1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_compare.cpp
3 ** \brief Implementation of the "Compare" valuenode conversion.
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007, 2008 Chris Moore
10 ** Copyright (c) 2009 Nikita Kitaev
12 ** This package is free software; you can redistribute it and/or
13 ** modify it under the terms of the GNU General Public License as
14 ** published by the Free Software Foundation; either version 2 of
15 ** the License, or (at your option) any later version.
17 ** This package is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ** General Public License for more details.
23 /* ========================================================================= */
25 /* === H E A D E R S ======================================================= */
34 #include "valuenode_compare.h"
35 #include "valuenode_const.h"
40 /* === U S I N G =========================================================== */
44 using namespace synfig;
46 /* === M A C R O S ========================================================= */
48 /* === G L O B A L S ======================================================= */
50 /* === P R O C E D U R E S ================================================= */
52 /* === M E T H O D S ======================================================= */
54 ValueNode_Compare::ValueNode_Compare(const ValueBase &x):
55 LinkableValueNode(x.get_type())
57 bool value(x.get(bool()));
59 set_link("lhs", ValueNode_Const::create(Real(0)));
60 set_link("rhs", ValueNode_Const::create(Real(0)));
61 set_link("greater", ValueNode_Const::create(bool(false)));
63 set_link("equal",ValueNode_Const::create(bool(true)));
65 set_link("equal",ValueNode_Const::create(bool(false)));
66 set_link("less", ValueNode_Const::create(bool(false)));
70 ValueNode_Compare::create(const ValueBase &x)
72 return new ValueNode_Compare(x);
76 ValueNode_Compare::create_new()const
78 return new ValueNode_Compare(get_type());
81 ValueNode_Compare::~ValueNode_Compare()
87 ValueNode_Compare::set_link_vfunc(int i,ValueNode::Handle value)
89 assert(i>=0 && i<link_count());
93 case 0: CHECK_TYPE_AND_SET_VALUE(lhs_, ValueBase::TYPE_REAL);
94 case 1: CHECK_TYPE_AND_SET_VALUE(rhs_, ValueBase::TYPE_REAL);
95 case 2: CHECK_TYPE_AND_SET_VALUE(greater_, ValueBase::TYPE_BOOL);
96 case 3: CHECK_TYPE_AND_SET_VALUE(equal_, ValueBase::TYPE_BOOL);
97 case 4: CHECK_TYPE_AND_SET_VALUE(less_, ValueBase::TYPE_BOOL);
102 ValueNode::LooseHandle
103 ValueNode_Compare::get_link_vfunc(int i)const
105 assert(i>=0 && i<link_count());
107 if(i==0) return lhs_;
108 if(i==1) return rhs_;
109 if(i==2) return greater_;
110 if(i==3) return equal_;
111 if(i==4) return less_;
116 ValueNode_Compare::link_count()const
122 ValueNode_Compare::link_local_name(int i)const
124 assert(i>=0 && i<link_count());
126 if(i==0) return _("LHS");
127 if(i==1) return _("RHS");
128 if(i==2) return _("Greater Than");
129 if(i==3) return _("Equal to");
130 if(i==4) return _("Less Than");
135 ValueNode_Compare::link_name(int i)const
137 assert(i>=0 && i<link_count());
139 if(i==0) return "lhs";
140 if(i==1) return "rhs";
141 if(i==2) return "greater";
142 if(i==3) return "equal";
143 if(i==4) return "less";
148 ValueNode_Compare::get_link_index_from_name(const String &name)const
150 if(name=="lhs") return 0;
151 if(name=="rhs") return 1;
152 if(name=="greater") return 2;
153 if(name=="equal") return 3;
154 if(name=="less") return 4;
156 throw Exception::BadLinkName(name);
160 ValueNode_Compare::operator()(Time t)const
162 if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
163 printf("%s:%d operator()\n", __FILE__, __LINE__);
165 Real lhs = (*lhs_) (t).get(Real());
166 Real rhs = (*rhs_) (t).get(Real());
167 Real greater = (*greater_) (t).get(bool());
168 Real equal = (*equal_) (t).get(bool());
169 Real less = (*less_) (t).get(bool());
171 if (greater && lhs > rhs)
173 if (equal && lhs == rhs)
175 if (less && lhs < rhs)
182 ValueNode_Compare::get_name()const
188 ValueNode_Compare::get_local_name()const
194 ValueNode_Compare::check_type(ValueBase::Type type)
196 return type==ValueBase::TYPE_BOOL;