1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_random.cpp
3 ** \brief Template File
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 ======================================================= */
33 #include "valuenode_random.h"
34 #include "synfig/valuenode_const.h"
35 #include "synfig/general.h"
36 #include "synfig/color.h"
41 /* === U S I N G =========================================================== */
45 using namespace synfig;
47 /* === M A C R O S ========================================================= */
49 /* === G L O B A L S ======================================================= */
51 /* === P R O C E D U R E S ================================================= */
53 /* === M E T H O D S ======================================================= */
55 ValueNode_Random::ValueNode_Random(const ValueBase &value):
56 LinkableValueNode(value.get_type())
58 random.set_seed(time(NULL));
60 set_link("radius",ValueNode_Const::create(Real(1)));
61 set_link("seed",ValueNode_Const::create(random.get_seed()));
62 set_link("speed",ValueNode_Const::create(Real(1)));
63 set_link("smooth",ValueNode_Const::create(int(RandomNoise::SMOOTH_CUBIC)));
64 set_link("loop",ValueNode_Const::create(Real(0)));
68 case ValueBase::TYPE_ANGLE:
69 set_link("link",ValueNode_Const::create(value.get(Angle())));
71 case ValueBase::TYPE_BOOL:
72 set_link("link",ValueNode_Const::create(value.get(bool())));
74 case ValueBase::TYPE_COLOR:
75 set_link("link",ValueNode_Const::create(value.get(Color())));
77 case ValueBase::TYPE_INTEGER:
78 set_link("link",ValueNode_Const::create(value.get(int())));
80 case ValueBase::TYPE_REAL:
81 set_link("link",ValueNode_Const::create(value.get(Real())));
83 case ValueBase::TYPE_TIME:
84 set_link("link",ValueNode_Const::create(value.get(Time())));
86 case ValueBase::TYPE_VECTOR:
87 set_link("link",ValueNode_Const::create(value.get(Vector())));
90 throw Exception::BadType(ValueBase::type_local_name(get_type()));
95 ValueNode_Random::create_new()const
97 return new ValueNode_Random(get_type());
101 ValueNode_Random::create(const ValueBase &x)
103 return new ValueNode_Random(x);
106 ValueNode_Random::~ValueNode_Random()
112 ValueNode_Random::operator()(Time t)const
114 typedef const RandomNoise::SmoothType Smooth;
116 Real radius = (*radius_)(t).get(Real());
117 int seed = (*seed_)(t).get(int());
118 int smooth = (*smooth_)(t).get(int());
119 float speed = (*speed_ )(t).get(Real());
120 int loop = int((((*loop_ )(t).get(Real())) * speed) + 0.5);
123 random.set_seed(seed);
127 case ValueBase::TYPE_ANGLE:
128 return ((*link_)(t).get( Angle()) +
129 Angle::deg(random(Smooth(smooth), 0, 0, 0, speed, loop) * radius));
131 case ValueBase::TYPE_BOOL:
132 return round_to_int((*link_)(t).get( bool()) +
133 random(Smooth(smooth), 0, 0, 0, speed, loop) * radius) > 0;
135 case ValueBase::TYPE_COLOR:
136 return (((*link_)(t).get( Color()) +
137 Color(random(Smooth(smooth), 0, 0, 0, speed, loop),
138 random(Smooth(smooth), 1, 0, 0, speed, loop),
139 random(Smooth(smooth), 2, 0, 0, speed, loop), 0) * radius).clamped());
141 case ValueBase::TYPE_INTEGER:
142 return round_to_int((*link_)(t).get( int()) +
143 random(Smooth(smooth), 0, 0, 0, speed, loop) * radius);
145 case ValueBase::TYPE_REAL:
146 return ((*link_)(t).get( Real()) +
147 random(Smooth(smooth), 0, 0, 0, speed, loop) * radius);
149 case ValueBase::TYPE_TIME:
150 return ((*link_)(t).get( Time()) +
151 random(Smooth(smooth), 0, 0, 0, speed, loop) * radius);
153 case ValueBase::TYPE_VECTOR:
155 float length(random(Smooth(smooth), 0, 0, 0, speed, loop) * radius);
156 Angle::rad angle(random(Smooth(smooth), 1, 0, 0, speed, loop) * PI);
158 return ((*link_)(t).get(Vector()) +
159 Vector(Angle::cos(angle).get(), Angle::sin(angle).get()) * length);
172 ValueNode_Random::get_name()const
178 ValueNode_Random::get_local_name()const
184 ValueNode_Random::set_link_vfunc(int i,ValueNode::Handle value)
186 assert(i>=0 && i<link_count());
190 case 0: CHECK_TYPE_AND_SET_VALUE(link_, get_type());
191 case 1: CHECK_TYPE_AND_SET_VALUE(radius_, ValueBase::TYPE_REAL);
192 case 2: CHECK_TYPE_AND_SET_VALUE(seed_, ValueBase::TYPE_INTEGER);
193 case 3: CHECK_TYPE_AND_SET_VALUE(speed_, ValueBase::TYPE_REAL);
194 case 4: CHECK_TYPE_AND_SET_VALUE(smooth_, ValueBase::TYPE_INTEGER);
195 case 5: CHECK_TYPE_AND_SET_VALUE(loop_, ValueBase::TYPE_REAL);
200 ValueNode::LooseHandle
201 ValueNode_Random::get_link_vfunc(int i)const
203 assert(i>=0 && i<link_count());
207 case 0: return link_;
208 case 1: return radius_;
209 case 2: return seed_;
210 case 3: return speed_;
211 case 4: return smooth_;
212 case 5: return loop_;
218 ValueNode_Random::link_count()const
224 ValueNode_Random::link_name(int i)const
226 assert(i>=0 && i<link_count());
230 case 0: return "link";
231 case 1: return "radius";
232 case 2: return "seed";
233 case 3: return "speed";
234 case 4: return "smooth";
235 case 5: return "loop";
241 ValueNode_Random::link_local_name(int i)const
243 assert(i>=0 && i<link_count());
247 case 0: return _("Link");
248 case 1: return _("Radius");
249 case 2: return _("Seed");
250 case 3: return _("Animation Speed");
251 case 4: return _("Interpolation");
252 case 5: return _("Loop Time");
258 ValueNode_Random::get_link_index_from_name(const String &name)const
260 if(name=="link" ) return 0;
261 if(name=="radius") return 1;
262 if(name=="seed" ) return 2;
263 if(name=="speed" ) return 3;
264 if(name=="smooth") return 4;
265 if(name=="loop" ) return 5;
266 throw Exception::BadLinkName(name);
270 ValueNode_Random::check_type(ValueBase::Type type)
273 type==ValueBase::TYPE_ANGLE ||
274 type==ValueBase::TYPE_BOOL ||
275 type==ValueBase::TYPE_COLOR ||
276 type==ValueBase::TYPE_INTEGER ||
277 type==ValueBase::TYPE_REAL ||
278 type==ValueBase::TYPE_TIME ||
279 type==ValueBase::TYPE_VECTOR ;
283 ValueNode_Random::clone(const GUID& deriv_guid)const
285 ValueNode_Random* ret = (ValueNode_Random*)LinkableValueNode::clone(deriv_guid);
286 ret->randomize_seed();
291 ValueNode_Random::randomize_seed()
293 int i = get_link_index_from_name("seed");
294 ValueNode::Handle link = get_link_vfunc(i);
295 if(!link->is_exported() && link->get_name() == "constant")
297 int seed = time(NULL) + rand();
298 if (seed < 0) seed = -seed;
299 random.set_seed(seed);
300 set_link(i, ValueNode_Const::create(seed));