synfig-core/trunk/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 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "valuenode_linear.h"
  33 #include "valuenode_const.h"
  34 #include "general.h"
  35 #include "color.h"
  36
  37 #endif
  38
  39 /* === U S I N G =========================================================== */
  40
  41 using namespace std;
  42 using namespace etl;
  43 using namespace synfig;
  44
  45 /* === M A C R O S ========================================================= */
  46
  47 /* === G L O B A L S ======================================================= */
  48
  49 /* === P R O C E D U R E S ================================================= */
  50
  51 /* === M E T H O D S ======================================================= */
  52
  53 ValueNode_Linear::ValueNode_Linear(const ValueBase &value):
  54         LinkableValueNode(value.get_type())
  55 {
  56         switch(get_type())
  57         {
  58         case ValueBase::TYPE_ANGLE:
  59                 set_link("slope",ValueNode_Const::create(Angle::deg(0)));
  60                 set_link("offset",ValueNode_Const::create(value.get(Angle())));
  61                 break;
  62         case ValueBase::TYPE_COLOR:
  63                 set_link("slope",ValueNode_Const::create(Color(0,0,0,0)));
  64                 set_link("offset",ValueNode_Const::create(value.get(Color())));
  65                 break;
  66         case ValueBase::TYPE_INTEGER:
  67                 set_link("slope",ValueNode_Const::create(int(0)));
  68                 set_link("offset",ValueNode_Const::create(value.get(int())));
  69                 break;
  70         case ValueBase::TYPE_REAL:
  71                 set_link("slope",ValueNode_Const::create(Real(0)));
  72                 set_link("offset",ValueNode_Const::create(value.get(Real())));
  73                 break;
  74         case ValueBase::TYPE_TIME:
  75                 set_link("slope",ValueNode_Const::create(Time(0)));
  76                 set_link("offset",ValueNode_Const::create(value.get(Time())));
  77                 break;
  78         case ValueBase::TYPE_VECTOR:
  79                 set_link("slope",ValueNode_Const::create(Vector(0,0)));
  80                 set_link("offset",ValueNode_Const::create(value.get(Vector())));
  81                 break;
  82         default:
  83                 throw Exception::BadType(ValueBase::type_name(get_type()));
  84         }
  85
  86         DCAST_HACK_ENABLE();
  87 }
  88
  89 ValueNode_Linear*
  90 ValueNode_Linear::create(const ValueBase &x)
  91 {
  92         return new ValueNode_Linear(x);
  93 }
  94
  95 ValueNode_Linear::~ValueNode_Linear()
  96 {
  97         unlink_all();
  98 }
  99
 100 ValueBase
 101 ValueNode_Linear::operator()(Time t)const
 102 {
 103         switch(get_type())
 104         {
 105         case ValueBase::TYPE_ANGLE:
 106                 return (*m_)(t).get( Angle())*t+(*b_)(t).get( Angle());
 107         case ValueBase::TYPE_COLOR:
 108                 return (*m_)(t).get( Color())*t+(*b_)(t).get( Color());
 109         case ValueBase::TYPE_INTEGER:
 110                 return static_cast<int>((*m_)(t).get(int())*t+(*b_)(t).get(int()) + 0.5f);
 111         case ValueBase::TYPE_REAL:
 112                 return (*m_)(t).get(  Real())*t+(*b_)(t).get(  Real());
 113         case ValueBase::TYPE_TIME:
 114                 return (*m_)(t).get(  Time())*t+(*b_)(t).get(  Time());
 115         case ValueBase::TYPE_VECTOR:
 116                 return (*m_)(t).get(Vector())*t+(*b_)(t).get(Vector());
 117         default:
 118                 assert(0);
 119                 break;
 120         }
 121         return ValueBase();
 122 }
 123
 124
 125 String
 126 ValueNode_Linear::get_name()const
 127 {
 128         return "linear";
 129 }
 130
 131 String
 132 ValueNode_Linear::get_local_name()const
 133 {
 134         return _("Linear");
 135 }
 136
 137 bool
 138 ValueNode_Linear::check_type(ValueBase::Type type)
 139 {
 140         return
 141                 type==ValueBase::TYPE_ANGLE             ||
 142                 type==ValueBase::TYPE_COLOR             ||
 143                 type==ValueBase::TYPE_INTEGER   ||
 144                 type==ValueBase::TYPE_REAL              ||
 145                 type==ValueBase::TYPE_TIME              ||
 146                 type==ValueBase::TYPE_VECTOR    ;
 147 }
 148
 149 bool
 150 ValueNode_Linear::set_link_vfunc(int i,ValueNode::Handle x)
 151 {
 152         assert(i==0 || i==1);
 153         if(i==0)
 154         {
 155                 m_=x;
 156                 signal_child_changed()(i);signal_value_changed()();
 157                 return true;
 158         }
 159         if(i==1)
 160         {
 161                 b_=x;
 162                 signal_child_changed()(i);signal_value_changed()();
 163                 return true;
 164         }
 165         return false;
 166 }
 167
 168 ValueNode::LooseHandle
 169 ValueNode_Linear::get_link_vfunc(int i)const
 170 {
 171         assert(i==0 || i==1);
 172         if(i==0) return m_;
 173         if(i==1) return b_;
 174         return 0;
 175 }
 176
 177 int
 178 ValueNode_Linear::link_count()const
 179 {
 180         return 2;
 181 }
 182
 183 String
 184 ValueNode_Linear::link_name(int i)const
 185 {
 186         assert(i==0 || i==1);
 187         if(i==0) return "slope";
 188         if(i==1) return "offset";
 189         return String();
 190 }
 191
 192 String
 193 ValueNode_Linear::link_local_name(int i)const
 194 {
 195         assert(i==0 || i==1);
 196         if(i==0)
 197                 switch(get_type())
 198                 {
 199                 case ValueBase::TYPE_ANGLE:
 200                 case ValueBase::TYPE_COLOR:
 201                 case ValueBase::TYPE_INTEGER:
 202                 case ValueBase::TYPE_REAL:
 203                 case ValueBase::TYPE_TIME:
 204                         return _("Rate");
 205                 case ValueBase::TYPE_VECTOR:
 206                 default:
 207                         return _("Slope");
 208                 }
 209         if(i==1)
 210                 return _("Offset");
 211         return String();
 212 }
 213
 214 int
 215 ValueNode_Linear::get_link_index_from_name(const String &name)const
 216 {
 217         if(name=="slope")  return 0;
 218         if(name=="offset") return 1;
 219
 220         throw Exception::BadLinkName(name);
 221 }
 222
 223 LinkableValueNode*
 224 ValueNode_Linear::create_new()const
 225 {
 226         return new ValueNode_Linear(get_type());
 227 }