86 lines
2.3 KiB
C#
86 lines
2.3 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 Array3x2:IEquatable<Array3x2>
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{
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[FieldOffset(0)]
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public Vec2D row1;
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[FieldOffset(8)]
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public Vec2D row2;
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[FieldOffset(16)]
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public Vec2D row3;
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public Array3x2(Vec2D r1,Vec2D r2,Vec2D r3)
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{
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row1= r1;
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row2= r2;
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row3= r3;
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}
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bool IEquatable<Array3x2>.Equals(Array3x2 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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&& this.row3 == other.row3
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;
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}
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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(Array3x2))
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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((Array3x2)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, row3);
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}
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public override string ToString()
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{
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return $"{row1}\n{row2}\n{row3}";
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}
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public static unsafe Array3x3 operator *(Array3x2 array1, Array2x3 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 Array3x3(
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*(p1 + 0) * *(p2 + 0) + *(p1 + 1) * *(p2 + 3),
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*(p1 + 0) * *(p2 + 1) + *(p1 + 1) * *(p2 + 4),
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*(p1 + 0) * *(p2 + 2) + *(p1 + 1) * *(p2 + 5),
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*(p1 + 2) * *(p2 + 0) + *(p1 + 3) * *(p2 + 3),
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*(p1 + 2) * *(p2 + 1) + *(p1 + 3) * *(p2 + 4),
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*(p1 + 2) * *(p2 + 2) + *(p1 + 3) * *(p2 + 5),
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*(p1 + 4) * *(p2 + 0) + *(p1 + 5) * *(p2 + 3),
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*(p1 + 4) * *(p2 + 1) + *(p1 + 5) * *(p2 + 4),
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*(p1 + 4) * *(p2 + 2) + *(p1 + 5) * *(p2 + 5)
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);
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}
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}
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}
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