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feat(editor): K on a track is a break of the grade, as a point of a road: the track split at the cursor, the point between the two at the height of the ground and the ballast there, each of them an even grade from its other end up to it

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Selftest kbreak: K on the track nearest a point, logs the joint against the ground.
This commit is contained in:
maj00r
2026-10-24 18:41:25 +02:00
parent 641619e13f
commit 9625b4b3d9
6 changed files with 57 additions and 9 deletions
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18
application/editormodetrackux.cpp
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@@ -1076,6 +1076,22 @@ void editor_mode::split_track_at(TTrack &Track, glm::dvec3 const &Point)
auto const before{editor_track::capture(Track)};
if (auto *created{editor_track::split_path(Track, parameter)})
{
// a break of the grade, as a point of a road: the point between the two takes the height of the ground and the ballast
// there, each of them an even grade from its other end up to it
auto const &path{Track.m_paths.front()};
auto const joint{path.points[segment_data::point::end]};
auto const height{bed_height(joint, geometry::plan_of(geometry::bezier{path}.first(1.0)), &Track)};
auto const none{std::numeric_limits<double>::quiet_NaN()};
auto const unknown = [](std::vector<glm::dvec3> const &Points, std::vector<glm::dvec2> const &) { return std::vector<double>(Points.size(), std::numeric_limits<double>::quiet_NaN()); };
for (auto *part : {&Track, created})
{
std::vector<segment_data> pieces{part->m_paths.front()};
auto &points{pieces.front().points};
points[part == &Track ? segment_data::point::end : segment_data::point::start].y = height;
ground_follow::follow(pieces, {points[segment_data::point::start].y, none, points[segment_data::point::end].y, none}, unknown);
part->m_paths.front() = pieces.front();
}
editor_track::commit({&Track, created});
push_track_snapshot({{&Track, before}}, {created});
straight_refresh();
}
@@ -1147,7 +1163,7 @@ void editor_mode::render_track_context()
ImGui::EndMenu();
}
ImGui::Separator();
if (ImGui::MenuItem(STR_C("Split here"), "K", false, normal))
if (ImGui::MenuItem(STR_C("Split here, a break of the grade"), "K", false, normal))
split_track_at(*track, point);
ImGui::Separator();
if (ImGui::MenuItem(STR_C("Switch"), "T", false, normal || track->eType == tt_Switch))