Fix attachment overshoot and semantic trace port geometry

2026-09-22 18:13:07 -07:00
parent 79cc9d5551
commit 3aa80de89c
11 changed files with 348 additions and 18 deletions
@@ -104,10 +104,21 @@ pub fn attachment_from_point(
        side,
        offset: projection::port_anchor_offset(node, side, cursor),
    };
+    // Measure side intent at the box, not from a distant overshoot: Euclidean
+    // distance differences converge outside a small symbol and would otherwise
+    // let hysteresis retain a perpendicular side indefinitely.
+    let boundary_cursor = pos(
+        cursor
+            .x
+            .clamp(node.position.x, node.position.x + node.size.width),
+        cursor
+            .y
+            .clamp(node.position.y, node.position.y + node.size.height),
+    );
    let distance = |side| {
        length(
            projection::port_anchor_position(node, side, candidate(side).offset),
-            cursor,
+            boundary_cursor,
        )
    };
    let mut side = [