synfig-core/tags/synfig_0_61_07_rc1/src/synfig/valuenode_linear.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenode_linear.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 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 "valuenode_linear.h"
  34 #include "valuenode_const.h"
  35 #include "general.h"
  36 #include "color.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
  46 /* === M A C R O S ========================================================= */
  47
  48 /* === G L O B A L S ======================================================= */
  49
  50 /* === P R O C E D U R E S ================================================= */
  51
  52 /* === M E T H O D S ======================================================= */
  53
  54 ValueNode_Linear::ValueNode_Linear(const ValueBase &value):
  55         LinkableValueNode(value.get_type())
  56 {
  57         switch(get_type())
  58         {
  59         case ValueBase::TYPE_ANGLE:
  60                 set_link("slope",ValueNode_Const::create(Angle::deg(0)));
  61                 set_link("offset",ValueNode_Const::create(value.get(Angle())));
  62                 break;
  63         case ValueBase::TYPE_COLOR:
  64                 set_link("slope",ValueNode_Const::create(Color(0,0,0,0)));
  65                 set_link("offset",ValueNode_Const::create(value.get(Color())));
  66                 break;
  67         case ValueBase::TYPE_INTEGER:
  68                 set_link("slope",ValueNode_Const::create(int(0)));
  69                 set_link("offset",ValueNode_Const::create(value.get(int())));
  70                 break;
  71         case ValueBase::TYPE_REAL:
  72                 set_link("slope",ValueNode_Const::create(Real(0)));
  73                 set_link("offset",ValueNode_Const::create(value.get(Real())));
  74                 break;
  75         case ValueBase::TYPE_TIME:
  76                 set_link("slope",ValueNode_Const::create(Time(0)));
  77                 set_link("offset",ValueNode_Const::create(value.get(Time())));
  78                 break;
  79         case ValueBase::TYPE_VECTOR:
  80                 set_link("slope",ValueNode_Const::create(Vector(0,0)));
  81                 set_link("offset",ValueNode_Const::create(value.get(Vector())));
  82                 break;
  83         default:
  84                 throw Exception::BadType(ValueBase::type_name(get_type()));
  85         }
  86
  87         DCAST_HACK_ENABLE();
  88 }
  89
  90 LinkableValueNode*
  91 ValueNode_Linear::create_new()const
  92 {
  93         return new ValueNode_Linear(get_type());
  94 }
  95
  96 ValueNode_Linear*
  97 ValueNode_Linear::create(const ValueBase &x)
  98 {
  99         return new ValueNode_Linear(x);
 100 }
 101
 102 ValueNode_Linear::~ValueNode_Linear()
 103 {
 104         unlink_all();
 105 }
 106
 107 ValueBase
 108 ValueNode_Linear::operator()(Time t)const
 109 {
 110         switch(get_type())
 111         {
 112         case ValueBase::TYPE_ANGLE:
 113                 return (*m_)(t).get( Angle())*t+(*b_)(t).get( Angle());
 114         case ValueBase::TYPE_COLOR:
 115                 return (*m_)(t).get( Color())*t+(*b_)(t).get( Color());
 116         case ValueBase::TYPE_INTEGER:
 117         {
 118                 Real ret = (*m_)(t).get(int())*t+(*b_)(t).get(int()) + 0.5f;
 119                 if (ret < 0) return static_cast<int>(ret-1);
 120                 return static_cast<int>(ret);
 121         }
 122         case ValueBase::TYPE_REAL:
 123                 return (*m_)(t).get(  Real())*t+(*b_)(t).get(  Real());
 124         case ValueBase::TYPE_TIME:
 125                 return (*m_)(t).get(  Time())*t+(*b_)(t).get(  Time());
 126         case ValueBase::TYPE_VECTOR:
 127                 return (*m_)(t).get(Vector())*t+(*b_)(t).get(Vector());
 128         default:
 129                 assert(0);
 130                 break;
 131         }
 132         return ValueBase();
 133 }
 134
 135
 136 String
 137 ValueNode_Linear::get_name()const
 138 {
 139         return "linear";
 140 }
 141
 142 String
 143 ValueNode_Linear::get_local_name()const
 144 {
 145         return _("Linear");
 146 }
 147
 148 bool
 149 ValueNode_Linear::check_type(ValueBase::Type type)
 150 {
 151         return
 152                 type==ValueBase::TYPE_ANGLE             ||
 153                 type==ValueBase::TYPE_COLOR             ||
 154                 type==ValueBase::TYPE_INTEGER   ||
 155                 type==ValueBase::TYPE_REAL              ||
 156                 type==ValueBase::TYPE_TIME              ||
 157                 type==ValueBase::TYPE_VECTOR    ;
 158 }
 159
 160 bool
 161 ValueNode_Linear::set_link_vfunc(int i,ValueNode::Handle x)
 162 {
 163         assert(i==0 || i==1);
 164         if(i==0)
 165         {
 166                 m_=x;
 167                 signal_child_changed()(i);signal_value_changed()();
 168                 return true;
 169         }
 170         if(i==1)
 171         {
 172                 b_=x;
 173                 signal_child_changed()(i);signal_value_changed()();
 174                 return true;
 175         }
 176         return false;
 177 }
 178
 179 ValueNode::LooseHandle
 180 ValueNode_Linear::get_link_vfunc(int i)const
 181 {
 182         assert(i==0 || i==1);
 183         if(i==0) return m_;
 184         if(i==1) return b_;
 185         return 0;
 186 }
 187
 188 int
 189 ValueNode_Linear::link_count()const
 190 {
 191         return 2;
 192 }
 193
 194 String
 195 ValueNode_Linear::link_name(int i)const
 196 {
 197         assert(i==0 || i==1);
 198         if(i==0) return "slope";
 199         if(i==1) return "offset";
 200         return String();
 201 }
 202
 203 String
 204 ValueNode_Linear::link_local_name(int i)const
 205 {
 206         assert(i==0 || i==1);
 207         if(i==0)
 208                 switch(get_type())
 209                 {
 210                 case ValueBase::TYPE_ANGLE:
 211                 case ValueBase::TYPE_COLOR:
 212                 case ValueBase::TYPE_INTEGER:
 213                 case ValueBase::TYPE_REAL:
 214                 case ValueBase::TYPE_TIME:
 215                         return _("Rate");
 216                 case ValueBase::TYPE_VECTOR:
 217                 default:
 218                         return _("Slope");
 219                 }
 220         if(i==1)
 221                 return _("Offset");
 222         return String();
 223 }
 224
 225 int
 226 ValueNode_Linear::get_link_index_from_name(const String &name)const
 227 {
 228         if(name=="slope")  return 0;
 229         if(name=="offset") return 1;
 230
 231         throw Exception::BadLinkName(name);
 232 }