From 311792e54bda32e06964d7fc54924fcd3c314701 Mon Sep 17 00:00:00 2001
From: liqikun <liqikun@3dnest.cn>
Date: Tue, 28 May 2024 11:43:38 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E7=BB=98=E5=88=B6=E8=BF=87=E7=A8=8B?=
 =?UTF-8?q?=E4=B8=AD=EF=BC=8C=E6=92=A4=E9=94=80=E4=B8=8A=E4=B8=80=E4=B8=AA?=
 =?UTF-8?q?point?=
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---
 src/polygon/polygon.ts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/polygon/polygon.ts b/src/polygon/polygon.ts
index 67ca5a7..57c76a4 100644
--- a/src/polygon/polygon.ts
+++ b/src/polygon/polygon.ts
@@ -35,6 +35,25 @@ export default class Polygon extends Base {
     }
   }
 
+  /**
+   * backout the last point
+   */
+  removePoint() {
+    if (this.points.length > 0) {
+      this.points.pop();
+      this.setGeometryPoints(this.points);
+      if (this.points.length === 2) {
+        this.addTempLine();
+      } else {
+        this.removeTempLine();
+        this.drawPolygon();
+      }
+      if(this.points.length === 0) {
+        this.removeMoveListener();
+      }
+    }
+  }
+
   /**
    * Compare whether the positions of two points are equal.
    */