1 /* === S Y N F I G ========================================================= */
3 ** \brief Implementation of the "Shade" layer
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2008 Chris Moore
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.
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.
22 /* ========================================================================= */
24 /* === H E A D E R S ======================================================= */
35 #include <synfig/string.h>
36 #include <synfig/time.h>
37 #include <synfig/context.h>
38 #include <synfig/paramdesc.h>
39 #include <synfig/renddesc.h>
40 #include <synfig/surface.h>
41 #include <synfig/value.h>
42 #include <synfig/valuenode.h>
43 #include <synfig/segment.h>
51 using namespace synfig;
56 #define TYPE_FASTGUASSIAN 1
58 #define TYPE_GAUSSIAN 3
62 /* -- G L O B A L S --------------------------------------------------------- */
64 SYNFIG_LAYER_INIT(Layer_Shade);
65 SYNFIG_LAYER_SET_NAME(Layer_Shade,"shade");
66 SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Shade,N_("Shade"));
67 SYNFIG_LAYER_SET_CATEGORY(Layer_Shade,N_("Stylize"));
68 SYNFIG_LAYER_SET_VERSION(Layer_Shade,"0.2");
69 SYNFIG_LAYER_SET_CVS_ID(Layer_Shade,"$Id$");
71 /* -- F U N C T I O N S ----------------------------------------------------- */
73 inline void clamp(synfig::Vector &v)
79 Layer_Shade::Layer_Shade():
80 Layer_Composite (0.75,Color::BLEND_BEHIND),
82 type(Blur::FASTGAUSSIAN),
83 color(Color::black()),
87 Layer::Vocab voc(get_param_vocab());
88 Layer::fill_static(voc);
92 Layer_Shade::set_param(const String ¶m, const ValueBase &value)
94 IMPORT_PLUS(size,clamp(size));
96 IMPORT_PLUS(color, { if (color.get_a() == 0) { if (converted_blend_) {
97 set_blend_method(Color::BLEND_ALPHA_OVER);
98 color.set_a(1); } else transparent_color_ = true; } });
102 IMPORT_AS(origin,"offset");
104 return Layer_Composite::set_param(param,value);
108 Layer_Shade::get_param(const String ¶m)const
119 return Layer_Composite::get_param(param);
123 Layer_Shade::get_color(Context context, const Point &pos)const
125 Point blurpos = Blur(size,type)(pos);
127 if(get_amount()==0.0)
128 return context.get_color(pos);
133 shade.set_a(context.get_color(blurpos-origin).get_a());
135 shade.set_a(1.0f-context.get_color(blurpos-origin).get_a());
137 return Color::blend(shade,context.get_color(pos),get_amount(),get_blend_method());
141 Layer_Shade::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
145 const int w = renddesc.get_w(),
146 h = renddesc.get_h();
147 const Real pw = renddesc.get_pw(),
148 ph = renddesc.get_ph();
150 RendDesc workdesc(renddesc);
152 etl::surface<float> blurred;
154 //expand the working surface to accommodate the blur
156 //the expanded size = 1/2 the size in each direction rounded up
157 int halfsizex = (int) (abs(size[0]*.5/pw) + 3),
158 halfsizey = (int) (abs(size[1]*.5/ph) + 3);
160 int origin_u(-round_to_int(origin[0]/pw)),origin_v(-round_to_int(origin[1]/ph));
162 int origin_w(w+abs(origin_u)),origin_h(h+abs(origin_v));
164 workdesc.set_subwindow(
165 origin_u<0?origin_u:0,
166 origin_v<0?origin_v:0,
167 (origin_u>0?origin_u:0)+w,
168 (origin_v>0?origin_v:0)+h
176 else if (quality == 9)
182 //expand by 1/2 size in each direction on either side
189 workdesc.set_subwindow(-max(1,halfsizex),-max(1,halfsizey),origin_w+2*max(1,halfsizex),origin_h+2*max(1,halfsizey));
192 case Blur::FASTGAUSSIAN:
199 workdesc.set_subwindow(-max(1,halfsizex),-max(1,halfsizey),origin_w+2*max(1,halfsizex),origin_h+2*max(1,halfsizey));
204 #define GAUSSIAN_ADJUSTMENT (0.05)
205 Real pw = (Real)workdesc.get_w()/(workdesc.get_br()[0]-workdesc.get_tl()[0]);
206 Real ph = (Real)workdesc.get_h()/(workdesc.get_br()[1]-workdesc.get_tl()[1]);
211 halfsizex = (int)(abs(pw)*size[0]*GAUSSIAN_ADJUSTMENT+0.5);
212 halfsizey = (int)(abs(ph)*size[1]*GAUSSIAN_ADJUSTMENT+0.5);
214 halfsizex = (halfsizex + 1)/2;
215 halfsizey = (halfsizey + 1)/2;
216 workdesc.set_subwindow( -halfsizex, -halfsizey, origin_w+2*halfsizex, origin_h+2*halfsizey );
221 #define SCALE_FACTOR (64.0)
222 if(/*quality>9 || */size[0]<=pw*SCALE_FACTOR)
224 SuperCallback stageone(cb,0,5000,10000);
225 SuperCallback stagetwo(cb,5000,10000,10000);
227 //callbacks depend on how long the blur takes
228 if(size[0] || size[1])
230 if(type == Blur::DISC)
232 stageone = SuperCallback(cb,0,5000,10000);
233 stagetwo = SuperCallback(cb,5000,10000,10000);
237 stageone = SuperCallback(cb,0,9000,10000);
