synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_filter/radialblur.cpp

   1 /*! ========================================================================
   2 ** Synfig
   3 ** Template File
   4 ** $Id: radialblur.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $
   5 **
   6 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   7 **
   8 **      This package is free software; you can redistribute it and/or
   9 **      modify it under the terms of the GNU General Public License as
  10 **      published by the Free Software Foundation; either version 2 of
  11 **      the License, or (at your option) any later version.
  12 **
  13 **      This package is distributed in the hope that it will be useful,
  14 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16 **      General Public License for more details.
  17 **
  18 ** === N O T E S ===========================================================
  19 **
  20 ** ========================================================================= */
  21
  22 /* === H E A D E R S ======================================================= */
  23
  24 #ifdef USING_PCH
  25 #       include "pch.h"
  26 #else
  27 #ifdef HAVE_CONFIG_H
  28 #       include <config.h>
  29 #endif
  30
  31 #include "radialblur.h"
  32 #include <synfig/string.h>
  33 #include <synfig/time.h>
  34 #include <synfig/context.h>
  35 #include <synfig/paramdesc.h>
  36 #include <synfig/renddesc.h>
  37 #include <synfig/surface.h>
  38 #include <synfig/value.h>
  39 #include <synfig/valuenode.h>
  40 #include <synfig/transform.h>
  41 #include <ETL/misc>
  42
  43 #endif
  44
  45 /* === M A C R O S ========================================================= */
  46
  47 /* === G L O B A L S ======================================================= */
  48
  49 SYNFIG_LAYER_INIT(RadialBlur);
  50 SYNFIG_LAYER_SET_NAME(RadialBlur,"radial_blur");
  51 SYNFIG_LAYER_SET_LOCAL_NAME(RadialBlur,_("Radial Blur"));
  52 SYNFIG_LAYER_SET_CATEGORY(RadialBlur,_("Blurs"));
  53 SYNFIG_LAYER_SET_VERSION(RadialBlur,"0.1");
  54 SYNFIG_LAYER_SET_CVS_ID(RadialBlur,"$Id: radialblur.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
  55
  56 /* === P R O C E D U R E S ================================================= */
  57
  58 /* === M E T H O D S ======================================================= */
  59
  60 /* === E N T R Y P O I N T ================================================= */
  61
  62 RadialBlur::RadialBlur():
  63         origin  (0,0),
  64         size    (0.2),
  65         fade_out(false)
  66 {
  67 }
  68
  69 RadialBlur::~RadialBlur()
  70 {
  71 }
  72
  73 bool
  74 RadialBlur::set_param(const String & param, const ValueBase &value)
  75 {
  76         IMPORT(origin);
  77         IMPORT(size);
  78         IMPORT(fade_out);
  79
  80         return Layer_Composite::set_param(param,value);
  81 }
  82
  83 ValueBase
  84 RadialBlur::get_param(const String &param)const
  85 {
  86         EXPORT(origin);
  87         EXPORT(size);
  88         EXPORT(fade_out);
  89
  90         EXPORT_NAME();
  91         EXPORT_VERSION();
  92
  93         return Layer_Composite::get_param(param);
  94 }
  95
  96 Layer::Vocab
  97 RadialBlur::get_param_vocab()const
  98 {
  99         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 100
 101         ret.push_back(ParamDesc("origin")
 102                 .set_local_name(_("Origin"))
 103                 .set_description(_("Point where you want the origin to be"))
 104         );
 105
 106         ret.push_back(ParamDesc("size")
 107                 .set_local_name(_("Size"))
 108                 .set_description(_("Size of blur"))
 109                 .set_origin("origin")
 110         );
 111
 112         ret.push_back(ParamDesc("fade_out")
 113                 .set_local_name(_("Fade Out"))
 114         );
 115
 116         return ret;
 117 }
 118
 119 Color
 120 RadialBlur::get_color(Context context, const Point &p)const
 121 {
 122         //! \writeme
 123         return context.get_color(p);
 124 }
 125
 126 bool
 127 RadialBlur::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 128 {
 129         if(cb && !cb->amount_complete(0,10000))
 130                 return false;
 131
 132         Surface tmp_surface;
 133
 134         if(!context.accelerated_render(surface,quality,renddesc,cb))
 135                 return false;
 136
 137         tmp_surface=*surface;
 138
 139         int x,y;
 140
 141         const Point tl(renddesc.get_tl());
 142         Point pos;
 143         const int w(surface->get_w());
 144         const int h(surface->get_h());
 145         const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
 146
 147         Surface::alpha_pen apen(surface->begin());
 148
 149         apen.set_alpha(get_amount());
 150         apen.set_blend_method(get_blend_method());
 151
 152         int steps(5);
 153
 154         if(quality>=9)steps=20;
 155         else if(quality>=5)steps=30;
 156         else if(quality>=4)steps=60;
 157         else if(quality>=3)steps=100;
