From e03fd66f99e6da407f974d88074f96f119a18ed0 Mon Sep 17 00:00:00 2001
From: ChenX <maple6@vip.qq.com>
Date: Wed, 28 Mar 2018 17:17:01 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E5=96=84=E7=9B=B4=E7=BA=BF=E7=9A=84?=
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---
 __test__/Line/__snapshots__/line.test.ts.snap | 32 +++++++++++++++++++
 __test__/Line/line.test.ts                    | 25 +++++++++++++++
 src/DatabaseServices/Entity.ts                |  8 +++++
 3 files changed, 65 insertions(+)

diff --git a/__test__/Line/__snapshots__/line.test.ts.snap b/__test__/Line/__snapshots__/line.test.ts.snap
index 23bbc813a..e1c8f30d1 100644
--- a/__test__/Line/__snapshots__/line.test.ts.snap
+++ b/__test__/Line/__snapshots__/line.test.ts.snap
@@ -1,5 +1,37 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`拉伸直线的夹点 1`] = `
+Vector3 {
+  "x": 0,
+  "y": 10,
+  "z": 0,
+}
+`;
+
+exports[`拉伸直线的夹点 2`] = `
+Vector3 {
+  "x": 10,
+  "y": 5,
+  "z": 0,
+}
+`;
+
+exports[`拉伸直线的夹点 3`] = `
+Vector3 {
+  "x": 0,
+  "y": 10,
+  "z": 0,
+}
+`;
+
+exports[`拉伸直线的夹点 4`] = `
+Vector3 {
+  "x": 15,
+  "y": 5,
+  "z": 0,
+}
+`;
+
 exports[`最近点 1`] = `
 Vector3 {
   "x": -2.5,
diff --git a/__test__/Line/line.test.ts b/__test__/Line/line.test.ts
index 2686c85c8..0e1c1c30e 100644
--- a/__test__/Line/line.test.ts
+++ b/__test__/Line/line.test.ts
@@ -128,3 +128,28 @@ test('最近点', () =>
     expect(l.GetClosestPointTo(new Vector3(-5, 0, 0), false)/*?*/).toMatchSnapshot();//0,0,0.
 
 });
+
+
+
+test('拉伸直线的夹点', () =>
+{
+
+    let line = new Line(new Vector3(0, 0, 0), new Vector3(10, 0, 0));
+
+    //测试拉伸一个参数
+    line.MoveStretchPoints([0], new Vector3(0, 5, 0));
+
+    expect(line.StartPoint.toArray()).toMatchObject([0, 5, 0]);
+
+    //测试同时拉伸2个点的情况下
+    line.MoveStretchPoints([0, 1], new Vector3(0, 5, 0));
+
+    expect(line.StartPoint /*?*/).toMatchSnapshot();
+    expect(line.EndPoint /*?*/).toMatchSnapshot();
+
+
+    line.MoveStretchPoints([1], new Vector3(5, 0, 0));
+
+    expect(line.StartPoint).toMatchSnapshot();
+    expect(line.EndPoint).toMatchSnapshot();
+});
diff --git a/src/DatabaseServices/Entity.ts b/src/DatabaseServices/Entity.ts
index a6235c62b..6962aa457 100644
--- a/src/DatabaseServices/Entity.ts
+++ b/src/DatabaseServices/Entity.ts
@@ -204,6 +204,14 @@ export class Entity extends CADObject
     {
         return [];
     }
+
+    /**
+     * 拉伸夹点,用于Stretch命令
+     * 
+     * @param {Array<number>} indexList 拉伸点索引列表.
+     * @param {THREE.Vector3} vec 移动向量
+     * @memberof Entity
+     */
     MoveStretchPoints(indexList: Array<number>, vec: THREE.Vector3)
     {