synfig-core/tags/stable/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 **      Copyright (c) 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include <synfig/string.h>
  34 #include <synfig/time.h>
  35 #include <synfig/context.h>
  36 #include <synfig/paramdesc.h>
  37 #include <synfig/renddesc.h>
  38 #include <synfig/surface.h>
  39 #include <synfig/value.h>
  40 #include <synfig/valuenode.h>
  41 #include <ETL/pen>
  42
  43 #include "filledrect.h"
  44
  45 #endif
  46
  47 /* === U S I N G =========================================================== */
  48
  49 using namespace etl;
  50 using namespace std;
  51 using namespace synfig;
  52
  53 /* === G L O B A L S ======================================================= */
  54
  55 SYNFIG_LAYER_INIT(FilledRect);
  56 SYNFIG_LAYER_SET_NAME(FilledRect,"rectangle");
  57 SYNFIG_LAYER_SET_LOCAL_NAME(FilledRect,N_("Rectangle"));
  58 SYNFIG_LAYER_SET_CATEGORY(FilledRect,N_("Geometry"));
  59 SYNFIG_LAYER_SET_VERSION(FilledRect,"0.1");
  60 SYNFIG_LAYER_SET_CVS_ID(FilledRect,"$Id$");
  61
  62 /* === P R O C E D U R E S ================================================= */
  63
  64 /* === M E T H O D S ======================================================= */
  65
  66 /* === E N T R Y P O I N T ================================================= */
  67
  68 FilledRect::FilledRect():
  69         Layer_Composite(1.0,Color::BLEND_STRAIGHT),
  70         color(Color::black()),
  71         point1(0,0),
  72         point2(1,1),
  73         feather_x(0),
  74         feather_y(0),
  75         bevel(0),
  76         bevCircle(0)
  77 {
  78 }
  79
  80 bool
  81 FilledRect::set_param(const String & param, const ValueBase &value)
  82 {
  83         IMPORT(color);
  84         IMPORT(point1);
  85         IMPORT(point2);
  86         IMPORT_PLUS(feather_x, if(feather_x<0)feather_x=0;);
  87         IMPORT_PLUS(feather_y, if(feather_y<0)feather_y=0;);
  88         IMPORT(bevel);
  89         IMPORT(bevCircle);
  90
  91         return Layer_Composite::set_param(param,value);
  92 }
  93
  94 ValueBase
  95 FilledRect::get_param(const String &param)const
  96 {
  97         EXPORT(color);
  98         EXPORT(point1);
  99         EXPORT(point2);
 100         EXPORT(feather_x);
 101         EXPORT(feather_y);
 102         EXPORT(bevel);
 103         EXPORT(bevCircle);
 104
 105         EXPORT_NAME();
 106         EXPORT_VERSION();
 107
 108         return Layer_Composite::get_param(param);
 109 }
 110
 111 Layer::Vocab
 112 FilledRect::get_param_vocab()const
 113 {
 114         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 115
 116         ret.push_back(ParamDesc("color")
 117                 .set_local_name(_("Color"))
 118         );
 119
 120         ret.push_back(ParamDesc("point1")
 121                 .set_local_name(_("Point 1"))
 122         );
 123
 124         ret.push_back(ParamDesc("point2")
 125                 .set_local_name(_("Point 2"))
 126         );
 127
 128         ret.push_back(ParamDesc("feather_x")
 129                 .set_local_name(_("Feather X"))
 130         );
 131
 132         ret.push_back(ParamDesc("feather_y")
 133                 .set_local_name(_("Feather Y"))
 134         );
 135
 136         ret.push_back(ParamDesc("bevel")
 137                 .set_local_name(_("Bevel"))
 138         );
 139
 140         ret.push_back(ParamDesc("bevCircle")
 141                 .set_local_name(_("Keep Bevel Circular"))
 142         );
 143
 144         return ret;
 145 }
 146
 147 bool
 148 FilledRect::get_color(const Point &pos, Color &out, Real &outamount) const
 149 {
 150         Point p[2] = {point1,point2};
 151         Real swap;
 152
 153         if(p[0][0] > p[1][0])
 154         {
 155                 swap = p[0][0];
 156                 p[0][0] = p[1][0];
 157                 p[1][0] = swap;
 158         }
 159
 160         if(p[0][1] > p[1][1])
 161         {
 162                 swap = p[0][1];
 163                 p[0][1] = p[1][1];
 164                 p[1][1] = swap;
 165         }
 166
 167         /*
 168         p[0][0] -= feather_x;
 169         p[1][0] += feather_x;
 170         p[0][1] -= feather_y;
 171         p[1][1] += feather_y;*/
 172         const Real      w = p[1][0] - p[0][0];
 173         const Real      h = p[1][1] - p[0][1];
 174
 175         if(pos[0] >= p[0][0] && pos[0] <= p[1][0] && pos[1] >= p[0][1] && pos[1] <= p[1][1])
 176         {
 177                 Real value = 1;
 178
 179                 if(feather_x > 0)
 180                 {
 181                         Real xdist = pos[0] - p[0][0];
 182                         xdist = min(xdist,p[1][0]-pos[0]);
 183
 184                         if(xdist < feather_x)
 185                         {
 186                                 value = xdist/feather_x;
 187                         }
 188                 }
 189
 190                 if(feather_y > 0)
 191                 {
