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Code Issues 145 Wiki Activity

feat(track): the foot of the ballast stays on the ground as designed

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Rails, sleepers and the top of the ballast go with the unevenness, the
slope of the ballast takes up the difference.
This commit is contained in:
maj00r
2026-10-31 18:27:19 +01:00
parent 6aed9ec5bd
commit 3dbe8a75f8
6 changed files with 31 additions and 4 deletions
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7
world/Segment.cpp
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@@ -408,11 +408,12 @@ void TSegment::settle_vertex( gfx::basic_vertex &Vertex, glm::dvec3 const &Origi
if( false == m_uneven ) {
return;
}
// the rails settling apart turn about the middle of the track, what's outside them follows the rail
// the rails settling apart turn about the middle of the track, what's outside them follows the rail; the foot of the ballast stays
auto const gauge { std::max( std::abs( pOwner->fTrackWidth ), 0.1f ) };
auto const across { std::clamp( glm::dot( Vertex.position - Position, Parallel ), -0.5f * gauge, 0.5f * gauge ) };
Vertex.position.y -= static_cast<float>( track_uneven::stray_per_mm * pOwner->uneven_at( Distance ).cross * track_uneven::level( Origin + glm::dvec3 { Position }, glm::dvec3 { Parallel } ) * across / gauge );
Vertex.position += glm::vec3 { stray( Origin + glm::dvec3 { Vertex.position }, Distance ) };
auto const share { pOwner->uneven_bed_share( Position.y - Vertex.position.y ) };
Vertex.position.y -= static_cast<float>( share * track_uneven::stray_per_mm * pOwner->uneven_at( Distance ).cross * track_uneven::level( Origin + glm::dvec3 { Position }, glm::dvec3 { Parallel } ) * across / gauge );
Vertex.position += glm::vec3 { share * stray( Origin + glm::dvec3 { Vertex.position }, Distance ) };
}
void TSegment::design_position(double const fDistance, glm::dvec3 &position, glm::vec3 &rotation) const {