238 stagetwo = SuperCallback(cb,9000,10000,10000);
243 stageone = SuperCallback(cb,0,9999,10000);
244 stagetwo = SuperCallback(cb,9999,10000,10000);
249 //render the background onto the expanded surface
250 if(!context.accelerated_render(&worksurface,quality,workdesc,&stageone))
253 // Copy over the alpha
254 blurred.set_wh(worksurface.get_w(),worksurface.get_h());
255 for(int j=0;j<worksurface.get_h();j++)
256 for(int i=0;i<worksurface.get_w();i++)
258 blurred[j][i]=worksurface[j][i].get_a();
262 Blur(size,type,&stagetwo)(blurred,workdesc.get_br()-workdesc.get_tl(),blurred);
264 //be sure the surface is of the correct size
265 surface->set_wh(renddesc.get_w(),renddesc.get_h());
267 int u = halfsizex-(origin_u<0?origin_u:0), v = halfsizey-(origin_v<0?origin_v:0);
268 for(y=0;y<renddesc.get_h();y++,v++)
270 u = halfsizex-(origin_u<0?origin_u:0);
271 for(x=0;x<renddesc.get_w();x++,u++)
276 a.set_a(blurred.linear_sample(origin_u+(float)u,origin_v+(float)v));
278 a.set_a(1.0f-blurred.linear_sample(origin_u+(float)u,origin_v+(float)v));
280 if(a.get_a() || get_blend_method()==Color::BLEND_STRAIGHT)
282 (*surface)[y][x]=Color::blend(a,worksurface[v][u],get_amount(),get_blend_method());
284 else (*surface)[y][x] = worksurface[v][u];
291 SuperCallback stageone(cb,0,5000,10000);
292 SuperCallback stagetwo(cb,5000,10000,10000);
294 //callbacks depend on how long the blur takes
295 if(size[0] || size[1])
297 if(type == Blur::DISC)
299 stageone = SuperCallback(cb,0,5000,10000);
300 stagetwo = SuperCallback(cb,5000,10000,10000);
304 stageone = SuperCallback(cb,0,9000,10000);
305 stagetwo = SuperCallback(cb,9000,10000,10000);
310 stageone = SuperCallback(cb,0,9999,10000);
311 stagetwo = SuperCallback(cb,9999,10000,10000);
314 int fw(floor_to_int(abs(size[0]/(pw*SCALE_FACTOR)))+1);
315 int fh(floor_to_int(abs(size[1]/(ph*SCALE_FACTOR)))+1);
316 int tmpw(round_to_int((float)workdesc.get_w()/fw)),tmph(round_to_int((float)workdesc.get_h()/fh));
318 workdesc.clear_flags();
319 workdesc.set_wh(tmpw,tmph);
320 //synfig::info("fw: %d, fh: %d",fw,fh);
322 //render the blur fodder
323 if(!context.accelerated_render(&worksurface,quality,workdesc,&stageone))
326 //render the background
327 if(!context.accelerated_render(surface,quality,renddesc,&stageone))
330 // Copy over the alpha
331 blurred.set_wh(worksurface.get_w(),worksurface.get_h());
332 for(int j=0;j<worksurface.get_h();j++)
333 for(int i=0;i<worksurface.get_w();i++)
334 blurred[j][i]=worksurface[j][i].get_a();
337 Blur(size,type,&stagetwo)(blurred,workdesc.get_br()-workdesc.get_tl(),blurred);
340 int u = halfsizex-(origin_u<0?origin_u:0), v = halfsizey-(origin_v<0?origin_v:0);
341 for(y=0;y<renddesc.get_h();y++,v++)
343 u = halfsizex-(origin_u<0?origin_u:0);
344 for(x=0;x<renddesc.get_w();x++,u++)
349 a.set_a(blurred.linear_sample(((float)origin_u+(float)u)/(float)fw,((float)origin_v+(float)v)/(float)fh));
351 a.set_a(1.0f-blurred.linear_sample(((float)origin_u+(float)u)/fw,((float)origin_v+(float)v)/(float)fh));
353 if(a.get_a() || get_blend_method()==Color::BLEND_STRAIGHT)
355 (*surface)[y][x]=Color::blend(a,(*surface)[y][x],get_amount(),get_blend_method());
362 if(cb && !cb->amount_complete(10000,10000))
364 //if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Renderer Failure",__LINE__));
372 Layer_Shade::get_param_vocab(void)const
374 Layer::Vocab ret(Layer_Composite::get_param_vocab());
376 ret.push_back(ParamDesc("color")
377 .set_local_name(_("Color"))
379 ret.push_back(ParamDesc("origin")
380 .set_local_name(_("Origin"))
382 ret.push_back(ParamDesc("size")
383 .set_local_name(_("Size"))
384 .set_description(_("Size of Shade"))
386 .set_origin("origin")
388 ret.push_back(ParamDesc("type")
389 .set_local_name(_("Type"))
390 .set_description(_("Type of blur to use"))
392 .add_enum_value(Blur::BOX,"box",_("Box Blur"))
393 .add_enum_value(Blur::FASTGAUSSIAN,"fastgaussian",_("Fast Gaussian Blur"))
394 .add_enum_value(Blur::CROSS,"cross",_("Cross-Hatch Blur"))
395 .add_enum_value(Blur::GAUSSIAN,"gaussian",_("Gaussian Blur"))
396 .add_enum_value(Blur::DISC,"disc",_("Disc Blur"))
399 ret.push_back(ParamDesc("invert")
400 .set_local_name(_("Invert"))
407 Layer_Shade::get_full_bounding_rect(Context context)const
410 return context.get_full_bounding_rect();
413 return Rect::full_plane();
415 Rect under(context.get_full_bounding_rect());
417 if(Color::is_onto(get_blend_method()))
420 Rect bounds((under+origin).expand_x(size[0]).expand_y(size[1]));