2nd update on 20230415 by nitload youmu

源代码/StgSharp/Geometries/IPlainGeometryCombination.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Geometries
+{
+    public abstract class IPlainGeometryCombination:LinkedList<IPlainGeometry>
+    {
+        internal readonly uint _bornTick;
+
+        internal abstract void toSimpleGeometry();
+
+        public IPlainGeometryCombination(uint bornTime)
+        {
+            _bornTick = bornTime;
+        }
+
+        public IPlainGeometryCombination(Counter<uint> timer)
+        {
+            _bornTick = timer._value;
+        }
+
+        public IPlainGeometryCombination()
+        {
+
+        }
+    }
+}