synfig-core/tags/synfig_0_61_06/src/synfig/valuenode_animated.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file valuenode_animated.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 <vector>
  33 #include <list>
  34 #include <stdexcept>
  35
  36 #include <cmath>
  37
  38 #include <ETL/bezier>
  39 #include <ETL/hermite>
  40 #include <ETL/spline>
  41 #include <ETL/handle>
  42 #include <ETL/misc>
  43
  44 #include <algorithm>
  45 #include <typeinfo>
  46
  47 #include "canvas.h"
  48 #include "general.h"
  49 #include "valuenode_animated.h"
  50 #include "valuenode_const.h"
  51 #include "exception.h"
  52 #include "gradient.h"
  53
  54 #endif
  55
  56 /* === U S I N G =========================================================== */
  57
  58 using namespace std;
  59 using namespace etl;
  60 using namespace synfig;
  61
  62 /* === M A C R O S ========================================================= */
  63
  64 // Fast binary search implementation
  65 /*
  66 template<typename I, typename T> inline I
  67 binary_find(I begin, I end, const T& value)
  68 {
  69         I iter(begin+(end-begin)/2);
  70
  71         while(end-begin>1 && !(*iter==value))
  72         {
  73                 ((*iter<value)?begin:end) = iter;
  74
  75                 iter = begin+(end-begin)/2;
  76         }
  77         return iter;
  78 }
  79 */
  80
  81 /*
  82 template<typename T> String tangent_info(T a, T b, T v)
  83 {
  84         return "...";
  85 }
  86
  87 String tangent_info(Vector a, Vector b, Vector v)
  88 {
  89         if(a==b)
  90                 return strprintf("(should be zero) T=[%f,%f], Pp=[%f,%f], Pn=[%f,%f]",v[0],v[1],a[0],a[1],b[0],b[1]);
  91         else
  92                 return strprintf("(should NOT be zero) T=[%f,%f], Pp=[%f,%f], Pn=[%f,%f]",v[0],v[1],a[0],a[1],b[0],b[1]);
  93 }
  94 */
  95
  96 template <class T>
  97 struct subtractor : public std::binary_function<T, T, T>
  98 {
  99         T operator()(const T &a,const T &b)const
 100         {
 101                 return a-b;
 102         }
 103 };
 104
 105 template <>
 106 struct subtractor<Angle> : public std::binary_function<Angle, Angle, Angle>
 107 {
 108         Angle operator()(const Angle &a,const Angle &b)const
 109         {
 110                 return a.dist(b);
 111         }
 112 };
 113
 114 template <class T>
 115 struct magnitude : public std::unary_function<float, T>
 116 {
 117         float operator()(const T &a)const
 118         {
 119                 return abs(a);
 120         }
 121 };
 122
 123 template <>
 124 struct magnitude<Angle> : public std::unary_function<float, Angle>
 125 {
 126         float operator()(const Angle &a)const
 127         {
 128                 return abs(Angle::rad(a).get());
 129         }
 130 };
 131
 132 template <>
 133 struct magnitude<Vector> : public std::unary_function<float, Vector>
 134 {
 135         float operator()(const Vector &a)const
 136         {
 137                 return a.mag();
 138         }
 139 };
 140
 141 template <>
 142 struct magnitude<Color> : public std::unary_function<float, Color>
 143 {
 144         float operator()(const Color &a)const
 145         {
 146                 return abs(a.get_y());
 147         }
 148 };
 149
 150
 151
 152
 153
 154 template <class T>
 155 struct is_angle_type
 156 {
 157         bool operator()()const
 158         {
 159                 return false;
 160         }
 161 };
 162
 163 template <>
 164 struct is_angle_type<Angle>
 165 {
 166         bool operator()()const
 167         {
 168                 return true;
 169         }
 170 };
 171
 172 /* === G L O B A L S ======================================================= */
 173
 174 /* === C L A S S E S ======================================================= */
 175
 176 template<typename T>
 177 class _Hermite : public synfig::ValueNode_Animated
 178 {
 179 public:
 180         typedef T value_type;
 181         affine_combo<value_type,Time> affine_combo_func;
 182         subtractor<value_type>  subtract_func;
 183         magnitude<value_type>   magnitude_func;
 184         is_angle_type<value_type>       is_angle;
 185 private:
 186         struct PathSegment
 187         {
 188                 is_angle_type<value_type>       is_angle;
 189                 subtractor<value_type>  subtract_func;
 190
 191                 mutable hermite<Time,Time> first;
 192                 mutable hermite<value_type,Time> second;
 193                 WaypointList::iterator start;
 194                 WaypointList::iterator end;
 195
 196                 value_type resolve(const Time &t)const
 197                 {
 198                         bool start_static(start->is_static());
 199                         bool end_static(end->is_static());
 200
 201                         if(!start_static || !end_static)
 202                         {
 203                                 //if(!start_static)
 204                                         second.p1()=start->get_value(t).get(value_type());
 205                                 if(start->get_after()==INTERPOLATION_CONSTANT || end->get_before()==INTERPOLATION_CONSTANT)
 206                                         return second.p1();
 207                                 //if(!end_static)
 208                                         second.p2()=end->get_value(t).get(value_type());
 209
 210                                 // At the moment, the only type of non-constant interpolation
 211                                 // that we support is linear.
