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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file filledrect.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id: filledrect.cpp,v 1.1.1.1 2005/01/04 01:23:09 darco Exp $
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002 Robert B. Quattlebaum Jr.
   9 **
  10 **      This software and associated documentation
  11 **      are CONFIDENTIAL and PROPRIETARY property of
  12 **      the above-mentioned copyright holder.
  13 **
  14 **      You may not copy, print, publish, or in any
  15 **      other way distribute this software without
  16 **      a prior written agreement with
  17 **      the copyright holder.
  18 **      \endlegal
  19 */
  20 /* ========================================================================= */
  21
  22 /* === H E A D E R S ======================================================= */
  23
  24 #ifdef USING_PCH
  25 #       include "pch.h"
  26 #else
  27 #ifdef HAVE_CONFIG_H
  28 #       include <config.h>
  29 #endif
  30
  31 #include <synfig/string.h>
  32 #include <synfig/time.h>
  33 #include <synfig/context.h>
  34 #include <synfig/paramdesc.h>
  35 #include <synfig/renddesc.h>
  36 #include <synfig/surface.h>
  37 #include <synfig/value.h>
  38 #include <synfig/valuenode.h>
  39 #include <ETL/pen>
  40
  41 #include "filledrect.h"
  42
  43 #endif
  44
  45 /* === U S I N G =========================================================== */
  46
  47 using namespace etl;
  48 using namespace std;
  49 using namespace synfig;
  50
  51 /* === G L O B A L S ======================================================= */
  52
  53 SYNFIG_LAYER_INIT(FilledRect);
  54 SYNFIG_LAYER_SET_NAME(FilledRect,"rectangle");
  55 SYNFIG_LAYER_SET_LOCAL_NAME(FilledRect,_("Rectangle"));
  56 SYNFIG_LAYER_SET_CATEGORY(FilledRect,_("Geometry"));
  57 SYNFIG_LAYER_SET_VERSION(FilledRect,"0.1");
  58 SYNFIG_LAYER_SET_CVS_ID(FilledRect,"$Id: filledrect.cpp,v 1.1.1.1 2005/01/04 01:23:09 darco Exp $");
  59
  60 /* === P R O C E D U R E S ================================================= */
  61
  62 /* === M E T H O D S ======================================================= */
  63
  64 /* === E N T R Y P O I N T ================================================= */
  65
  66 FilledRect::FilledRect():
  67         Layer_Composite(1.0,Color::BLEND_STRAIGHT),
  68         color(Color::black()),
  69         point1(0,0),
  70         point2(1,1),
  71         feather_x(0),
  72         feather_y(0),
  73         bevel(0),
  74         bevCircle(0)
  75 {
  76 }
  77
  78 bool
  79 FilledRect::set_param(const String & param, const ValueBase &value)
  80 {
  81         IMPORT(color);
  82         IMPORT(point1);
  83         IMPORT(point2);
  84         IMPORT(feather_x);
  85         IMPORT(feather_y);
  86         IMPORT(bevel);
  87         IMPORT(bevCircle);
  88
  89         return Layer_Composite::set_param(param,value);
  90 }
  91
  92 ValueBase
  93 FilledRect::get_param(const String &param)const
  94 {
  95         EXPORT(color);
  96         EXPORT(point1);
  97         EXPORT(point2);
  98         EXPORT(feather_x);
  99         EXPORT(feather_y);
 100         EXPORT(bevel);
 101         EXPORT(bevCircle);
 102
 103         EXPORT_NAME();
 104         EXPORT_VERSION();
 105
 106         return Layer_Composite::get_param(param);
 107 }
 108
 109 Layer::Vocab
 110 FilledRect::get_param_vocab()const
 111 {
 112         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 113
 114         ret.push_back(ParamDesc("color")
 115                 .set_local_name(_("Color"))
 116         );
 117
 118         ret.push_back(ParamDesc("point1")
 119                 .set_local_name(_("Point 1"))
 120         );
 121
 122         ret.push_back(ParamDesc("point2")
 123                 .set_local_name(_("Point 2"))
 124         );
 125
 126         ret.push_back(ParamDesc("feather_x")
 127                 .set_local_name(_("Feather X"))
 128         );
 129
 130         ret.push_back(ParamDesc("feather_y")
 131                 .set_local_name(_("Feather Y"))
 132         );
 133
 134         ret.push_back(ParamDesc("bevel")
 135                 .set_local_name(_("Bevel"))
 136         );
 137
 138         ret.push_back(ParamDesc("bevCircle")
 139                 .set_local_name(_("Keep Bevel Circular"))
 140         );
 141
 142         return ret;
 143 }
 144
 145 bool
 146 FilledRect::get_color(const Point &pos, Color &out, Real &outamount) const
 147 {
 148         Point p[2] = {point1,point2};
 149         Real swap;
 150
 151         if(p[0][0] > p[1][0])
 152         {
 153                 swap = p[0][0];
 154                 p[0][0] = p[1][0];
 155                 p[1][0] = swap;
 156         }
 157
 158         if(p[0][1] > p[1][1])
 159         {
 160                 swap = p[0][1];
 161                 p[0][1] = p[1][1];
 162                 p[1][1] = swap;
 163         }
 164
 165         /*
 166         p[0][0] -= feather_x;
 167         p[1][0] += feather_x;
 168         p[0][1] -= feather_y;
 169         p[1][1] += feather_y;*/
 170         const Real      w = p[1][0] - p[0][0];
