synfig-core/trunk/src/modules/example/simplecircle.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file simplecircle.cpp
   3 **      \brief Implementation of the "Simple Circle" layer
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2008 Chris Moore
  10 **
  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.
  15 **
  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.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include <synfig/string.h>
  34 #include <synfig/time.h>
  35 #include <synfig/context.h>
  36 #include <synfig/paramdesc.h>
  37 #include <synfig/renddesc.h>
  38 #include <synfig/surface.h>
  39 #include <synfig/value.h>
  40 #include <synfig/valuenode.h>
  41
  42 #include "simplecircle.h"
  43
  44 #endif
  45
  46 /* === U S I N G =========================================================== */
  47
  48 using namespace etl;
  49 using namespace std;
  50 using namespace synfig;
  51
  52 /* === G L O B A L S ======================================================= */
  53
  54 SYNFIG_LAYER_INIT(SimpleCircle);
  55 SYNFIG_LAYER_SET_NAME(SimpleCircle,"simple_circle");
  56 SYNFIG_LAYER_SET_LOCAL_NAME(SimpleCircle,N_("Simple Circle"));
  57 SYNFIG_LAYER_SET_CATEGORY(SimpleCircle,N_("Example"));
  58 SYNFIG_LAYER_SET_VERSION(SimpleCircle,"0.1");
  59 SYNFIG_LAYER_SET_CVS_ID(SimpleCircle,"$Id$");
  60
  61 /* === P R O C E D U R E S ================================================= */
  62
  63 /* === M E T H O D S ======================================================= */
  64
  65 /* === E N T R Y P O I N T ================================================= */
  66
  67 SimpleCircle::SimpleCircle():
  68         Layer_Composite(1.0,Color::BLEND_STRAIGHT),
  69         color(Color::black()),
  70         center(0,0),
  71         radius(0.5)
  72 {
  73 }
  74
  75 bool
  76 SimpleCircle::set_param(const String & param, const ValueBase &value)
  77 {
  78         IMPORT(color);
  79         IMPORT(center);
  80         IMPORT(radius);
  81
  82         return Layer_Composite::set_param(param,value);
  83 }
  84
  85 ValueBase
  86 SimpleCircle::get_param(const String &param)const
  87 {
  88         EXPORT(color);
  89         EXPORT(center);
  90         EXPORT(radius);
  91
  92         EXPORT_NAME();
  93         EXPORT_VERSION();
  94
  95         return Layer_Composite::get_param(param);
  96 }
  97
  98 Layer::Vocab
  99 SimpleCircle::get_param_vocab()const
 100 {
 101         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 102
 103         ret.push_back(ParamDesc("color")
 104                 .set_local_name(_("Color"))
 105         );
 106
 107         ret.push_back(ParamDesc("center")
 108                 .set_local_name(_("Center"))
 109         );
 110
 111         ret.push_back(ParamDesc("radius")
 112                 .set_local_name(_("Radius"))
 113                 .set_description(_("This is the radius of the circle"))
 114                 .set_origin("center")
 115         );
 116
 117         return ret;
 118 }
 119
 120 Color
 121 SimpleCircle::get_color(Context context, const Point &pos)const
 122 {
 123
 124         if((pos-center).mag()<radius)
 125         {
 126                 if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 127                         return color;
 128                 else
 129                         return Color::blend(color,context.get_color(pos),get_amount(),get_blend_method());
 130         }
 131         else
 132                 return context.get_color(pos);
 133 }
 134
 135 synfig::Layer::Handle
 136 SimpleCircle::hit_check(synfig::Context context, const synfig::Point &pos)const
 137 {
 138         if((pos-center).mag()<radius)
 139                 return const_cast<SimpleCircle*>(this);
 140         else
 141                 return context.hit_check(pos);
 142 }
 143
 144 /*
 145 bool
 146 SimpleCircle::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 147 {
 148         if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
 149         {
 150                 // Mark our progress as starting
 151                 if(cb && !cb->amount_complete(0,1000))
 152                         return false;
 153
 154                 surface->set_wh(renddesc.get_w(),renddesc.get_h());
 155                 surface->fill(color);
 156
 157                 // Mark our progress as finished
 158                 if(cb && !cb->amount_complete(1000,1000))
 159                         return false;
 160
 161                 return true;
 162         }
 163
 164         SuperCallback supercb(cb,0,9500,10000);
 165
 166         if(!context.accelerated_render(surface,quality,renddesc,&supercb))
 167                 return false;
 168
 169         int x,y;
 170
 171         Surface::alpha_pen apen(surface->begin());
 172
 173         apen.set_value(color);
 174         apen.set_alpha(get_amount());
 175         apen.set_blend_method(get_blend_method());
 176
 177         for(y=0;y<renddesc.get_h();y++,apen.inc_y(),apen.dec_x(x))
 178                 for(x=0;x<renddesc.get_w();x++,apen.inc_x())
 179                         apen.put_value();
 180
 181         // Mark our progress as finished
 182         if(cb && !cb->amount_complete(10000,10000))
 183                 return false;
 184
 185         return true;
 186 }
 187 */