synfig-core/trunk/src/modules/example/filledrect.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file filledrect.cpp
   3 **      \brief Implementation of the "Rectangle" layer
   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 <synfig/string.h>
  33 #include <synfig/time.h>
  34 #include <synfig/context.h>
  35 #include <synfig/paramdesc.h>
  36 #include <synfig/renddesc.h>
  37 #include <synfig/surface.h>
  38 #include <synfig/value.h>
  39 #include <synfig/valuenode.h>
  40 #include <ETL/pen>
  41
  42 #include "filledrect.h"
  43
  44 #endif
  45
  46 /* === U S I N G =========================================================== */
  47
  48 using namespace etl;
  49 using namespace std;
  50 using namespace synfig;
  51
  52 /* === G L O B A L S ======================================================= */
  53
  54 SYNFIG_LAYER_INIT(FilledRect);
  55 SYNFIG_LAYER_SET_NAME(FilledRect,"rectangle");
  56 SYNFIG_LAYER_SET_LOCAL_NAME(FilledRect,N_("Rectangle"));
  57 SYNFIG_LAYER_SET_CATEGORY(FilledRect,N_("Geometry"));
  58 SYNFIG_LAYER_SET_VERSION(FilledRect,"0.1");
  59 SYNFIG_LAYER_SET_CVS_ID(FilledRect,"$Id$");
  60
  61 /* === P R O C E D U R E S ================================================= */
  62
  63 /* === M E T H O D S ======================================================= */
  64
  65 /* === E N T R Y P O I N T ================================================= */
  66
  67 FilledRect::FilledRect():
  68         Layer_Composite(1.0,Color::BLEND_STRAIGHT),
  69         color(Color::black()),
  70         point1(0,0),
  71         point2(1,1),
  72         feather_x(0),
  73         feather_y(0),
  74         bevel(0),
  75         bevCircle(0)
  76 {
  77 }
  78
  79 bool
  80 FilledRect::set_param(const String & param, const ValueBase &value)
  81 {
  82         IMPORT(color);
  83         IMPORT(point1);
  84         IMPORT(point2);
  85         IMPORT(feather_x);
  86         IMPORT(feather_y);
  87         IMPORT(bevel);
  88         IMPORT(bevCircle);
  89
  90         return Layer_Composite::set_param(param,value);
  91 }
  92
  93 ValueBase
  94 FilledRect::get_param(const String &param)const
  95 {
  96         EXPORT(color);
  97         EXPORT(point1);
  98         EXPORT(point2);
  99         EXPORT(feather_x);
 100         EXPORT(feather_y);
 101         EXPORT(bevel);
 102         EXPORT(bevCircle);
 103
 104         EXPORT_NAME();
 105         EXPORT_VERSION();
 106
 107         return Layer_Composite::get_param(param);
 108 }
 109
 110 Layer::Vocab
 111 FilledRect::get_param_vocab()const
 112 {
 113         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 114
 115         ret.push_back(ParamDesc("color")
 116                 .set_local_name(_("Color"))
 117         );
 118
 119         ret.push_back(ParamDesc("point1")
 120                 .set_local_name(_("Point 1"))
 121         );
 122
 123         ret.push_back(ParamDesc("point2")
 124                 .set_local_name(_("Point 2"))
 125         );
 126
 127         ret.push_back(ParamDesc("feather_x")
 128                 .set_local_name(_("Feather X"))
 129         );
 130
 131         ret.push_back(ParamDesc("feather_y")
 132                 .set_local_name(_("Feather Y"))
 133         );
 134
 135         ret.push_back(ParamDesc("bevel")
 136                 .set_local_name(_("Bevel"))
 137         );
 138
 139         ret.push_back(ParamDesc("bevCircle")
 140                 .set_local_name(_("Keep Bevel Circular"))
 141         );
 142
 143         return ret;
 144 }
 145
 146 bool
 147 FilledRect::get_color(const Point &pos, Color &out, Real &outamount) const
 148 {
 149         Point p[2] = {point1,point2};
 150         Real swap;
 151
 152         if(p[0][0] > p[1][0])
 153         {
 154                 swap = p[0][0];
 155                 p[0][0] = p[1][0];
 156                 p[1][0] = swap;
 157         }
 158
 159         if(p[0][1] > p[1][1])
 160         {
 161                 swap = p[0][1];
 162                 p[0][1] = p[1][1];
 163                 p[1][1] = swap;
 164         }
 165
 166         /*
 167         p[0][0] -= feather_x;
 168         p[1][0] += feather_x;
 169         p[0][1] -= feather_y;
 170         p[1][1] += feather_y;*/
 171         const Real      w = p[1][0] - p[0][0];
 172         const Real      h = p[1][1] - p[0][1];
 173
 174         if(pos[0] >= p[0][0] && pos[0] <= p[1][0] && pos[1] >= p[0][1] && pos[1] <= p[1][1])
 175         {
 176                 Real value = 1;
 177
 178                 if(feather_x > 0)
 179                 {
 180                         Real xdist = pos[0] - p[0][0];
 181                         xdist = min(xdist,p[1][0]-pos[0]);
 182
 183                         if(xdist < feather_x)
 184                         {
 185                                 value = xdist/feather_x;
 186                         }
 187                 }
 188
 189                 if(feather_y > 0)