 212                                 second.t1()=
 213                                 second.t2()=subtract_func(second.p2(),second.p1());
 214
 215                                 second.sync();
 216                         }
 217
 218                         return second(first(t));
 219                 }
 220         };
 221         typedef vector <
 222                 PathSegment
 223                 /*
 224                 pair <
 225                         hermite<Time,Time>,
 226                         hermite<value_type,Time>
 227                 >
 228                 */
 229         > curve_list_type;
 230
 231         curve_list_type curve_list;
 232
 233         // Bounds of this curve
 234         Time r,s;
 235
 236 public:
 237         ValueNode* clone(const GUID& deriv_guid)const
 238         {
 239                 { ValueNode* x(find_value_node(get_guid()^deriv_guid).get()); if(x)return x; }
 240                 _Hermite<T>* ret(new _Hermite<T>());
 241                 ret->set_guid(get_guid()^deriv_guid);
 242                 for(WaypointList::const_iterator iter=waypoint_list().begin();iter!=waypoint_list().end();++iter)
 243                         ret->add(iter->clone(deriv_guid));
 244                 return ret;
 245         }
 246
 247         _Hermite()
 248         {
 249                 set_type(ValueBase(value_type()).get_type());
 250         }
 251
 252         virtual WaypointList::iterator new_waypoint(Time t, ValueBase value)
 253         {
 254                 // Make sure we are getting data of the correct type
 255                 //if(data.type!=type)
 256                 //      return waypoint_list_type::iterator();
 257
 258                 try { find(t); throw Exception::BadTime(_("A waypoint already exists at this point in time")); } catch(Exception::NotFound) { };
 259                 Waypoint waypoint(value,t);
 260                 waypoint.set_parent_value_node(this);
 261
 262                 waypoint_list_.push_back(waypoint);
 263                 WaypointList::iterator ret=waypoint_list_.end();
 264                 --ret;
 265
 266                 if(is_angle())
 267                 {
 268                         ret->set_before(INTERPOLATION_LINEAR);
 269                         ret->set_after(INTERPOLATION_LINEAR);
 270                 }
 271
 272                 changed();
 273
 274                 return ret;
 275         }
 276
 277         virtual WaypointList::iterator new_waypoint(Time t, ValueNode::Handle value_node)
 278         {
 279                 // Make sure we are getting data of the correct type
 280                 //if(data.type!=type)
 281                 //      return waypoint_list_type::iterator();
 282                 try { find(t); throw Exception::BadTime(_("A waypoint already exists at this point in time")); } catch(Exception::NotFound) { };
 283
 284                 Waypoint waypoint(value_node,t);
 285                 waypoint.set_parent_value_node(this);
 286
 287                 waypoint_list_.push_back(waypoint);
 288                 WaypointList::iterator ret=waypoint_list_.end();
 289                 --ret;
 290
 291                 if(is_angle())
 292                 {
 293                         ret->set_before(INTERPOLATION_LINEAR);
 294                         ret->set_after(INTERPOLATION_LINEAR);
 295                 }
 296
 297                 changed();
 298
 299                 return ret;
 300         }
 301
 302         virtual void on_changed()
 303         {
 304                 ValueNode_Animated::on_changed();
 305
 306                 if(waypoint_list_.size()<=1)
 307                         return;
 308                 std::sort(waypoint_list_.begin(),waypoint_list_.end());
 309                 //waypoint_list_.sort();
 310
 311                 r=waypoint_list_.front().get_time();
 312                 s=waypoint_list_.back().get_time();
 313
 314                 curve_list.clear();
 315
 316                 WaypointList::iterator prev,iter,next=waypoint_list_.begin();
 317                 int i=0;
 318
 319                 for(iter=next++;iter!=waypoint_list_.end() && next!=waypoint_list_.end();prev=iter,iter=next++,i++)
 320                 {
 321                         typename curve_list_type::value_type curve;
 322                         WaypointList::iterator after_next(next);
 323                         ++after_next;
 324
 325                         curve.start=iter;
 326                         curve.end=next;
 327
 328                         // Set up the positions
 329                         curve.first.set_rs(iter->get_time(), next->get_time());
 330                         curve.second.set_rs(iter->get_time(), next->get_time());
 331
 332                         Waypoint::Interpolation iter_get_after(iter->get_after());
 333                         Waypoint::Interpolation next_get_after(next->get_after());
 334                         Waypoint::Interpolation iter_get_before(iter->get_before());
 335                         Waypoint::Interpolation next_get_before(next->get_before());
 336
 337                         if(is_angle())
 338                         {
 339                                 if(iter_get_after==INTERPOLATION_TCB)
 340                                         iter_get_after=INTERPOLATION_LINEAR;
 341                                 if(next_get_after==INTERPOLATION_TCB)
 342                                         next_get_after=INTERPOLATION_LINEAR;
 343                                 if(iter_get_before==INTERPOLATION_TCB)
 344                                         iter_get_before=INTERPOLATION_LINEAR;
 345                                 if(next_get_before==INTERPOLATION_TCB)
 346                                         next_get_before=INTERPOLATION_LINEAR;
 347                         }
 348
 349                         if(iter->is_static() && next->is_static())
 350                         {
 351                                 curve.second.p1()=iter->get_value().get(T());
 352                                 curve.second.p2()=next->get_value().get(T());
 353                                 if(iter_get_after==INTERPOLATION_CONSTANT || next_get_before==INTERPOLATION_CONSTANT)
 354                                 {
 355                                         // Sections must be constant on both sides.
