daily update on 20230529 by nitload youmu

源代码/StgSharp/Geometries/PlainGeometry/Point.cs

@@ -13,18 +13,31 @@ namespace StgSharp.Geometries
     public unsafe class Point :  INode<Point>, INullable
     {
         internal vec3d* positionPtr;
+        internal readonly bool isVertex;
 
         internal Point(vec3d* ptr)
         {
             positionPtr = ptr;
         }
 
+        public Point()
+        {
+            IntPtr ptr = Marshal.AllocHGlobal(sizeof(vec3d));
+            positionPtr = (vec3d*)ptr.ToPointer();
+        }
+
         public vec3d Position
         {
             get { return *positionPtr; }
             set { *positionPtr = value; }
         }
 
+        public vec3d* PositionPtr
+        {
+            get { return positionPtr; }
+            set { positionPtr = value; }
+        }
+
         public float X
         {
             get { return (*this.positionPtr).X; }
@@ -43,7 +56,6 @@ namespace StgSharp.Geometries
             set { (*this.positionPtr).Z = value; }
         }
 
-        internal readonly bool isVertex;
 
         public bool IsVertex => isVertex;