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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenode_subtract.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 "general.h"
  33 #include "valuenode_subtract.h"
  34 #include "valuenode_const.h"
  35 #include <stdexcept>
  36 #include "color.h"
  37 #include "vector.h"
  38 #include "angle.h"
  39 #include "real.h"
  40
  41 #endif
  42
  43 /* === U S I N G =========================================================== */
  44
  45 using namespace std;
  46 using namespace etl;
  47 using namespace synfig;
  48
  49 /* === M A C R O S ========================================================= */
  50
  51 /* === G L O B A L S ======================================================= */
  52
  53 /* === P R O C E D U R E S ================================================= */
  54
  55 /* === M E T H O D S ======================================================= */
  56
  57 synfig::ValueNode_Subtract::ValueNode_Subtract():LinkableValueNode(synfig::ValueBase::TYPE_NIL)
  58 {
  59         set_scalar(1.0);
  60 }
  61
  62 LinkableValueNode*
  63 ValueNode_Subtract::create_new()const
  64 {
  65         return new ValueNode_Subtract();
  66 }
  67
  68 ValueNode_Subtract*
  69 ValueNode_Subtract::create(const ValueBase& x)
  70 {
  71         ValueBase::Type id(x.get_type());
  72
  73         ValueNode_Subtract* value_node=new ValueNode_Subtract();
  74         switch(id)
  75         {
  76         case ValueBase::TYPE_NIL:
  77                 return value_node;
  78         case ValueBase::TYPE_COLOR:
  79                 value_node->set_link("lhs",ValueNode_Const::create(x.get(Color())));
  80                 value_node->set_link("rhs",ValueNode_Const::create(Color(0,0,0,0)));
  81                 break;
  82         case ValueBase::TYPE_ANGLE:
  83         case ValueBase::TYPE_INTEGER:
  84         case ValueBase::TYPE_REAL:
  85         case ValueBase::TYPE_VECTOR:
  86                 value_node->set_link("lhs",ValueNode_Const::create(ValueBase(id)));
  87                 value_node->set_link("rhs",ValueNode_Const::create(ValueBase(id)));
  88                 break;
  89         default:
  90                 assert(0);
  91                 throw runtime_error("synfig::ValueNode_Subtract:Bad type "+ValueBase::type_name(id));
  92         }
  93
  94         assert(value_node->get_lhs()->get_type()==id);
  95         assert(value_node->get_rhs()->get_type()==id);
  96
  97         assert(value_node->get_type()==id);
  98
  99         return value_node;
 100 }
 101
 102 synfig::ValueNode_Subtract::~ValueNode_Subtract()
 103 {
 104         unlink_all();
 105 }
 106
 107 void
 108 ValueNode_Subtract::set_scalar(Real x)
 109 {
 110         set_link("scalar",ValueNode_Const::create(x));
 111 }
 112
 113 bool
 114 synfig::ValueNode_Subtract::set_scalar(ValueNode::Handle x)
 115 {
 116         if(x->get_type()!=ValueBase::TYPE_REAL&& !PlaceholderValueNode::Handle::cast_dynamic(x))
 117                 return false;
 118         scalar=x;
 119         return true;
 120 }
 121
 122 bool
 123 synfig::ValueNode_Subtract::set_lhs(ValueNode::Handle a)
 124 {
 125         ref_a=a;
 126
 127         if(PlaceholderValueNode::Handle::cast_dynamic(a))
 128                 return true;
 129
 130         if(!ref_a || !ref_b)
 131                 set_type(ValueBase::TYPE_NIL);
 132         else
 133         if(ref_a->get_type()==ValueBase::TYPE_ANGLE && ref_a->get_type()==ValueBase::TYPE_ANGLE)
 134                 set_type(ValueBase::TYPE_ANGLE);
 135         else
 136         if(ref_a->get_type()==ValueBase::TYPE_COLOR && ref_a->get_type()==ValueBase::TYPE_COLOR)
 137                 set_type(ValueBase::TYPE_COLOR);
 138         else
 139         if(ref_a->get_type()==ValueBase::TYPE_INTEGER && ref_a->get_type()==ValueBase::TYPE_INTEGER)
 140                 set_type(ValueBase::TYPE_INTEGER);
 141         else
 142         if(ref_a->get_type()==ValueBase::TYPE_REAL && ref_a->get_type()==ValueBase::TYPE_REAL)
 143                 set_type(ValueBase::TYPE_REAL);
 144         else
 145         if(ref_a->get_type()==ValueBase::TYPE_VECTOR && ref_a->get_type()==ValueBase::TYPE_VECTOR)
 146                 set_type(ValueBase::TYPE_VECTOR);
 147         else
 148         {
 149                 synfig::warning(get_id()+":(set_a):"+strprintf(_("Types seem to be off for ValueNodes %s and %s"),ref_a->get_id().c_str(),ref_b->get_id().c_str()));
 150                 set_type(ValueBase::TYPE_NIL);
 151         }
 152
 153         return true;
 154 }
 155
 156 bool
 157 synfig::ValueNode_Subtract::set_rhs(ValueNode::Handle b)
 158 {
 159         ref_b=b;
 160
 161         if(PlaceholderValueNode::Handle::cast_dynamic(b))
 162                 return true;
 163
 164         if(!ref_a || !ref_b)
 165                 set_type(ValueBase::TYPE_NIL);
 166         else
 167         if(ref_a->get_type()==ValueBase::TYPE_ANGLE && ref_a->get_type()==ValueBase::TYPE_ANGLE)
 168                 set_type(ValueBase::TYPE_ANGLE);
 169         else
 170         if(ref_a->get_type()==ValueBase::TYPE_COLOR && ref_a->get_type()==ValueBase::TYPE_COLOR)
 171                 set_type(ValueBase::TYPE_COLOR);
 172         else
