synfig-core/trunk/src/modules/mod_geometry/region.cpp

   1 /*! ========================================================================
   2 ** Sinfg
   3 ** Template File
   4 ** $Id: region.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $
   5 **
   6 ** Copyright (c) 2002 Robert B. Quattlebaum Jr.
   7 **
   8 ** This software and associated documentation
   9 ** are CONFIDENTIAL and PROPRIETARY property of
  10 ** the above-mentioned copyright holder.
  11 **
  12 ** You may not copy, print, publish, or in any
  13 ** other way distribute this software without
  14 ** a prior written agreement with
  15 ** the copyright holder.
  16 **
  17 ** === N O T E S ===========================================================
  18 **
  19 ** ========================================================================= */
  20
  21 /* === H E A D E R S ======================================================= */
  22
  23 #ifdef USING_PCH
  24 #       include "pch.h"
  25 #else
  26 #ifdef HAVE_CONFIG_H
  27 #       include <config.h>
  28 #endif
  29
  30 #include "region.h"
  31 #include <ETL/stringf>
  32 #include <ETL/bezier>
  33 #include <ETL/hermite>
  34
  35 #include <sinfg/string.h>
  36 #include <sinfg/time.h>
  37 #include <sinfg/context.h>
  38 #include <sinfg/paramdesc.h>
  39 #include <sinfg/renddesc.h>
  40 #include <sinfg/surface.h>
  41 #include <sinfg/value.h>
  42 #include <sinfg/valuenode.h>
  43 #include <sinfg/segment.h>
  44 #include <sinfg/valuenode_bline.h>
  45
  46 #endif
  47
  48 using namespace etl;
  49
  50 /* === M A C R O S ========================================================= */
  51
  52 #define SAMPLES         75
  53
  54 /* === G L O B A L S ======================================================= */
  55
  56 SINFG_LAYER_INIT(Region);
  57 SINFG_LAYER_SET_NAME(Region,"region");
  58 SINFG_LAYER_SET_LOCAL_NAME(Region,_("Region"));
  59 SINFG_LAYER_SET_CATEGORY(Region,_("Geometry"));
  60 SINFG_LAYER_SET_VERSION(Region,"0.1");
  61 SINFG_LAYER_SET_CVS_ID(Region,"$Id: region.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
  62
  63 /* === P R O C E D U R E S ================================================= */
  64
  65 /* === M E T H O D S ======================================================= */
  66
  67 /* === E N T R Y P O I N T ================================================= */
  68
  69 Region::Region()
  70 {
  71         clear();
  72         vector<BLinePoint> bline_point_list;
  73         bline_point_list.push_back(BLinePoint());
  74         bline_point_list.push_back(BLinePoint());
  75         bline_point_list.push_back(BLinePoint());
  76         bline_point_list[0].set_vertex(Point(0,1));
  77         bline_point_list[1].set_vertex(Point(0,-1));
  78         bline_point_list[2].set_vertex(Point(1,0));
  79         bline_point_list[0].set_tangent(bline_point_list[1].get_vertex()-bline_point_list[2].get_vertex()*0.5f);
  80         bline_point_list[1].set_tangent(bline_point_list[2].get_vertex()-bline_point_list[0].get_vertex()*0.5f);
  81         bline_point_list[2].set_tangent(bline_point_list[0].get_vertex()-bline_point_list[1].get_vertex()*0.5f);
  82         bline_point_list[0].set_width(1.0f);
  83         bline_point_list[1].set_width(1.0f);
  84         bline_point_list[2].set_width(1.0f);
  85         bline=bline_point_list;
  86 }
  87
  88 void
  89 Region::sync()
  90 {
  91         if(bline.get_contained_type()==ValueBase::TYPE_BLINEPOINT)
  92         {
  93                 segment_list=convert_bline_to_segment_list(bline);
  94         }
  95         else
  96         {
  97                 sinfg::warning("Region: incorrect type on bline, layer disabled");
  98                 clear();
  99                 return;
 100         }
 101
 102         if(segment_list.empty())
 103         {
 104                 sinfg::warning("Region: segment_list is empty, layer disabled");
 105                 clear();
 106                 return;
 107         }
 108
 109         bool looped = bline.get_loop();
 110
 111         Vector::value_type n;
 112         etl::hermite<Vector> curve;
 113         vector<Point> vector_list;
 114
 115         vector<Segment>::const_iterator iter=segment_list.begin();
 116         //Vector                                                        last = iter->p1;
 117
 118         //make sure the shape has a clean slate for writing
 119         //clear();
 120
 121         //and start off at the first point
