修复空间拾取错误

src/Geometry/SpaceParse/ClampSpaceParseFix.ts

@@ -8,12 +8,16 @@ export class ClampSpaceParseFix extends ClampSpaceParse
     {
         this._signalDist = v;
     }
+    get SignalDist()
+    {
+        return this._signalDist;
+    }
 
     //virtual (请重载) 指定用户选择单块板的延伸空间
     async GetSignalDist(): Promise<PromptDistendResult>
     {
         let res = new PromptDistendResult();
-        res.Distance = this.SignalDist;
+        res.Distance = this._signalDist;
         res.Status = PromptStatus.OK;
         return res;
     }

src/Geometry/SpaceParse/ClampSpaceParseRay.ts

@@ -30,12 +30,11 @@ export class ClampSpaceParseRay extends ClampSpaceParseDist
                 return box;
         }
 
-        splitBoxs.sort((b1, b2) =>
-        {
-            return b1.getCenter(new Vector3()).distanceToSquared(this.selectRay.origin)
-                - b2.getCenter(new Vector3()).distanceToSquared(this.selectRay.origin);
-        });
-
-        return splitBoxs[0];
+        let [b1, b2] = splitBoxs;
+        if (b1.getCenter(new Vector3()).distanceToSquared(this.selectRay.origin)
+            < b2.getCenter(new Vector3()).distanceToSquared(this.selectRay.origin))
+            return b1;
+        else
+            return b2;
     }
 }