synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/lyr_std/shade.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file shade.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id: shade.cpp,v 1.2 2005/01/24 03:08:17 darco Exp $
   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 "shade.h"
  33
  34 #include <synfig/string.h>
  35 #include <synfig/time.h>
  36 #include <synfig/context.h>
  37 #include <synfig/paramdesc.h>
  38 #include <synfig/renddesc.h>
  39 #include <synfig/surface.h>
  40 #include <synfig/value.h>
  41 #include <synfig/valuenode.h>
  42 #include <synfig/segment.h>
  43
  44 #include <cstring>
  45 #include <ETL/pen>
  46 #include <ETL/misc>
  47
  48 #endif
  49
  50 using namespace synfig;
  51 using namespace etl;
  52 using namespace std;
  53
  54 /*#define TYPE_BOX                      0
  55 #define TYPE_FASTGUASSIAN       1
  56 #define TYPE_FASTGAUSSIAN       1
  57 #define TYPE_CROSS                      2
  58 #define TYPE_GUASSIAN           3
  59 #define TYPE_GAUSSIAN           3
  60 #define TYPE_DISC                       4
  61 */
  62
  63 /* -- G L O B A L S --------------------------------------------------------- */
  64
  65 SYNFIG_LAYER_INIT(Layer_Shade);
  66 SYNFIG_LAYER_SET_NAME(Layer_Shade,"shade");
  67 SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Shade,_("Shade"));
  68 SYNFIG_LAYER_SET_CATEGORY(Layer_Shade,_("Stylize"));
  69 SYNFIG_LAYER_SET_VERSION(Layer_Shade,"0.2");
  70 SYNFIG_LAYER_SET_CVS_ID(Layer_Shade,"$Id: shade.cpp,v 1.2 2005/01/24 03:08:17 darco Exp $");
  71
  72 /* -- F U N C T I O N S ----------------------------------------------------- */
  73
  74 inline void clamp(synfig::Vector &v)
  75 {
  76         if(v[0]<0.0)v[0]=0.0;
  77         if(v[1]<0.0)v[1]=0.0;
  78 }
  79
  80 Layer_Shade::Layer_Shade():
  81         Layer_Composite (0.75,Color::BLEND_BEHIND),
  82         size(0.1,0.1),
  83         type(Blur::FASTGAUSSIAN),
  84         color(Color::black()),
  85         offset(0.2,-0.2),
  86         invert(false)
  87 {
  88 }
  89
  90 bool
  91 Layer_Shade::set_param(const String &param, const ValueBase &value)
  92 {
  93         IMPORT_PLUS(size,clamp(size));
  94         IMPORT(type);
  95         IMPORT(color);
  96         IMPORT(offset);
  97         IMPORT(invert);
  98
  99         return Layer_Composite::set_param(param,value);
 100 }
 101
 102 ValueBase
 103 Layer_Shade::get_param(const String &param)const
 104 {
 105         EXPORT(size);
 106         EXPORT(type);
 107         EXPORT(color);
 108         EXPORT(offset);
 109         EXPORT(invert);
 110
 111         EXPORT_NAME();
 112         EXPORT_VERSION();
 113
 114         return Layer_Composite::get_param(param);
 115 }
 116
 117 Color
 118 Layer_Shade::get_color(Context context, const Point &pos)const
 119 {
 120         Point blurpos = Blur(size,type)(pos);
 121
 122         if(get_amount()==0.0)
 123                 return context.get_color(pos);
 124
 125         Color shade(color);
 126
 127         if(!invert)
 128                 shade.set_a(context.get_color(blurpos-offset).get_a());
 129         else
 130                 shade.set_a(1.0f-context.get_color(blurpos-offset).get_a());
 131
 132         return Color::blend(shade,context.get_color(pos),get_amount(),get_blend_method());
 133 }
 134
 135 bool
 136 Layer_Shade::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 137 {
 138         int x,y;
 139
 140         const int       w = renddesc.get_w(),
 141                                 h = renddesc.get_h();
 142         const Real      pw = renddesc.get_pw(),
 143                                 ph = renddesc.get_ph();
 144
 145         RendDesc        workdesc(renddesc);
 146         Surface         worksurface;
 147         etl::surface<float> blurred;
 148
 149         //expand the working surface to accommodate the blur
 150
 151         //the expanded size = 1/2 the size in each direction rounded up