 171         const Real      h = p[1][1] - p[0][1];
 172
 173         if(pos[0] >= p[0][0] && pos[0] <= p[1][0] && pos[1] >= p[0][1] && pos[1] <= p[1][1])
 174         {
 175                 Real value = 1;
 176
 177                 if(feather_x > 0)
 178                 {
 179                         Real xdist = pos[0] - p[0][0];
 180                         xdist = min(xdist,p[1][0]-pos[0]);
 181
 182                         if(xdist < feather_x)
 183                         {
 184                                 value = xdist/feather_x;
 185                         }
 186                 }
 187
 188                 if(feather_y > 0)
 189                 {
 190                         Real ydist = pos[1]-p[0][1];
 191                         ydist = min(ydist,p[1][1]-pos[1]);
 192
 193                         if(ydist < feather_y)
 194                         {
 195                                 value = min(value,(ydist/feather_y));
 196                         }
 197                 }
 198
 199                 //if we're beveled then check with ellipse code...
 200                 if(bevel > 0)
 201                 {
 202                         const Real bev = (bevel > 1) ? 1 : bevel;
 203                         const Real bevx = bevCircle ? min(w*bev/2,h*bev/2) : w*bev/2;
 204                         const Real bevy = bevCircle ? min(w*bev/2,h*bev/2) : h*bev/2;;
 205
 206                         Vector v(0,0);
 207                         bool    in = false;
 208
 209                         //based on which quarter it is in (and because it's x/y symmetric) get a positive vector (x/y)
 210                         if(pos[0] < p[0][0] + bevx)
 211                         {
 212                                  if(pos[1] < p[0][1] + bevy)
 213                                  {
 214                                          v[0] = p[0][0] + bevx - pos[0];
 215                                          v[1] = p[0][1] + bevy - pos[1];
 216                                          in = true;
 217                                  }else if(pos[1] > p[1][1] - bevy)
 218                                  {
 219                                          v[0] = p[0][0] + bevx - pos[0];
 220                                          v[1] = pos[1] - (p[1][1] - bevy);
 221                                          in = true;
 222                                  }
 223                         }
 224                         else if(pos[0] > p[1][0] - bevx)
 225                         {
 226                                 if(pos[1] < p[0][1] + bevy)
 227                                  {
 228                                          v[0] = pos[0] - (p[1][0] - bevx);
 229                                          v[1] = p[0][1] + bevy - pos[1];
 230                                          in = true;
 231                                  }else if(pos[1] > p[1][1] - bevy)
 232                                  {
 233                                          v[0] = pos[0] - (p[1][0] - bevx);
 234                                          v[1] = pos[1] - (p[1][1] - bevy);
 235                                          in = true;
 236                                  }
 237                         }
 238
 239                         //if it's inside a bevelled block
 240                         if(in)
 241                         {
 242                                 const Vector scale(bevx,bevy);
 243
 244                                 Vector vc(v[0]/scale[0],v[1]/scale[1]);
 245                                 Real    d = vc.mag();
 246
 247                                 //if it's inside the ellipse
 248                                 if(d < 1)
 249                                 {
 250                                         Real val = atan2(vc[1],vc[0]);
 251                                         val /= (PI/2); //< will always be (0,pi/2) because both components are positive
 252
 253                                         Real fthx=1,fthy=1;
 254
 255                                         //change d into distance away from edge
 256                                         d = 1 - d;
 257
 258                                         if(feather_x > 0)
 259                                         {
 260                                                 if(scale[0] < feather_x)
 261                                                 {
 262                                                         fthy = scale[0]/feather_x;
 263                                                 }
 264
 265                                                 if(d*scale[0] < feather_x)
 266                                                 {
 267                                                         fthx = d*scale[0]/feather_x;
 268                                                 }
 269                                         }
 270
 271                                         if(feather_y > 0)
 272                                         {
 273                                                 if(scale[1] < feather_y)
 274                                                 {
