fix: Cleans up Point checks and removes statics (#966)

- [X] Removes static freezing/unfreezing. Use other tools for this.
- [X] Cleans up IPoint3D allocations
- [X] Removes IPoint3D constructors since the compiler may not optimize the constructor path and allow allocations.


Note: Instead of `new Point3D(m)`, do something like `new Point3D(m.Location)`. Sorry for the inconvenience. In the long run this will prevent abuse of hot paths that will cause performance issues.

Projects/Server/Geometry/Point2D.cs

@@ -47,7 +47,7 @@ namespace Server
             m_Y = y;
         }
 
-        public Point2D(IPoint2D p) : this(p.X, p.Y)
+        public Point2D(Point2D p) : this(p.X, p.Y)
         {
         }
 

Projects/Server/Geometry/Point3D.cs

@@ -14,6 +14,7 @@
  *************************************************************************/
 
 using System;
+using System.Runtime.CompilerServices;
 
 namespace Server
 {
@@ -49,11 +50,16 @@ namespace Server
             set => m_Z = value;
         }
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public Point3D(IPoint3D p) : this(p.X, p.Y, p.Z)
         {
         }
 
-        public Point3D(IPoint2D p, int z) : this(p.X, p.Y, z)
+        public Point3D(Point3D p) : this(p.X, p.Y, p.Z)
+        {
+        }
+
+        public Point3D(Point2D p, int z) : this(p.X, p.Y, z)
         {
         }