 190                 {
 191                         Real ydist = pos[1]-p[0][1];
 192                         ydist = min(ydist,p[1][1]-pos[1]);
 193
 194                         if(ydist < feather_y)
 195                         {
 196                                 value = min(value,(ydist/feather_y));
 197                         }
 198                 }
 199
 200                 //if we're beveled then check with ellipse code...
 201                 if(bevel > 0)
 202                 {
 203                         const Real bev = (bevel > 1) ? 1 : bevel;
 204                         const Real bevx = bevCircle ? min(w*bev/2,h*bev/2) : w*bev/2;
 205                         const Real bevy = bevCircle ? min(w*bev/2,h*bev/2) : h*bev/2;;
 206
 207                         Vector v(0,0);
 208                         bool    in = false;
 209
 210                         //based on which quarter it is in (and because it's x/y symmetric) get a positive vector (x/y)
 211                         if(pos[0] < p[0][0] + bevx)
 212                         {
 213                                  if(pos[1] < p[0][1] + bevy)
 214                                  {
 215                                          v[0] = p[0][0] + bevx - pos[0];
 216                                          v[1] = p[0][1] + bevy - pos[1];
 217                                          in = true;
 218                                  }else if(pos[1] > p[1][1] - bevy)
 219                                  {
 220                                          v[0] = p[0][0] + bevx - pos[0];
 221                                          v[1] = pos[1] - (p[1][1] - bevy);
 222                                          in = true;
 223                                  }
 224                         }
 225                         else if(pos[0] > p[1][0] - bevx)
 226                         {
 227                                 if(pos[1] < p[0][1] + bevy)
 228                                  {
 229                                          v[0] = pos[0] - (p[1][0] - bevx);
 230                                          v[1] = p[0][1] + bevy - pos[1];
 231                                          in = true;
 232                                  }else if(pos[1] > p[1][1] - bevy)
 233                                  {
 234                                          v[0] = pos[0] - (p[1][0] - bevx);
 235                                          v[1] = pos[1] - (p[1][1] - bevy);
 236                                          in = true;
 237                                  }
 238                         }
 239
 240                         //if it's inside a bevelled block
 241                         if(in)
 242                         {
 243                                 const Vector scale(bevx,bevy);
 244
 245                                 Vector vc(v[0]/scale[0],v[1]/scale[1]);
 246                                 Real    d = vc.mag();
 247
 248                                 //if it's inside the ellipse
 249                                 if(d < 1)
 250                                 {
 251                                         Real val = atan2(vc[1],vc[0]);
 252                                         val /= (PI/2); //< will always be (0,pi/2) because both components are positive
 253
 254                                         Real fthx=1,fthy=1;
 255
 256                                         //change d into distance away from edge
 257                                         d = 1 - d;
 258
 259                                         if(feather_x > 0)
 260                                         {
 261                                                 if(scale[0] < feather_x)
 262                                                 {
 263                                                         fthy = scale[0]/feather_x;
 264                                                 }
 265
 266                                                 if(d*scale[0] < feather_x)
 267                                                 {
 268                                                         fthx = d*scale[0]/feather_x;
 269                                                 }
 270                                         }
 271
 272                                         if(feather_y > 0)
 273                                         {
 274                                                 if(scale[1] < feather_y)
 275                                                 {
 276                                                         fthx = min(fthx,scale[1]/feather_y);
 277                                                 }
 278
 279                                                 if(d*scale[1] < feather_y)
 280                                                 {
 281                                                         fthy = min(fthy,d*scale[1]/feather_y);
 282                                                 }