 356                                         // NOTE: this is commented out because of some
 357                                         // user interface issues. Namely, if a section is
 358                                         // constant and the user turns off the constant on
 359                                         // one waypoint, this will end up turning it back on.
 360                                         // Confusing.
 361                                         //iter->get_after()=next->get_before()=INTERPOLATION_CONSTANT;
 362                                         curve.second.p1()=
 363                                         curve.second.p2()=iter->get_value().get(T());
 364                                         curve.second.t1()=
 365                                         curve.second.t2()=subtract_func(curve.second.p1(),curve.second.p2());
 366                                 }
 367                                 else
 368                                 {
 369                                         if(iter_get_after==INTERPOLATION_TCB && iter!=waypoint_list_.begin() && !is_angle())
 370                                         {
 371                                                 if(iter->get_before()!=INTERPOLATION_TCB && !curve_list.empty())
 372                                                 {
 373                                                         curve.second.t1()=curve_list.back().second.t2();
 374                                                 }
 375                                                 else
 376                                                 {
 377
 378                                                 const Real& t(iter->get_tension());             // Tension
 379                                                 const Real& c(iter->get_continuity());  // Continuity
 380                                                 const Real& b(iter->get_bias());                        // Bias
 381
 382                                                 // The folloing line works where the previous line fails.
 383                                                 value_type Pp; Pp=curve_list.back().second.p1();        // P_{i-1}
 384
 385                                                 const value_type& Pc(curve.second.p1());        // P_i
 386                                                 const value_type& Pn(curve.second.p2());        // P_{i+1}
 387
 388                                                 // TCB
 389                                                 value_type vect(static_cast<value_type>(subtract_func(Pc,Pp)*(((1.0-t)*(1.0+c)*(1.0+b))/2.0)+(Pn-Pc)*(((1.0-t)*(1.0-c)*(1.0-b))/2.0)));
 390
 391                                                 // Tension Only
 392                                                 //value_type vect=(value_type)((Pn-Pp)*(1.0-t));
 393
 394                                                 // Linear
 395                                                 //value_type vect=(value_type)(Pn-Pc);
 396
 397                                                 // Debugging stuff
 398                                                 //synfig::info("%d:t1: %s",i,tangent_info(Pp,Pn,vect).c_str());
 399
 400                                                 // Adjust for time
 401                                                 //vect=value_type(vect*(curve.second.get_dt()*2.0)/(curve.second.get_dt()+curve_list.back().second.get_dt()));
 402                                                 //vect=value_type(vect*(curve.second.get_dt())/(curve_list.back().second.get_dt()));
 403
 404                                                 curve.second.t1()=vect;
 405                                                 }
 406                                         }
 407                                         else if(
 408                                                 iter_get_after==INTERPOLATION_LINEAR || iter_get_after==INTERPOLATION_HALT ||
 409                                                 (iter_get_after==INTERPOLATION_TCB && iter==waypoint_list_.begin()))
 410                                         {
 411                                                 curve.second.t1()=subtract_func(curve.second.p2(),curve.second.p1());
 412                                         }
 413
 414                                         if(iter_get_before==INTERPOLATION_TCB && iter->get_after()!=INTERPOLATION_TCB && !curve_list.empty())
 415                                         {
 416                                                 curve_list.back().second.t2()=curve.second.t1();
 417                                                 curve_list.back().second.sync();
 418                                         }
 419
 420
 421                                         if(next_get_before==INTERPOLATION_TCB && after_next!=waypoint_list_.end()  && !is_angle())
 422                                         {
 423                                                 const Real &t(next->get_tension());             // Tension
 424                                                 const Real &c(next->get_continuity());  // Continuity
 425                                                 const Real &b(next->get_bias());                        // Bias
 426                                                 const value_type &Pp(curve.second.p1());        // P_{i-1}
 427                                                 const value_type &Pc(curve.second.p2());        // P_i
 428                                                 value_type Pn; Pn=after_next->get_value().get(T());     // P_{i+1}
 429
 430                                                 // TCB
 431                                                 value_type vect(static_cast<value_type>(subtract_func(Pc,Pp)*(((1.0-t)*(1.0-c)*(1.0+b))/2.0)+(Pn-Pc)*(((1.0-t)*(1.0+c)*(1.0-b))/2.0)));
 432
 433                                                 // Tension Only
 434                                                 //value_type vect((value_type)((Pn-Pp)*(1.0-t)));
 435
 436                                                 // Linear
 437                                                 //value_type vect=(value_type)(Pc-Pp);
 438
 439                                                 // Debugging stuff
 440                                                 //synfig::info("%d:t2: %s",i,tangent_info(Pp,Pn,vect).c_str());
 441
 442                                                 // Adjust for time
 443                                                 //vect=value_type(vect*(curve.second.get_dt()*2.0)/(curve.second.get_dt()+(after_next->get_time()-next->get_time())));
 444                                                 //vect=value_type(vect*(curve.second.get_dt()/((after_next->get_time()-next->get_time()))));
 445
 446                                                 curve.second.t2()=vect;
 447                                         }
 448                                         else if(
