1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_timedswap.cpp
3 ** \brief Template File
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007 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_name(get_type()));
89 set_link("time",ValueNode_Const::create(Time(2)));
90 set_link("length",ValueNode_Const::create(Time(1)));
96 ValueNode_TimedSwap::create(const ValueBase& x)
98 return new ValueNode_TimedSwap(x);
103 ValueNode_TimedSwap::create_new()const
105 return new ValueNode_TimedSwap(get_type());
109 synfig::ValueNode_TimedSwap::~ValueNode_TimedSwap()
117 ValueNode_TimedSwap::set_before(const ValueNode::Handle &x)
119 if(!x || x->get_type()!=get_type()
120 && !PlaceholderValueNode::Handle::cast_dynamic(x))
129 ValueNode_TimedSwap::get_before()const
136 ValueNode_TimedSwap::set_after(const ValueNode::Handle &x)
138 if(!x || x->get_type()!=get_type()
139 && !PlaceholderValueNode::Handle::cast_dynamic(x))
148 ValueNode_TimedSwap::get_after()const
155 ValueNode_TimedSwap::set_swap_time(const ValueNode::Handle &x)
157 if(!x || (!ValueBase(x->get_type()).same_type_as(ValueBase::TYPE_TIME) &&
158 !PlaceholderValueNode::Handle::cast_dynamic(x)))
166 ValueNode_TimedSwap::get_swap_time()const
172 ValueNode_TimedSwap::set_swap_length(const ValueNode::Handle &x)
174 if(!x || (!ValueBase(x->get_type()).same_type_as(ValueBase::TYPE_TIME) &&
175 !PlaceholderValueNode::Handle::cast_dynamic(x)))
183 ValueNode_TimedSwap::get_swap_length()const
191 synfig::ValueNode_TimedSwap::operator()(Time t)const
193 Time swptime=(*swap_time)(t).get(Time());
194 Time swplength=(*swap_length)(t).get(Time());
199 if(t<=swptime && t>swptime-swplength)
201 Real amount=(swptime-t)/swplength;
202 // if amount==0.0, then we are after
203 // if amount==1.0, then we are before
207 case ValueBase::TYPE_ANGLE:
209 Angle a=(*after)(t).get(Angle());
210 Angle b=(*before)(t).get(Angle());
211 return (b-a)*amount+a;
213 case ValueBase::TYPE_COLOR:
215 Color a=(*after)(t).get(Color());
216 Color b=(*before)(t).get(Color());
217 // note: Shouldn't this use a straight blend?
218 return (b-a)*amount+a;
220 case ValueBase::TYPE_INTEGER:
222 float a=(float)(*after)(t).get(int());
223 float b=(float)(*before)(t).get(int());
224 return round_to_int((b-a)*amount+a);
226 case ValueBase::TYPE_REAL:
228 Real a=(*after)(t).get(Real());
229 Real b=(*before)(t).get(Real());
230 return (b-a)*amount+a;
232 case ValueBase::TYPE_TIME:
234 Time a=(*after)(t).get(Time());
235 Time b=(*before)(t).get(Time());
236 return (b-a)*amount+a;
238 case ValueBase::TYPE_VECTOR:
240 Vector a=(*after)(t).get(Vector());
241 Vector b=(*before)(t).get(Vector());
242 return (b-a)*amount+a;
250 /*! \todo this should interpolate from
251 ** before to after over the period defined
259 ValueNode_TimedSwap::set_link_vfunc(int i,ValueNode::Handle x)
264 case 0: return set_before(x);
265 case 1: return set_after(x);
266 case 2: return set_swap_time(x);
267 case 3: return set_swap_length(x);
272 ValueNode::LooseHandle
273 ValueNode_TimedSwap::get_link_vfunc(int i)const
278 case 0: return get_before();
279 case 1: return get_after();
280 case 2: return get_swap_time();
281 case 3: return get_swap_length();
287 ValueNode_TimedSwap::link_count()const
293 ValueNode_TimedSwap::link_local_name(int i)const
298 case 0: return _("Before");
299 case 1: return _("After");
300 case 2: return _("Swap Time");
301 case 3: return _("Swap Duration");
302 default:return String();
307 ValueNode_TimedSwap::link_name(int i)const
312 case 0: return "before";
313 case 1: return "after";
314 case 2: return "time";
315 case 3: return "length";
316 default:return String();
321 ValueNode_TimedSwap::get_link_index_from_name(const String &name)const
323 if(name=="before") return 0;
324 if(name=="after") return 1;
325 if(name=="time") return 2;
326 if(name=="length") return 3;
328 throw Exception::BadLinkName(name);
332 ValueNode_TimedSwap::get_name()const
338 ValueNode_TimedSwap::get_local_name()const
340 return _("Timed Swap");
344 ValueNode_TimedSwap::check_type(ValueBase::Type type)
347 type==ValueBase::TYPE_ANGLE ||
348 type==ValueBase::TYPE_COLOR ||
349 type==ValueBase::TYPE_INTEGER ||
350 type==ValueBase::TYPE_REAL ||
351 type==ValueBase::TYPE_TIME ||
352 type==ValueBase::TYPE_VECTOR;