 158         else steps=120;
 159
 160         Surface::value_prep_type cooker;
 161
 162         for(y=0,pos[1]=tl[1];y<h;y++,apen.inc_y(),apen.dec_x(x),pos[1]+=ph)
 163                 for(x=0,pos[0]=tl[0];x<w;x++,apen.inc_x(),pos[0]+=pw)
 164                 {
 165                         Point
 166                                 begin(pos-tl),
 167                                 end((pos-origin)*(1.0f-size)+origin-tl);
 168                         begin[0]/=pw;begin[1]/=ph;
 169                         end[0]/=pw;end[1]/=ph;
 170
 171                         Color pool(Color::alpha());
 172                         int poolsize(0);
 173
 174                         int x0(round_to_int(begin[0])),
 175                                 y0(round_to_int(begin[1])),
 176                                 x1(round_to_int(end[0])),
 177                                 y1(round_to_int(end[1]));
 178
 179                         int i;
 180                         int steep = 1;
 181                         int sx, sy;  /* step positive or negative (1 or -1) */
 182                         int dx, dy;  /* delta (difference in X and Y between points) */
 183                         int e;
 184                         int w(tmp_surface.get_w()),h(tmp_surface.get_h());
 185
 186                         dx = abs(x1 - x0);
 187                         sx = ((x1 - x0) > 0) ? 1 : -1;
 188                         dy = abs(y1 - y0);
 189                         sy = ((y1 - y0) > 0) ? 1 : -1;
 190                         if (dy > dx)
 191                         {
 192                                 steep = 0;
 193                                 swap(x0, y0);
 194                                 swap(dx, dy);
 195                                 swap(sx, sy);
 196                                 swap(w,h);
 197                         }
 198                         e = (dy << 1) - dx;
 199                         for (i = 0; i < dx; i++)
 200                         {
 201                                 if(y0>=0 && x0>=0 && y0<h && x0<w)
 202                                 {
 203                                         if(fade_out)
 204                                         {
 205                                                 if (steep)
 206                                                         pool+=cooker.cook(tmp_surface[y0][x0])*(i-dx);
 207                                                 else
 208                                                         pool+=cooker.cook(tmp_surface[x0][y0])*(i-dx);
 209                                                 poolsize+=(i-dx);
 210                                         }
 211                                         else
 212                                         {
 213                                                 if (steep)
 214                                                         pool+=cooker.cook(tmp_surface[y0][x0]);
 215                                                 else
 216                                                         pool+=cooker.cook(tmp_surface[x0][y0]);
 217                                                 poolsize+=1;
 218                                         }
 219                                 }
 220
 221                                 while (e >= 0)
 222                                 {
 223                                         y0 += sy;
 224                                         e -= (dx << 1);
 225                                 }
 226                                 x0 += sx;
 227                                 e += (dy << 1);
 228                         }
 229                         if(poolsize)
 230                         {
 231                                 pool/=poolsize;
 232                                 apen.put_value(cooker.uncook(pool));
 233                         }
 234 /*
 235                         Point begin,end;
 236                         begin=pos;
 237                         end=(pos-origin)*(1.0f-size)+origin;
 238
 239                         Color pool(Color::alpha());
 240                         float f,poolsize(0);
 241                         int i;
 242                         int steps(steps*size);
 243                         for(f=0,i=0;i<steps;i++,f+=1.0f/(steps-1))
 244                         {
 245                                 Point loc((end-begin)*f+begin-tl);
 246                                 loc[0]/=pw;loc[1]/=ph;
 247
 248                                 if(fade_out)
 249                                         pool+=tmp_surface.linear_sample(loc[0],loc[1])*(i-steps),poolsize+=(i-steps);
 250                                 else
 251                                         pool+=tmp_surface.linear_sample(loc[0],loc[1]),poolsize+=1;
 252                         }
 253                         pool/=poolsize;
 254                         apen.put_value(pool);
 255 */
 256                 }
 257
 258
 259         if(cb && !cb->amount_complete(10000,10000)) return false;
 260
 261         return true;
 262 }