 275                                                         fthx = min(fthx,scale[1]/feather_y);
 276                                                 }
 277
 278                                                 if(d*scale[1] < feather_y)
 279                                                 {
 280                                                         fthy = min(fthy,d*scale[1]/feather_y);
 281                                                 }
 282                                         }
 283
 284                                         //interpolate
 285                                         outamount = min(value,((1-val)*fthx + val*fthy)) * get_amount();
 286                                         out = color;
 287                                         return true;
 288
 289                                 }else return false;
 290                         }
 291                 }
 292
 293                 outamount = value * get_amount();
 294                 out = color;
 295
 296                 return true;
 297         }else
 298                 return false;
 299 }
 300
 301 Color
 302 FilledRect::get_color(Context context, const Point &pos)const
 303 {
 304         Color   clr;
 305         Real    amt;
 306
 307         if(get_color(pos,clr,amt))
 308         {
 309                 if(amt==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 310                         return clr;
 311                 else
 312                         return Color::blend(clr,context.get_color(pos),amt,get_blend_method());
 313         }
 314         else
 315                 return context.get_color(pos);
 316 }
 317
 318 bool
 319 FilledRect::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 320 {
 321         // Width and Height of a pixel
 322         const Point br(renddesc.get_br()), tl(renddesc.get_tl());
 323         const int w = renddesc.get_w(), h = renddesc.get_h();
 324
 325         Real    wpp = (br[0]-tl[0])/w;
 326         Real    hpp = (br[1]-tl[1])/h;
 327         //const Real    xneg = wpp<0?-1:1;
 328         //const Real    yneg = hpp<0?-1:1;
 329
 330         //the bounds of the rectangle
 331         Point p[2] = {point1,point2};
 332
 333         if((p[0][0] > p[1][0]) ^ wpp < 0)
 334         {
 335                 swap(p[0][0],p[1][0]);
 336         }
 337
 338         if((p[0][1] > p[1][1]) ^ hpp < 0)
 339         {
 340                 swap(p[0][1],p[1][1]);
 341         }
 342
 343         /*p[0][0] -= xneg*feather_x;
 344         p[1][0] += xneg*feather_x;
 345         p[0][1] -= yneg*feather_y;
 346         p[1][1] += yneg*feather_y;*/
 347
 348         //the integer coordinates
 349         int y_start = (int)((p[0][1] - tl[1])/hpp +.5);         //round start up
 350         int x_start = (int)((p[0][0] - tl[0])/wpp +.5);
 351         int y_end = (int)((p[1][1] - tl[1])/hpp +.5);   //and ends up
 352         int x_end =     (int)((p[1][0] - tl[0])/wpp +.5);
 353
 354         y_start = max(0,y_start);
 355         x_start = max(0,x_start);
 356         y_end = min(h,y_end);
 357         x_end = min(w,x_end);
 358
 359         SuperCallback supercb(cb,0,9000,10000);
 360
 361         if(y_start >= h || x_start > w  || x_end < 0 || y_end < 0)
 362         {
 363                 if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 364                 {
 365                         if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 366                         return false;
 367                 }
 368
 369                 return true;
 370         }
 371
 372         Real xf_start = tl[0] + x_start*wpp;
 373         Point pos(xf_start,tl[1] + y_start*hpp);
 374
 375         Color   clr = Color::black();
 376         Real    amt;
 377
 378         if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 379         {
 380                 if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 381                 return false;
 382         }
 383
 384         for(int y = y_start; y < y_end; y++, pos[1] += hpp)
 385         {
 386                 pos[0] = xf_start;
 387                 for(int x = x_start; x < x_end; x++, pos[0] += wpp)
 388                 {
 389                         if(get_color(pos,clr,amt))
 390                         {
 391                                 if(amt==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 392                                         (*surface)[y][x] = clr;
 393                                 else
 394                                         (*surface)[y][x] = Color::blend(clr,(*surface)[y][x],amt,get_blend_method());
 395                         }
 396                 }
 397         }
 398
 399         return true;
 400
 401 #if     0
 402         //faster version but much more complex
 403         //the floating point
 404         Real y1,y2,y3;
 405         Real x1,x2,x3;
 406         Real dx1,dx2; //reversed in 3rd y section, not used in 2nd
 407
 408         //the transparent
 409         Real fx = 0, fy = 0;
 410         Real dfx,dfy;
 411
 412         //Get the slopes of the lines we need to worry about
 413         if(feather_x)
 414         {
 415                 dfx = 1/(fxsize);
 416
