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),
76 synfig::Layer_Bitmap::set_param(const String & param, ValueBase value)
81 if(param=="gamma_adjust"&& value.get_type()==ValueBase::TYPE_REAL)
83 gamma_adjust=1.0/value.get(Real());
84 //gamma_adjust.set_gamma(1.0/value.get(Real()));
88 return Layer_Composite::set_param(param,value);
92 synfig::Layer_Bitmap::get_param(const String & param)const
97 if(param=="gamma_adjust")
98 return 1.0/gamma_adjust;
102 return surface.get_w();
106 return surface.get_h();
109 return Layer_Composite::get_param(param);
113 Layer_Bitmap::get_param_vocab()const
115 Layer::Vocab ret(Layer_Composite::get_param_vocab());
117 ret.push_back(ParamDesc("tl")
118 .set_local_name(_("Top-Left"))
119 .set_description(_("Upper left-hand Corner of image"))
122 ret.push_back(ParamDesc("br")
123 .set_local_name(_("Bottom-Right"))
124 .set_description(_("Lower right-hand Corner of image"))
127 ret.push_back(ParamDesc("c")
128 .set_local_name(_("Interpolation"))
129 .set_description(_("What type of interpolation to use"))
131 .add_enum_value(0,"nearest",_("Nearest Neighbor"))
132 .add_enum_value(1,"linear",_("Linear"))
133 .add_enum_value(2,"cosine",_("Cosine"))
134 .add_enum_value(3,"cubic",_("Cubic"))
137 ret.push_back(ParamDesc("gamma_adjust")
138 .set_local_name(_("Gamma Adjustment"))
144 synfig::Layer::Handle
145 Layer_Bitmap::hit_check(synfig::Context context, const synfig::Point &pos)const
150 surface_pos[0]/=br[0]-tl[0];
151 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
153 surface_pos[1]/=br[1]-tl[1];
154 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
156 return const_cast<Layer_Bitmap*>(this);
160 return context.hit_check(pos);
165 synfig::Layer_Bitmap::filter(const Color& c)const
167 if(gamma_adjust==1.0)
172 x.set_r(powf((float)x.get_r(),gamma_adjust));
173 x.set_g(powf((float)x.get_g(),gamma_adjust));
174 x.set_b(powf((float)x.get_b(),gamma_adjust));
179 synfig::Layer_Bitmap::get_color(Context context, const Point &pos)const
184 return context.get_color(pos);
188 surface_pos[0]/=br[0]-tl[0];
189 if(surface_pos[0]<=1.0 && surface_pos[0]>=0.0)
191 surface_pos[1]/=br[1]-tl[1];
192 if(surface_pos[1]<=1.0 && surface_pos[1]>=0.0)
194 surface_pos[0]*=surface.get_w();
195 surface_pos[1]*=surface.get_h();
197 Color ret(Color::alpha());
205 ret=surface.cubic_sample(surface_pos[0],surface_pos[1]);
209 ret=surface.cosine_sample(surface_pos[0],surface_pos[1]);
212 ret=surface.linear_sample(surface_pos[0],surface_pos[1]);
214 case 0: // Nearest Neighbor
217 int x(min(surface.get_w()-1,max(0,round_to_int(surface_pos[0]))));
218 int y(min(surface.get_h()-1,max(0,round_to_int(surface_pos[1]))));
226 if(get_amount()==1 && get_blend_method()==Color::BLEND_STRAIGHT)
229 return Color::blend(ret,context.get_color(pos),get_amount(),get_blend_method());
233 return context.get_color(pos);
237 Layer_Bitmap::accelerated_render(Context context,Surface *out_surface,int quality, const RendDesc &renddesc, ProgressCallback *cb) const
242 else if(quality>=5 && interp>1)
245 // We can only handle NN and Linear at the moment
247 // return Layer_Composite::accelerated_render(context,out_surface,quality,renddesc,cb);
249 //if we don't actually have a valid surface just skip us
250 if(!surface.is_valid())
252 // Render what is behind us
253 return context.accelerated_render(out_surface,quality,renddesc,cb);
256 SuperCallback subcb(cb,1,10000,10001+renddesc.get_h());
258 if( get_amount()==1 &&
259 get_blend_method()==Color::BLEND_STRAIGHT &&
260 renddesc.get_tl()==tl &&
261 renddesc.get_br()==br)
263 // Check for the trivial case
264 if(surface.get_w()==renddesc.get_w() && surface.get_h()==renddesc.get_h() && gamma_adjust==1.0f)
266 if(cb && !cb->amount_complete(0,100)) return false;
267 *out_surface=surface;
268 if(cb && !cb->amount_complete(100,100)) return false;
271 out_surface->set_wh(renddesc.get_w(),renddesc.get_h());
275 // Render what is behind us
276 if(!context.accelerated_render(out_surface,quality,renddesc,&subcb))
280 if(cb && !cb->amount_complete(10000,10001+renddesc.get_h())) return false;
282 Point obr = renddesc.get_br(),
283 otl = renddesc.get_tl();
285 //Vector::value_type pw=renddesc.get_w()/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
286 //Vector::value_type ph=renddesc.get_h()/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
288 //A = representation of input (just tl,br) //just a scaling right now
289 //B = representation of output (just tl,br) //just a scaling right now
290 //sa = scaling for input (0,1) -> (0,w/h)
291 //sb = scaling for output (0,1) -> (0,w/h)
