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66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
/*
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This Source Code Form is subject to the
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terms of the Mozilla Public License, v.
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2.0. If a copy of the MPL was not
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distributed with this file, You can
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obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <optional>
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#include <vector>
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#include <glm/glm.hpp>
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class TTrack;
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// a station as the signalling sees it: its switches, the tracks between them and the lines leading out, and its schematic,
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// the tracks laid out along the main track through it
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namespace station
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{
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struct options
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{
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double link{1500.0}; // m, switches joined by plain track no longer than this belong to the same station
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double approach{400.0}; // m, of each line leading out, taken beyond the outermost switch
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};
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struct path
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{
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TTrack *track{nullptr};
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int index{0}; // of the path of the track
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std::vector<glm::dvec3> points; // along the path, world space
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std::vector<glm::dvec2> schematic; // the chainage along the axis and the offset to the left of it, as the map shows it
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double length{0.0}; // in the plan
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bool approach{false}; // on a line leading out of the station
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};
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struct layout
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{
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std::vector<TTrack *> switches; // switches, crossings and turntables, by the chainage of their start
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std::vector<path> paths;
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std::vector<glm::dvec3> axis; // the main route through the station
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std::vector<double> chainage; // of the points of the axis
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double from{0.0}; // the chainage over which the switches lie
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double to{0.0};
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double low{0.0}; // the offsets of the outermost tracks of the station
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double high{0.0};
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bool kilometrage{false}; // the chainage runs with the km of the switches
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double km{0.0}; // at chainage 0, when it does
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};
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// the station of the switch, or of the plain track near one
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std::optional<layout> find(TTrack &From, options const &Options = {});
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// the chainage along the axis and the offset to the left of it, as the map shows it
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glm::dvec2 project(layout const &Layout, glm::dvec3 const &Point);
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// km at the chainage, when the station knows its kilometrage
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double km_of(layout const &Layout, double const Chainage);
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// one switch of each station of the scenery
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std::vector<TTrack *> stations(options const &Options = {});
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// the switches of the station of the switch, without laying it out
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std::vector<TTrack *> switches_of(TTrack &Switch, options const &Options = {});
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} // namespace station
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