 192                         Real ydist = pos[1]-p[0][1];
 193                         ydist = min(ydist,p[1][1]-pos[1]);
 194
 195                         if(ydist < feather_y)
 196                         {
 197                                 value = min(value,(ydist/feather_y));
 198                         }
 199                 }
 200
 201                 //if we're beveled then check with ellipse code...
 202                 if(bevel > 0)
 203                 {
 204                         const Real bev = (bevel > 1) ? 1 : bevel;
 205                         const Real bevx = bevCircle ? min(w*bev/2,h*bev/2) : w*bev/2;
 206                         const Real bevy = bevCircle ? min(w*bev/2,h*bev/2) : h*bev/2;;
 207
 208                         Vector v(0,0);
 209                         bool    in = false;
 210
 211                         //based on which quarter it is in (and because it's x/y symmetric) get a positive vector (x/y)
 212                         if(pos[0] < p[0][0] + bevx)
 213                         {
 214                                  if(pos[1] < p[0][1] + bevy)
 215                                  {
 216                                          v[0] = p[0][0] + bevx - pos[0];
 217                                          v[1] = p[0][1] + bevy - pos[1];
 218                                          in = true;
 219                                  }else if(pos[1] > p[1][1] - bevy)
 220                                  {
 221                                          v[0] = p[0][0] + bevx - pos[0];
 222                                          v[1] = pos[1] - (p[1][1] - bevy);
 223                                          in = true;
 224                                  }
 225                         }
 226                         else if(pos[0] > p[1][0] - bevx)
 227                         {
 228                                 if(pos[1] < p[0][1] + bevy)
 229                                  {
 230                                          v[0] = pos[0] - (p[1][0] - bevx);
 231                                          v[1] = p[0][1] + bevy - pos[1];
 232                                          in = true;
 233                                  }else if(pos[1] > p[1][1] - bevy)
 234                                  {
 235                                          v[0] = pos[0] - (p[1][0] - bevx);
 236                                          v[1] = pos[1] - (p[1][1] - bevy);
 237                                          in = true;
 238                                  }
 239                         }
 240
 241                         //if it's inside a bevelled block
 242                         if(in)
 243                         {
 244                                 const Vector scale(bevx,bevy);
 245
 246                                 Vector vc(v[0]/scale[0],v[1]/scale[1]);
 247                                 Real    d = vc.mag();
 248
 249                                 //if it's inside the ellipse
 250                                 if(d < 1)
 251                                 {
 252                                         Real val = atan2(vc[1],vc[0]);
 253                                         val /= (PI/2); //< will always be (0,pi/2) because both components are positive
 254
 255                                         Real fthx=1,fthy=1;
 256
 257                                         //change d into distance away from edge
 258                                         d = 1 - d;
 259
 260                                         if(feather_x > 0)
 261                                         {
 262                                                 if(scale[0] < feather_x)
 263                                                 {
 264                                                         fthy = scale[0]/feather_x;
 265                                                 }
 266
 267                                                 if(d*scale[0] < feather_x)
 268                                                 {
 269                                                         fthx = d*scale[0]/feather_x;
 270                                                 }
 271                                         }
 272
 273                                         if(feather_y > 0)
 274                                         {
 275                                                 if(scale[1] < feather_y)
 276                                                 {
 277                                                         fthx = min(fthx,scale[1]/feather_y);
 278                                                 }
 279
 280                                                 if(d*scale[1] < feather_y)
 281                                                 {
 282                                                         fthy = min(fthy,d*scale[1]/feather_y);
 283                                                 }
 284                                         }
