1 /* === S Y N F I G ========================================================= */
2 /*! \file layer_bitmap.cpp
3 ** \brief Template Header
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
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.
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.
21 /* ========================================================================= */
23 /* === H E A D E R S ======================================================= */
25 #define SYNFIG_NO_ANGLE
34 #include "layer_bitmap.h"
48 #include "paramdesc.h"
53 /* === U S I N G =========================================================== */
55 using namespace synfig;
59 /* === G L O B A L S ======================================================= */
61 /* === P R O C E D U R E S ================================================= */
63 /* === M E T H O D S ======================================================= */
65 synfig::Layer_Bitmap::Layer_Bitmap():
66 Layer_Composite (1.0,Color::BLEND_COMPOSITE),
77 synfig::Layer_Bitmap::set_param(const String & param, ValueBase value)
82 if(param=="gamma_adjust"&& value.get_type()==ValueBase::TYPE_REAL)
84 gamma_adjust=1.0/value.get(Real());
85 //gamma_adjust.set_gamma(1.0/value.get(Real()));
89 return Layer_Composite::set_param(param,value);
93 synfig::Layer_Bitmap::get_param(const String & param)const
98 if(param=="gamma_adjust")
99 return 1.0/gamma_adjust;
103 if (trimmed) return int(width);
104 return surface.get_w();
108 if (trimmed) return int(height);
109 return surface.get_h();
112 return Layer_Composite::get_param(param);
116 Layer_Bitmap::get_param_vocab()const
118 Layer::Vocab ret(Layer_Composite::get_param_vocab());
120 ret.push_back(ParamDesc("tl")
121 .set_local_name(_("Top-Left"))
122 .set_description(_("Upper left-hand Corner of image"))
125 ret.push_back(ParamDesc("br")
126 .set_local_name(_("Bottom-Right"))
127 .set_description(_("Lower right-hand Corner of image"))
130 ret.push_back(ParamDesc("c")
131 .set_local_name(_("Interpolation"))
132 .set_description(_("What type of interpolation to use"))
134 .add_enum_value(0,"nearest",_("Nearest Neighbor"))
135 .add_enum_value(1,"linear",_("Linear"))
136 .add_enum_value(2,"cosine",_("Cosine"))
137 .add_enum_value(3,"cubic",_("Cubic"))
140 ret.push_back(ParamDesc("gamma_adjust")
141 .set_local_name(_("Gamma Adjustment"))
147 synfig::Layer::Handle
148 Layer_Bitmap::hit_check(synfig::Context context, const synfig::Point &pos)const
153 surface_pos[0]/=br[0]-tl[0];
154 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
156 surface_pos[1]/=br[1]-tl[1];
157 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
159 return const_cast<Layer_Bitmap*>(this);
163 return context.hit_check(pos);
168 synfig::Layer_Bitmap::filter(const Color& c)const
170 if(gamma_adjust==1.0)
175 x.set_r(powf((float)x.get_r(),gamma_adjust));
176 x.set_g(powf((float)x.get_g(),gamma_adjust));
177 x.set_b(powf((float)x.get_b(),gamma_adjust));
182 synfig::Layer_Bitmap::get_color(Context context, const Point &pos)const
187 return context.get_color(pos);
191 surface_pos[0]/=br[0]-tl[0];
192 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
194 surface_pos[1]/=br[1]-tl[1];
195 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
199 surface_pos[0]*=width;
200 surface_pos[1]*=height;
202 if (surface_pos[0] > left+surface.get_w() || surface_pos[0] < left || surface_pos[1] > top+surface.get_h() || surface_pos[1] < top)
203 return context.get_color(pos);
205 surface_pos[0] -= left;
206 surface_pos[1] -= top;
210 surface_pos[0]*=surface.get_w();
211 surface_pos[1]*=surface.get_h();
214 Color ret(Color::alpha());
222 ret=surface.cubic_sample(surface_pos[0],surface_pos[1]);
226 ret=surface.cosine_sample(surface_pos[0],surface_pos[1]);
