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daily update on 202303006 by nitload youmu

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Nitload
2023-03-07 00:59:55 +08:00
parent df2af2b2d5
commit 873c408cd4
20 changed files with 291 additions and 19 deletions
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源代码/StgSharp/Vector/Array2x2.cs
+48 -15
View File
@@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.IO.Compression;
using System.Runtime.InteropServices;
using System.Text;
@@ -60,23 +61,14 @@ namespace StgSharp.Math
}
}
public static unsafe Array2x2 operator *(Array2x2 array1, Array2x2 array2)
public override int GetHashCode()
{
float* p = &array1.row1.X;
return HashCode.Combine(row1,row2);
}
Vec2D colum1 = new Vec2D(
*p , *(p + 2)
);
Vec2D colum2 = new Vec2D(
*(p + 1), *(p + 3)
);
return new Array2x2(
colum1 * array2.row1,
colum2 * array2.row1,
colum1 * array2.row2,
colum2 * array2.row2
);
public override string ToString()
{
return $"{row1}\n{row2}";
}
public static Array2x2 operator +(Array2x2 array1, Array2x2 array2)
@@ -95,6 +87,47 @@ namespace StgSharp.Math
);
}
public static unsafe Array2x2 operator *(Array2x2 array1, Array2x2 array2)
{
float* a11 = &array1.row1.X;
float* a12 = a11++ ;
float* a21 = a12++ ;
float* a22 = a21++ ;
float* b11 = &array2.row1.X ;
float* b12 = b11++ ;
float* b21 = b12++ ;
float* b22 = b21++ ;
var s1 = *a21 + *a22;
var s2 = s1 - *a11;
var s3 = *a11 - *a21;
var s4 = *a12 - s2;
var t1 = *b12 - *b11;
var t2 = *b22 - t1;
var t3 = *b22 - *b12;
var t4 = t2 - *b21;
var m1 = *a11 * *b11;
var m2 = *a12 * *b11;
var m3 = s4 * *b22;
var m4 = *a22 * t4;
var m5 = s1 * t1;
var m6 = s2 * t2;
var m7 = s3 * t3;
var u1 = m1 + m2;
var u2 = m1 + m6;
var u3 = u2 + m7;
var u4 = u2 + m5;
var u5 = u4 + m3;
var u6 = u3 - m4;
var u7 = u3 + m5;
return new Array2x2(u1,u5,u6,u7);
}
}
}