 449                                                 next_get_before==INTERPOLATION_LINEAR || next_get_before==INTERPOLATION_HALT ||
 450                                                 (next_get_before==INTERPOLATION_TCB && after_next==waypoint_list_.end()))
 451                                         {
 452                                                 curve.second.t2()=subtract_func(curve.second.p2(),curve.second.p1());
 453                                         }
 454
 455                                         // Adjust for time
 456                                         const float timeadjust(0.5);
 457
 458                                         if(!curve_list.empty())
 459                                                 curve.second.t1()*=(curve.second.get_dt()*(timeadjust+1))/(curve.second.get_dt()*timeadjust+curve_list.back().second.get_dt());
 460                                         if(after_next!=waypoint_list_.end())
 461                                                 curve.second.t2()*=(curve.second.get_dt()*(timeadjust+1))/(curve.second.get_dt()*timeadjust+(after_next->get_time()-next->get_time()));
 462
 463                                         if(iter_get_after==INTERPOLATION_HALT)
 464                                                 curve.second.t1()*=0;
 465
 466                                         if(next_get_before==INTERPOLATION_HALT)
 467                                                 curve.second.t2()*=0;
 468                                 }
 469                         }
 470
 471                         // Set up the time to the default stuff
 472                         curve.first.set_rs(iter->get_time(), next->get_time());
 473                         curve.first.p1()=iter->get_time();
 474                         curve.first.p2()=next->get_time();
 475                         curve.first.t1()=(curve.first.p2()-curve.first.p1())*(1.0f-iter->get_time_tension());
 476                         curve.first.t2()=(curve.first.p2()-curve.first.p1())*(1.0f-next->get_time_tension());
 477
 478
 479                         curve.first.sync();
 480                         curve.second.sync();
 481
 482                         curve_list.push_back(curve);
 483                 }
 484         }
 485
 486         virtual ValueBase operator()(Time t)const
 487         {
 488                 if(waypoint_list_.empty())
 489                         return value_type();    //! \todo Perhaps we should throw something here?
 490                 if(waypoint_list_.size()==1)
 491                         return waypoint_list_.front().get_value(t);
 492                 if(t<=r)
 493                         return waypoint_list_.front().get_value(t);
 494                 if(t>=s)
 495                         return waypoint_list_.back().get_value(t);
 496
 497                 typename curve_list_type::const_iterator iter;
 498
 499                 // This next line will set iter to the
 500                 // correct iterator for the given time.
 501                 for(iter=curve_list.begin();iter<curve_list.end() && t>=iter->first.get_s();++iter)
 502                         continue;
 503                 if(iter==curve_list.end())
 504                         return waypoint_list_.back().get_value(t);
 505                 return iter->resolve(t);
 506         }
 507 };
 508
 509
 510 template<typename T>
 511 class _Constant : public synfig::ValueNode_Animated
 512 {
 513 public:
 514         typedef T value_type;
 515
 516 private:
 517
 518         // Bounds of this curve
 519         Time r,s;
 520
 521 public:
 522         ValueNode* clone(const GUID& deriv_guid)const
 523         {
 524                 { ValueNode* x(find_value_node(get_guid()^deriv_guid).get()); if(x)return x; }
 525                 _Constant<T>* ret(new _Constant<T>());
 526                 ret->set_guid(get_guid()^deriv_guid);
 527                 for(WaypointList::const_iterator iter=waypoint_list().begin();iter!=waypoint_list().end();++iter)
 528                         ret->add(iter->clone(deriv_guid));
 529                 return ret;
 530         }
 531
 532         _Constant()
 533         {
 534                 set_type(ValueBase(value_type()).get_type());
 535         }
 536
 537         virtual WaypointList::iterator new_waypoint(Time t, ValueBase value)
 538         {
 539                 // Make sure we are getting data of the correct type
 540                 //if(data.type!=type)
 541                 //      return waypoint_list_type::iterator();
 542                 try { find(t); throw Exception::BadTime(_("A waypoint already exists at this point in time")); } catch(Exception::NotFound) { };
 543
 544                 Waypoint waypoint(value,t);
 545                 waypoint.set_parent_value_node(this);
 546
 547                 waypoint_list_.push_back(waypoint);
 548                 WaypointList::iterator ret=waypoint_list_.end();
 549                 --ret;
 550                 changed();
 551
 552                 return ret;
 553         }
 554
 555         virtual WaypointList::iterator new_waypoint(Time t, ValueNode::Handle value_node)
 556         {
 557                 // Make sure we are getting data of the correct type
 558                 //if(data.type!=type)
 559                 //      return waypoint_list_type::iterator();
 560                 try { find(t); throw Exception::BadTime(_("A waypoint already exists at this point in time")); } catch(Exception::NotFound) { };
 561
 562                 Waypoint waypoint(value_node,t);
 563                 waypoint.set_parent_value_node(this);
 564
 565                 waypoint_list_.push_back(waypoint);
 566                 WaypointList::iterator ret=waypoint_list_.end();
 567                 --ret;
 568                 changed();
 569
 570                 return ret;
 571         }
 572
 573         virtual void on_changed()
 574         {
 575                 ValueNode_Animated::on_changed();
 576
 577                 if(waypoint_list_.size()<=1)
 578                         return;
 579                 std::sort(waypoint_list_.begin(),waypoint_list_.end());
 580                 //waypoint_list_.sort();
 581                 r=waypoint_list_.front().get_time();
 582                 s=waypoint_list_.back().get_time();
 583
 584         }
 585
 586         virtual ValueBase operator()(Time t)const
 587         {
 588                 if(waypoint_list_.size()==1)
 589                         return waypoint_list_.front().get_value(t);
 590                 if(waypoint_list_.empty())
 591                         return value_type();
 592                 if(t<=r)
 593                         return waypoint_list_.front().get_value(t);
 594                 if(t>=s)
 595                         return waypoint_list_.back().get_value(t);
 596
 597                 typename WaypointList::const_iterator iter;
 598                 typename WaypointList::const_iterator next;
 599
 600                 // This next line will set iter to the
 601                 // correct iterator for the given time.
