109 lines
2.8 KiB
C#
109 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace StgSharp.Math
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{
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[StructLayout(LayoutKind.Explicit)]
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public struct Array2x3:IEquatable<Array2x3>
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{
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[FieldOffset(0)]
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public Vec3D row1;
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[FieldOffset(12)]
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public Vec3D row2;
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public Array2x3(Vec3D r1, Vec3D r2)
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{
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row1 = r1;
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row2 = r2;
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}
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public override bool Equals(object obj)
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{
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if (obj == null)
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{
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return false;
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}
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else if (obj.GetType() != typeof(Array2x3))
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{
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return false;
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}
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else
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{
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return this.Equals((Vec3D)obj);
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}
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}
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public override int GetHashCode()
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{
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return HashCode.Combine(row1, row2);
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}
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public override string ToString()
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{
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return $"{row1}\n{row2}";
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}
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bool IEquatable<Array2x3>.Equals(Array2x3 other)
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{
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if (this.GetHashCode() != other.GetHashCode())
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{
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return false;
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}
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else
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{
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return
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this.row1 == other.row1
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&& this.row2 == other.row2;
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}
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}
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public static Array2x3 operator +(Array2x3 array1, Array2x3 array2)
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{
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return new Array2x3(
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array1.row1 + array2.row1,
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array1.row2 + array2.row2
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);
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}
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public static Array2x3 operator -(Array2x3 array1, Array2x3 array2)
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{
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return new Array2x3(
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array1.row1 - array2.row1,
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array1.row2 - array2.row2
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);
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}
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public static Array2x3 operator *(Array2x3 array, float x)
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{
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return new Array2x3(
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array.row1 * x,
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array.row2 * x
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) ;
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}
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public static Array2x3 operator /(Array2x3 array, float x)
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{
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return new Array2x3(
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array.row1 / x,
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array.row2 / x
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);
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}
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public static unsafe Array2x2 operator *(Array2x3 array1, Array3x2 array2)
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{
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float* p1 = &array1.row1.X;
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float* p2 = &array2.row2.X;
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return new Array2x2(
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*(p1 + 0) * *(p2 + 0) + *(p1 + 1) * *(p2 + 2) + *(p1 + 2) * *(p2 + 4),
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*(p1 + 0) * *(p2 + 1) + *(p1 + 1) * *(p2 + 3) + *(p1 + 2) * *(p2 + 5),
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*(p1 + 3) * *(p2 + 0) + *(p1 + 4) * *(p2 + 2) + *(p1 + 5) * *(p2 + 4),
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*(p1 + 3) * *(p2 + 1) + *(p1 + 4) * *(p2 + 3) + *(p1 + 5) * *(p2 + 5)
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);
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}
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}
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}
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