feat(rails): the wing rails of the frogs of the low section of the blades, as Zu1-60, where the timbers have slide chairs: from 1.5 m before the throat to their ends the foot raised as much as the blades ride, the web shortened, the heads level with the rails beside, forged down to the plain rail along 0.5 m; a wing rail which is the stock rail of a blade too, as in the slips with the blades outside of the diamond, whole along its chairs; the fastening holding only rails raised as much moved up on a pad as wide as it, a raised rail on a fastening with others on a pad of its own

world/TrackSleepers.h

@@ -72,6 +72,8 @@ struct beam_model {
     glm::vec2 span { -1.3f, 1.3f }; // from and to along x, of the most detailed submodels of the whole model
     float seat { 0.f }; // the height in the model the feet of the rails go to
     float slide { 0.f }; // how far over the seat the blades of a switch slide, on the slide plates of the chairs; 0 without chairs
+    float bed { 0.f }; // the height in the model of the top of the timber
+    std::array<glm::vec2, part_count> heights {}; // from and to along y, of the parts
     std::vector<float> bands; // the squared distances the levels of detail of the model are seen from, the nearest first
     float length() const { return span.y - span.x; }
     // the model has the fastenings of the rails, put where the rails lie on its timbers
@@ -123,6 +125,11 @@ bool lays( TTrack const &Track );
 // how far the feet of the blades of the switch ride over those of its other rails, on the slide plates of the chairs of its
 // timbers; 0 where it lays none with chairs
 double blade_rise( TTrack const &Track );
+// how far the feet of its wing rails of the low section of the blades are raised as the blades; 0 where it lays no timbers with chairs
+double wing_rise( TTrack const &Track );
+// the stretch along the path its rail of Side is the stock rail of the blade of the other path along, with the slide chairs from
+// a little before the tip of the blade to its heel; from past to where there's none
+glm::dvec2 stock_stretch( TTrack const &Track, int const Path, int const Side );
 // where along the path of the track its rails lie on timbers shared with other tracks: where another track runs so near that
 // the plain sleepers of the two would touch, of the lengths of the models they'd be made of. this goes by the shape of the
 // tracks alone, so it holds whether the beams are drawn or not. the stretches in the order along the path, none where there