synfig-core/tags/synfig_0_61_06/src/modules/mod_geometry/region.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file region.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  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.
  14 **
  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.
  19 **      \endlegal
  20 **
  21 ** === N O T E S ===========================================================
  22 **
  23 ** ========================================================================= */
  24
  25 /* === H E A D E R S ======================================================= */
  26
  27 #ifdef USING_PCH
  28 #       include "pch.h"
  29 #else
  30 #ifdef HAVE_CONFIG_H
  31 #       include <config.h>
  32 #endif
  33
  34 #include "region.h"
  35 #include <ETL/stringf>
  36 #include <ETL/bezier>
  37 #include <ETL/hermite>
  38
  39 #include <synfig/string.h>
  40 #include <synfig/time.h>
  41 #include <synfig/context.h>
  42 #include <synfig/paramdesc.h>
  43 #include <synfig/renddesc.h>
  44 #include <synfig/surface.h>
  45 #include <synfig/value.h>
  46 #include <synfig/valuenode.h>
  47 #include <synfig/segment.h>
  48 #include <synfig/valuenode_bline.h>
  49
  50 #endif
  51
  52 using namespace etl;
  53
  54 /* === M A C R O S ========================================================= */
  55
  56 #define SAMPLES         75
  57
  58 /* === G L O B A L S ======================================================= */
  59
  60 SYNFIG_LAYER_INIT(Region);
  61 SYNFIG_LAYER_SET_NAME(Region,"region");
  62 SYNFIG_LAYER_SET_LOCAL_NAME(Region,_("Region"));
  63 SYNFIG_LAYER_SET_CATEGORY(Region,_("Geometry"));
  64 SYNFIG_LAYER_SET_VERSION(Region,"0.1");
  65 SYNFIG_LAYER_SET_CVS_ID(Region,"$Id$");
  66
  67 /* === P R O C E D U R E S ================================================= */
  68
  69 /* === M E T H O D S ======================================================= */
  70
  71 /* === E N T R Y P O I N T ================================================= */
  72
  73 Region::Region()
  74 {
  75         clear();
  76         vector<BLinePoint> bline_point_list;
  77         bline_point_list.push_back(BLinePoint());
  78         bline_point_list.push_back(BLinePoint());
  79         bline_point_list.push_back(BLinePoint());
  80         bline_point_list[0].set_vertex(Point(0,1));
  81         bline_point_list[1].set_vertex(Point(0,-1));
  82         bline_point_list[2].set_vertex(Point(1,0));
  83         bline_point_list[0].set_tangent(bline_point_list[1].get_vertex()-bline_point_list[2].get_vertex()*0.5f);
  84         bline_point_list[1].set_tangent(bline_point_list[2].get_vertex()-bline_point_list[0].get_vertex()*0.5f);
  85         bline_point_list[2].set_tangent(bline_point_list[0].get_vertex()-bline_point_list[1].get_vertex()*0.5f);
  86         bline_point_list[0].set_width(1.0f);
  87         bline_point_list[1].set_width(1.0f);
  88         bline_point_list[2].set_width(1.0f);
  89         bline=bline_point_list;
  90 }
  91
  92 void
  93 Region::sync()
  94 {
  95         if(bline.get_contained_type()==ValueBase::TYPE_BLINEPOINT)
  96         {
  97                 segment_list=convert_bline_to_segment_list(bline);
  98         }
  99         else
 100         {
 101                 synfig::warning("Region: incorrect type on bline, layer disabled");
 102                 clear();
 103                 return;
 104         }
 105
 106         if(segment_list.empty())
 107         {
 108                 synfig::warning("Region: segment_list is empty, layer disabled");
 109                 clear();
 110                 return;
 111         }
 112
 113         bool looped = bline.get_loop();
 114
 115         Vector::value_type n;
 116         etl::hermite<Vector> curve;
 117         vector<Point> vector_list;
 118
 119         vector<Segment>::const_iterator iter=segment_list.begin();
 120         //Vector                                                        last = iter->p1;
 121
 122         //make sure the shape has a clean slate for writing
 123         //clear();
 124
 125         //and start off at the first point
 126         //move_to(last[0],last[1]);
 127
 128         for(;iter!=segment_list.end();++iter)
 129         {
 130                 //connect them with a line if they aren't already joined
