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