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(Random::SMOOTH_CUBIC)));
67 case ValueBase::TYPE_ANGLE:
68 set_link("link",ValueNode_Const::create(value.get(Angle())));
70 case ValueBase::TYPE_BOOL:
71 set_link("link",ValueNode_Const::create(value.get(bool())));
73 case ValueBase::TYPE_COLOR:
74 set_link("link",ValueNode_Const::create(value.get(Color())));
76 case ValueBase::TYPE_INTEGER:
77 set_link("link",ValueNode_Const::create(value.get(int())));
79 case ValueBase::TYPE_REAL:
80 set_link("link",ValueNode_Const::create(value.get(Real())));
82 case ValueBase::TYPE_TIME:
83 set_link("link",ValueNode_Const::create(value.get(Time())));
85 case ValueBase::TYPE_VECTOR:
86 set_link("link",ValueNode_Const::create(value.get(Vector())));
89 throw Exception::BadType(ValueBase::type_local_name(get_type()));
96 ValueNode_Random::create_new()const
98 return new ValueNode_Random(get_type());
102 ValueNode_Random::create(const ValueBase &x)
104 return new ValueNode_Random(x);
107 ValueNode_Random::~ValueNode_Random()
113 ValueNode_Random::operator()(Time t)const
115 typedef const Random::SmoothType Smooth;
117 Real radius = (*radius_)(t).get(Real());
118 int seed = (*seed_)(t).get(int());
119 int smooth = (*smooth_)(t).get(int());
120 float speed = (*speed_ )(t).get(Real()) * t;
122 random.set_seed(seed);
126 case ValueBase::TYPE_ANGLE:
127 return ((*link_)(t).get( Angle()) +
128 Angle::deg(random(Smooth(smooth), 0, 0, 0, speed) * radius));
130 case ValueBase::TYPE_BOOL:
131 return round_to_int((*link_)(t).get( bool()) +
132 random(Smooth(smooth), 0, 0, 0, speed) * radius) > 0;
134 case ValueBase::TYPE_COLOR:
135 return (((*link_)(t).get( Color()) +
136 Color(random(Smooth(smooth), 0, 0, 0, speed),
137 random(Smooth(smooth), 1, 0, 0, speed),
138 random(Smooth(smooth), 2, 0, 0, speed), 0) * radius).clamped());
140 case ValueBase::TYPE_INTEGER:
141 return round_to_int((*link_)(t).get( int()) +
142 random(Smooth(smooth), 0, 0, 0, speed) * radius);
144 case ValueBase::TYPE_REAL:
145 return ((*link_)(t).get( Real()) +
146 random(Smooth(smooth), 0, 0, 0, speed) * radius);
148 case ValueBase::TYPE_TIME:
149 return ((*link_)(t).get( Time()) +
150 random(Smooth(smooth), 0, 0, 0, speed) * radius);
152 case ValueBase::TYPE_VECTOR:
154 float length(random(Smooth(smooth), 0, 0, 0, speed) * radius);
155 Angle::rad angle(random(Smooth(smooth), 1, 0, 0, speed) * PI);
157 return ((*link_)(t).get(Vector()) +
158 Vector(Angle::cos(angle).get(), Angle::sin(angle).get()) * length);
171 ValueNode_Random::get_name()const
177 ValueNode_Random::get_local_name()const
183 ValueNode_Random::set_link_vfunc(int i,ValueNode::Handle value)
185 assert(i>=0 && i<link_count());
189 case 0: CHECK_TYPE_AND_SET_VALUE(link_, get_type());
190 case 1: CHECK_TYPE_AND_SET_VALUE(radius_, ValueBase::TYPE_REAL);
191 case 2: CHECK_TYPE_AND_SET_VALUE(seed_, ValueBase::TYPE_INTEGER);
192 case 3: CHECK_TYPE_AND_SET_VALUE(speed_, ValueBase::TYPE_REAL);
193 case 4: CHECK_TYPE_AND_SET_VALUE(smooth_, ValueBase::TYPE_INTEGER);
198 ValueNode::LooseHandle
199 ValueNode_Random::get_link_vfunc(int i)const
201 assert(i>=0 && i<link_count());
205 case 0: return link_;
206 case 1: return radius_;
207 case 2: return seed_;
208 case 3: return speed_;
209 case 4: return smooth_;
215 ValueNode_Random::link_count()const
221 ValueNode_Random::link_name(int i)const
223 assert(i>=0 && i<link_count());
227 case 0: return "link";
228 case 1: return "radius";
229 case 2: return "seed";
230 case 3: return "speed";
231 case 4: return "smooth";
237 ValueNode_Random::link_local_name(int i)const
239 assert(i>=0 && i<link_count());
243 case 0: return _("Link");
244 case 1: return _("Radius");
245 case 2: return _("Seed");
246 case 3: return _("Animation Speed");
247 case 4: return _("Interpolation");
253 ValueNode_Random::get_link_index_from_name(const String &name)const
255 if(name=="link" ) return 0;
256 if(name=="radius") return 1;
257 if(name=="seed" ) return 2;
258 if(name=="speed" ) return 3;
259 if(name=="smooth") return 4;
260 throw Exception::BadLinkName(name);
264 ValueNode_Random::check_type(ValueBase::Type type)
267 type==ValueBase::TYPE_ANGLE ||
268 type==ValueBase::TYPE_BOOL ||
269 type==ValueBase::TYPE_COLOR ||
270 type==ValueBase::TYPE_INTEGER ||
271 type==ValueBase::TYPE_REAL ||
272 type==ValueBase::TYPE_TIME ||
273 type==ValueBase::TYPE_VECTOR ;
277 ValueNode_Random::clone(const GUID& deriv_guid)const
279 ValueNode_Random* ret = (ValueNode_Random*)LinkableValueNode::clone(deriv_guid);
280 ret->randomize_seed();
285 ValueNode_Random::randomize_seed()
287 int i = get_link_index_from_name("seed");
288 ValueNode::Handle link = get_link_vfunc(i);
289 if(!link->is_exported() && link->get_name() == "constant")
291 int seed = time(NULL) + rand();
292 if (seed < 0) seed = -seed;
293 random.set_seed(seed);
294 set_link(i, ValueNode_Const::create(seed));