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Code Issues 150 Wiki Activity

feat(editor): compound curves with dual radii and transition

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This commit is contained in:
maj00r
2026-10-03 00:01:05 +02:00
parent 1985758a86
commit 40422aec30
5 changed files with 247 additions and 6 deletions
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40
editor/editorTrack.cpp
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@@ -1039,6 +1039,46 @@ bool editor_track::find_curve(TTrack &Track, straight_tolerance const &Tolerance
if (Curve.transition_in + Curve.transition_out >= std::accumulate(lengths.begin(), lengths.end(), 0.0))
Curve.transition_in = Curve.transition_out = 0.0;
Curve.radius = smallest;
std::vector<std::pair<double, double>> arcs;
for (std::size_t i = 0; i < run.size(); ++i)
{
if (varying[i])
continue;
auto const radius{path_radius(run[i].first->m_paths.front(), 0.5)};
if (radius <= 0.0)
continue;
if (false == arcs.empty() && std::abs(arcs.back().first - radius) < 0.05 * radius)
arcs.back().second += lengths[i];
else
arcs.emplace_back(radius, lengths[i]);
}
if (arcs.size() >= 2 && Curve.reversals == 0)
{
auto const &first{arcs.front()};
auto const &last{arcs.back()};
if (std::abs(first.first - last.first) > 0.1 * std::min(first.first, last.first))
{
Curve.compound = true;
Curve.radius = first.first;
Curve.radius2 = last.first;
auto const turnfirst{first.second / first.first};
auto const turnlast{last.second / last.first};
Curve.split = turnfirst / std::max(1e-9, turnfirst + turnlast);
double middle{0.0};
bool inside{false};
for (std::size_t i = 0; i < run.size(); ++i)
{
if (false == varying[i])
{
inside = true;
continue;
}
if (inside && i + 1 < run.size() && std::any_of(varying.begin() + i + 1, varying.end(), [](bool const Varying) { return false == Varying; }))
middle += lengths[i];
}
Curve.transition_middle = middle;
}
}
Curve.from = run.front().first;
Curve.to = run.back().first;
return true;