 602                 for(next=waypoint_list_.begin(),iter=next++;next!=waypoint_list_.end() && t>=next->get_time();iter=next++)
 603                         continue;
 604
 605                 return iter->get_value(t);
 606         }
 607 };
 608
 609 class _AnimBool : public synfig::ValueNode_Animated
 610 {
 611 public:
 612         typedef bool value_type;
 613
 614 private:
 615
 616         // Bounds of this curve
 617         Time r,s;
 618
 619 public:
 620         ValueNode* clone(const GUID& deriv_guid)const
 621         {
 622                 { ValueNode* x(find_value_node(get_guid()^deriv_guid).get()); if(x)return x; }
 623                 _AnimBool* ret(new _AnimBool());
 624                 ret->set_guid(get_guid()^deriv_guid);
 625                 for(WaypointList::const_iterator iter=waypoint_list().begin();iter!=waypoint_list().end();++iter)
 626                         ret->add(iter->clone(deriv_guid));
 627                 return ret;
 628         }
 629
 630         _AnimBool()
 631         {
 632                 set_type(ValueBase(value_type()).get_type());
 633         }
 634
 635         virtual WaypointList::iterator new_waypoint(Time t, ValueBase value)
 636         {
 637                 // Make sure we are getting data of the correct type
 638                 //if(data.type!=type)
 639                 //      return waypoint_list_type::iterator();
 640                 try { find(t); throw Exception::BadTime(_("A waypoint already exists at this point in time")); } catch(Exception::NotFound) { };
 641
 642
 643                 Waypoint waypoint(value,t);
 644                 waypoint.set_parent_value_node(this);
 645
 646                 waypoint_list_.push_back(waypoint);
 647                 WaypointList::iterator ret=waypoint_list_.end();
 648                 --ret;
 649                 changed();
 650
 651                 return ret;
 652         }
 653
 654         virtual WaypointList::iterator new_waypoint(Time t, ValueNode::Handle value_node)
 655         {
 656                 // Make sure we are getting data of the correct type
 657                 //if(data.type!=type)
 658                 //      return waypoint_list_type::iterator();
 659                 try { find(t); throw Exception::BadTime(_("A waypoint already exists at this point in time")); } catch(Exception::NotFound) { };
 660
 661                 Waypoint waypoint(value_node,t);
 662                 waypoint.set_parent_value_node(this);
 663
 664                 waypoint_list_.push_back(waypoint);
 665                 WaypointList::iterator ret=waypoint_list_.end();
 666                 --ret;
 667                 changed();
 668
 669                 return ret;
 670         }
 671
 672         virtual void on_changed()
 673         {
 674                 ValueNode_Animated::on_changed();
 675
 676                 if(waypoint_list_.size()<=1)
 677                         return;
 678                 std::sort(waypoint_list_.begin(),waypoint_list_.end());
 679                 //waypoint_list_.sort();
 680                 r=waypoint_list_.front().get_time();
 681                 s=waypoint_list_.back().get_time();
 682
 683         }
 684
 685         virtual ValueBase operator()(Time t)const
 686         {
 687                 if(waypoint_list_.size()==1)
 688                         return waypoint_list_.front().get_value(t);
 689                 if(waypoint_list_.empty())
 690                         return false;
 691                 if(t<r)
 692                         return waypoint_list_.front().get_value(t);
 693                 if(t>s)
 694                         return waypoint_list_.back().get_value(t);
 695
 696                 WaypointList::const_iterator iter;
 697                 WaypointList::const_iterator next;
 698
 699                 // This next line will set iter to the
 700                 // correct iterator for the given time.
