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 const Profile &rail_profile = layout.get_catalogue().get_rail_profile();
23 const Vector &rail_min = rail_profile.get_min_coords();
24 const Vector &rail_max = rail_profile.get_max_coords();
25 rail_width = (rail_max.x-rail_min.x)*1000;
27 xmlpp::Document *doc = new xmlpp::Document;
28 xmlpp::Element *root = doc->create_root_node("svg", "http://www.w3.org/2000/svg");
30 xmlpp::Element *style = root->add_child("style");
31 style->set_attribute("type", "text/css");
32 style->set_child_text(format("\n.rail { fill: none; stroke: #000000; stroke-width: %.3f; }\n"
33 ".endpoint { fill: none; stroke: #808080; stroke-width: %.3f; }\n"
34 ".artnr { text-anchor: middle; font-size: %.3f; }\n",
35 rail_width, rail_width, gauge*0.75));
39 const set<Track *> &tracks = layout.get_all<Track>();
40 for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
42 xmlpp::Element *elem = root->add_child("g");
43 save_track(**i, *elem);
45 unsigned n_endpoints = (*i)->get_type().get_endpoints().size();
46 for(unsigned j=0; j<n_endpoints; ++j)
48 Vector pos = (*i)->get_snap_node(j).position;
49 if(i==tracks.begin() && j==0)
53 minp.x = min(minp.x, pos.x);
54 minp.y = min(minp.y, pos.y);
55 maxp.x = max(maxp.x, pos.x);
56 maxp.y = max(maxp.y, pos.y);
61 root->set_attribute("viewBox", format("%.3f %.3f %.3f %.3f",
62 minp.x*1000-gauge*3, -maxp.y*1000-gauge*3, (maxp.x-minp.x)*1000+gauge*6, (maxp.y-minp.y)*1000+gauge*6));
64 doc->write_to_file_formatted(fn);
67 void SvgExporter::save_track(const Track &track, xmlpp::Element &group)
69 const Vector &pos = track.get_position();
70 const Angle &rot = track.get_rotation();
71 string transform = format("translate(%.3f %.3f) rotate(%.3f)", pos.x*1000, -pos.y*1000, -rot.degrees());
72 group.set_attribute("transform", transform);
74 const TrackType &type = track.get_type();
76 const vector<TrackType::Endpoint> &endpoints = type.get_endpoints();
77 for(vector<TrackType::Endpoint>::const_iterator i=endpoints.begin(); i!=endpoints.end(); ++i)
79 xmlpp::Element *elem = group.add_child("path");
80 elem->set_attribute("class", "endpoint");
82 Vector delta = rotated_vector(Vector(0, gauge, 0), i->dir);
84 string data = format("M %.3f %.3f L %.3f %.3f",
85 i->pos.x*1000+delta.x, -i->pos.y*1000-delta.y,
86 i->pos.x*1000-delta.x, -i->pos.y*1000+delta.y);
87 elem->set_attribute("d", data);
90 const vector<TrackPart> &parts = type.get_parts();
91 for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
93 OrientedPoint start = i->get_point(0);
94 OrientedPoint end = i->get_point(i->get_length());
97 xmlpp::Element *elem = group.add_child("path");
98 elem->set_attribute("class", "rail");
100 Vector delta1 = rotated_vector(Vector(0, (gauge+rail_width)*0.5, 0), start.rotation);
101 Vector delta2 = rotated_vector(Vector(0, (gauge+rail_width)*0.5, 0), end.rotation);
102 // Largely an educated guess, but seems to be accurate enough
103 float clen = i->get_length()*1000/2.9;
104 Vector ctrl1 = rotated_vector(Vector(clen, 0, 0), start.rotation);
105 Vector ctrl2 = rotated_vector(Vector(clen, 0, 0), end.rotation);
107 string data = format("M %.3f %.3f C %.3f %.3f %.3f %.3f %.3f %.3f")
108 (start.position.x*1000+delta1.x)(-start.position.y*1000-delta1.y)
109 (start.position.x*1000+delta1.x+ctrl1.x)(-start.position.y*1000-delta1.y-ctrl1.y)
110 (end.position.x*1000+delta2.x-ctrl2.x)(-end.position.y*1000-delta2.y+ctrl2.y)
111 (end.position.x*1000+delta2.x)(-end.position.y*1000-delta2.y).str();
112 data += format(" M %.3f %.3f C %.3f %.3f %.3f %.3f %.3f %.3f")
113 (start.position.x*1000-delta1.x)(-start.position.y*1000+delta1.y)
114 (start.position.x*1000-delta1.x+ctrl1.x)(-start.position.y*1000+delta1.y-ctrl1.y)
115 (end.position.x*1000-delta2.x-ctrl2.x)(-end.position.y*1000+delta2.y+ctrl2.y)
116 (end.position.x*1000-delta2.x)(-end.position.y*1000+delta2.y).str();
117 elem->set_attribute("d", data);
121 xmlpp::Element *elem = group.add_child("path");
122 elem->set_attribute("class", "rail");
124 Vector delta = rotated_vector(Vector(0, (gauge+rail_width)*0.5, 0), start.rotation);
126 string data = format("M %.3f %.3f L %.3f %.3f",
127 start.position.x*1000+delta.x, -start.position.y*1000-delta.y,
128 end.position.x*1000+delta.x, -end.position.y*1000-delta.y);
129 data += format(" M %.3f %.3f L %.3f %.3f",
130 start.position.x*1000-delta.x, -start.position.y*1000+delta.y,
131 end.position.x*1000-delta.x, -end.position.y*1000+delta.y);
132 elem->set_attribute("d", data);
136 OrientedPoint label_pt = parts.front().get_point(parts.front().get_length()/2);
138 label_pt.rotation.wrap_with_base(-Angle::quarter_turn());
139 if(label_pt.rotation>Angle::quarter_turn())
140 label_pt.rotation -= Angle::half_turn();
142 label_pt.position *= 1000;
143 label_pt.position += rotated_vector(Vector(0, -gauge*0.25, 0), label_pt.rotation);
145 xmlpp::Element *elem = group.add_child("text");
146 elem->set_attribute("class", "artnr");
147 elem->set_attribute("transform", format("translate(%.3f %.3f) rotate(%.3f)",
148 label_pt.position.x, -label_pt.position.y, -label_pt.rotation.degrees()));
149 elem->set_child_text(track.get_type().get_article_number().str());