样式demo

ShrlAlgoToolkit.Revit/Assists/GeometryAssist.cs

@@ -6,6 +6,45 @@ namespace ShrlAlgoToolkit.Revit.Assists
 {
     internal class GeometryAssist
     {
+        /// <summary>
+        ///获取元素的包围框
+        /// </summary>
+        /// <param name="elements"></param>
+        /// <returns></returns>
+        public static BoundingBoxXYZ GetBoundingBox(List<Element> elements)
+        {
+            if (elements == null || elements.Count == 0)
+            {
+                return new BoundingBoxXYZ();
+            }
+
+            var gmax = XYZ.Zero;
+            var gmin = XYZ.Zero;
+            var elementIds = elements.Select(e => e.Id).ToList();
+            var doc = elements.FirstOrDefault()?.Document;
+            using (SubTransaction sub = new SubTransaction(doc))
+            {
+                sub.Start();
+                Group g;
+                if (doc.IsFamilyDocument)
+                {
+                    g = doc.FamilyCreate.NewGroup(elementIds);
+
+                }
+                else
+                {
+                    g = doc.Create.NewGroup(elementIds);
+                }
+                gmax = g.get_BoundingBox(null).Max;
+                gmin = g.get_BoundingBox(null).Min;
+                sub.RollBack();
+            }
+            return new BoundingBoxXYZ
+            {
+                Max = gmax,
+                Min = gmin
+            };
+        }
         /// <summary>
         /// 对曲线列表进行排序，使其正确排序和定向，形成线串。
         /// </summary>