 701                 for(next=waypoint_list_.begin(),iter=next++;next!=waypoint_list_.end() && t>=next->get_time();iter=next++)
 702                         if(iter->get_time()==t)
 703                                 return iter->get_value(t);
 704
 705                 if(iter->get_time()==t)
 706                         return iter->get_value(t);
 707
 708                 if(next!=waypoint_list_.end())
 709                         return iter->get_value(t).get(bool()) || next->get_value(t).get(bool());
 710                 return iter->get_value(t);
 711         }
 712 };
 713
 714 /* === M E T H O D S ======================================================= */
 715
 716 ValueNode_Animated::ValueNode_Animated()
 717 {
 718         DCAST_HACK_ENABLE();
 719 }
 720
 721 int
 722 ValueNode_Animated::find(const Time& begin,const Time& end,std::vector<Waypoint*>& selected)
 723 {
 724         Time curr_time(begin);
 725         int ret(0);
 726
 727         // try to grab first waypoint
 728         try
 729         {
 730                 WaypointList::iterator iter;
 731                 iter=find(curr_time);
 732                 selected.push_back(&*iter);
 733                 ret++;
 734         }
 735         catch(...) { }
 736
 737         try
 738         {
 739                 WaypointList::iterator iter;
 740                 while(true)
 741                 {
 742                         iter=find_next(curr_time);
 743                         curr_time=iter->get_time();
 744                         if(curr_time>=end)
 745                                 break;
 746                         selected.push_back(&*iter);
 747                         ret++;
 748                 }
 749         }
 750         catch(...) { }
 751
 752         return ret;
 753 }
 754
 755 /*
 756 void
 757 ValueNode_Animated::manipulate_time(const Time& old_begin,const Time& old_end,const Time& new_begin,const Time& new_end)
 758 {
 759 #define old_2_new(x)    (((x)-old_begin)/(old_end-old_begin)*(new_end-new_begin)+new_begin)
 760         std::vector<Waypoint*> selected;
 761         std::vector<Waypoint*>::iterator iter;
 762
 763         if(find(old_begin,old_end,selected))
 764         {
 765                 // check to make sure this operation is OK
 766                 for(iter=selected.begin();iter!=selected.end();++iter)
 767                 {
 768                         try
 769                         {
 770                                 Time new_time(old_2_new((*iter)->get_time()));
 771                                 if(new_time>=old_begin && new_time<old_end)
 772                                         continue;
 773                                 find(new_time);
 774                                 // If we found a waypoint already at that time, then
 775                                 // we need to abort
 776                                 throw Exception::BadTime(_("Waypoint Conflict"));
 777                         }
 778                         catch(Exception::NotFound) { }
 779
 780                         selected.back()->set_time(old_2_new(selected.back()->get_time()));
 781                         selected.pop_back();
 782                 }
 783
 784
 785                 while(!selected.empty())
 786                 {
 787                         selected.back()->set_time(old_2_new(selected.back()->get_time()));
 788                         selected.pop_back();
 789                 }
 790
 791                 changed();
 792         }
 793 #undef old_2_new
 794 }
 795 */
 796
 797 Waypoint
 798 ValueNode_Animated::new_waypoint_at_time(const Time& time)const
 799 {
 800         Waypoint waypoint;
 801         try
 802         {
 803                 // Trivial case, we are sitting on a waypoint
 804                 waypoint=*find(time);
 805                 waypoint.make_unique();
 806         }
 807         catch(...)
 808         {
 809                 if(waypoint_list().empty())
 810                 {
 811                         waypoint.set_value((*this)(time));
 812                 }
 813                 else
 814                 {
 815                         WaypointList::const_iterator prev;
 816                         WaypointList::const_iterator next;
 817
 818                         bool has_prev(false), has_next(false);
 819
 820                         try { prev=find_prev(time); has_prev=true; } catch(...) { }
 821                         try { next=find_next(time); has_next=true; } catch(...) { }
 822
 823                         /*
 824                         WaypointList::const_iterator closest;
 825
 826                         if(has_prev&&!has_next)
 827                                 closest=prev;
 828                         else if(has_next&&!has_prev)
 829                                 closest=next;
 830                         else if(time-prev->get_time()<next->get_time()-time)
 831                                 closest=prev;
 832                         else
 833                                 closest=next;
 834
 835                         for(iter=waypoint_list().begin();iter!=waypoint_list().end();++iter)
 836                         {
 837                                 const Real dist(abs(iter->get_time()-time));
 838                                 if(dist<abs(closest->get_time()-time))
 839                                         closest=iter;
 840                         }
 841                         */
 842
 843                         if(has_prev && !prev->is_static())
 844                                 waypoint.set_value_node(prev->get_value_node());
 845                         if(has_next && !next->is_static())
 846                                 waypoint.set_value_node(next->get_value_node());
 847                         else
 848                                 waypoint.set_value((*this)(time));
 849
 850                         /*if(has_prev)
 851                                 waypoint.set_after(prev->get_before());
 852                         if(has_next)
 853                                 waypoint.set_before(next->get_after());
 854                         */
 855                 }
 856         }