293 float inwf = br[0] - tl[0];
294 float inhf = br[1] - tl[1];
296 float outwf = obr[0] - otl[0];
297 float outhf = obr[1] - otl[1];
299 int inw = surface.get_w();
300 int inh = surface.get_h();
302 int outw = renddesc.get_w();
303 int outh = renddesc.get_h();
305 //need to get the input coords in output space, so we can clip
307 //get the desired corners of the bitmap (in increasing order) in integers
308 //floating point corners
309 float x1f = (tl[0] - otl[0])*outw/outwf;
310 float x2f = (br[0] - otl[0])*outw/outwf;
311 float y1f = (tl[1] - otl[1])*outh/outhf;
312 float y2f = (br[1] - otl[1])*outh/outhf;
314 if(x1f > x2f) swap(x1f,x2f);
315 if(y1f > y2f) swap(y1f,y2f);
317 int x_start = max(0,(int)floor(x1f)); //probably floor
318 int x_end = min(outw,(int)ceil(x2f)); //probably ceil
319 int y_start = max(0,(int)floor(y1f)); //probably floor
320 int y_end = min(outh,(int)ceil(y2f)); //probably ceil
322 //need to get the x,y,dx,dy values from output space to input, so we can do fast interpolation
324 //get the starting position in input space... for interpolating
326 // in int -> out float:
327 // Sb(B^-1)A(Sa^-1) x
328 float inx_start = (((x_start/*+0.5f*/)*outwf/outw + otl[0]) - tl[0])*inw/inwf; //may want to bias this (center of pixel)???
329 float iny_start = (((y_start/*+0.5f*/)*outhf/outh + otl[1]) - tl[1])*inh/inhf; //may want to bias this (center of pixel)???
331 //calculate the delta values in input space for one pixel movement in output space
332 //same matrix but with a vector instead of a point...
333 float indx = outwf*(inw)/((outw)*inwf); //translations died
334 float indy = outhf*(inh)/((outh)*inhf); //translations died
336 //perhaps use a DDA algorithm... if faster...
337 // will still want pixel fractions to be floating point since colors are
339 //synfig::info("xstart:%d ystart:%d xend:%d yend:%d",x_start,y_start,x_end,y_end);
341 //start drawing at the start of the bitmap (either origin or corner of input...)
343 Surface::alpha_pen pen(out_surface->get_pen(x_start,y_start));
344 pen.set_alpha(get_amount());
345 pen.set_blend_method(get_blend_method());
347 //check if we should use the downscale filtering
350 //the stride of the value should be inverted because we want to downsample
351 //when the stride is small, not big
352 //int multw = (int)ceil(indx);
353 //int multh = (int)ceil(indy);
355 if(indx > 1.7 || indy > 1.7)
357 /*synfig::info("Decided to downsample? ratios - (%f,%f) -> (%d,%d)",
358 indx, indy, multw, multh); */
360 //use sample rect here...
365 //Point sample - truncate
366 iny = iny_start;//+0.5f;
367 for(y = y_start; y < y_end; ++y, pen.inc_y(), iny += indy)
369 inx = inx_start;//+0.5f;
370 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
372 Color rc = surface.sample_rect_clip(inx,iny,inx+indx,iny+indy);
373 pen.put_value(filter(rc));
375 pen.dec_x(x_end-x_start);
378 //Color c = (*out_surface)[0][0];
379 //synfig::info("ValueBase of first pixel = (%f,%f,%f,%f)",c.get_r(),c.get_g(),c.get_b(),c.get_a());
385 //perform normal interpolation
388 //synfig::info("Decided to do nearest neighbor");
392 //Point sample - truncate
393 iny = iny_start;//+0.5f;
394 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
396 inx = inx_start;//+0.5f;
397 int yclamp = min(inh-1, max(0, round_to_int(iny)));
398 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
400 int xclamp = min(inw-1, max(0, round_to_int(inx)));
401 Color c = filter(surface[yclamp][xclamp]);
402 pen.put_value(c); //must get rid of the clip
404 pen.dec_x(x_end-x_start);
412 //float xmf,xpf,ymf,ypf;
417 //can probably buffer for x values...
419 //loop and based on inx,iny sample input image
421 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
424 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
426 pen.put_value(filter(surface.linear_sample(inx,iny)));
428 pen.dec_x(x_end-x_start);
437 //float xmf,xpf,ymf,ypf;
442 //can probably buffer for x values...
444 //loop and based on inx,iny sample input image
446 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
449 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
451 pen.put_value(filter(surface.cosine_sample(inx,iny)));
453 pen.dec_x(x_end-x_start);
461 //float xmf,xpf,ymf,ypf;
466 //can probably buffer for x values...
468 //loop and based on inx,iny sample input image
470 for(y = y_start; y < y_end; y++, pen.inc_y(), iny += indy)
473 for(x = x_start; x < x_end; x++, pen.inc_x(), inx += indx)
475 pen.put_value(filter(surface.cubic_sample(inx,iny)));
477 pen.dec_x(x_end-x_start);
486 Layer_Bitmap::get_bounding_rect()const