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Snap corridor endpoints to target node top face

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Corridor vertical drops now land on the target node's actual top
boundary (Y = node.Y) at the clamped X position. Endpoints visually
connect to the node instead of floating near it.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
master
2026-04-02 12:40:00 +03:00
parent 793585f7db
commit 2c91241410
1 changed files with 18 additions and 4 deletions
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22
src/__Libraries/StellaOps.ElkSharp/ElkEdgeRouterIterative.WinnerRefinement.Hybrid.cs
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@@ -324,15 +324,29 @@ internal static partial class ElkEdgeRouterIterative
// corridors so they're visually distinct.
var localCorridorY = baseCorridorY - (corridorFixed * (nodeSizeClearance * 2d));
// Route through corridor then drop to the ORIGINAL target
// endpoint (which the router placed on the actual node boundary).
// Route through corridor then drop to the target. Re-snap
// the endpoint to the node boundary from the new approach
// direction (vertical drop from above).
var corridorTgtNode = nodesById.TryGetValue(edge.TargetNodeId ?? string.Empty, out var ctn) ? ctn : null;
ElkPoint endPoint;
if (corridorTgtNode is not null)
{
// Vertical drop lands on the top face at the drop X.
var dropEndX = Math.Clamp(tgt.X, corridorTgtNode.X + 4d, corridorTgtNode.X + corridorTgtNode.Width - 4d);
endPoint = new ElkPoint { X = dropEndX, Y = corridorTgtNode.Y };
}
else
{
endPoint = tgt;
}
var newPath = new List<ElkPoint>
{
src,
new() { X = stubX, Y = src.Y },
new() { X = stubX, Y = localCorridorY },
new() { X = tgt.X, Y = localCorridorY },
tgt,
new() { X = endPoint.X, Y = localCorridorY },
endPoint,
};
corridorResult[ei] = new ElkRoutedEdge
{