 857         waypoint.set_time(time);
 858         waypoint.set_parent_value_node(const_cast<ValueNode_Animated*>(this));
 859 //      synfig::info("waypoint.get_after()=set to %d",waypoint.get_after());
 860 //      synfig::info("waypoint.get_before()=set to %d",waypoint.get_before());
 861
 862         return waypoint;
 863 }
 864
 865 ValueNode_Animated::WaypointList::iterator
 866 ValueNode_Animated::find(const UniqueID &x)
 867 {
 868         ValueNode_Animated::WaypointList::iterator iter;
 869         iter=std::find(waypoint_list().begin(),waypoint_list().end(),x);
 870         if(iter==waypoint_list().end() || iter->get_uid()!=x.get_uid())
 871                 throw Exception::NotFound(strprintf("ValueNode_Animated::find(): Can't find UniqueID %d",x.get_uid()));
 872         return iter;
 873 }
 874
 875 ValueNode_Animated::WaypointList::const_iterator
 876 ValueNode_Animated::find(const UniqueID &x)const
 877 {
 878         return const_cast<ValueNode_Animated*>(this)->find(x);
 879         /*
 880         ValueNode_Animated::WaypointList::const_iterator iter;
 881         iter=std::find(waypoint_list().begin(),waypoint_list().end(),x);
 882         if(iter!=waypoint_list().end() && iter->get_uid()!=x.get_uid())
 883                 throw Exception::NotFound(strprintf("ValueNode_Animated::find()const: Can't find UniqueID %d",x.get_uid()));
 884         return iter;
 885         */
 886 }
 887
 888 ValueNode_Animated::WaypointList::iterator
 889 ValueNode_Animated::find(const Time &x)
 890 {
 891         WaypointList::iterator iter(binary_find(waypoint_list().begin(),waypoint_list().end(),x));
 892
 893         if(iter!=waypoint_list().end() && x.is_equal(iter->get_time()))
 894                 return iter;
 895
 896         throw Exception::NotFound(strprintf("ValueNode_Animated::find(): Can't find Waypoint at %s",x.get_string().c_str()));
 897 }
 898
 899 ValueNode_Animated::WaypointList::const_iterator
 900 ValueNode_Animated::find(const Time &x)const
 901 {
 902         return const_cast<ValueNode_Animated*>(this)->find(x);
 903         /*
 904         WaypointList::const_iterator iter(binary_find(waypoint_list().begin(),waypoint_list().end(),x));
 905
 906         if(iter!=waypoint_list().end() && x.is_equal(iter->get_time()))
 907                 return iter;
 908
 909         throw Exception::NotFound(strprintf("ValueNode_Animated::find(): Can't find Waypoint at %s",x.get_string().c_str()));
 910         */
 911 }
 912
 913 ValueNode_Animated::WaypointList::iterator
 914 ValueNode_Animated::find_next(const Time &x)
 915 {
 916         WaypointList::iterator iter(binary_find(waypoint_list().begin(),waypoint_list().end(),x));
 917
 918         if(iter!=waypoint_list().end())
 919         {
 920                 if(iter->get_time().is_more_than(x))
 921                         return iter;
 922                 ++iter;
 923                 if(iter!=waypoint_list().end() && iter->get_time().is_more_than(x))
 924                         return iter;
 925         }
 926
 927         throw Exception::NotFound(strprintf("ValueNode_Animated::find_next(): Can't find Waypoint after %s",x.get_string().c_str()));
 928 }
 929
 930 ValueNode_Animated::WaypointList::const_iterator
 931 ValueNode_Animated::find_next(const Time &x)const
 932 {
 933         return const_cast<ValueNode_Animated*>(this)->find_next(x);
 934         /*
 935         WaypointList::const_iterator iter(binary_find(waypoint_list().begin(),waypoint_list().end(),x));
 936
 937         if(iter!=waypoint_list().end())
 938         {
 939                 if(iter->get_time()-Time::epsilon()>x)
 940                         return iter;
 941                 ++iter;
 942                 if(iter!=waypoint_list().end() && iter->get_time()-Time::epsilon()>x)
 943                         return iter;
 944         }
 945
 946         throw Exception::NotFound(strprintf("ValueNode_Animated::find_next(): Can't find Waypoint after %s",x.get_string().c_str()));
 947 */
 948 }
 949
 950 ValueNode_Animated::WaypointList::iterator
 951 ValueNode_Animated::find_prev(const Time &x)
 952 {
 953         WaypointList::iterator iter(binary_find(waypoint_list().begin(),waypoint_list().end(),x));
 954
 955         if(iter!=waypoint_list().end())
 956         {
 957                 if(iter->get_time().is_less_than(x))
 958                         return iter;
 959                 if(iter!=waypoint_list().begin() && (--iter)->get_time().is_less_than(x))
 960                         return iter;
 961         }
 962
 963         throw Exception::NotFound(strprintf("ValueNode_Animated::find_prev(): Can't find Waypoint after %s",x.get_string().c_str()));
 964 }
 965
 966 ValueNode_Animated::WaypointList::const_iterator
 967 ValueNode_Animated::find_prev(const Time &x)const
 968 {
 969         return const_cast<ValueNode_Animated*>(this)->find_prev(x);
 970         /*
 971         WaypointList::const_iterator iter(binary_find(waypoint_list().begin(),waypoint_list().end(),x));
 972
 973         if(iter!=waypoint_list().end())
 974         {
 975                 if(iter->get_time()+Time::epsilon()<x)
 976                         return iter;
 977                 if(iter!=waypoint_list().begin() && (--iter)->get_time()+Time::epsilon()<x)
 978                         return iter;
 979         }
 980         throw Exception::NotFound(strprintf("ValueNode_Animated::find_prev(): Can't find Waypoint after %s",x.get_string().c_str()));
 981         */
 982 }
 983
 984 void
 985 ValueNode_Animated::erase(const UniqueID &x)
 986 {
 987         waypoint_list().erase(find(x));
 988 }
 989
 990 ValueNode_Animated::WaypointList::iterator
 991 ValueNode_Animated::add(const Waypoint &x)
 992 {
 993         Waypoint waypoint(x);
 994         waypoint.set_parent_value_node(this);
 995         waypoint_list_.push_back(waypoint);
 996         //assert(waypoint_list_.back().get_parent_value_node()==this);
 997         WaypointList::iterator ret=waypoint_list_.end();
 998         --ret;
 999         changed();
1000         return ret;
1001 }
1002
1003 void
1004 ValueNode_Animated::set_type(ValueBase::Type t)
1005 {
1006         ValueNode::set_type(t);
