修正排钻Box错误

src/DatabaseServices/3DSolid/GangDrill.ts

@@ -1,4 +1,4 @@
-import { BufferGeometry, CylinderBufferGeometry, Float32BufferAttribute, Group, LineSegments, Matrix4, Mesh, Object3D, Shape as TShape } from "three";
+import { Box3, BufferGeometry, CylinderBufferGeometry, Float32BufferAttribute, LineSegments, Matrix4, Mesh, Object3D, Shape as TShape, Vector3 } from "three";
 import { ColorMaterial } from '../../Common/ColorPalette';
 import { DisposeThreeObj } from '../../Common/Dispose';
 import { FixIndex } from "../../Common/Utils";
@@ -79,12 +79,7 @@ export class GangDrill extends Solid3D
     }
     get BoundingBox()
     {
-        let box = this.MeshGeometry.boundingBox;
+        let box = new Box3(new Vector3(-this._Radius, -this._Radius, 0), new Vector3(this._Radius, this._Radius, this._Height));
-        if (!box)
-        {
-            this.MeshGeometry.computeBoundingBox();
-            box = this.MeshGeometry.boundingBox;
-        }
         return box.applyMatrix4(this.OCS);
     }
     Collise(tarDrill: GangDrill): boolean