From 2bcd8032183266b898d6914fe0a3a2abedb7543c Mon Sep 17 00:00:00 2001
From: Tongg <tongguibina@163.com>
Date: Tue, 17 Dec 2024 10:52:02 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E8=85=B0=E9=9D=A2=E4=BF=AE=E5=A4=8D?=
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---
 .../ViewportData/Helper/ViewportHelperPro.cs         | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Views/UserControl/ViewportData/Helper/ViewportHelperPro.cs b/Views/UserControl/ViewportData/Helper/ViewportHelperPro.cs
index aa31041..a6052b7 100644
--- a/Views/UserControl/ViewportData/Helper/ViewportHelperPro.cs
+++ b/Views/UserControl/ViewportData/Helper/ViewportHelperPro.cs
@@ -54,8 +54,16 @@ public class ViewportHelperPro
     {
         var meshBuilder = new MeshBuilder(true, false);
         foreach (var entity in entities)
-        {
-            meshBuilder.AddPolygon(new List<Vector3>() { entity.Point1, entity.Point2, entity.Point3 });
+        { 
+            if (entity.PlaneType == PlaneType.Girdle)
+            {
+                meshBuilder.AddTriangleFan(new List<Vector3>() { entity.Point1, entity.Point2, entity.Point3 },
+                    new List<Vector3>() { new Vector3(0,0,0), new Vector3(0,0,0), new Vector3(0,0,0) });
+            }
+            else
+            {
+                meshBuilder.AddPolygon(new List<Vector3>() { entity.Point1, entity.Point2, entity.Point3 });
+            }
         }
         var mesh = meshBuilder.ToMeshGeometry3D();