2 #include <msp/strings/format.h>
3 #include "libr2c2/catalogue.h"
4 #include "libr2c2/track.h"
5 #include "libr2c2/tracktype.h"
6 #include "svgexporter.h"
12 SvgExporter::SvgExporter(const Layout &l):
18 void SvgExporter::save(const string &fn)
20 gauge = layout.get_catalogue().get_gauge()*1000;
22 // XXX This should be retrieved from track appearance
25 xmlpp::Document *doc = new xmlpp::Document;
26 xmlpp::Element *root = doc->create_root_node("svg", "http://www.w3.org/2000/svg");
28 xmlpp::Element *style = root->add_child("style");
29 style->set_attribute("type", "text/css");
30 style->set_child_text(format("\n.rail { fill: none; stroke: #000000; stroke-width: %.3f; }\n"
31 ".endpoint { fill: none; stroke: #808080; stroke-width: %.3f; }\n"
32 ".artnr { text-anchor: middle; font-size: %.3f; }\n",
33 rail_width, rail_width, gauge*0.75));
37 const set<Track *> &tracks = layout.get_all<Track>();
38 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
40 xmlpp::Element *elem = root->add_child("g");
41 save_track(**i, *elem);
43 unsigned n_endpoints = (*i)->get_type().get_endpoints().size();
44 for(unsigned j=0; j<n_endpoints; ++j)
46 Vector pos = (*i)->get_snap_node(j).position;
47 if(i==tracks.begin() && j==0)
51 minp.x = min(minp.x, pos.x);
52 minp.y = min(minp.y, pos.y);
53 maxp.x = max(maxp.x, pos.x);
54 maxp.y = max(maxp.y, pos.y);
59 root->set_attribute("viewBox", format("%.3f %.3f %.3f %.3f",
60 minp.x*1000-gauge*3, -maxp.y*1000-gauge*3, (maxp.x-minp.x)*1000+gauge*6, (maxp.y-minp.y)*1000+gauge*6));
62 doc->write_to_file_formatted(fn);
65 void SvgExporter::save_track(const Track &track, xmlpp::Element &group)
67 const Vector &pos = track.get_position();
68 const Angle &rot = track.get_rotation();
69 string transform = format("translate(%.3f %.3f) rotate(%.3f)", pos.x*1000, -pos.y*1000, -rot.degrees());
70 group.set_attribute("transform", transform);
72 const TrackType &type = track.get_type();
74 const vector<TrackType::Endpoint> &endpoints = type.get_endpoints();
75 for(vector<TrackType::Endpoint>::const_iterator i=endpoints.begin(); i!=endpoints.end(); ++i)
77 xmlpp::Element *elem = group.add_child("path");
78 elem->set_attribute("class", "endpoint");
80 Vector delta = rotated_vector(Vector(0, gauge, 0), i->dir);
82 string data = format("M %.3f %.3f L %.3f %.3f",
83 i->pos.x*1000+delta.x, -i->pos.y*1000-delta.y,
84 i->pos.x*1000-delta.x, -i->pos.y*1000+delta.y);
85 elem->set_attribute("d", data);
88 const vector<TrackPart> &parts = type.get_parts();
89 for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
91 OrientedPoint start = i->get_point(0);
92 OrientedPoint end = i->get_point(i->get_length());
95 xmlpp::Element *elem = group.add_child("path");
96 elem->set_attribute("class", "rail");
98 Vector delta1 = rotated_vector(Vector(0, (gauge+rail_width)*0.5, 0), start.rotation);
99 Vector delta2 = rotated_vector(Vector(0, (gauge+rail_width)*0.5, 0), end.rotation);
100 // Largely an educated guess, but seems to be accurate enough
101 float clen = i->get_length()*1000/2.9;
102 Vector ctrl1 = rotated_vector(Vector(clen, 0, 0), start.rotation);
103 Vector ctrl2 = rotated_vector(Vector(clen, 0, 0), end.rotation);
105 string data = format("M %.3f %.3f C %.3f %.3f %.3f %.3f %.3f %.3f")
106 (start.position.x*1000+delta1.x)(-start.position.y*1000-delta1.y)
107 (start.position.x*1000+delta1.x+ctrl1.x)(-start.position.y*1000-delta1.y-ctrl1.y)
108 (end.position.x*1000+delta2.x-ctrl2.x)(-end.position.y*1000-delta2.y+ctrl2.y)
109 (end.position.x*1000+delta2.x)(-end.position.y*1000-delta2.y).str();
110 data += format(" M %.3f %.3f C %.3f %.3f %.3f %.3f %.3f %.3f")
111 (start.position.x*1000-delta1.x)(-start.position.y*1000+delta1.y)
112 (start.position.x*1000-delta1.x+ctrl1.x)(-start.position.y*1000+delta1.y-ctrl1.y)
113 (end.position.x*1000-delta2.x-ctrl2.x)(-end.position.y*1000+delta2.y+ctrl2.y)
114 (end.position.x*1000-delta2.x)(-end.position.y*1000+delta2.y).str();
115 elem->set_attribute("d", data);
119 xmlpp::Element *elem = group.add_child("path");
120 elem->set_attribute("class", "rail");
122 Vector delta = rotated_vector(Vector(0, (gauge+rail_width)*0.5, 0), start.rotation);
124 string data = format("M %.3f %.3f L %.3f %.3f",
125 start.position.x*1000+delta.x, -start.position.y*1000-delta.y,
126 end.position.x*1000+delta.x, -end.position.y*1000-delta.y);
127 data += format(" M %.3f %.3f L %.3f %.3f",
128 start.position.x*1000-delta.x, -start.position.y*1000+delta.y,
129 end.position.x*1000-delta.x, -end.position.y*1000+delta.y);
130 elem->set_attribute("d", data);
134 OrientedPoint label_pt = parts.front().get_point(parts.front().get_length()/2);
136 label_pt.rotation.wrap_with_base(-Angle::quarter_turn());
137 if(label_pt.rotation>Angle::quarter_turn())
138 label_pt.rotation -= Angle::half_turn();
140 label_pt.position *= 1000;
141 label_pt.position += rotated_vector(Vector(0, -gauge*0.25, 0), label_pt.rotation);
143 xmlpp::Element *elem = group.add_child("text");
144 elem->set_attribute("class", "artnr");
145 elem->set_attribute("transform", format("translate(%.3f %.3f) rotate(%.3f)",
146 label_pt.position.x, -label_pt.position.y, -label_pt.rotation.degrees()));
147 elem->set_child_text(track.get_type().get_article_number().str());