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

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+using StgSharp;
+using StgSharp.Math;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Security.Cryptography;
+using System.Text;
+
+
+namespace StgSharp.Geometries
+{
+    public class Point : INode<Point>
+    {
+
+        internal vec3d _position;
+
+        public float X
+        {
+            get { return this._position.X; }
+        }
+
+        public float Y
+        {
+            get { return this._position.Y; }
+        }
+
+        internal readonly bool isVertex;
+
+        public bool IsVertex => isVertex;
+
+        /// <summary>
+        /// 刷新点的位置，即移动点。当该点是某个几何体的从动点时
+        /// （即点坐标由几何体其他点约束或点参数已经在创建几何体时定义）
+        /// 请不要再次进行定义，程序将自行忽略此处的代码。
+        /// </summary>
+        /// <param name="tick">当前游戏刻</param>
+        public virtual void Update(uint tick) {}
+
+        public bool IsInGeometry(IPlainGeometry geo)
+        {
+            throw new NotImplementedException();
+        }
+
+        public bool IsOnPlain(IPlainGeometry geo)
+        {
+            return this._position * geo.GetPlain().plainParameter == 1;
+        }
+
+    }
+}