daily update on 20231016 by nitload youmu, vao,vbo,ebo struct added

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

@@ -0,0 +1,46 @@
+using StgSharp.Math;
+
+namespace StgSharp.Geometries
+{
+
+    /// <summary>
+    /// 平面几何体。包含三角形，对称四边形，自由多边形等。最多可由16个点参数定义。
+    /// </summary>
+    public abstract class PlainGeometry
+    {
+        protected readonly uint bornTick;
+        internal readonly Point refOrigin;
+
+        public Point RefOrigin { get { return refOrigin; } }
+
+        public abstract Point RefPoint0 { get; }
+        public abstract Point RefPoint1 { get; }
+        public abstract Point RefPoint2 { get; }
+
+        public uint BornTime => bornTick;
+
+        internal abstract int[] Indices { get; }
+
+        public PlainGeometry(uint bornTime)
+        {
+            bornTick = bornTime;
+        }
+
+        public PlainGeometry(Counter<uint> MainTimer)
+        {
+            bornTick = MainTimer.Value;
+        }
+
+        public PlainGeometry() { }
+
+
+        internal abstract void OnRender(uint tick);
+
+        public abstract Line[] GetAllSides();
+
+        public abstract Plain GetPlain();
+
+    }
+
+
+}