 173         if(ref_a->get_type()==ValueBase::TYPE_INTEGER && ref_a->get_type()==ValueBase::TYPE_INTEGER)
 174                 set_type(ValueBase::TYPE_INTEGER);
 175         else
 176         if(ref_a->get_type()==ValueBase::TYPE_REAL && ref_a->get_type()==ValueBase::TYPE_REAL)
 177                 set_type(ValueBase::TYPE_REAL);
 178         else
 179         if(ref_a->get_type()==ValueBase::TYPE_VECTOR && ref_a->get_type()==ValueBase::TYPE_VECTOR)
 180                 set_type(ValueBase::TYPE_VECTOR);
 181         else
 182         {
 183                 synfig::warning(get_id()+":(set_b):"+strprintf(_("Types seem to be off for ValueNodes %s and %s"),ref_a->get_id().c_str(),ref_b->get_id().c_str()));
 184                 set_type(ValueBase::TYPE_NIL);
 185         }
 186
 187         return true;
 188 }
 189
 190 synfig::ValueBase
 191 synfig::ValueNode_Subtract::operator()(Time t)const
 192 {
 193         if(!ref_a || !ref_b)
 194                 throw runtime_error(strprintf("ValueNode_Subtract: %s",_("One or both of my parameters aren't set!")));
 195         if(get_type()==ValueBase::TYPE_ANGLE)
 196                 return ((*ref_a)(t).get(Angle())-(*ref_b)(t).get(Angle()))*(*scalar)(t).get(Real());
 197         if(get_type()==ValueBase::TYPE_COLOR)
 198                 return ((*ref_a)(t).get(Color())-(*ref_b)(t).get(Color()))*(*scalar)(t).get(Real());
 199         if(get_type()==ValueBase::TYPE_INTEGER)
 200                 return ((*ref_a)(t).get(int())-(*ref_b)(t).get(int()))*(*scalar)(t).get(Real());
 201         if(get_type()==ValueBase::TYPE_REAL)
 202                 return ((*ref_a)(t).get(Vector::value_type())-(*ref_b)(t).get(Vector::value_type()))*(*scalar)(t).get(Real());
 203         if(get_type()==ValueBase::TYPE_VECTOR)
 204                 return ((*ref_a)(t).get(Vector())-(*ref_b)(t).get(Vector()))*(*scalar)(t).get(Real());
 205
 206         synfig::error(get_id()+':'+strprintf(_("Cannot subtract types of %s and %s"),ValueBase::type_name(ref_a->get_type()).c_str(),ValueBase::type_name(ref_b->get_type()).c_str()));
 207         return ValueBase();
 208 }
 209
 210 bool
 211 ValueNode_Subtract::set_link_vfunc(int i,ValueNode::Handle x)
 212 {
 213         assert(i>=0 && i<3);
 214         switch(i)
 215         {
 216                 case 0:
 217                         if(set_lhs(x)) { signal_child_changed()(i);signal_value_changed()(); return true; }
 218                         else { return false; }
 219                 case 1:
 220                         if(set_rhs(x)) { signal_child_changed()(i);signal_value_changed()(); return true; }
 221                         else { return false; }
 222                 case 2:
 223                         scalar=x;
 224                         signal_child_changed()(i);signal_value_changed()();
 225                         return true;
 226         }
 227
 228         return false;
 229 }
 230
 231 ValueNode::LooseHandle
 232 ValueNode_Subtract::get_link_vfunc(int i)const
 233 {
 234         assert(i>=0 && i<3);
 235         switch(i)
 236         {
 237                 case 0:
 238                         return ref_a;
 239                 case 1:
 240                         return ref_b;
 241                 case 2:
 242                         return scalar;
 243         }
 244         return 0;
 245 }
 246
 247 int
 248 ValueNode_Subtract::link_count()const
 249 {
 250         return 3;
 251 }
 252
 253 String
 254 ValueNode_Subtract::link_local_name(int i)const
 255 {
 256         assert(i>=0 && i<3);
 257         switch(i)
 258         {
 259                 case 0:
 260                         return _("LHS");
 261                 case 1:
 262                         return _("RHS");
 263                 case 2:
 264                         return _("Scalar");
 265                 default:
 266                         return String();
 267         }
 268 }
 269
 270 String
 271 ValueNode_Subtract::link_name(int i)const
 272 {
 273         assert(i>=0 && i<3);
 274         switch(i)
 275         {
 276                 case 0:
 277                         return "lhs";
 278                 case 1:
 279                         return "rhs";
 280                 case 2:
 281                         return "scalar";
 282                 default:
 283                         return String();
 284         }
 285 }
 286
 287 int
 288 ValueNode_Subtract::get_link_index_from_name(const String &name)const
 289 {
 290         if(name=="lhs")
 291                 return 0;
 292         if(name=="rhs")
 293                 return 1;
 294         if(name=="scalar")
 295                 return 2;
 296         throw Exception::BadLinkName(name);
 297 }
 298
 299 String
 300 ValueNode_Subtract::get_name()const
 301 {
 302         return "subtract";
 303 }
 304
 305 String
 306 ValueNode_Subtract::get_local_name()const
 307 {
 308         return _("Subtract");
 309 }
 310
 311 bool
 312 ValueNode_Subtract::check_type(ValueBase::Type type)
 313 {
 314         return type==ValueBase::TYPE_ANGLE
 315                 || type==ValueBase::TYPE_COLOR
 316                 || type==ValueBase::TYPE_INTEGER
 317                 || type==ValueBase::TYPE_REAL
 318                 || type==ValueBase::TYPE_VECTOR;
 319 }