synfig-core/trunk/src/synfig/valuenode_cos.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenode_cos.cpp
   3 **      \brief Implementation of the "Cos" valuenode conversion.
   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 "valuenode_cos.h"
  34 #include "valuenode_const.h"
  35 #include "general.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_Cos::ValueNode_Cos(const ValueBase &value):
  54         LinkableValueNode(value.get_type())
  55 {
  56         switch(value.get_type())
  57         {
  58         case ValueBase::TYPE_REAL:
  59                 set_link("angle",ValueNode_Const::create(Angle::deg(0)));
  60                 set_link("amp",ValueNode_Const::create(value.get(Real())));
  61                 break;
  62         default:
  63                 throw Exception::BadType(ValueBase::type_local_name(value.get_type()));
  64         }
  65
  66         DCAST_HACK_ENABLE();
  67 }
  68
  69 LinkableValueNode*
  70 ValueNode_Cos::create_new()const
  71 {
  72         return new ValueNode_Cos(get_type());
  73 }
  74
  75 ValueNode_Cos*
  76 ValueNode_Cos::create(const ValueBase &x)
  77 {
  78         return new ValueNode_Cos(x);
  79 }
  80
  81 ValueNode_Cos::~ValueNode_Cos()
  82 {
  83         unlink_all();
  84 }
  85
  86 ValueBase
  87 ValueNode_Cos::operator()(Time t)const
  88 {
  89         if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
  90                 printf("%s:%d operator()\n", __FILE__, __LINE__);
  91
  92         return
  93                 Angle::cos(
  94                         (*angle_)(t).get(Angle())
  95                 ).get() * (*amp_)(t).get(Real());
  96 }
  97
  98
  99 String
 100 ValueNode_Cos::get_name()const
 101 {
 102         return "cos";
 103 }
 104
 105 String
 106 ValueNode_Cos::get_local_name()const
 107 {
 108         return _("Cos");
 109 }
 110
 111 bool
 112 ValueNode_Cos::check_type(ValueBase::Type type)
 113 {
 114         return type==ValueBase::TYPE_REAL;
 115 }
 116
 117 bool
 118 ValueNode_Cos::set_link_vfunc(int i,ValueNode::Handle value)
 119 {
 120         assert(i>=0 && i<link_count());
 121
 122         switch(i)
 123         {
 124         case 0: CHECK_TYPE_AND_SET_VALUE(angle_, ValueBase::TYPE_ANGLE);
 125         case 1: CHECK_TYPE_AND_SET_VALUE(amp_,   ValueBase::TYPE_REAL);
 126         }
 127
 128         return false;
 129 }
 130
 131 ValueNode::LooseHandle
 132 ValueNode_Cos::get_link_vfunc(int i)const
 133 {
 134         assert(i>=0 && i<link_count());
 135
 136         switch(i)
 137         {
 138         case 0: return angle_;
 139         case 1: return amp_;
 140         }
 141
 142         return 0;
 143 }
 144
 145 int
 146 ValueNode_Cos::link_count()const
 147 {
 148         return 2;
 149 }
 150
 151 String
 152 ValueNode_Cos::link_name(int i)const
 153 {
 154         assert(i>=0 && i<link_count());
 155
 156         switch(i)
 157         {
 158         case 0: return "angle";
 159         case 1: return "amp";
 160         }
 161
 162         return String();
 163 }
 164
 165 String
 166 ValueNode_Cos::link_local_name(int i)const
 167 {
 168         assert(i>=0 && i<link_count());
 169
 170         switch(i)
 171         {
 172         case 0: return _("Angle");
 173         case 1: return _("Amplitude");
 174         }
 175
 176         return String();
 177 }
 178
 179 int
 180 ValueNode_Cos::get_link_index_from_name(const String &name)const
 181 {
 182         if(name=="angle")       return 0;
 183         if(name=="amp")         return 1;
 184
 185         throw Exception::BadLinkName(name);
 186 }