 285
 286                                         //interpolate
 287                                         outamount = min(value,((1-val)*fthx + val*fthy)) * get_amount();
 288                                         out = color;
 289                                         return true;
 290
 291                                 }else return false;
 292                         }
 293                 }
 294
 295                 outamount = value * get_amount();
 296                 out = color;
 297
 298                 return true;
 299         }else
 300                 return false;
 301 }
 302
 303 Color
 304 FilledRect::get_color(Context context, const Point &pos)const
 305 {
 306         Color   clr;
 307         Real    amt;
 308
 309         if(get_color(pos,clr,amt))
 310         {
 311                 if(amt==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 312                         return clr;
 313                 else
 314                         return Color::blend(clr,context.get_color(pos),amt,get_blend_method());
 315         }
 316         else
 317                 return context.get_color(pos);
 318 }
 319
 320 bool
 321 FilledRect::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 322 {
 323         // Width and Height of a pixel
 324         const Point br(renddesc.get_br()), tl(renddesc.get_tl());
 325         const int w = renddesc.get_w(), h = renddesc.get_h();
 326
 327         Real    wpp = (br[0]-tl[0])/w;
 328         Real    hpp = (br[1]-tl[1])/h;
 329         //const Real    xneg = wpp<0?-1:1;
 330         //const Real    yneg = hpp<0?-1:1;
 331
 332         //the bounds of the rectangle
 333         Point p[2] = {point1,point2};
 334
 335         if((p[0][0] > p[1][0]) ^ wpp < 0)
 336         {
 337                 swap(p[0][0],p[1][0]);
 338         }
 339
 340         if((p[0][1] > p[1][1]) ^ hpp < 0)
 341         {
 342                 swap(p[0][1],p[1][1]);
 343         }
 344
 345         /*p[0][0] -= xneg*feather_x;
 346         p[1][0] += xneg*feather_x;
 347         p[0][1] -= yneg*feather_y;
 348         p[1][1] += yneg*feather_y;*/
 349
 350         //the integer coordinates
 351         int y_start = (int)((p[0][1] - tl[1])/hpp +.5);         //round start up
 352         int x_start = (int)((p[0][0] - tl[0])/wpp +.5);
 353         int y_end = (int)((p[1][1] - tl[1])/hpp +.5);   //and ends up
 354         int x_end =     (int)((p[1][0] - tl[0])/wpp +.5);
 355
 356         y_start = max(0,y_start);
 357         x_start = max(0,x_start);
 358         y_end = min(h,y_end);
 359         x_end = min(w,x_end);
 360
 361         SuperCallback supercb(cb,0,9000,10000);
 362
 363         if(y_start >= h || x_start > w  || x_end < 0 || y_end < 0)
 364         {
 365                 if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 366                 {
 367                         if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 368                         return false;
 369                 }
 370
 371                 return true;
 372         }
 373
 374         Real xf_start = tl[0] + x_start*wpp;
 375         Point pos(xf_start,tl[1] + y_start*hpp);
 376
 377         Color   clr = Color::black();
 378         Real    amt;
 379
 380         if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 381         {
 382                 if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 383                 return false;
 384         }
 385
 386         for(int y = y_start; y < y_end; y++, pos[1] += hpp)
 387         {
 388                 pos[0] = xf_start;
 389                 for(int x = x_start; x < x_end; x++, pos[0] += wpp)
 390                 {
 391                         if(get_color(pos,clr,amt))
 392                         {
 393                                 if(amt==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 394                                         (*surface)[y][x] = clr;
 395                                 else
 396                                         (*surface)[y][x] = Color::blend(clr,(*surface)[y][x],amt,get_blend_method());
 397                         }
 398                 }
 399         }
 400
 401         return true;
 402
 403 #if     0
 404         //faster version but much more complex
 405         //the floating point
 406         Real y1,y2,y3;
 407         Real x1,x2,x3;
 408         Real dx1,dx2; //reversed in 3rd y section, not used in 2nd
 409
 410         //the transparent
 411         Real fx = 0, fy = 0;
 412         Real dfx,dfy;
 413
 414         //Get the slopes of the lines we need to worry about
 415         if(feather_x)
 416         {
 417                 dfx = 1/(fxsize);
 418
 419                 if(fxsize*2 > xfw)
 420                 {
 421                         x1 = xfw/2;
 422                         x2 = 0;
 423                         x3 = xfw;
 424                 }else
 425                 {
 426                         x1 = fxsize;