229 ret=surface.linear_sample(surface_pos[0],surface_pos[1]);
231 case 0: // Nearest Neighbor
234 int x(min(surface.get_w()-1,max(0,round_to_int(surface_pos[0]))));
235 int y(min(surface.get_h()-1,max(0,round_to_int(surface_pos[1]))));
243 if(get_amount()==1 && get_blend_method()==Color::BLEND_STRAIGHT)
246 return Color::blend(ret,context.get_color(pos),get_amount(),get_blend_method());
250 return context.get_color(pos);
254 Layer_Bitmap::accelerated_render(Context context,Surface *out_surface,int quality, const RendDesc &renddesc, ProgressCallback *cb) const
259 else if(quality>=5 && interp>1)
262 // We can only handle NN and Linear at the moment
264 // return Layer_Composite::accelerated_render(context,out_surface,quality,renddesc,cb);
266 //if we don't actually have a valid surface just skip us
267 if(!surface.is_valid())
269 // Render what is behind us
270 return context.accelerated_render(out_surface,quality,renddesc,cb);
273 SuperCallback subcb(cb,1,10000,10001+renddesc.get_h());
275 if( get_amount()==1 &&
276 get_blend_method()==Color::BLEND_STRAIGHT &&
278 renddesc.get_tl()==tl &&
279 renddesc.get_br()==br)
281 // Check for the trivial case
282 if(surface.get_w()==renddesc.get_w() && surface.get_h()==renddesc.get_h() && gamma_adjust==1.0f)
284 if(cb && !cb->amount_complete(0,100)) return false;
285 *out_surface=surface;
286 if(cb && !cb->amount_complete(100,100)) return false;
289 out_surface->set_wh(renddesc.get_w(),renddesc.get_h());
293 // Render what is behind us
294 if(!context.accelerated_render(out_surface,quality,renddesc,&subcb))
298 if(cb && !cb->amount_complete(10000,10001+renddesc.get_h())) return false;
300 Point obr = renddesc.get_br(),
301 otl = renddesc.get_tl();
303 //Vector::value_type pw=renddesc.get_w()/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
304 //Vector::value_type ph=renddesc.get_h()/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
306 //A = representation of input (just tl,br) //just a scaling right now
307 //B = representation of output (just tl,br) //just a scaling right now
308 //sa = scaling for input (0,1) -> (0,w/h)
309 //sb = scaling for output (0,1) -> (0,w/h)
311 float outwf = obr[0] - otl[0];
312 float outhf = obr[1] - otl[1];
314 int inw = surface.get_w();
315 int inh = surface.get_h();
317 int outw = renddesc.get_w();
318 int outh = renddesc.get_h();
325 inwf = (br[0] - tl[0])*surface.get_w()/width;
326 inhf = (br[1] - tl[1])*surface.get_h()/height;
327 itl = Point(tl[0] + (br[0]-tl[0])*left/width,
328 tl[1] + (br[1]-tl[1])*top/height);
329 ibr = Point(tl[0] + (br[0]-tl[0])*(left+inw)/width,
330 tl[1] + (br[1]-tl[1])*(top+inh)/height);
334 inwf = br[0] - tl[0];
335 inhf = br[1] - tl[1];
340 //need to get the input coords in output space, so we can clip
342 //get the desired corners of the bitmap (in increasing order) in integers
343 //floating point corners
344 float x1f = (itl[0] - otl[0])*outw/outwf;
345 float x2f = (ibr[0] - otl[0])*outw/outwf;
346 float y1f = (itl[1] - otl[1])*outh/outhf;
347 float y2f = (ibr[1] - otl[1])*outh/outhf;
349 if(x1f > x2f) swap(x1f,x2f);
350 if(y1f > y2f) swap(y1f,y2f);
352 int x_start = max(0,(int)floor(x1f)); //probably floor
353 int x_end = min(outw,(int)ceil(x2f)); //probably ceil
354 int y_start = max(0,(int)floor(y1f)); //probably floor
355 int y_end = min(outh,(int)ceil(y2f)); //probably ceil
357 //need to get the x,y,dx,dy values from output space to input, so we can do fast interpolation
359 //get the starting position in input space... for interpolating
361 // in int -> out float:
362 // Sb(B^-1)A(Sa^-1) x
363 float inx_start = (((x_start/*+0.5f*/)*outwf/outw + otl[0]) - itl[0])*inw/inwf; //may want to bias this (center of pixel)???
