synfig-core/tags/synfig_0_61_03/synfig-core/src/synfig/valuenode_subtract.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenode_subtract.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id: valuenode_subtract.cpp,v 1.1.1.1 2005/01/04 01:23:15 darco Exp $
   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_VECTOR:
  79         case ValueBase::TYPE_REAL:
  80         case ValueBase::TYPE_INTEGER:
  81         case ValueBase::TYPE_ANGLE:
  82                 value_node->set_link("rhs",ValueNode_Const::create(ValueBase(id)));
  83                 value_node->set_link("lhs",ValueNode_Const::create(ValueBase(id)));
  84                 assert(value_node->get_rhs()->get_type()==id);
  85                 assert(value_node->get_lhs()->get_type()==id);
  86                 break;
  87         default:
  88                 assert(0);
  89                 throw runtime_error("synfig::ValueNode_Subtract:Bad type "+ValueBase::type_name(id));
  90         }
  91         assert(value_node->get_type()==id);
  92
  93         return value_node;
  94 }
  95
  96 synfig::ValueNode_Subtract::~ValueNode_Subtract()
  97 {
  98         unlink_all();
  99 }
 100
 101 void
 102 ValueNode_Subtract::set_scalar(Real x)
 103 {
 104         set_link("scalar",ValueNode_Const::create(x));
 105 }
 106
 107 bool
 108 synfig::ValueNode_Subtract::set_scalar(ValueNode::Handle x)
 109 {
 110         if(x->get_type()!=ValueBase::TYPE_REAL&& !PlaceholderValueNode::Handle::cast_dynamic(x))
 111                 return false;
 112         scalar=x;
 113         return true;
 114 }
 115
 116 bool
 117 synfig::ValueNode_Subtract::set_lhs(ValueNode::Handle a)
 118 {
 119         ref_a=a;
 120
 121         if(PlaceholderValueNode::Handle::cast_dynamic(a))
 122                 return true;
 123
 124         if(!ref_a || !ref_b)
 125                 set_type(ValueBase::TYPE_NIL);
 126         else
 127         if(ref_a->get_type()==ValueBase::TYPE_VECTOR && ref_a->get_type()==ValueBase::TYPE_VECTOR)
 128                 set_type(ValueBase::TYPE_VECTOR);
 129         else
 130         if(ref_a->get_type()==ValueBase::TYPE_REAL && ref_a->get_type()==ValueBase::TYPE_REAL)
 131                 set_type(ValueBase::TYPE_REAL);
 132         else
 133         if(ref_a->get_type()==ValueBase::TYPE_INTEGER && ref_a->get_type()==ValueBase::TYPE_INTEGER)
 134                 set_type(ValueBase::TYPE_INTEGER);
 135         else
 136         if(ref_a->get_type()==ValueBase::TYPE_ANGLE && ref_a->get_type()==ValueBase::TYPE_ANGLE)
 137                 set_type(ValueBase::TYPE_ANGLE);
 138         else
 139         if(ref_a->get_type()==ValueBase::TYPE_COLOR && ref_a->get_type()==ValueBase::TYPE_COLOR)
 140                 set_type(ValueBase::TYPE_COLOR);
 141         else
 142         {
 143                 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()));
 144                 set_type(ValueBase::TYPE_NIL);
 145         }
 146
 147         return true;
 148 }
 149
 150 bool
 151 synfig::ValueNode_Subtract::set_rhs(ValueNode::Handle b)
 152 {
 153         ref_b=b;
 154
 155         if(PlaceholderValueNode::Handle::cast_dynamic(b))
 156                 return true;
 157
 158         if(!ref_a || !ref_b)
 159                 set_type(ValueBase::TYPE_NIL);
 160         else
 161         if(ref_a->get_type()==ValueBase::TYPE_VECTOR && ref_a->get_type()==ValueBase::TYPE_VECTOR)
 162                 set_type(ValueBase::TYPE_VECTOR);
 163         else
 164         if(ref_a->get_type()==ValueBase::TYPE_REAL && ref_a->get_type()==ValueBase::TYPE_REAL)
 165                 set_type(ValueBase::TYPE_REAL);
 166         else
 167         if(ref_a->get_type()==ValueBase::TYPE_INTEGER && ref_a->get_type()==ValueBase::TYPE_INTEGER)
 168                 set_type(ValueBase::TYPE_INTEGER);
 169         else
 170         if(ref_a->get_type()==ValueBase::TYPE_ANGLE && ref_a->get_type()==ValueBase::TYPE_ANGLE)
 171                 set_type(ValueBase::TYPE_ANGLE);
 172         else
 173         if(ref_a->get_type()==ValueBase::TYPE_COLOR && ref_a->get_type()==ValueBase::TYPE_COLOR)
 174                 set_type(ValueBase::TYPE_COLOR);
 175         else
 176         {
 177                 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()));
 178                 set_type(ValueBase::TYPE_NIL);
 179         }
 180