1007 }
1008
1009 ValueNode_Animated::Handle
1010 synfig::ValueNode_Animated::create(ValueBase::Type type)
1011 {
1012         switch(type)
1013         {
1014                 case ValueBase::TYPE_TIME:
1015                         return ValueNode_Animated::Handle(new _Hermite<Time>);
1016                 case ValueBase::TYPE_REAL:
1017                         return ValueNode_Animated::Handle(new _Hermite<Vector::value_type>);
1018                 case ValueBase::TYPE_INTEGER:
1019                         return ValueNode_Animated::Handle(new _Hermite<int>);
1020                 case ValueBase::TYPE_ANGLE:
1021                         return ValueNode_Animated::Handle(new _Hermite<Angle>);
1022                 case ValueBase::TYPE_VECTOR:
1023                         return ValueNode_Animated::Handle(new _Hermite<Vector>);
1024                 case ValueBase::TYPE_COLOR:
1025                         return ValueNode_Animated::Handle(new _Hermite<Color>);
1026
1027                 case ValueBase::TYPE_STRING:
1028                         return ValueNode_Animated::Handle(new _Constant<String>);
1029                 case ValueBase::TYPE_GRADIENT:
1030                         return ValueNode_Animated::Handle(new _Constant<Gradient>);
1031                 case ValueBase::TYPE_BOOL:
1032                         return ValueNode_Animated::Handle(new _AnimBool);
1033                 case ValueBase::TYPE_CANVAS:
1034                         return ValueNode_Animated::Handle(new _Constant<Canvas::LooseHandle>);
1035                 default:
1036                         throw
1037                                 Exception::BadType(strprintf(_("%s: You cannot use a %s in an animated ValueNode"),"synfig::ValueNode_Animated::create()",
1038                                         ValueBase::type_name(type).c_str())
1039                                 );
1040                         break;
1041         }
1042         return ValueNode_Animated::Handle();
1043 }
1044
1045 ValueNode_Animated::Handle
1046 ValueNode_Animated::create(const ValueBase& value, const Time& time)
1047 {
1048         return create(ValueNode::Handle(ValueNode_Const::create(value)),time);
1049 }
1050
1051 ValueNode_Animated::Handle
1052 ValueNode_Animated::create(ValueNode::Handle value_node, const Time& time)
1053 {
1054         ValueNode_Animated::Handle ret(create(value_node->get_type()));
1055         ret->new_waypoint(time,value_node);
1056         return ret;
1057 }
1058
1059 ValueNode_Animated::~ValueNode_Animated()
1060 {
1061 }
1062
1063 String
1064 ValueNode_Animated::get_name()const
1065 {
1066         return "animated";
1067 }
1068
1069 String
1070 ValueNode_Animated::get_local_name()const
1071 {
1072         return _("Animated");
1073 }
1074
1075 void ValueNode_Animated::get_times_vfunc(Node::time_set &set) const
1076 {
1077         //add all the way point times to the value node...
1078
1079         WaypointList::const_iterator    i = waypoint_list().begin(),
1080                                                                         end = waypoint_list().end();
1081
1082         for(; i != end; ++i)
1083         {
1084                 TimePoint t;
1085                 t.set_time(i->get_time());
1086                 t.set_before(i->get_before());
1087                 t.set_after(i->get_after());
1088                 t.set_guid(i->get_guid());
1089                 set.insert(t);
1090         }
1091 }
1092 struct timecmp
1093  {
1094         Time t;
1095
1096         timecmp(const Time &c) :t(c) {}
1097
1098         bool operator()(const Waypoint &rhs) const
1099         {
1100                 return t.is_equal(rhs.get_time());
1101         }
1102  };
1103
1104  ValueNode_Animated::findresult
1105  ValueNode_Animated::find_uid(const UniqueID &x)
1106  {
1107         findresult      f;
1108         f.second = false;
1109
1110         //search for it... and set the bool part of the return value to true if we found it!
1111         f.first = std::find(waypoint_list_.begin(), waypoint_list_.end(), x);
1112         if(f.first != waypoint_list_.end())
1113                 f.second = true;
1114
1115         return f;
1116  }
1117
1118  ValueNode_Animated::const_findresult
1119  ValueNode_Animated::find_uid(const UniqueID &x)const
1120  {
1121         const_findresult        f;
1122         f.second = false;
1123
1124         //search for it... and set the bool part of the return value to true if we found it!
1125         f.first = std::find(waypoint_list_.begin(), waypoint_list_.end(), x);
1126         if(f.first != waypoint_list_.end())
1127                 f.second = true;
1128
1129         return f;
1130  }
1131
1132  ValueNode_Animated::findresult
1133  ValueNode_Animated::find_time(const Time &x)
1134  {
1135         findresult      f;
1136         f.second = false;
1137
1138         //search for it... and set the bool part of the return value to true if we found it!
1139         f.first = std::find_if(waypoint_list_.begin(), waypoint_list_.end(), timecmp(x));
1140         if(f.first != waypoint_list_.end())
1141                 f.second = true;
1142
1143         return f;
1144  }
1145
1146 ValueNode_Animated::const_findresult
1147 ValueNode_Animated::find_time(const Time &x)const
1148 {
1149         const_findresult        f;
1150         f.second = false;
1151
1152         //search for it... and set the bool part of the return value to true if we found it!
1153         f.first = std::find_if(waypoint_list_.begin(), waypoint_list_.end(), timecmp(x));
1154         if(f.first != waypoint_list_.end())
1155                 f.second = true;
1156
1157         return f;
1158 }
1159
1160 void
1161 ValueNode_Animated::insert_time(const Time& location, const Time& delta)
1162 {
1163         if(!delta)
1164                 return;
1165         try
1166         {
1167                 WaypointList::iterator iter(find_next(location));
1168                 for(;iter!=waypoint_list().end();++iter)
1169                 {
1170                         iter->set_time(iter->get_time()+delta);
1171                 }
1172                 changed();
1173         }
1174         catch(Exception::NotFound) { }
1175 }