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Code Issues 151 Wiki Activity

feat(editor): self-test command guards logs each guard rail and what each of its ends and breaks is cut along: the rail of the other track, how far off its gauge line and how skewed; a fault when a cut is not along a rail, or a glued end of the frame of a crossing at a middle angle is not on the face of a guard rail of the other track

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maj00r
2026-10-13 18:41:56 +02:00
parent a93ed67c58
commit 420e4742b5
3 changed files with 138 additions and 0 deletions
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30
world/TrackRails.cpp
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@@ -289,6 +289,36 @@ void cut_faces( gfx::vertex_array const &Strip, std::size_t const Ring, bool con
}
}
glm::dvec3 rail_point( TTrack const &Track, int const Path, int const Side, double const Distance, double const Lateral ) {
auto const line { make_gauge_line( path_segment( Track, Path ), Side * 0.5 * std::abs( Track.fTrackWidth ), 0.0 ) };
glm::dvec3 point, tangent;
line.at( Distance, point, tangent );
return point - line.normal( Distance, Side ) * Lateral;
}
void rail_offset( TTrack const &Track, int const Path, int const Side, glm::dvec3 const &Point, double &Distance, double &Lateral ) {
auto const line { make_gauge_line( path_segment( Track, Path ), Side * 0.5 * std::abs( Track.fTrackWidth ), 0.0 ) };
auto const flat = []( glm::dvec3 const &V ) { return glm::dvec2{ V.x, V.z }; };
Distance = line.distances.front();
auto nearest { std::numeric_limits<double>::max() };
for( std::size_t i = 0; i < line.points.size(); ++i ) {
auto const gap { glm::length( flat( line.points[ i ] - Point ) ) };
if( gap < nearest ) {
nearest = gap;
Distance = line.distances[ i ];
}
}
glm::dvec3 point, tangent;
for( int step = 0; step < 8; ++step ) {
line.at( Distance, point, tangent );
Distance += glm::dot( flat( Point - point ), glm::normalize( flat( tangent ) ) );
}
line.at( Distance, point, tangent );
Lateral = -glm::dot( flat( Point - point ), flat( line.normal( Distance, Side ) ) );
}
} // namespace track_rails
using namespace track_rails;