 122         //move_to(last[0],last[1]);
 123
 124         for(;iter!=segment_list.end();++iter)
 125         {
 126                 //connect them with a line if they aren't already joined
 127                 /*if(iter->p1 != last)
 128                 {
 129                         line_to(iter->p1[0],iter->p1[1]);
 130                 }
 131
 132                 //curve to the next end point
 133                 curve_to(iter->p1[0] + iter->t1[0]/3.0,iter->p1[1] + iter->t1[1]/3.0,
 134                                  iter->p2[0] - iter->t2[0]/3.0,iter->p2[1] - iter->t2[1]/3.0,
 135                                  iter->p2[0],iter->p2[1]);
 136
 137                 last = iter->p2;*/
 138
 139                 if(iter->t1.is_equal_to(Vector(0,0)) && iter->t2.is_equal_to(Vector(0,0)))
 140                 {
 141                         vector_list.push_back(iter->p2);
 142                 }
 143                 else
 144                 {
 145                         curve.p1()=iter->p1;
 146                         curve.t1()=iter->t1;
 147                         curve.p2()=iter->p2;
 148                         curve.t2()=iter->t2;
 149                         curve.sync();
 150
 151                         for(n=0.0;n<1.0;n+=1.0/SAMPLES)
 152                                 vector_list.push_back(curve(n));
 153                 }
 154         }
 155
 156         //add a single point onto the end so it actually fits the shape, so we can be awesome...
 157         if(!looped)
 158         {
 159                 vector_list.push_back(curve.p2());
 160         }
 161
 162         clear();
 163         add_polygon(vector_list);
 164
 165         /*close();
 166         endpath();*/
 167 }
 168
 169 bool
 170 Region::set_param(const String & param, const ValueBase &value)
 171 {
 172         if(param=="segment_list")
 173         {
 174                 if(dynamic_param_list().count("segment_list"))
 175                 {
 176                         connect_dynamic_param("bline",dynamic_param_list().find("segment_list")->second);
 177                         disconnect_dynamic_param("segment_list");
 178                         sinfg::warning("Region::set_param(): Updated valuenode connection to use the new \"bline\" parameter.");
 179                 }
 180                 else
 181                         sinfg::warning("Region::set_param(): The parameter \"segment_list\" is deprecated. Use \"bline\" instead.");
 182         }
 183
 184         if(     (param=="segment_list" || param=="bline") && value.get_type()==ValueBase::TYPE_LIST)
 185         {
 186                 //if(value.get_contained_type()!=ValueBase::TYPE_BLINEPOINT)
 187                 //      return false;
 188
 189                 bline=value;
 190
 191                 return true;
 192         }
 193
 194 /*      if(     param=="segment_list" && value.get_type()==ValueBase::TYPE_LIST)
 195         {
 196                 if(value.get_contained_type()==ValueBase::TYPE_BLINEPOINT)
 197                         segment_list=convert_bline_to_segment_list(value);
 198                 else
 199                 if(value.get_contained_type()==ValueBase::TYPE_SEGMENT)
 200                         segment_list=value;
 201                 else
 202                 if(value.empty())
 203                         segment_list.clear();
 204                 else
 205                         return false;
 206                 sync();
 207                 return true;
 208         }
 209         */
 210         return Layer_Shape::set_param(param,value);
 211 }
 212
 213 ValueBase
 214 Region::get_param(const String& param)const
 215 {
 216         EXPORT(bline);
 217         EXPORT_NAME();
 218         EXPORT_VERSION();
 219
 220         return Layer_Shape::get_param(param);
 221 }
 222
 223 Layer::Vocab
 224 Region::get_param_vocab()const
 225 {
 226         Layer::Vocab ret(Layer_Shape::get_param_vocab());
 227
 228         ret.push_back(ParamDesc("bline")
 229                 .set_local_name(_("Vertices"))
 230                 .set_origin("offset")
 231         );
 232
 233         return ret;
 234 }
 235
 236 void
 237 Region::set_time(Context context, Time time)const
 238 {
 239         const_cast<Region*>(this)->sync();
 240         context.set_time(time);
 241 }
 242
 243 void
 244 Region::set_time(Context context, Time time, Vector pos)const
 245 {
 246         const_cast<Region*>(this)->sync();
 247         context.set_time(time,pos);
 248 }