From 9b11877a4ceea83941077f6bfda103932bb56039 Mon Sep 17 00:00:00 2001
From: musicdie <ww_0321@163.com>
Date: Sat, 10 Sep 2022 09:26:38 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E8=8E=B7=E5=8F=96=E5=9D=97?=
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---
 .../ExtensionMethod/EntityEx.cs               | 24 ++++++++++++++++++-
 tests/TestShared/testblock.cs                 | 16 ++++++++++++-
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs b/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs
index 42de3f4..b863abb 100644
--- a/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs
+++ b/src/IFoxCAD.Cad.Shared/ExtensionMethod/EntityEx.cs
@@ -393,8 +393,30 @@ public static void ClipBlockRef(this BlockReference bref, Point3d pt1, Point3d p
         dict.SetAt<SpatialFilter>(spatialName, sf);
         // SetToDictionary(dict, spatialName, sf);
     }
+    /// <summary>
+    /// 获取裁剪块参照的裁剪定义
+    /// </summary>
+    /// <param name="bref">块参照</param>
+    /// <param name="tr">事务</param>
+    /// <returns>块裁剪定义</returns>
+    public static SpatialFilter? ClipedBlockRefPoints(this BlockReference bref, DBTrans? tr = null) 
+    {
+        tr ??= DBTrans.Top;
+        var filter = new SpatialFilter();
+        if (!bref.ExtensionDictionary.IsOk())
+            return null;
+        var extdict = tr.GetObject<DBDictionary>(bref.ExtensionDictionary, OpenMode.ForRead);
+        if (extdict != null && extdict.Contains(filterDictName))
+        {
+            var dict = tr.GetObject<DBDictionary>(extdict.GetAt(filterDictName), OpenMode.ForRead);
+            if (dict != null && dict.Contains(spatialName))
+            {
+                filter = tr.GetObject<SpatialFilter>(dict.GetAt(spatialName), OpenMode.ForRead);
+            }
+        }
+        return filter;
+    }
     #endregion
-
     #region 属性
     /// <summary>
     /// 更新动态块属性值
diff --git a/tests/TestShared/testblock.cs b/tests/TestShared/testblock.cs
index 1199e9e..a253505 100644
--- a/tests/TestShared/testblock.cs
+++ b/tests/TestShared/testblock.cs
@@ -193,7 +193,21 @@ public void Test_ClipBlock()
         var bref1 = tr.GetObject<BlockReference>(id);
         bref1?.ClipBlockRef(new Point3d(13, 13, 0), new Point3d(17, 17, 0));
     }
-
+    [CommandMethod("testclippoints")]
+    public static void testclippoints()
+    {
+        DBTrans tr = new DBTrans();
+        PromptEntityOptions peo = new PromptEntityOptions("选择块");
+        PromptEntityResult per = tr.Editor!.GetEntity(peo);
+        if (per.Status != PromptStatus.OK) return;
+        BlockReference block = tr.GetObject<BlockReference>(per.ObjectId)!;
+        var sfd = block.ClipedBlockRefPoints();
+        if (sfd is null) return;
+        var points = sfd?.Definition.GetPoints(); //裁剪边界
+#if NET45
+            var invert = sfd?.Inverted;                  //是否反向裁剪
+#endif
+    }
     /// <summary>
     /// 给用户的测试程序，不知道对错
     /// </summary>
-- 
Gitee