source/libmarklin/trackpart.cpp

   1 /* $Id$
   2
   3 This file is part of the MSP Märklin suite
   4 Copyright © 2006-2008 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <cmath>
   9 #include "trackpart.h"
  10
  11 using namespace std;
  12
  13 namespace Marklin {
  14
  15 TrackPart::TrackPart():
  16         x(0),
  17         y(0),
  18         dir(0),
  19         length(0),
  20         radius(0),
  21         route(0),
  22         dead_end(false)
  23 { }
  24
  25 void TrackPart::collect_endpoints(vector<Endpoint> &eps)
  26 {
  27         eps.push_back(Endpoint(x, y, dir+M_PI, 1<<route));
  28
  29         if(dead_end)
  30                 ;
  31         else if(radius)
  32         {
  33                 float a=((radius<0) ? -length : length);
  34                 float c=cos(a);
  35                 float s=sin(a);
  36                 float rx=radius*sin(dir);
  37                 float ry=-radius*cos(dir);
  38                 eps.push_back(Endpoint(x+c*rx-s*ry-rx, y+c*ry+s*rx-ry, dir+a, 1<<route));
  39         }
  40         else
  41                 eps.push_back(Endpoint(x+cos(dir)*length, y+sin(dir)*length, dir, 1<<route));
  42 }
  43
  44
  45 TrackPart::Loader::Loader(TrackPart &p):
  46         part(p)
  47 {
  48         add("start",    &Loader::start);
  49         add("length",   &TrackPart::length);
  50         add("radius",   &TrackPart::radius);
  51         add("route",    &TrackPart::route);
  52         add("dead_end", &TrackPart::dead_end);
  53 }
  54
  55 void TrackPart::Loader::finish()
  56 {
  57         if(part.radius)
  58         {
  59                 part.length*=M_PI/180;
  60                 part.radius/=1000;
  61         }
  62         else
  63                 part.length/=1000;
  64
  65         part.x/=1000;
  66         part.y/=1000;
  67         part.dir*=M_PI/180;
  68 }
  69
  70 void TrackPart::Loader::start(float x, float y, float d)
  71 {
  72         part.x=x;
  73         part.y=y;
  74         part.dir=d;
  75 }
  76
  77 } // namespace Marklin