 152         int     halfsizex = (int) (abs(size[0]*.5/pw) + 3),
 153                 halfsizey = (int) (abs(size[1]*.5/ph) + 3);
 154
 155         int offset_u(-round_to_int(offset[0]/pw)),offset_v(-round_to_int(offset[1]/ph));
 156
 157         int offset_w(w+abs(offset_u)),offset_h(h+abs(offset_v));
 158
 159         workdesc.set_subwindow(
 160                 offset_u<0?offset_u:0,
 161                 offset_v<0?offset_v:0,
 162                 (offset_u>0?offset_u:0)+w,
 163                 (offset_v>0?offset_v:0)+h
 164         );
 165
 166         /*
 167         if(quality >=10)
 168         {
 169                 halfsizex=1;
 170                 halfsizey=1;
 171         }else
 172         */
 173         if(quality == 9)
 174         {
 175                 halfsizex/=4;
 176                 halfsizey/=4;
 177         }
 178
 179         //expand by 1/2 size in each direction on either side
 180         switch(type)
 181         {
 182                 case Blur::DISC:
 183                 case Blur::BOX:
 184                 case Blur::CROSS:
 185                 {
 186                         workdesc.set_subwindow(-max(1,halfsizex),-max(1,halfsizey),offset_w+2*max(1,halfsizex),offset_h+2*max(1,halfsizey));
 187                         break;
 188                 }
 189                 case Blur::FASTGAUSSIAN:
 190                 {
 191                         if(quality < 4)
 192                         {
 193                                 halfsizex*=2;
 194                                 halfsizey*=2;
 195                         }
 196                         workdesc.set_subwindow(-max(1,halfsizex),-max(1,halfsizey),offset_w+2*max(1,halfsizex),offset_h+2*max(1,halfsizey));
 197                         break;
 198                 }
 199                 case Blur::GAUSSIAN:
 200                 {
 201                 #define GAUSSIAN_ADJUSTMENT             (0.05)
 202                         Real    pw = (Real)workdesc.get_w()/(workdesc.get_br()[0]-workdesc.get_tl()[0]);
 203                         Real    ph = (Real)workdesc.get_h()/(workdesc.get_br()[1]-workdesc.get_tl()[1]);
 204
 205                         pw=pw*pw;
 206                         ph=ph*ph;
 207
 208                         halfsizex = (int)(abs(pw)*size[0]*GAUSSIAN_ADJUSTMENT+0.5);
 209                         halfsizey = (int)(abs(ph)*size[1]*GAUSSIAN_ADJUSTMENT+0.5);
 210
 211                         halfsizex = (halfsizex + 1)/2;
 212                         halfsizey = (halfsizey + 1)/2;
 213                         workdesc.set_subwindow( -halfsizex, -halfsizey, offset_w+2*halfsizex, offset_h+2*halfsizey );
 214
 215                         break;
 216                 }
 217         }
 218 #define SCALE_FACTOR    (64.0)
 219         if(/*quality>9 || */size[0]<=pw*SCALE_FACTOR)
 220         {
 221                 SuperCallback stageone(cb,0,5000,10000);
 222                 SuperCallback stagetwo(cb,5000,10000,10000);
 223
 224                 //callbacks depend on how long the blur takes
 225                 if(size[0] || size[1])
 226                 {
 227                         if(type == Blur::DISC)
 228                         {
 229                                 stageone = SuperCallback(cb,0,5000,10000);
 230                                 stagetwo = SuperCallback(cb,5000,10000,10000);
 231                         }
 232                         else
 233                         {
 234                                 stageone = SuperCallback(cb,0,9000,10000);
 235                                 stagetwo = SuperCallback(cb,9000,10000,10000);
 236                         }
 237                 }
 238                 else
 239                 {
 240                         stageone = SuperCallback(cb,0,9999,10000);
 241                         stagetwo = SuperCallback(cb,9999,10000,10000);
 242                 }
 243
 244
 245
