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 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_COLOR:
71 set_link("link",ValueNode_Const::create(value.get(Color())));
73 case ValueBase::TYPE_INTEGER:
74 set_link("link",ValueNode_Const::create(value.get(int())));
76 case ValueBase::TYPE_REAL:
77 set_link("link",ValueNode_Const::create(value.get(Real())));
79 case ValueBase::TYPE_TIME:
80 set_link("link",ValueNode_Const::create(value.get(Time())));
82 case ValueBase::TYPE_VECTOR:
83 set_link("link",ValueNode_Const::create(value.get(Vector())));
86 throw Exception::BadType(ValueBase::type_local_name(get_type()));
93 ValueNode_Random::create_new()const
95 return new ValueNode_Random(get_type());
99 ValueNode_Random::create(const ValueBase &x)
101 return new ValueNode_Random(x);
104 ValueNode_Random::~ValueNode_Random()
110 ValueNode_Random::operator()(Time t)const
112 typedef const Random::SmoothType Smooth;
114 Real radius = (*radius_)(t).get(Real());
115 int seed = (*seed_)(t).get(int());
116 int smooth = (*smooth_)(t).get(int());
117 float speed = (*speed_ )(t).get(Real()) * t;
119 random.set_seed(seed);
123 case ValueBase::TYPE_ANGLE:
124 return ((*link_)(t).get( Angle()) +
125 Angle::deg(random(Smooth(smooth), 0, 0, 0, speed) * radius));
127 case ValueBase::TYPE_COLOR:
128 return (((*link_)(t).get( Color()) +
129 Color(random(Smooth(smooth), 0, 0, 0, speed),
130 random(Smooth(smooth), 1, 0, 0, speed),
131 random(Smooth(smooth), 2, 0, 0, speed), 0) * radius).clamped());
133 case ValueBase::TYPE_INTEGER:
134 return round_to_int((*link_)(t).get( int()) +
135 random(Smooth(smooth), 0, 0, 0, speed) * radius);
137 case ValueBase::TYPE_REAL:
138 return ((*link_)(t).get( Real()) +
139 random(Smooth(smooth), 0, 0, 0, speed) * radius);
141 case ValueBase::TYPE_TIME:
142 return ((*link_)(t).get( Time()) +
143 random(Smooth(smooth), 0, 0, 0, speed) * radius);
145 case ValueBase::TYPE_VECTOR:
147 float length(random(Smooth(smooth), 0, 0, 0, speed) * radius);
148 Angle::rad angle(random(Smooth(smooth), 1, 0, 0, speed) * PI);
150 return ((*link_)(t).get(Vector()) +
151 Vector(Angle::cos(angle).get(), Angle::sin(angle).get()) * length);
164 ValueNode_Random::get_name()const
170 ValueNode_Random::get_local_name()const
176 ValueNode_Random::set_link_vfunc(int i,ValueNode::Handle value)
178 assert(i>=0 && i<link_count());
182 case 0: CHECK_TYPE_AND_SET_VALUE(link_, get_type());
183 case 1: CHECK_TYPE_AND_SET_VALUE(radius_, ValueBase::TYPE_REAL);
184 case 2: CHECK_TYPE_AND_SET_VALUE(seed_, ValueBase::TYPE_INTEGER);
185 case 3: CHECK_TYPE_AND_SET_VALUE(speed_, ValueBase::TYPE_REAL);
186 case 4: CHECK_TYPE_AND_SET_VALUE(smooth_, ValueBase::TYPE_INTEGER);
191 ValueNode::LooseHandle
192 ValueNode_Random::get_link_vfunc(int i)const
194 assert(i>=0 && i<link_count());
198 case 0: return link_;
199 case 1: return radius_;
200 case 2: return seed_;
201 case 3: return speed_;
202 case 4: return smooth_;
208 ValueNode_Random::link_count()const
214 ValueNode_Random::link_name(int i)const
216 assert(i>=0 && i<link_count());
220 case 0: return "link";
221 case 1: return "radius";
222 case 2: return "seed";
223 case 3: return "speed";
224 case 4: return "smooth";
230 ValueNode_Random::link_local_name(int i)const
232 assert(i>=0 && i<link_count());
236 case 0: return _("Link");
237 case 1: return _("Radius");
238 case 2: return _("Seed");
239 case 3: return _("Animation Speed");
240 case 4: return _("Interpolation");
246 ValueNode_Random::get_link_index_from_name(const String &name)const
248 if(name=="link" ) return 0;
249 if(name=="radius") return 1;
250 if(name=="seed" ) return 2;
251 if(name=="speed" ) return 3;
252 if(name=="smooth") return 4;
253 throw Exception::BadLinkName(name);
257 ValueNode_Random::check_type(ValueBase::Type type)
260 type==ValueBase::TYPE_ANGLE ||
261 type==ValueBase::TYPE_COLOR ||
262 type==ValueBase::TYPE_INTEGER ||
263 type==ValueBase::TYPE_REAL ||
264 type==ValueBase::TYPE_TIME ||
265 type==ValueBase::TYPE_VECTOR ;
269 ValueNode_Random::clone(const GUID& deriv_guid)const
271 ValueNode_Random* ret = (ValueNode_Random*)LinkableValueNode::clone(deriv_guid);
272 ret->randomize_seed();
277 ValueNode_Random::randomize_seed()
279 int i = get_link_index_from_name("seed");
280 ValueNode::Handle link = get_link_vfunc(i);
281 if(!link->is_exported() && link->get_name() == "constant")
283 int seed = time(NULL) + rand();
284 if (seed < 0) seed = -seed;
285 random.set_seed(seed);
286 set_link(i, ValueNode_Const::create(seed));