1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_timedswap.cpp
3 ** \brief Implementation of the "Timed Swap" 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_timedswap.h"
35 #include "valuenode_const.h"
42 /* === U S I N G =========================================================== */
46 using namespace synfig;
48 /* === M A C R O S ========================================================= */
50 /* === G L O B A L S ======================================================= */
52 /* === P R O C E D U R E S ================================================= */
54 /* === M E T H O D S ======================================================= */
56 ValueNode_TimedSwap::ValueNode_TimedSwap(const ValueBase &value):
57 LinkableValueNode(value.get_type())
61 case ValueBase::TYPE_ANGLE:
62 set_link("before",ValueNode_Const::create(value.get(Angle())));
63 set_link("after",ValueNode_Const::create(value.get(Angle())));
65 case ValueBase::TYPE_COLOR:
66 set_link("before",ValueNode_Const::create(value.get(Color())));
67 set_link("after",ValueNode_Const::create(value.get(Color())));
69 case ValueBase::TYPE_INTEGER:
70 set_link("before",ValueNode_Const::create(value.get(int())));
71 set_link("after",ValueNode_Const::create(value.get(int())));
73 case ValueBase::TYPE_REAL:
74 set_link("before",ValueNode_Const::create(value.get(Real())));
75 set_link("after",ValueNode_Const::create(value.get(Real())));
77 case ValueBase::TYPE_TIME:
78 set_link("before",ValueNode_Const::create(value.get(Time())));
79 set_link("after",ValueNode_Const::create(value.get(Time())));
81 case ValueBase::TYPE_VECTOR:
82 set_link("before",ValueNode_Const::create(value.get(Vector())));
83 set_link("after",ValueNode_Const::create(value.get(Vector())));
86 throw Exception::BadType(ValueBase::type_local_name(get_type()));
89 set_link("time",ValueNode_Const::create(Time(2)));
90 set_link("length",ValueNode_Const::create(Time(1)));
94 ValueNode_TimedSwap::create(const ValueBase& x)
96 return new ValueNode_TimedSwap(x);
100 ValueNode_TimedSwap::create_new()const
102 return new ValueNode_TimedSwap(get_type());
105 synfig::ValueNode_TimedSwap::~ValueNode_TimedSwap()
111 synfig::ValueNode_TimedSwap::operator()(Time t)const
113 if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
114 printf("%s:%d operator()\n", __FILE__, __LINE__);
116 Time swptime=(*swap_time)(t).get(Time());
117 Time swplength=(*swap_length)(t).get(Time());
122 if(t<=swptime && t>swptime-swplength)
124 Real amount=(swptime-t)/swplength;
125 // if amount==0.0, then we are after
126 // if amount==1.0, then we are before
130 case ValueBase::TYPE_ANGLE:
132 Angle a=(*after)(t).get(Angle());
133 Angle b=(*before)(t).get(Angle());
134 return (b-a)*amount+a;
136 case ValueBase::TYPE_COLOR:
138 Color a=(*after)(t).get(Color());
139 Color b=(*before)(t).get(Color());
140 // note: Shouldn't this use a straight blend?
141 return (b-a)*amount+a;
143 case ValueBase::TYPE_INTEGER:
145 float a=(float)(*after)(t).get(int());
146 float b=(float)(*before)(t).get(int());
147 return round_to_int((b-a)*amount+a);
149 case ValueBase::TYPE_REAL:
151 Real a=(*after)(t).get(Real());
152 Real b=(*before)(t).get(Real());
153 return (b-a)*amount+a;
155 case ValueBase::TYPE_TIME:
157 Time a=(*after)(t).get(Time());
158 Time b=(*before)(t).get(Time());
159 return (b-a)*amount+a;
161 case ValueBase::TYPE_VECTOR:
163 Vector a=(*after)(t).get(Vector());
164 Vector b=(*before)(t).get(Vector());
165 return (b-a)*amount+a;
172 /*! \todo this should interpolate from
173 ** before to after over the period defined
180 ValueNode_TimedSwap::set_link_vfunc(int i,ValueNode::Handle value)
182 assert(i>=0 && i<link_count());
186 case 0: CHECK_TYPE_AND_SET_VALUE(before, get_type());
187 case 1: CHECK_TYPE_AND_SET_VALUE(after, get_type());
188 case 2: CHECK_TYPE_AND_SET_VALUE(swap_time, ValueBase::TYPE_TIME);
189 case 3: CHECK_TYPE_AND_SET_VALUE(swap_length, ValueBase::TYPE_TIME);
194 ValueNode::LooseHandle
195 ValueNode_TimedSwap::get_link_vfunc(int i)const
197 assert(i>=0 && i<link_count());
201 case 0: return before;
202 case 1: return after;
203 case 2: return swap_time;
204 case 3: return swap_length;
210 ValueNode_TimedSwap::link_count()const
216 ValueNode_TimedSwap::link_local_name(int i)const
218 assert(i>=0 && i<link_count());
222 case 0: return _("Before");
223 case 1: return _("After");
224 case 2: return _("Swap Time");
225 case 3: return _("Swap Duration");
226 default:return String();
231 ValueNode_TimedSwap::link_name(int i)const
233 assert(i>=0 && i<link_count());
237 case 0: return "before";
238 case 1: return "after";
239 case 2: return "time";
240 case 3: return "length";
241 default:return String();
246 ValueNode_TimedSwap::get_link_index_from_name(const String &name)const
248 if(name=="before") return 0;
249 if(name=="after") return 1;
250 if(name=="time") return 2;
251 if(name=="length") return 3;
253 throw Exception::BadLinkName(name);
257 ValueNode_TimedSwap::get_name()const
263 ValueNode_TimedSwap::get_local_name()const
265 return _("Timed Swap");
269 ValueNode_TimedSwap::check_type(ValueBase::Type type)
272 type==ValueBase::TYPE_ANGLE ||
273 type==ValueBase::TYPE_COLOR ||
274 type==ValueBase::TYPE_INTEGER ||
275 type==ValueBase::TYPE_REAL ||
276 type==ValueBase::TYPE_TIME ||
277 type==ValueBase::TYPE_VECTOR;