 427                         x2 = xfw - fxsize;
 428                         x3 = xfw;
 429                 }
 430         }else
 431         {
 432                 fx = 1;
 433                 dfx = 0;
 434                 x1=0;
 435                 x2=xfw;
 436                 x3=0;
 437         }
 438
 439         if(feather_y)
 440         {
 441                 dfy = 1/(fysize);
 442
 443                 if(fysize*2 > yfh)
 444                 {
 445                         y1 = yfh/2;
 446                         y2 = 0;
 447                         y3 = yfh;
 448                 }else
 449                 {
 450                         y1 = fysize;
 451                         y2 = yfh - fysize;
 452                         y3 = yfh;
 453                 }
 454
 455                 dx1 = ph*feather_x/feather_y;
 456                 dx2 = -2*dx1;
 457
 458         }else
 459         {
 460                 fy = 1;
 461                 dfy = 0;
 462                 y1=0;
 463                 y2=yfh;
 464                 y3=0;
 465         }
 466
 467         fy = yf*dfy;
 468
 469         int x,y;
 470         Real value = 0;
 471         SuperCallback supercb(cb,0,9000,10000);
 472         Surface::pen    p;
 473
 474         Real tx1 = 0,tx2 =
 475         for(y = y_start;yf < y1; y++,yf++,fy+=dfy, tx1+=dx1)
 476         {
 477                 fx = xf*dfx;
 478
 479                 p = surface->get_pen(x_start,y);
 480                 for(; xf < x1; xf++,p.inc_x(), fx+=dfx)
 481                 {
 482                         //we are in the x portion... use fx
 483                         value = fx*get_amount();
 484                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 485                                 p.put_value(color);
 486                         else
 487                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 488                 }
 489
 490                 for(;xf < x2; xf++,p.inc_x())
 491                 {
 492                         //we are now in y... use fy
 493                         value = fy*get_amount();
 494                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 495                                 p.put_value(color);
 496                         else
 497                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 498                 }
 499
 500                 fx = xfw?(xfw - xf)/xfw:1;
 501                 for(;xf < x3 && ; xf++,p.inc_x(), fx-=dfx)
 502                 {
 503                         //we are in the x portion... use fx
 504                         value = max(0,fx*get_amount());
 505                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 506                                 p.put_value(color);
 507                         else
 508                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 509                 }
 510         }
 511
 512         x1 =
 513         for(;fy < 1.0; y++,yf++,fy+=dfy)
 514         {
 515                 fx = xf*dfx;
 516
 517                 p = surface->get_pen(x_start,y);
 518                 for(; xf < x1; xf++,p.inc_x(), fx+=dfx)
 519                 {
 520                         //we are in the x portion... use fx
 521                         value = fx*get_amount();
 522                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 523                                 p.put_value(color);
 524                         else
 525                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 526                 }
 527
 528                 for(;xf < x2; xf++,p.inc_x())
 529                 {
 530                         //we are now in y... use fy
 531                         value = fy*get_amount();
 532                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 533                                 p.put_value(color);
 534                         else
 535                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 536                 }
 537
 538                 fx = xfw?(xfw - xf)/xfw:1;
 539                 for(;xf < x3 && ; xf++,p.inc_x(), fx-=dfx)
 540                 {
 541                         //we are in the x portion... use fx
 542                         value = max(0,fx*get_amount());
 543                         if(value==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 544                                 p.put_value(color);
 545                         else
 546                                 p.put_value(Color::blend(color,p.get_value(),value,get_blend_method()));
 547                 }
 548         }
 549
 550         for()
 551         {
 552                 for(int x = x_start; x < x_end; x++)
 553                 {
 554
 555                 }
 556         }
 557
 558 #endif
 559
 560         // Mark our progress as finished
 561         if(cb && !cb->amount_complete(10000,10000))
 562                 return false;
 563
 564         return true;
 565 }