 417                 if(fxsize*2 > xfw)
 418                 {
 419                         x1 = xfw/2;
 420                         x2 = 0;
 421                         x3 = xfw;
 422                 }else
 423                 {
 424                         x1 = fxsize;
 425                         x2 = xfw - fxsize;
 426                         x3 = xfw;
 427                 }
 428         }else
 429         {
 430                 fx = 1;
 431                 dfx = 0;
 432                 x1=0;
 433                 x2=xfw;
 434                 x3=0;
 435         }
 436
 437         if(feather_y)
 438         {
 439                 dfy = 1/(fysize);
 440
 441                 if(fysize*2 > yfh)
 442                 {
 443                         y1 = yfh/2;
 444                         y2 = 0;
 445                         y3 = yfh;
 446                 }else
 447                 {
 448                         y1 = fysize;
 449                         y2 = yfh - fysize;
 450                         y3 = yfh;
 451                 }
 452
 453                 dx1 = ph*feather_x/feather_y;
 454                 dx2 = -2*dx1;
 455
 456         }else
 457         {
 458                 fy = 1;
 459                 dfy = 0;
 460                 y1=0;
 461                 y2=yfh;
 462                 y3=0;
 463         }
 464
 465         fy = yf*dfy;
 466
 467         int x,y;
 468         Real value = 0;
 469         SuperCallback supercb(cb,0,9000,10000);
 470         Surface::pen    p;
 471
 472         Real tx1 = 0,tx2 =
 473         for(y = y_start;yf < y1; y++,yf++,fy+=dfy, tx1+=dx1)
 474         {
 475                 fx = xf*dfx;
 476
 477                 p = surface->get_pen(x_start,y);
 478                 for(; xf < x1; xf++,p.inc_x(), fx+=dfx)
 479                 {
 480                         //we are in the x portion... use fx
 481                         value = fx*get_amount();
 482                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 483                                 p.put_value(color);
 484                         else
 485                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 486                 }
 487
 488                 for(;xf < x2; xf++,p.inc_x())
 489                 {
 490                         //we are now in y... use fy
 491                         value = fy*get_amount();
 492                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 493                                 p.put_value(color);
 494                         else
 495                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 496                 }
 497
 498                 fx = xfw?(xfw - xf)/xfw:1;
 499                 for(;xf < x3 && ; xf++,p.inc_x(), fx-=dfx)
 500                 {
 501                         //we are in the x portion... use fx
 502                         value = max(0,fx*get_amount());
 503                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 504                                 p.put_value(color);
 505                         else
 506                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 507                 }
 508         }
 509
 510         x1 =
 511         for(;fy < 1.0; y++,yf++,fy+=dfy)
 512         {
 513                 fx = xf*dfx;
 514
 515                 p = surface->get_pen(x_start,y);
 516                 for(; xf < x1; xf++,p.inc_x(), fx+=dfx)
 517                 {
 518                         //we are in the x portion... use fx
 519                         value = fx*get_amount();
 520                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 521                                 p.put_value(color);
 522                         else
 523                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 524                 }
 525
 526                 for(;xf < x2; xf++,p.inc_x())
 527                 {
 528                         //we are now in y... use fy
 529                         value = fy*get_amount();
 530                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 531                                 p.put_value(color);
 532                         else
 533                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 534                 }
 535
 536                 fx = xfw?(xfw - xf)/xfw:1;
 537                 for(;xf < x3 && ; xf++,p.inc_x(), fx-=dfx)
 538                 {
 539                         //we are in the x portion... use fx
 540                         value = max(0,fx*get_amount());
 541                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 542                                 p.put_value(color);
 543                         else
 544                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 545                 }
 546         }
 547
 548         for()
 549         {
 550                 for(int x = x_start; x < x_end; x++)
 551                 {
 552
 553                 }
 554         }
 555
 556 #endif
 557
 558         // Mark our progress as finished
 559         if(cb && !cb->amount_complete(10000,10000))
 560                 return false;
 561
 562         return true;
 563 }