 283                                         }
 284
 285                                         //interpolate
 286                                         outamount = min(value,((1-val)*fthx + val*fthy)) * get_amount();
 287                                         out = color;
 288                                         return true;
 289
 290                                 }else return false;
 291                         }
 292                 }
 293
 294                 outamount = value * get_amount();
 295                 out = color;
 296
 297                 return true;
 298         }else
 299                 return false;
 300 }
 301
 302 Color
 303 FilledRect::get_color(Context context, const Point &pos)const
 304 {
 305         Color   clr;
 306         Real    amt;
 307
 308         if(get_color(pos,clr,amt))
 309         {
 310                 if(amt==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 311                         return clr;
 312                 else
 313                         return Color::blend(clr,context.get_color(pos),amt,get_blend_method());
 314         }
 315         else
 316                 return context.get_color(pos);
 317 }
 318
 319 bool
 320 FilledRect::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 321 {
 322         // Width and Height of a pixel
 323         const Point br(renddesc.get_br()), tl(renddesc.get_tl());
 324         const int w = renddesc.get_w(), h = renddesc.get_h();
 325
 326         Real    wpp = (br[0]-tl[0])/w;
 327         Real    hpp = (br[1]-tl[1])/h;
 328         //const Real    xneg = wpp<0?-1:1;
 329         //const Real    yneg = hpp<0?-1:1;
 330
 331         //the bounds of the rectangle
 332         Point p[2] = {point1,point2};
 333
 334         if((p[0][0] > p[1][0]) ^ wpp < 0)
 335         {
 336                 swap(p[0][0],p[1][0]);
 337         }
 338
 339         if((p[0][1] > p[1][1]) ^ hpp < 0)
 340         {
 341                 swap(p[0][1],p[1][1]);
 342         }
 343
 344         /*p[0][0] -= xneg*feather_x;
 345         p[1][0] += xneg*feather_x;
 346         p[0][1] -= yneg*feather_y;
 347         p[1][1] += yneg*feather_y;*/
 348
 349         //the integer coordinates
 350         int y_start = (int)((p[0][1] - tl[1])/hpp +.5);         //round start up
 351         int x_start = (int)((p[0][0] - tl[0])/wpp +.5);
 352         int y_end = (int)((p[1][1] - tl[1])/hpp +.5);   //and ends up
 353         int x_end =     (int)((p[1][0] - tl[0])/wpp +.5);
 354
 355         y_start = max(0,y_start);
 356         x_start = max(0,x_start);
 357         y_end = min(h,y_end);
 358         x_end = min(w,x_end);
 359
 360         SuperCallback supercb(cb,0,9000,10000);
 361
 362         if(y_start >= h || x_start > w  || x_end < 0 || y_end < 0)
 363         {
 364                 if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 365                 {
 366                         if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 367                         return false;
 368                 }
 369
 370                 return true;
 371         }
 372
 373         Real xf_start = tl[0] + x_start*wpp;
 374         Point pos(xf_start,tl[1] + y_start*hpp);
 375
 376         Color   clr = Color::black();
 377         Real    amt;
 378
 379         if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 380         {
 381                 if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 382                 return false;
 383         }
 384
 385         for(int y = y_start; y < y_end; y++, pos[1] += hpp)
 386         {
 387                 pos[0] = xf_start;
 388                 for(int x = x_start; x < x_end; x++, pos[0] += wpp)
 389                 {
 390                         if(get_color(pos,clr,amt))
 391                         {
 392                                 if(amt==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 393                                         (*surface)[y][x] = clr;
 394                                 else
 395                                         (*surface)[y][x] = Color::blend(clr,(*surface)[y][x],amt,get_blend_method());
 396                         }
 397                 }
 398         }
 399
 400         return true;
 401
 402 #if     0
 403         //faster version but much more complex
 404         //the floating point
 405         Real y1,y2,y3;
 406         Real x1,x2,x3;
 407         Real dx1,dx2; //reversed in 3rd y section, not used in 2nd
 408
 409         //the transparent
 410         Real fx = 0, fy = 0;
 411         Real dfx,dfy;
 412
 413         //Get the slopes of the lines we need to worry about
 414         if(feather_x)
 415         {
 416                 dfx = 1/(fxsize);
 417
 418                 if(fxsize*2 > xfw)
 419                 {
 420                         x1 = xfw/2;
 421                         x2 = 0;
 422                         x3 = xfw;
 423                 }else
 424                 {
