Daily update 2 on 20240228 by nitload youmu

2025-03-01 04:58:46 +08:00
parent 90d5f76511
commit f22862dfc4
983 changed files with 180004 additions and 0 deletions
@@ -0,0 +1,133 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="Vec2.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace StgSharp.Math
+{
+    /// <summary>
+    /// A two dimension vector defined by two elements. Vec2Ds in StgSharp are default used as colum
+    /// vector.
+    /// </summary>
+    [StructLayout( LayoutKind.Explicit, Size = 16, Pack = 16 )]
+    public struct Vec2 : IVector
+    {
+
+        [FieldOffset( 0 )] internal unsafe fixed float num[ 2 ];
+
+        [FieldOffset( 0 )]
+        internal Vector2 v;
+
+        [FieldOffset( 0 )]
+        internal Vector4 vec;
+
+        [FieldOffset( 0 )]
+        public float X;
+        [FieldOffset( 4 )]
+        public float Y;
+
+        internal Vec2( Vector2 vec )
+        {
+            v = vec;
+        }
+
+        internal Vec2( Vector4 vec )
+        {
+            this.vec = vec;
+        }
+
+        public Vec2( float x, float y )
+        {
+            v = new Vector2( x, y );
+        }
+
+        public static Vec2 Unit => new Vec2( 1, 1 );
+
+        public static Vec2 Zero => new Vec2( 0, 0 );
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public float Cross( Vec2 right )
+        {
+            return ( X * right.Y ) - ( Y * right.X );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public float Dot( Vec2 vec )
+        {
+            return Vector2.Dot( v, vec.v );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static Vec2 operator -( Vec2 left, Vec2 right )
+        {
+            return new Vec2( left.v - right.v );
+        }
+
+        public static bool operator !=( Vec2 left, Vec2 right )
+        {
+            return !( left == right );
+        }
+
+        public static Vec2 operator *( Vec2 vec, float value )
+        {
+            return new Vec2( vec.v * value );
+        }
+        public static Vec2 operator *( float value, Vec2 vec )
+        {
+            return new Vec2( vec.v * value );
+        }
+
+        public static Vec2 operator /( Vec2 vec, float value )
+        {
+            return new Vec2( vec.v / value );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static Vec2 operator +( Vec2 left, Vec2 right )
+        {
+            return new Vec2( left.v + right.v );
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static bool operator ==( Vec2 left, Vec2 right )
+        {
+            return left.v == right.v;
+        }
+
+        [MethodImpl( MethodImplOptions.AggressiveInlining )]
+        public static implicit operator Vec2( (float, float) tuple )
+        {
+            return new Vec2( tuple.Item1, tuple.Item2 );
+        }
+
+    }
+}