From 7d87fef7a05e8c3659b02a91fad656c90e5ca454 Mon Sep 17 00:00:00 2001
From: maj00r <maj00r@host>
Date: Sun, 4 Oct 2026 00:51:05 +0200
Subject: [PATCH] refactor(editor): anchor on the nearest place of a path

---
 application/editormodeinfra.cpp | 15 +++------------
 editor/editorInfra.cpp          |  8 ++++++++
 editor/editorInfra.hpp          |  2 ++
 3 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/application/editormodeinfra.cpp b/application/editormodeinfra.cpp
index 2e976d9d..67cf2333 100644
--- a/application/editormodeinfra.cpp
+++ b/application/editormodeinfra.cpp
@@ -567,10 +567,7 @@ std::optional<infra::binding> read_binding(std::string const &Text, scene::layer
 			break;
 		}
 		auto const &point{points[std::min<std::size_t>(i, points.size() - 1)]};
-		double s;
-		bool interior;
-		infra::project((*track)->m_paths[path], point, s, interior);
-		binding.anchors.push_back(infra::make_anchor({*track, path, s}, point));
+		binding.anchors.push_back(infra::make_anchor(*track, path, point));
 	}
 	if (false == found || binding.anchors.size() != points.size())
 		return std::nullopt;
@@ -938,10 +935,7 @@ void editor_mode::track_captured(TTrack const &Track)
 				auto placed{anchor};
 				if (glm::distance(infra::place(placed), points[i]) <= 0.01)
 					continue;
-				double s;
-				bool interior;
-				infra::project(path, points[i], s, interior);
-				anchor = infra::make_anchor({anchor.at.track, anchor.at.path, s}, points[i]);
+				anchor = infra::make_anchor(anchor.at.track, anchor.at.path, points[i]);
 			}
 			if (binding.turns && yaw.has_value() && binding.anchors.front().at.track == &Track)
 				binding.yaw = turn_of(binding, *yaw);
@@ -1189,10 +1183,7 @@ void editor_mode::infra_rebase()
 				binding.lost = true;
 				continue;
 			}
-			double s;
-			bool interior;
-			infra::project(anchor.at.track->m_paths[anchor.at.path], points[i], s, interior);
-			anchor = infra::make_anchor({anchor.at.track, anchor.at.path, s}, points[i]);
+			anchor = infra::make_anchor(anchor.at.track, anchor.at.path, points[i]);
 		}
 		if (binding.turns && yaw.has_value())
 			binding.yaw = turn_of(binding, *yaw);
diff --git a/editor/editorInfra.cpp b/editor/editorInfra.cpp
index a2fbc9ba..ba38961f 100644
--- a/editor/editorInfra.cpp
+++ b/editor/editorInfra.cpp
@@ -222,6 +222,14 @@ double heading(glm::dvec2 const &Forward)
 	return glm::degrees(std::atan2(Forward.x, Forward.y));
 }
 
+anchor make_anchor(TTrack *Track, int const Path, glm::dvec3 const &Point)
+{
+	double s;
+	bool interior;
+	project(Track->m_paths[Path], Point, s, interior);
+	return make_anchor({Track, Path, s}, Point);
+}
+
 anchor make_anchor(station const &At, glm::dvec3 const &Point)
 {
 	anchor result;
diff --git a/editor/editorInfra.hpp b/editor/editorInfra.hpp
index afb76d8e..64d32b25 100644
--- a/editor/editorInfra.hpp
+++ b/editor/editorInfra.hpp
@@ -83,6 +83,8 @@ struct anchor
 	double length{0.0};
 };
 anchor make_anchor(station const &At, glm::dvec3 const &Point);
+// anchor at the place of the path nearest to the point
+anchor make_anchor(TTrack *Track, int const Path, glm::dvec3 const &Point);
 // location for the current geometry of the path
 glm::dvec3 place(anchor &Anchor);