1 /* === S Y N F I G ========================================================= */
2 /*! \file valuenode_range.cpp
3 ** \brief Implementation of the "Range" 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_range.h"
35 #include "valuenode_const.h"
43 /* === U S I N G =========================================================== */
47 using namespace synfig;
49 /* === M A C R O S ========================================================= */
51 /* === G L O B A L S ======================================================= */
53 /* === P R O C E D U R E S ================================================= */
55 /* === M E T H O D S ======================================================= */
57 synfig::ValueNode_Range::ValueNode_Range(const ValueBase &value):
58 LinkableValueNode(value.get_type())
60 ValueBase::Type id(value.get_type());
64 case ValueBase::TYPE_ANGLE:
65 set_link("min",ValueNode_Const::create(value.get(Angle())));
66 set_link("max",ValueNode_Const::create(value.get(Angle())));
67 set_link("link",ValueNode_Const::create(value.get(Angle())));
69 case ValueBase::TYPE_INTEGER:
70 set_link("min",ValueNode_Const::create(value.get(int())));
71 set_link("max",ValueNode_Const::create(value.get(int())));
72 set_link("link",ValueNode_Const::create(value.get(int())));
74 case ValueBase::TYPE_REAL:
75 set_link("min",ValueNode_Const::create(value.get(Real())));
76 set_link("max",ValueNode_Const::create(value.get(Real())));
77 set_link("link",ValueNode_Const::create(value.get(Real())));
79 case ValueBase::TYPE_TIME:
80 set_link("min",ValueNode_Const::create(value.get(Time())));
81 set_link("max",ValueNode_Const::create(value.get(Time())));
82 set_link("link",ValueNode_Const::create(value.get(Time())));
86 throw runtime_error(get_local_name()+_(":Bad type ")+ValueBase::type_local_name(id));
89 assert(min_->get_type()==id);
90 assert(max_->get_type()==id);
91 assert(link_->get_type()==id);
92 assert(get_type()==id);
96 ValueNode_Range::create_new()const
98 return new ValueNode_Range(get_type());
102 ValueNode_Range::create(const ValueBase& value)
104 return new ValueNode_Range(value);
107 synfig::ValueNode_Range::~ValueNode_Range()
113 synfig::ValueNode_Range::operator()(Time t)const
115 if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
116 printf("%s:%d operator()\n", __FILE__, __LINE__);
118 if(!min_ || !max_ || !link_)
119 throw runtime_error(strprintf("ValueNode_Range: %s",_("Some of my parameters aren't set!")));
123 case ValueBase::TYPE_ANGLE:
125 Angle minimum = (* min_)(t).get(Angle());
126 Angle maximum = (* max_)(t).get(Angle());
127 Angle link = (*link_)(t).get(Angle());
128 // This code was removed because it didn't work with link < minimum
129 // It is sane to completely delete it if the replacement code is fine.
130 /* ***********************************************
131 // if link is between min and max, use it
132 if (Angle::deg((link-minimum).mod()).get() < Angle::deg((maximum-minimum).mod()).get())
134 // otherwise use whichever of min and max is closest to link
135 else if (link.dist(minimum).abs() < link.dist(maximum).abs())
139 *********************************************** */
140 if(Angle::rad(maximum).get()>=Angle::rad(link).get() && Angle::rad(link).get()>=Angle::rad(minimum).get())
142 else if (Angle::rad(minimum).get()>Angle::rad(link).get())
147 case ValueBase::TYPE_INTEGER:
148 return std::max((*min_)(t).get(int()), std::min((*max_)(t).get(int()), (*link_)(t).get(int())));
149 case ValueBase::TYPE_REAL:
150 return std::max((*min_)(t).get(Real()), std::min((*max_)(t).get(Real()), (*link_)(t).get(Real())));
151 case ValueBase::TYPE_TIME:
152 return std::max((*min_)(t).get(Time()), std::min((*max_)(t).get(Time()), (*link_)(t).get(Time())));
161 synfig::ValueNode_Range::get_inverse(Time t, const synfig::Vector &target_value) const
165 case ValueBase::TYPE_INTEGER:
167 int max_value((*max_)(t).get(int()));
168 int min_value((*min_)(t).get(int()));
169 return std::max(min_value, std::min(max_value, int(target_value.mag())));
171 case ValueBase::TYPE_REAL:
173 Real max_value((*max_)(t).get(Real()));
174 Real min_value((*min_)(t).get(Real()));
175 return std::max(min_value, std::min(max_value, target_value.mag()));
177 case ValueBase::TYPE_ANGLE:
179 Angle max_value((*max_)(t).get(Angle()));
180 Angle min_value((*min_)(t).get(Angle()));
181 Angle target_angle(Angle::tan(target_value[1],target_value[0]));
182 return target_angle>max_value?max_value:target_angle<min_value?min_value:target_angle;
184 case ValueBase::TYPE_TIME:
186 Real max_value((*max_)(t).get(Time()));
187 Real min_value((*min_)(t).get(Time()));
188 return std::max(min_value, std::min(max_value, target_value.mag()));
197 synfig::ValueNode_Range::get_inverse(Time t, const synfig::Angle &target_value) const
199 Angle minimum = (* min_)(t).get(Angle());
200 Angle maximum = (* max_)(t).get(Angle());
201 Angle link = (*link_)(t).get(Angle());
205 // Notice that target_value is the rotation between the current
206 // 'link' value and the target angle in the canvas, so we need
207 // to add it to 'link'
208 if(Angle::rad(maximum).get()>=Angle::rad(link+target_value).get() && Angle::rad(link+target_value).get()>=Angle::rad(minimum).get())
209 return link + target_value;
210 else if (Angle::rad(minimum).get()>Angle::rad(target_value).get())
220 ValueNode_Range::set_link_vfunc(int i,ValueNode::Handle value)
222 assert(i>=0 && i<link_count());
226 case 0: CHECK_TYPE_AND_SET_VALUE(min_, get_type());
227 case 1: CHECK_TYPE_AND_SET_VALUE(max_, get_type());
228 case 2: CHECK_TYPE_AND_SET_VALUE(link_, get_type());
233 ValueNode::LooseHandle
234 ValueNode_Range::get_link_vfunc(int i)const
236 assert(i>=0 && i<link_count());
242 case 2: return link_;
248 ValueNode_Range::link_count()const
254 ValueNode_Range::link_local_name(int i)const
256 assert(i>=0 && i<link_count());
260 case 0: return _("Min");
261 case 1: return _("Max");
262 case 2: return _("Link");
263 default: return String();
268 ValueNode_Range::link_name(int i)const
270 assert(i>=0 && i<link_count());
274 case 0: return "min";
275 case 1: return "max";
276 case 2: return "link";
277 default: return String();
282 ValueNode_Range::get_link_index_from_name(const String &name)const
284 if(name=="min") return 0;
285 if(name=="max") return 1;
286 if(name=="link") return 2;
287 throw Exception::BadLinkName(name);
291 ValueNode_Range::get_name()const
297 ValueNode_Range::get_local_name()const
303 ValueNode_Range::check_type(ValueBase::Type type)
305 return type==ValueBase::TYPE_ANGLE
306 || type==ValueBase::TYPE_INTEGER
307 || type==ValueBase::TYPE_REAL
308 || type==ValueBase::TYPE_TIME;