 425                         x1 = fxsize;
 426                         x2 = xfw - fxsize;
 427                         x3 = xfw;
 428                 }
 429         }else
 430         {
 431                 fx = 1;
 432                 dfx = 0;
 433                 x1=0;
 434                 x2=xfw;
 435                 x3=0;
 436         }
 437
 438         if(feather_y)
 439         {
 440                 dfy = 1/(fysize);
 441
 442                 if(fysize*2 > yfh)
 443                 {
 444                         y1 = yfh/2;
 445                         y2 = 0;
 446                         y3 = yfh;
 447                 }else
 448                 {
 449                         y1 = fysize;
 450                         y2 = yfh - fysize;
 451                         y3 = yfh;
 452                 }
 453
 454                 dx1 = ph*feather_x/feather_y;
 455                 dx2 = -2*dx1;
 456
 457         }else
 458         {
 459                 fy = 1;
 460                 dfy = 0;
 461                 y1=0;
 462                 y2=yfh;
 463                 y3=0;
 464         }
 465
 466         fy = yf*dfy;
 467
 468         int x,y;
 469         Real value = 0;
 470         SuperCallback supercb(cb,0,9000,10000);
 471         Surface::pen    p;
 472
 473         Real tx1 = 0,tx2 =
 474         for(y = y_start;yf < y1; y++,yf++,fy+=dfy, tx1+=dx1)
 475         {
 476                 fx = xf*dfx;
 477
 478                 p = surface->get_pen(x_start,y);
 479                 for(; xf < x1; xf++,p.inc_x(), fx+=dfx)
 480                 {
 481                         //we are in the x portion... use fx
 482                         value = fx*get_amount();
 483                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 484                                 p.put_value(color);
 485                         else
 486                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 487                 }
 488
 489                 for(;xf < x2; xf++,p.inc_x())
 490                 {
 491                         //we are now in y... use fy
 492                         value = fy*get_amount();
 493                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 494                                 p.put_value(color);
 495                         else
 496                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 497                 }
 498
 499                 fx = xfw?(xfw - xf)/xfw:1;
 500                 for(;xf < x3 && ; xf++,p.inc_x(), fx-=dfx)
 501                 {
 502                         //we are in the x portion... use fx
 503                         value = max(0,fx*get_amount());
 504                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 505                                 p.put_value(color);
 506                         else
 507                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 508                 }
 509         }
 510
 511         x1 =
 512         for(;fy < 1.0; y++,yf++,fy+=dfy)
 513         {
 514                 fx = xf*dfx;
 515
 516                 p = surface->get_pen(x_start,y);
 517                 for(; xf < x1; xf++,p.inc_x(), fx+=dfx)
 518                 {
 519                         //we are in the x portion... use fx
 520                         value = fx*get_amount();
 521                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 522                                 p.put_value(color);
 523                         else
 524                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 525                 }
 526
 527                 for(;xf < x2; xf++,p.inc_x())
 528                 {
 529                         //we are now in y... use fy
 530                         value = fy*get_amount();
 531                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 532                                 p.put_value(color);
 533                         else
 534                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 535                 }
 536
 537                 fx = xfw?(xfw - xf)/xfw:1;
 538                 for(;xf < x3 && ; xf++,p.inc_x(), fx-=dfx)
 539                 {
 540                         //we are in the x portion... use fx
 541                         value = max(0,fx*get_amount());
 542                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 543                                 p.put_value(color);
 544                         else
 545                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 546                 }
 547         }
 548
 549         for()
 550         {
 551                 for(int x = x_start; x < x_end; x++)
 552                 {
 553
 554                 }
 555         }
 556
 557 #endif
 558
 559         // Mark our progress as finished
 560         if(cb && !cb->amount_complete(10000,10000))
 561                 return false;
 562
 563         return true;
 564 }