 181         return true;
 182 }
 183
 184 synfig::ValueBase
 185 synfig::ValueNode_Subtract::operator()(Time t)const
 186 {
 187         if(!ref_a || !ref_b)
 188                 throw runtime_error(strprintf("ValueNode_Subtract: %s",_("One or both of my parameters aren't set!")));
 189         else
 190         if(get_type()==ValueBase::TYPE_VECTOR)
 191                 return ((*ref_a)(t).get(Vector())-(*ref_b)(t).get(Vector()))*(*scalar)(t).get(Real());
 192         else
 193         if(get_type()==ValueBase::TYPE_REAL)
 194                 return ((*ref_a)(t).get(Vector::value_type())-(*ref_b)(t).get(Vector::value_type()))*(*scalar)(t).get(Real());
 195         else
 196         if(get_type()==ValueBase::TYPE_INTEGER)
 197                 return ((*ref_a)(t).get(int())-(*ref_b)(t).get(int()))*(*scalar)(t).get(Real());
 198         else
 199         if(get_type()==ValueBase::TYPE_ANGLE)
 200                 return ((*ref_a)(t).get(Angle())-(*ref_b)(t).get(Angle()))*(*scalar)(t).get(Real());
 201         else
 202         if(get_type()==ValueBase::TYPE_COLOR)
 203                 return ((*ref_a)(t).get(Color())-(*ref_b)(t).get(Color()))*(*scalar)(t).get(Real());
 204
 205         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()));
 206         return ValueBase();
 207 }
 208
 209 bool
 210 ValueNode_Subtract::set_link_vfunc(int i,ValueNode::Handle x)
 211 {
 212         assert(i>=0 && i<3);
 213         switch(i)
 214         {
 215                 case 0:
 216                         if(set_lhs(x)) { signal_child_changed()(i);signal_value_changed()(); return true; }
 217                         else { return false; }
 218                 case 1:
 219                         if(set_rhs(x)) { signal_child_changed()(i);signal_value_changed()(); return true; }
 220                         else { return false; }
 221                 case 2:
 222                         scalar=x;
 223                         signal_child_changed()(i);signal_value_changed()();
 224                         return true;
 225         }
 226
 227         return false;
 228 }
 229
 230 ValueNode::LooseHandle
 231 ValueNode_Subtract::get_link_vfunc(int i)const
 232 {
 233         assert(i>=0 && i<3);
 234         switch(i)
 235         {
 236                 case 0:
 237                         return ref_a;
 238                 case 1:
 239                         return ref_b;
 240                 case 2:
 241                         return scalar;
 242         }
 243         return 0;
 244 }
 245
 246 int
 247 ValueNode_Subtract::link_count()const
 248 {
 249         return 3;
 250 }
 251
 252 String
 253 ValueNode_Subtract::link_local_name(int i)const
 254 {
 255         assert(i>=0 && i<3);
 256         switch(i)
 257         {
 258                 case 0:
 259                         return _("LHS");
 260                 case 1:
 261                         return _("RHS");
 262                 case 2:
 263                         return _("Scalar");
 264         }
 265         return String();
 266 }
 267
 268 String
 269 ValueNode_Subtract::link_name(int i)const
 270 {
 271         assert(i>=0 && i<3);
 272         switch(i)
 273         {
 274                 case 0:
 275                         return "lhs";
 276                 case 1:
 277                         return "rhs";
 278                 case 2:
 279                         return "scalar";
 280         }
 281         return String();
 282 }
 283
 284 int
 285 ValueNode_Subtract::get_link_index_from_name(const String &name)const
 286 {
 287         if(name=="lhs")
 288                 return 0;
 289         if(name=="rhs")
 290                 return 1;
 291         if(name=="scalar")
 292                 return 2;
 293         throw Exception::BadLinkName(name);
 294 }
 295
 296 String
 297 ValueNode_Subtract::get_name()const
 298 {
 299         return "subtract";
 300 }
 301
 302 String
 303 ValueNode_Subtract::get_local_name()const
 304 {
 305         return _("Subtract");
 306 }
 307
 308 bool
 309 ValueNode_Subtract::check_type(ValueBase::Type type)
 310 {
 311         return type==ValueBase::TYPE_VECTOR
 312                 || type==ValueBase::TYPE_REAL
 313                 || type==ValueBase::TYPE_INTEGER
 314                 || type==ValueBase::TYPE_COLOR
 315                 || type==ValueBase::TYPE_ANGLE;
 316 }