From 407bc8fb147ffff63419e9f4ccdf1145593d14cc Mon Sep 17 00:00:00 2001
From: ChenX <maple6@vip.qq.com>
Date: Thu, 9 May 2019 11:36:13 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=20=E9=80=89=E6=8B=A9`LineSeg?=
 =?UTF-8?q?ment`=E6=97=B6=E9=94=99=E8=AF=AF=E7=9A=84=E9=97=AE=E9=A2=98.?=
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---
 src/Editor/SelectBase.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/Editor/SelectBase.ts b/src/Editor/SelectBase.ts
index 569001b2b..31fc34a13 100644
--- a/src/Editor/SelectBase.ts
+++ b/src/Editor/SelectBase.ts
@@ -1,4 +1,4 @@
-import { BufferGeometry, Face3, Frustum, Geometry, Matrix4, Object3D, PerspectiveCamera, Vector3, Line3 } from 'three';
+import { BufferGeometry, Face3, Frustum, Geometry, Line3, LineSegments, Matrix4, Object3D, PerspectiveCamera, Vector3 } from 'three';
 import { GetEntity, IsEntity } from '../Common/Utils';
 import { Entity } from '../DatabaseServices/Entity';
 import { IViewer } from '../GraphicsSystem/IView';
@@ -110,7 +110,7 @@ export class SelectSetBase
     {
         let pts: Array<Vector3> = [];
         let faces: Array<Face3> = [];
-        this.GetGeometrVerticesAndFaces(obj, pts, faces)
+        this.GetGeometrVerticesAndFaces(obj, pts, faces);
         return { pts, faces };
     }
     private GetGeometrVerticesAndFaces(obj: Object3D, pts: Vector3[], faces: Face3[])
@@ -191,9 +191,10 @@ export class SelectSetBase
             screenPts.push(p);
         }
 
-        if (faces.length == 0)
+        if (faces.length === 0)
         {
-            for (let index = 0; index < pts.length - 1; index++)
+            let add = (obj instanceof LineSegments) ? 2 : 1;
+            for (let index = 0; index < pts.length - 1; index += add)
             {
                 if (this.IntersectLineBase(index, index + 1, screenPts, pts))
                     return true;