 246                 //render the background onto the expanded surface
 247                 if(!context.accelerated_render(&worksurface,quality,workdesc,&stageone))
 248                         return false;
 249
 250                 // Copy over the alpha
 251                 blurred.set_wh(worksurface.get_w(),worksurface.get_h());
 252                 for(int j=0;j<worksurface.get_h();j++)
 253                         for(int i=0;i<worksurface.get_w();i++)
 254                         {
 255                                 blurred[j][i]=worksurface[j][i].get_a();
 256                         }
 257
 258                 //blur the image
 259                 Blur(size,type,&stagetwo)(blurred,workdesc.get_br()-workdesc.get_tl(),blurred);
 260
 261                 //be sure the surface is of the correct size
 262                 surface->set_wh(renddesc.get_w(),renddesc.get_h());
 263
 264                 int u = halfsizex-(offset_u<0?offset_u:0), v = halfsizey-(offset_v<0?offset_v:0);
 265                 for(y=0;y<renddesc.get_h();y++,v++)
 266                 {
 267                         u = halfsizex-(offset_u<0?offset_u:0);
 268                         for(x=0;x<renddesc.get_w();x++,u++)
 269                         {
 270                                 Color a(color);
 271
 272                                 if(!invert)
 273                                         a.set_a(blurred.linear_sample(offset_u+(float)u,offset_v+(float)v));
 274                                 else
 275                                         a.set_a(1.0f-blurred.linear_sample(offset_u+(float)u,offset_v+(float)v));
 276
 277                                 if(a.get_a() || get_blend_method()==Color::BLEND_STRAIGHT)
 278                                 {
 279                                         (*surface)[y][x]=Color::blend(a,worksurface[v][u],get_amount(),get_blend_method());
 280                                 }
 281                                 else (*surface)[y][x] = worksurface[v][u];
 282                         }
 283                 }
 284         }
 285         else
 286         {
 287
 288                 SuperCallback stageone(cb,0,5000,10000);
 289                 SuperCallback stagetwo(cb,5000,10000,10000);
 290
 291                 //callbacks depend on how long the blur takes
 292                 if(size[0] || size[1])
 293                 {
 294                         if(type == Blur::DISC)
 295                         {
 296                                 stageone = SuperCallback(cb,0,5000,10000);
 297                                 stagetwo = SuperCallback(cb,5000,10000,10000);
 298                         }
 299                         else
 300                         {
 301                                 stageone = SuperCallback(cb,0,9000,10000);
 302                                 stagetwo = SuperCallback(cb,9000,10000,10000);
 303                         }
 304                 }
 305                 else
 306                 {
 307                         stageone = SuperCallback(cb,0,9999,10000);
 308                         stagetwo = SuperCallback(cb,9999,10000,10000);
 309                 }
 310
 311                 int fw(floor_to_int(abs(size[0]/(pw*SCALE_FACTOR)))+1);
 312                 int fh(floor_to_int(abs(size[1]/(ph*SCALE_FACTOR)))+1);
 313                 int tmpw(round_to_int((float)workdesc.get_w()/fw)),tmph(round_to_int((float)workdesc.get_h()/fh));
 314
 315                 workdesc.clear_flags();
 316                 workdesc.set_wh(tmpw,tmph);
 317                 //synfig::info("fw: %d, fh: %d",fw,fh);
 318
 319                 //render the blur fodder
 320                 if(!context.accelerated_render(&worksurface,quality,workdesc,&stageone))
 321                         return false;
 322
 323                 //render the background
 324                 if(!context.accelerated_render(surface,quality,renddesc,&stageone))