364 float iny_start = (((y_start/*+0.5f*/)*outhf/outh + otl[1]) - itl[1])*inh/inhf; //may want to bias this (center of pixel)???
366 //calculate the delta values in input space for one pixel movement in output space
367 //same matrix but with a vector instead of a point...
368 float indx = outwf*(inw)/((outw)*inwf); //translations died
369 float indy = outhf*(inh)/((outh)*inhf); //translations died
371 //perhaps use a DDA algorithm... if faster...
372 // will still want pixel fractions to be floating point since colors are
374 //synfig::info("xstart:%d ystart:%d xend:%d yend:%d",x_start,y_start,x_end,y_end);
376 //start drawing at the start of the bitmap (either origin or corner of input...)
378 Surface::alpha_pen pen(out_surface->get_pen(x_start,y_start));
379 pen.set_alpha(get_amount());
380 pen.set_blend_method(get_blend_method());
382 //check if we should use the downscale filtering
385 //the stride of the value should be inverted because we want to downsample
386 //when the stride is small, not big
387 //int multw = (int)ceil(indx);
388 //int multh = (int)ceil(indy);
390 if(indx > 1.7 || indy > 1.7)
392 /*synfig::info("Decided to downsample? ratios - (%f,%f) -> (%d,%d)",
393 indx, indy, multw, multh); */
395 //use sample rect here...
400 //Point sample - truncate
401 iny = iny_start;//+0.5f;
402 for(y = y_start; y < y_end; ++y, pen.inc_y(), iny += indy)
404 inx = inx_start;//+0.5f;
405 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
407 Color rc = surface.sample_rect_clip(inx,iny,inx+indx,iny+indy);
408 pen.put_value(filter(rc));
410 pen.dec_x(x_end-x_start);
413 //Color c = (*out_surface)[0][0];
414 //synfig::info("ValueBase of first pixel = (%f,%f,%f,%f)",c.get_r(),c.get_g(),c.get_b(),c.get_a());
420 //perform normal interpolation
423 //synfig::info("Decided to do nearest neighbor");
427 //Point sample - truncate
428 iny = iny_start;//+0.5f;
429 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
431 inx = inx_start;//+0.5f;
432 int yclamp = min(inh-1, max(0, round_to_int(iny)));
433 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
435 int xclamp = min(inw-1, max(0, round_to_int(inx)));
436 Color c = filter(surface[yclamp][xclamp]);
437 pen.put_value(c); //must get rid of the clip
439 pen.dec_x(x_end-x_start);
447 //float xmf,xpf,ymf,ypf;
452 //can probably buffer for x values...
454 //loop and based on inx,iny sample input image
456 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
459 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
461 pen.put_value(filter(surface.linear_sample(inx,iny)));
463 pen.dec_x(x_end-x_start);
472 //float xmf,xpf,ymf,ypf;
477 //can probably buffer for x values...
479 //loop and based on inx,iny sample input image
481 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
484 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
486 pen.put_value(filter(surface.cosine_sample(inx,iny)));
488 pen.dec_x(x_end-x_start);
496 //float xmf,xpf,ymf,ypf;
501 //can probably buffer for x values...
503 //loop and based on inx,iny sample input image
505 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
508 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
510 pen.put_value(filter(surface.cubic_sample(inx,iny)));
512 pen.dec_x(x_end-x_start);
521 Layer_Bitmap::get_bounding_rect()const