synfig-core/trunk/src/sinfg/layer_motionblur.cpp

   1 /* === S I N F G =========================================================== */
   2 /*!     \file layer_motionblur.h
   3 **      \brief Template Header
   4 **
   5 **      $Id: layer_motionblur.cpp,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002 Robert B. Quattlebaum Jr.
   9 **
  10 **      This software and associated documentation
  11 **      are CONFIDENTIAL and PROPRIETARY property of
  12 **      the above-mentioned copyright holder.
  13 **
  14 **      You may not copy, print, publish, or in any
  15 **      other way distribute this software without
  16 **      a prior written agreement with
  17 **      the copyright holder.
  18 **      \endlegal
  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 "string.h"
  32 #include "layer_motionblur.h"
  33 #include "time.h"
  34 #include "context.h"
  35 #include "paramdesc.h"
  36 #include "renddesc.h"
  37 #include "surface.h"
  38 #include "value.h"
  39 #include "valuenode.h"
  40 #include "canvas.h"
  41
  42 #endif
  43
  44 /* === U S I N G =========================================================== */
  45
  46 using namespace sinfg;
  47 using namespace etl;
  48 using namespace std;
  49
  50 /* === G L O B A L S ======================================================= */
  51
  52 SINFG_LAYER_INIT(Layer_MotionBlur);
  53 SINFG_LAYER_SET_NAME(Layer_MotionBlur,"MotionBlur");
  54 SINFG_LAYER_SET_LOCAL_NAME(Layer_MotionBlur,_("Motion Blur"));
  55 SINFG_LAYER_SET_CATEGORY(Layer_MotionBlur,_("Blurs"));
  56 SINFG_LAYER_SET_VERSION(Layer_MotionBlur,"0.1");
  57 SINFG_LAYER_SET_CVS_ID(Layer_MotionBlur,"$Id: layer_motionblur.cpp,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $");
  58
  59 /* === M E M B E R S ======================================================= */
  60
  61 Layer_MotionBlur::Layer_MotionBlur():
  62         Layer_Composite (1.0,Color::BLEND_STRAIGHT),
  63         aperture                (0)
  64 {
  65 }
  66
  67 bool
  68 Layer_MotionBlur::set_param(const String &param, const ValueBase &value)
  69 {
  70
  71         IMPORT(aperture);
  72         return Layer_Composite::set_param(param,value);
  73 }
  74
  75 ValueBase
  76 Layer_MotionBlur::get_param(const String &param)const
  77 {
  78         EXPORT(aperture);
  79
  80         EXPORT_NAME();
  81         EXPORT_VERSION();
  82
  83         return Layer_Composite::get_param(param);
  84 }
  85
  86 void
  87 Layer_MotionBlur::set_time(Context context, Time time)const
  88 {
  89         context.set_time(time);
  90         time_cur=time;
  91 }
  92
  93 void
  94 Layer_MotionBlur::set_time(Context context, Time time, const Point &pos)const
  95 {
  96         context.set_time(time,pos);
  97         time_cur=time;
  98 }
  99
 100 Color
 101 Layer_MotionBlur::get_color(Context context, const Point &pos)const
 102 {
 103 /*      if(aperture)
 104         {
 105                 Time time(time_cur);
 106                 time+=(Vector::value_type)( (signed)(RAND_MAX/2)-(signed)rand() )/(Vector::value_type)(RAND_MAX) *aperture -aperture*0.5;
 107                 context.set_time(time, pos);
 108         }
 109 */
 110         return context.get_color(pos);
 111 }
 112
 113 Layer::Vocab
 114 Layer_MotionBlur::get_param_vocab()const
 115 {
 116         Layer::Vocab ret;
 117         //ret=Layer_Composite::get_param_vocab();
 118
 119         ret.push_back(ParamDesc("aperture")
 120                 .set_local_name(_("Aperature"))
 121                 .set_description(_("Shutter Time"))
 122         );
 123
 124         return ret;
 125 }
 126
 127 bool
 128 Layer_MotionBlur::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 129 {
 130         if(aperture && quality<10)
 131         {
 132                 //int x, y;
 133                 SuperCallback subimagecb;
 134                 int samples=1;
 135                 switch(quality)
 136                 {
 137                         case 1: // Production Quality
 138                                 samples=32;
 139                                 break;
 140                         case 2: // Excellent Quality
 141                                 samples=24;
 142                                 break;
 143                         case 3: // Good Quality
 144                                 samples=16;
 145                                 break;
 146                         case 4: // Moderate Quality
 147                                 samples=12;
 148                                 break;
 149                         case 5: // Draft Quality
 150                                 samples=7;
 151                                 break;
 152                         case 6:
 153                                 samples=6;
 154                                 break;
 155                         case 7:
 156                                 samples=5;
 157                                 break;
 158                         case 8:
 159                                 samples=3;
 160                                 break;
 161                         case 9:
 162                                 samples=3;
 163                                 break;
 164                         case 10: // Rough Quality
 165             default:
 166                                 samples=1;
 167                                 break;
 168
 169                 }
 170
 171                 Surface tmp;
 172                 int i;
 173
 174                 surface->set_wh(renddesc.get_w(),renddesc.get_h());
 175                 surface->clear();
 176
 177                 for(i=0;i<samples;i++)
 178                 {
 179                         subimagecb=SuperCallback(cb,i*(5000/samples),(i+1)*(5000/samples),5000);
 180                         context.set_time(time_cur+(aperture/samples)*i-aperture*0.5);
 181                         if(!context.accelerated_render(&tmp,quality,renddesc,&subimagecb))
 182                                 return false;
 183                         for(int y=0;y<renddesc.get_h();y++)
 184                                 for(int x=0;x<renddesc.get_w();x++)
 185                                         (*surface)[y][x]+=tmp[y][x].premult_alpha();
 186                 }
 187                 for(int y=0;y<renddesc.get_h();y++)
 188                         for(int x=0;x<renddesc.get_w();x++)
 189                                 (*surface)[y][x]=((*surface)[y][x]/(float)samples).demult_alpha();
 190         }
 191         else
 192                 return context.accelerated_render(surface,quality,renddesc,cb);
 193
 194         return true;
 195 }