diff --git a/package.json b/package.json
index 10960e1..fde065a 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
     "@babylonjs/loaders": "^4.2.0",
     "@babylonjs/materials": "^4.2.0",
     "@types/cesium": "^1.59.5",
+    "@types/earcut": "^2.1.1",
     "@types/react-dom": "^17.0.10",
     "@types/swiper": "^5.2.1",
     "angular-calendar": "^0.28.2",
@@ -35,6 +36,7 @@
     "cesium": "^1.64.0",
     "class-transformer": "^0.4.0",
     "e-ngx-cesium": "^6.3.2",
+    "earcut": "^2.2.3",
     "echarts": "^4.6.0",
     "firebase": "^7.6.2",
     "install": "^0.13.0",
diff --git a/src/app/babylon/controller/status/login-status.ts b/src/app/babylon/controller/status/login-status.ts
index b5a796a..4334b2d 100644
--- a/src/app/babylon/controller/status/login-status.ts
+++ b/src/app/babylon/controller/status/login-status.ts
@@ -1,4 +1,7 @@
 import { HttpErrorResponse } from "@angular/common/http";
+import { Vector3 } from "@babylonjs/core";
+import { MeshBuilder } from "@babylonjs/core/Meshes/meshBuilder";
+import { PolygonMeshBuilder } from "@babylonjs/core/Meshes/polygonMesh";
 import { plainToClass } from "class-transformer";
 import { InstitutionData, NormalData } from "../../model/data/institution/institution-data";
 import { InsitutionDataSimple } from "../../model/data/institution/institution-data-simple";
@@ -123,10 +126,19 @@ export class LoginSatus extends StatusBase {
             console.log("加载完成", meshes);
         });
 
+        let l_xy = 100;
+        let result = [new Vector3(l_xy, l_xy), new Vector3(l_xy, -l_xy), new Vector3(-l_xy, -l_xy), new Vector3(-l_xy, l_xy)];
+
+        let poly_tri = new PolygonMeshBuilder("polytri", result, SceneManager.Instance.scene);
+        let mesh = poly_tri.build(true, 0);
+        mesh.position.y = -10;
+
+        console.log(poly_tri);
         //UIManager.open<TopbarWindow>(TopbarWindow);
         // this.openSelectWindow();//可以开启选择、新建单位
 
 
+
     }
     //退出状态
     onExit() {
diff --git a/yarn.lock b/yarn.lock
index 4f6838d..e2d741a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2683,6 +2683,11 @@
   dependencies:
     cesium "*"
 
+"@types/earcut@^2.1.1":
+  version "2.1.1"
+  resolved "https://registry.nlark.com/@types/earcut/download/@types/earcut-2.1.1.tgz#573a0af609f17005c751f6f4ffec49cfe358ea51"
+  integrity sha1-VzoK9gnxcAXHUfb0/+xJz+NY6lE=
+
 "@types/estree@*":
   version "0.0.50"
   resolved "https://registry.nlark.com/@types/estree/download/@types/estree-0.0.50.tgz#1e0caa9364d3fccd2931c3ed96fdbeaa5d4cca83"
@@ -4958,7 +4963,7 @@ e-ngx-cesium@^6.3.2:
     font-awesome "^4.7.0"
     lodash "^4.17.4"
 
-earcut@^2.0.0:
+earcut@^2.0.0, earcut@^2.2.3:
   version "2.2.3"
   resolved "https://registry.nlark.com/earcut/download/earcut-2.2.3.tgz#d44ced2ff5a18859568e327dd9c7d46b16f55cf4"
   integrity sha1-1EztL/WhiFlWjjJ92cfUaxb1XPQ=