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())
59 Vocab ret(get_children_vocab());
60 set_children_vocab(ret);
63 case ValueBase::TYPE_ANGLE:
64 set_link("before",ValueNode_Const::create(value.get(Angle())));
65 set_link("after",ValueNode_Const::create(value.get(Angle())));
67 case ValueBase::TYPE_COLOR:
68 set_link("before",ValueNode_Const::create(value.get(Color())));
69 set_link("after",ValueNode_Const::create(value.get(Color())));
71 case ValueBase::TYPE_INTEGER:
72 set_link("before",ValueNode_Const::create(value.get(int())));
73 set_link("after",ValueNode_Const::create(value.get(int())));
75 case ValueBase::TYPE_REAL:
76 set_link("before",ValueNode_Const::create(value.get(Real())));
77 set_link("after",ValueNode_Const::create(value.get(Real())));
79 case ValueBase::TYPE_TIME:
80 set_link("before",ValueNode_Const::create(value.get(Time())));
81 set_link("after",ValueNode_Const::create(value.get(Time())));
83 case ValueBase::TYPE_VECTOR:
84 set_link("before",ValueNode_Const::create(value.get(Vector())));
85 set_link("after",ValueNode_Const::create(value.get(Vector())));
88 throw Exception::BadType(ValueBase::type_local_name(get_type()));
91 set_link("time",ValueNode_Const::create(Time(2)));
92 set_link("length",ValueNode_Const::create(Time(1)));
96 ValueNode_TimedSwap::create(const ValueBase& x)
98 return new ValueNode_TimedSwap(x);
102 ValueNode_TimedSwap::create_new()const
104 return new ValueNode_TimedSwap(get_type());
107 synfig::ValueNode_TimedSwap::~ValueNode_TimedSwap()
113 synfig::ValueNode_TimedSwap::operator()(Time t)const
115 if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
116 printf("%s:%d operator()\n", __FILE__, __LINE__);
118 Time swptime=(*swap_time)(t).get(Time());
119 Time swplength=(*swap_length)(t).get(Time());
124 if(t<=swptime && t>swptime-swplength)
126 Real amount=(swptime-t)/swplength;
127 // if amount==0.0, then we are after
128 // if amount==1.0, then we are before
132 case ValueBase::TYPE_ANGLE:
134 Angle a=(*after)(t).get(Angle());
135 Angle b=(*before)(t).get(Angle());
136 return (b-a)*amount+a;
138 case ValueBase::TYPE_COLOR:
140 Color a=(*after)(t).get(Color());
141 Color b=(*before)(t).get(Color());
142 // note: Shouldn't this use a straight blend?
143 return (b-a)*amount+a;
145 case ValueBase::TYPE_INTEGER:
147 float a=(float)(*after)(t).get(int());
148 float b=(float)(*before)(t).get(int());
149 return round_to_int((b-a)*amount+a);
151 case ValueBase::TYPE_REAL:
153 Real a=(*after)(t).get(Real());
154 Real b=(*before)(t).get(Real());
155 return (b-a)*amount+a;
157 case ValueBase::TYPE_TIME:
159 Time a=(*after)(t).get(Time());
160 Time b=(*before)(t).get(Time());
161 return (b-a)*amount+a;
163 case ValueBase::TYPE_VECTOR:
165 Vector a=(*after)(t).get(Vector());
166 Vector b=(*before)(t).get(Vector());
167 return (b-a)*amount+a;
174 /*! \todo this should interpolate from
175 ** before to after over the period defined
182 ValueNode_TimedSwap::set_link_vfunc(int i,ValueNode::Handle value)
184 assert(i>=0 && i<link_count());
188 case 0: CHECK_TYPE_AND_SET_VALUE(before, get_type());
189 case 1: CHECK_TYPE_AND_SET_VALUE(after, get_type());
190 case 2: CHECK_TYPE_AND_SET_VALUE(swap_time, ValueBase::TYPE_TIME);
191 case 3: CHECK_TYPE_AND_SET_VALUE(swap_length, ValueBase::TYPE_TIME);
196 ValueNode::LooseHandle
197 ValueNode_TimedSwap::get_link_vfunc(int i)const
199 assert(i>=0 && i<link_count());
203 case 0: return before;
204 case 1: return after;
205 case 2: return swap_time;
206 case 3: return swap_length;
212 ValueNode_TimedSwap::get_name()const
218 ValueNode_TimedSwap::get_local_name()const
220 return _("Timed Swap");
224 ValueNode_TimedSwap::check_type(ValueBase::Type type)
227 type==ValueBase::TYPE_ANGLE ||
228 type==ValueBase::TYPE_COLOR ||
229 type==ValueBase::TYPE_INTEGER ||
230 type==ValueBase::TYPE_REAL ||
231 type==ValueBase::TYPE_TIME ||
232 type==ValueBase::TYPE_VECTOR;
235 LinkableValueNode::Vocab
236 ValueNode_TimedSwap::get_children_vocab_vfunc()const
238 if(children_vocab.size())
239 return children_vocab;
241 LinkableValueNode::Vocab ret;
243 ret.push_back(ParamDesc(ValueBase(),"before")
244 .set_local_name(_("Before"))
245 .set_description(_("The value node returned when current time is before 'time' - 'length'"))
248 ret.push_back(ParamDesc(ValueBase(),"after")
249 .set_local_name(_("After"))
250 .set_description(_("The value node returned when current time is after 'time'"))
253 ret.push_back(ParamDesc(ValueBase(),"time")
254 .set_local_name(_("Time"))
255 .set_description(_("The time when the linear interpolation ends"))
258 ret.push_back(ParamDesc(ValueBase(),"length")
259 .set_local_name(_("Length"))
260 .set_description(_("The length of time when the linear interpolation between 'Before' and 'After' is made"))