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77 lines
4.4 KiB
C++
77 lines
4.4 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 "world/Track.h"
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#include "world/GaugeLine.h"
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namespace track_rails {
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void forget();
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// changes with every forget(): what's kept of the rails around holds as long as it doesn't
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unsigned int memo_stamp();
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rail_size measure_rail( gfx::vertex_array const &Profile );
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// the noses, wing rails and point rails at crossings at small angles are carved out of what lies around them, all by the same rules: no rail
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// reaches into the flangeway of another one where its wheels run, and two heads lying over each other share the room between them by what
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// the wheels of each roll on
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void carve_plans( TTrack &Track, rail_layout &Layout );
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// the layout of the track designed already to carve the tracks around against, before carving
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rail_layout const *designed_layout( TTrack &Track );
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// how many parts carving left with nothing of the head somewhere along them, since the start
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int carve_faults();
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// how far a wing rail reaches past the crossing point of the rails
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double wing_reach( double const Slope );
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double check_length( double const Slope );
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// how far from the tip the nose of a movable frog bends over to the wing rail
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double movable_nose_length( double const Slope );
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// the rails of the track are cut where they cross other rails: plain tracks, and switches whose frog is made from the rails
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bool cut_rails( TTrack const &Track );
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// the blades of the switch are shaped from the tip to the heel: with the rails cut, or alone where only the blades are on, but for the
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// switches of a double slip, whose blades end short of crossings found only with the rails cut
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bool shaped_blades( TTrack const &Track );
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int blade_steps( TTrack const &Track, int const Path );
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double blade_length( TTrack const &Track, int const Path );
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// the plain track a path of a switch goes on into at its end, laid the same way, which the blade of the path may run on into
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TTrack const *runon_track( TTrack const &Switch, int const Path );
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// how far the blade of the switch the track goes on from runs on into its rail of Side
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double blade_runon( TTrack const &Track, int const Side );
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material_handle cut_material( material_handle const Material );
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float tread_brightness( material_handle const Material, glm::vec2 const &Band );
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glm::vec3 tread_colour( material_handle const Material, glm::vec2 const &Band );
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material_handle tint_material( material_handle const Material, glm::vec3 const &Colour );
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// triangles closing the first and/or the last cross-section of a lofted strip, made of pairs of points for each of Ring profile points, both sides of each
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void cap_loft( gfx::vertex_array const &Strip, std::size_t const Ring, bool const Start, bool const End, gfx::vertex_array &Triangles );
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gfx::userdata_array worn_userdata( std::size_t const Count );
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// the ends of rails left open: at track ends with nothing joined, blade tips, the gap of a frog
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void cut_faces( gfx::vertex_array const &Strip, std::size_t const Ring, bool const Start, bool const End, gfx::geometrybank_handle const &Bank, TTrack::geometryhandle_sequence &Geometry );
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// the geometry of a track laid while one is alive goes into the chunks of the pool given, of the same type, before new ones
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class reused_chunks {
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public:
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reused_chunks( chunk_pool *Pool );
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~reused_chunks();
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private:
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chunk_pool *m_previous { nullptr };
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};
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gfx::geometry_handle insert_chunk( gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometrybank_handle const &Bank, int const Type );
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TSegment const &path_segment( TTrack const &Track, int const Path );
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int path_count( TTrack const &Track );
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TTrack *path_neighbour( TTrack const &Track, int const Path, int const End );
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double knuckle_bend( double const Into );
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bool replaced_check( std::vector<check_rail> const &Checks, double const Wingend, double const Direction, double &Far );
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bool replaced_by_wing( check_rail const &Check, knots::line const &Wingends );
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gauge_line const &rail_line( TTrack const &Track, int const Path, int const Side, bool const Blades );
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check_rail_set const &rail_checks( TTrack &Track );
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glm::dvec3 rail_point( TTrack const &Track, int const Path, int const Side, double const Distance, double const Lateral );
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void rail_offset( TTrack const &Track, int const Path, int const Side, glm::dvec3 const &Point, double &Distance, double &Lateral );
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} // namespace track_rails
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