synfig-studio/trunk/src/gtkmm/duck.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file duck.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  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.
  15 **
  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.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include "duck.h"
  34 #include <ETL/misc>
  35
  36 #include "general.h"
  37
  38 #endif
  39
  40 /* === U S I N G =========================================================== */
  41
  42 using namespace std;
  43 using namespace etl;
  44 using namespace synfig;
  45 using namespace studio;
  46
  47 /* === M A C R O S ========================================================= */
  48
  49 /* === G L O B A L S ======================================================= */
  50
  51 int studio::Duck::duck_count(0);
  52
  53 struct _DuckCounter
  54 {
  55         static int counter;
  56         ~_DuckCounter()
  57         {
  58                 if(counter)
  59                         synfig::error("%d ducks not yet deleted!",counter);
  60         }
  61 } _duck_counter;
  62
  63 int _DuckCounter::counter(0);
  64
  65
  66 /* === P R O C E D U R E S ================================================= */
  67
  68 /* === M E T H O D S ======================================================= */
  69
  70 Duck::Duck():
  71         rotations(synfig::Angle::deg(0)),
  72         origin(0,0),
  73         scalar(1),
  74         editable(false),
  75         radius_(false),
  76         tangent_(false),
  77         hover_(false),
  78         ignore_(false)
  79 { duck_count++; _DuckCounter::counter++; }
  80
  81 Duck::Duck(const synfig::Point &point):
  82         type_(TYPE_NONE),
  83         point(point),
  84         rotations(synfig::Angle::deg(0)),
  85         origin(0,0),
  86         scalar(1),
  87         guid_(0),
  88         editable(false),
  89         radius_(false),
  90         tangent_(false),
  91         hover_(false),
  92         ignore_(false)
  93 { duck_count++; _DuckCounter::counter++;}
  94
  95 Duck::Duck(const synfig::Point &point,const synfig::Point &origin):
  96         point(point),
  97         rotations(synfig::Angle::deg(0)),
  98         origin(origin),
  99         scalar(1),
 100         guid_(0),
 101         editable(false),
 102         radius_(true),
 103         tangent_(false),
 104         hover_(false),
 105         ignore_(false)
 106 { duck_count++; _DuckCounter::counter++;}
 107
 108 Duck::~Duck() { duck_count--; _DuckCounter::counter--;}
 109
 110 synfig::GUID
 111 Duck::get_data_guid()const
 112 {
 113         if(value_desc_.is_value_node())
 114                 return value_desc_.get_value_node()->get_guid();
 115         return GUID::hasher(get_name());
 116 }
 117
 118 void
 119 Duck::set_name(const synfig::String &x)
 120 {
 121         name=x;
 122         if(guid_==GUID::zero())
 123         {
 124                 guid_=GUID::hasher(name);
 125         }
 126 }
 127
 128
 129 bool
 130 Duck::operator==(const Duck &rhs)const
 131 {
 132         if(this==&rhs)
 133                 return true;
 134         return
 135                 name==rhs.name &&
 136                 scalar==rhs.scalar &&
 137                 type_==rhs.type_ &&
 138                 transform_stack_.size()==rhs.transform_stack_.size();
 139                 //true;
 140                 //(origin_duck?*origin_duck==*rhs.origin_duck:origin==rhs.origin) &&
 141                 //(shared_point?*shared_point==*rhs.shared_point:point==rhs.point) ;
 142 }
 143
 144 synfig::Point
 145 Duck::get_trans_point()const
 146 {
 147         return transform_stack_.perform(get_sub_trans_point());
 148 }
 149
 150 void
 151 Duck::set_trans_point(const synfig::Point &x)
 152 {
 153         set_sub_trans_point(transform_stack_.unperform(x));
 154 }
 155
 156 //! Sets the origin point.
 157 void
 158 Duck::set_origin(const synfig::Point &x)
 159 {
 160         origin=x; origin_duck=0;
 161 }
 162
 163 //! Sets the origin point as another duck
 164 void
 165 Duck::set_origin(const etl::handle<Duck> &x)
 166 {
 167         origin_duck=x;
 168 }
 169
 170 //! Retrieves the origin location
 171 synfig::Point
 172 Duck::get_origin()const
 173 {
 174         return origin_duck?origin_duck->get_point():origin;
 175 }
 176
 177 //! Retrieves the origin duck
 178 const etl::handle<Duck> &
 179 Duck::get_origin_duck() const
 180 {
 181         return origin_duck;
 182 }
 183
 184 //! Retrieves the origin location
 185 synfig::Point
 186 Duck::get_trans_origin()const
 187 {
 188         return transform_stack_.perform(get_sub_trans_origin());
 189 }
 190
 191 synfig::Point
 192 Duck::get_sub_trans_point()const
 193 {
 194         return get_point()*get_scalar()+get_sub_trans_origin();
 195 }
 196
 197 void
 198 Duck::set_sub_trans_point(const synfig::Point &x)
 199 {
 200         if (get_type() == Duck::TYPE_TANGENT ||
 201                 get_type() == Duck::TYPE_ANGLE)
 202         {
 203                 Angle old_angle = get_point().angle();
 204                 set_point((x-get_sub_trans_origin())/get_scalar());
 205                 Angle change = get_point().angle() - old_angle;
 206                 while (change < Angle::deg(-180)) change += Angle::deg(360);
 207                 while (change > Angle::deg(180)) change -= Angle::deg(360);
 208                 int old_quarters = round_to_int(Angle::deg(rotations).get()/90);
 209                 rotations += change;
 210                 int new_quarters = round_to_int(Angle::deg(rotations).get()/90);
 211                 if (old_quarters != new_quarters)
 212                         synfig::info("rotation: %.2f turns", new_quarters/4.0);
 213         }
 214         else
 215                 set_point((x-get_sub_trans_origin())/get_scalar());
 216 }
 217
 218 synfig::Point
 219 Duck::get_sub_trans_origin()const
 220 {
 221         return origin_duck?origin_duck->get_sub_trans_point():origin;
 222 }