优化更新代码，添加界面功能并整合

ShrlAlgo.RvKits/RvIndependent/MetroGauges/LandXMLData/FeatureLinePoint.cs

@@ -0,0 +1,23 @@
+using System.Xml.Serialization;
+
+namespace ShrlAlgo.RvKits.RvIndependent.MetroGauges.LandXMLData
+{
+    [XmlType("FLPoint")]
+    [Serializable]
+    public class FeatureLinePoint : TextPoint2D
+    {
+        public FeatureLinePoint()
+        {
+            IsBreak = false;
+        }
+
+        public FeatureLinePoint(FeatureLinePoint source)
+            : base(source)
+        {
+            IsBreak = source.IsBreak;
+        }
+
+        [XmlAttribute("isBreak")]
+        public bool IsBreak { get; set; }
+    }
+}