From df1568b36a25dc75ab02ecc095e21fef0c9f56ca Mon Sep 17 00:00:00 2001
From: ChenX <maple6@vip.qq.com>
Date: Mon, 5 Feb 2018 11:26:04 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E6=9B=B2=E7=BA=BF=E9=9C=80?=
 =?UTF-8?q?=E8=A6=81=E5=AE=9E=E7=8E=B0=E7=9A=84=E6=96=B9=E6=B3=95.?=
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---
 src/DatabaseServices/Curve.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/DatabaseServices/Curve.ts b/src/DatabaseServices/Curve.ts
index 9114fb8a0..abaa18649 100644
--- a/src/DatabaseServices/Curve.ts
+++ b/src/DatabaseServices/Curve.ts
@@ -23,7 +23,11 @@ export abstract class Curve extends Entity
     get EndPoint(): Vector3 { return; }
     get EndParam(): number { return; }
     get Area(): number { return; }
+    //获得曲线的面积,逆时针为正,顺时针为负.
+    get Area2(): number { return; }
     get IsClose(): boolean { return; }
+    //曲线为顺时针
+    get IsClockWise(): boolean { return this.Area2 < 0; }
 
     GetPointAtParam(param: number): Vector3 { return; }
     GetPointAtDistance(distance: number): Vector3 { return; }