueBase& value)
104 return new ValueNode_Scale(value);
107 synfig::ValueNode_Scale::~ValueNode_Scale()
113 synfig::ValueNode_Scale::operator()(Time t)const
115 if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
116 printf("%s:%d operator()\n", __FILE__, __LINE__);
118 if(!value_node || !scalar)
119 throw runtime_error(strprintf("ValueNode_Scale: %s",_("One or both of my parameters aren't set!")));
120 else if(get_type()==ValueBase::TYPE_ANGLE)
121 return (*value_node)(t).get(Angle())*(*scalar)(t).get(Real());
122 else if(get_type()==ValueBase::TYPE_COLOR)
124 Color ret((*value_node)(t).get(Color()));
125 Real s((*scalar)(t).get(Real()));
126 ret.set_r(ret.get_r()*s);
127 ret.set_g(ret.get_g()*s);
128 ret.set_b(ret.get_b()*s);
131 else if(get_type()==ValueBase::TYPE_INTEGER)
132 return round_to_int((*value_node)(t).get(int())*(*scalar)(t).get(Real()));
133 else if(get_type()==ValueBase::TYPE_REAL)
134 return (*value_node)(t).get(Real())*(*scalar)(t).get(Real());
135 else if(get_type()==ValueBase::TYPE_TIME)
136 return (*value_node)(t).get(Time())*(*scalar)(t).get(Time());
137 else if(get_type()==ValueBase::TYPE_VECTOR)
138 return (*value_node)(t).get(Vector())*(*scalar)(t).get(Real());
145 synfig::ValueNode_Scale::get_inverse(Time t, const synfig::Vector &target_value) const
147 Real scalar_value((*scalar)(t).get(Real()));
149 throw runtime_error(strprintf("ValueNode_Scale: %s",_("Attempting to get the inverse of a non invertible Valuenode")));
154 case ValueBase::TYPE_REAL:
155 return target_value.mag() / scalar_value;
156 case ValueBase::TYPE_ANGLE:
157 return Angle::tan(target_value[1] / scalar_value ,target_value[0] / scalar_value);
159 return target_value / scalar_value;
166 synfig::ValueNode_Scale::get_inverse(Time t, const synfig::Angle &target_value) const
168 Real scalar_value((*scalar)(t).get(Real()));
170 throw runtime_error(strprintf("ValueNode_Scale: %s",_("Attempting to get the inverse of a non invertible Valuenode")));
176 return (*value_node)(t).get(Angle()) + target_value / scalar_value;
183 synfig::ValueNode_Scale::is_invertible(Time t) const
185 Real scalar_value((*scalar)(t).get(Real()));
186 return (!scalar_value==0);
190 ValueNode_Scale::set_link_vfunc(int i,ValueNode::Handle value)
192 assert(i>=0 && i<link_count());
196 case 0: CHECK_TYPE_AND_SET_VALUE(value_node, get_type());
197 case 1: CHECK_TYPE_AND_SET_VALUE(scalar, ValueBase::TYPE_REAL);
202 ValueNode::LooseHandle
203 ValueNode_Scale::get_link_vfunc(int i)const
205 assert(i>=0 && i<link_count());
215 ValueNode_Scale::link_count()const
221 ValueNode_Scale::link_local_name(int i)const
223 assert(i>=0 && i<link_count());
233 ValueNode_Scale::link_name(int i)const
235 assert(i>=0 && i<link_count());
245 ValueNode_Scale::get_link_index_from_name(const String &name)const
252 throw Exception::BadLinkName(name);
256 ValueNode_Scale::get_name()const
262 ValueNode_Scale::get_local_name()const
268 ValueNode_Scale::check_type(ValueBase::Type type)
271 type==ValueBase::TYPE_ANGLE ||
272 type==ValueBase::TYPE_COLOR ||
273 type==ValueBase::TYPE_INTEGER ||
274 type==ValueBase::TYPE_REAL ||
275 type==ValueBase::TYPE_TIME ||
276 type==ValueBase::TYPE_VECTOR;