daily update on 20230927 by nitload youmu, all polygon4 display available, optimizing on C/C# interoperation

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

@@ -1,4 +1,5 @@
 using StgSharp.Math;
+using System.Numerics;
 
 namespace StgSharp.Geometries
 {
@@ -11,6 +12,14 @@ namespace StgSharp.Geometries
         internal Vec3d plainParameter;
         internal readonly float d = -1;
 
+        internal Plain(Vector4 origin, Vector4 p1, Vector4 p2)
+        {
+            this.origin = new Vec3d(origin);
+
+            vec1 = new Vec3d(p1 - origin);
+            vec2 = new Vec3d(p2 - origin);
+        }
+
         public Plain(Vec3d o, Vec3d v1, Vec3d v2)
         {
             this.origin = o;