 131                 /*if(iter->p1 != last)
 132                 {
 133                         line_to(iter->p1[0],iter->p1[1]);
 134                 }
 135
 136                 //curve to the next end point
 137                 curve_to(iter->p1[0] + iter->t1[0]/3.0,iter->p1[1] + iter->t1[1]/3.0,
 138                                  iter->p2[0] - iter->t2[0]/3.0,iter->p2[1] - iter->t2[1]/3.0,
 139                                  iter->p2[0],iter->p2[1]);
 140
 141                 last = iter->p2;*/
 142
 143                 if(iter->t1.is_equal_to(Vector(0,0)) && iter->t2.is_equal_to(Vector(0,0)))
 144                 {
 145                         vector_list.push_back(iter->p2);
 146                 }
 147                 else
 148                 {
 149                         curve.p1()=iter->p1;
 150                         curve.t1()=iter->t1;
 151                         curve.p2()=iter->p2;
 152                         curve.t2()=iter->t2;
 153                         curve.sync();
 154
 155                         for(n=0.0;n<1.0;n+=1.0/SAMPLES)
 156                                 vector_list.push_back(curve(n));
 157                 }
 158         }
 159
 160         //add the starting point onto the end so it actually fits the shape, so we can be extra awesome...
 161         if(!looped)
 162                 vector_list.push_back(segment_list[0].p1);
 163
 164         clear();
 165         add_polygon(vector_list);
 166
 167         /*close();
 168         endpath();*/
 169 }
 170
 171 bool
 172 Region::set_param(const String & param, const ValueBase &value)
 173 {
 174         if(param=="segment_list")
 175         {
 176                 if(dynamic_param_list().count("segment_list"))
 177                 {
 178                         connect_dynamic_param("bline",dynamic_param_list().find("segment_list")->second);
 179                         disconnect_dynamic_param("segment_list");
 180                         synfig::warning("Region::set_param(): Updated valuenode connection to use the new \"bline\" parameter.");
 181                 }
 182                 else
 183                         synfig::warning("Region::set_param(): The parameter \"segment_list\" is deprecated. Use \"bline\" instead.");
 184         }
 185
 186         if(     (param=="segment_list" || param=="bline") && value.get_type()==ValueBase::TYPE_LIST)
 187         {
 188                 //if(value.get_contained_type()!=ValueBase::TYPE_BLINEPOINT)
 189                 //      return false;
 190
 191                 bline=value;
 192
 193                 return true;
 194         }
 195
 196 /*      if(     param=="segment_list" && value.get_type()==ValueBase::TYPE_LIST)
 197         {
 198                 if(value.get_contained_type()==ValueBase::TYPE_BLINEPOINT)
 199                         segment_list=convert_bline_to_segment_list(value);
 200                 else
 201                 if(value.get_contained_type()==ValueBase::TYPE_SEGMENT)
 202                         segment_list=value;
 203                 else
 204                 if(value.empty())
 205                         segment_list.clear();
 206                 else
 207                         return false;
 208                 sync();
 209                 return true;
 210         }
 211         */
 212         return Layer_Shape::set_param(param,value);
 213 }
 214
 215 ValueBase
 216 Region::get_param(const String& param)const
 217 {
 218         EXPORT(bline);
 219         EXPORT_NAME();
 220         EXPORT_VERSION();
 221
 222         return Layer_Shape::get_param(param);
 223 }
 224
 225 Layer::Vocab
 226 Region::get_param_vocab()const
 227 {
 228         Layer::Vocab ret(Layer_Shape::get_param_vocab());
 229
 230         ret.push_back(ParamDesc("bline")
 231                 .set_local_name(_("Vertices"))
 232                 .set_origin("offset")
 233         );
 234
 235         return ret;
 236 }
 237
 238 void
 239 Region::set_time(Context context, Time time)const
 240 {
 241         const_cast<Region*>(this)->sync();
 242         context.set_time(time);
 243 }
 244
 245 void
 246 Region::set_time(Context context, Time time, Vector pos)const
 247 {
 248         const_cast<Region*>(this)->sync();
 249         context.set_time(time,pos);
 250 }