switch root namespace name to NITLOAD

2026-09-02 18:15:03 +08:00
parent 4218baad48
commit 7c7101ee48
502 changed files with 710 additions and 721 deletions
@@ -0,0 +1,74 @@
+// -----------------------------------------------------------------------------
+// file="Plain"
+// Project: StgSharp
+// Copyright (c) Nitload.
+// SPDX-License-Identifier: MIT
+// -----------------------------------------------------------------------------
+
+using Nitload.Mathematics;
+using Nitload.Mathematics.Numeric.Graphics;
+
+using System.Numerics;
+
+namespace Nitload.Geometries
+{
+    public unsafe class Plain
+    {
+
+        internal readonly float d = -1;
+        internal Vec3 _origin;
+
+        internal Vec3 plainParameter;
+        internal Vec3 vec1;
+        internal Vec3 vec2;
+
+        public Plain(
+               Vec3 o,
+               Vec3 v1,
+               Vec3 v2
+        )
+        {
+            this._origin = o;
+            this.vec1 = v1 - (v2 * (v1.Y / v2.Y));   //xz
+            this.vec2 = v2 - (vec1 * (v2.X / v1.X)); //yz
+
+            // |_origin|-k1*|vec1|-k2*|vec2| --> plainParameter.Z；
+            plainParameter.Z = _origin.Z - (vec1.Z * (_origin.X / vec1.X)) - (vec2.Z * (_origin.Y / vec2.Y));
+
+            // plainParameter.Z -> plainParameter.X, plainParameter.Y
+            plainParameter.X = vec1.X * (vec1.Z / plainParameter.Z);
+            plainParameter.Y = vec2.Y * (vec2.Z / plainParameter.Z);
+
+            plainParameter.X = 1 / plainParameter.X;
+            plainParameter.Y = 1 / plainParameter.Y;
+            plainParameter.Z = 1 / plainParameter.Z;
+        }
+
+        public Plain(
+               Point p1,
+               Point p2,
+               Point p3
+        )
+        {
+            Vec3 origin = p1.Coord;
+            Vec3 v1 = p2.Coord - origin;
+            Vec3 v2 = p3.Coord - origin;
+
+
+            vec1 = v1 - (v2 * (v1.Y / v2.Y));   //xz
+            vec2 = v2 - (vec1 * (v2.X / v1.X)); //yz
+
+            // |_origin|-k1*|vec1|-k2*|vec2| --> plainParameter.Z；
+            plainParameter.Z = origin.Z - (vec1.Z * (origin.X / vec1.X)) - (vec2.Z * (origin.Y / vec2.Y));
+
+            // plainParameter.Z --> plainParameter.X, plainParameter.Y
+            plainParameter.X = vec1.X * (vec1.Z / plainParameter.Z);
+            plainParameter.Y = vec2.Y * (vec2.Z / plainParameter.Z);
+
+            plainParameter.X = 1 / plainParameter.X;
+            plainParameter.Y = 1 / plainParameter.Y;
+            plainParameter.Z = 1 / plainParameter.Z;
+        }
+
+    }
+}