From 474f1e94ab464e57c08c1e0af20906b2924fda95 Mon Sep 17 00:00:00 2001
From: ddCat <2695092045@qq.com>
Date: Tue, 18 Aug 2026 20:27:26 +0800
Subject: [PATCH] =?UTF-8?q?fix(canvas):=20=E5=AF=BC=E6=BC=94=E5=8F=B0=20-?=
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---
 .../components/canvas/director/director-viewport.tsx | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/web/src/components/canvas/director/director-viewport.tsx b/web/src/components/canvas/director/director-viewport.tsx
index b6dbd308c..1c2e19603 100644
--- a/web/src/components/canvas/director/director-viewport.tsx
+++ b/web/src/components/canvas/director/director-viewport.tsx
@@ -207,18 +207,22 @@ function DirectorModel({ object, selected, selectedBone, playhead, onSelectBone,
     const modelUrl = object.kind === "actor" || object.primitive === "character" ? DIRECTOR_DEFAULT_ACTOR_URL : object.url;
     const handleModelPointerDown = useCallback((event: ThreeEvent<PointerEvent>) => {
         if (!selected || !rig) return;
-        let nearest: { bone: string; distance: number } | null = null;
+        let nearestBone: string | null = null;
+        let nearestDistance = Number.POSITIVE_INFINITY;
         Object.entries(rig.boneMap).forEach(([bone, name]) => {
             if (!name) return;
             const target = model?.getObjectByName(name);
             if (!target) return;
             const distance = event.ray.distanceSqToPoint(target.getWorldPosition(new Vector3()));
-            if (distance <= 0.12 ** 2 && (!nearest || distance < nearest.distance)) nearest = { bone, distance };
+            if (distance <= 0.12 ** 2 && distance < nearestDistance) {
+                nearestBone = bone;
+                nearestDistance = distance;
+            }
         });
-        if (!nearest) return;
+        if (!nearestBone) return;
         // 模型表面可能先于关节控制球被射线命中，用最近骨骼保证点击仍可选中。
         event.stopPropagation();
-        onSelectBone(nearest.bone);
+        onSelectBone(nearestBone);
     }, [model, onSelectBone, rig, selected]);
 
     useEffect(() => { onActorRigReadyRef.current = onActorRigReady; }, [onActorRigReady]);