 325                         return false;
 326
 327                 // Copy over the alpha
 328                 blurred.set_wh(worksurface.get_w(),worksurface.get_h());
 329                 for(int j=0;j<worksurface.get_h();j++)
 330                         for(int i=0;i<worksurface.get_w();i++)
 331                                 blurred[j][i]=worksurface[j][i].get_a();
 332
 333                 //blur the image
 334                 Blur(size,type,&stagetwo)(blurred,workdesc.get_br()-workdesc.get_tl(),blurred);
 335
 336
 337                 int u = halfsizex-(offset_u<0?offset_u:0), v = halfsizey-(offset_v<0?offset_v:0);
 338                 for(y=0;y<renddesc.get_h();y++,v++)
 339                 {
 340                         u = halfsizex-(offset_u<0?offset_u:0);
 341                         for(x=0;x<renddesc.get_w();x++,u++)
 342                         {
 343                                 Color a(color);
 344
 345                                 if(!invert)
 346                                         a.set_a(blurred.linear_sample(((float)offset_u+(float)u)/(float)fw,((float)offset_v+(float)v)/(float)fh));
 347                                 else
 348                                         a.set_a(1.0f-blurred.linear_sample(((float)offset_u+(float)u)/fw,((float)offset_v+(float)v)/(float)fh));
 349
 350                                 if(a.get_a() || get_blend_method()==Color::BLEND_STRAIGHT)
 351                                 {
 352                                         (*surface)[y][x]=Color::blend(a,(*surface)[y][x],get_amount(),get_blend_method());
 353                                 }
 354                         }
 355                 }
 356         }
 357
 358
 359         if(cb && !cb->amount_complete(10000,10000))
 360         {
 361                 //if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
 362                 return false;
 363         }
 364
 365         return true;
 366 }
 367
 368 Layer::Vocab
 369 Layer_Shade::get_param_vocab(void)const
 370 {
 371         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 372
 373         ret.push_back(ParamDesc("color")
 374                 .set_local_name(_("Color"))
 375         );
 376         ret.push_back(ParamDesc("offset")
 377                 .set_local_name(_("Offset"))
 378         );
 379         ret.push_back(ParamDesc("size")
 380                 .set_local_name(_("Size"))
 381                 .set_description(_("Size of Shade"))
 382                 .set_is_distance()
 383                 .set_origin("offset")
 384         );
 385         ret.push_back(ParamDesc("type")
 386                 .set_local_name(_("Type"))
 387                 .set_description(_("Type of blur to use"))
 388                 .set_hint("enum")
 389                 .add_enum_value(Blur::BOX,"box",_("Box Blur"))
 390                 .add_enum_value(Blur::FASTGAUSSIAN,"fastgaussian",_("Fast Gaussian Blur"))
 391                 .add_enum_value(Blur::CROSS,"cross",_("Cross-Hatch Blur"))
 392                 .add_enum_value(Blur::GAUSSIAN,"gaussian",_("Gaussian Blur"))
 393                 .add_enum_value(Blur::DISC,"disc",_("Disc Blur"))
 394         );
 395
 396         ret.push_back(ParamDesc("invert")
 397                 .set_local_name(_("Invert"))
 398         );
 399
 400         return ret;
 401 }
 402
 403 Rect
 404 Layer_Shade::get_full_bounding_rect(Context context)const
 405 {
 406         if(is_disabled())
 407                 return context.get_full_bounding_rect();
 408
 409         if(invert)
 410                 return Rect::full_plane();
 411
 412         Rect under(context.get_full_bounding_rect());
 413
 414         if(Color::is_onto(get_blend_method()))
 415                 return under;
 416
 417         Rect bounds((under+offset).expand_x(size[0]).expand_y(size[1]));
 418
 419         if(is_solid_color())
 420                 return bounds;
 421
 422         return bounds|under;
 423 }