Table of Contents

Struct Matrix2X2

Namespace
Alis.Core.Aspect.Math.Matrix
Assembly
Alis.dll

A 2-by-2 matrix. Stored in column-major order.

public struct Matrix2X2

Inherited Members

Constructors

Matrix2X2(float, float, float, float)

Construct this matrix using scalars.

public Matrix2X2(float a11, float a12, float a21, float a22)

Parameters

a11 float
a12 float
a21 float
a22 float

Matrix2X2(float)

Construct this matrix using an angle. This matrix becomes an orthonormal rotation matrix.

public Matrix2X2(float angle)

Parameters

angle float

Properties

Ex

The col

public Vector2 Ex { readonly get; set; }

Property Value

Vector2

Ey

The col

public Vector2 Ey { readonly get; set; }

Property Value

Vector2

Inverse

Gets the value of the inverse

public Matrix2X2 Inverse { get; }

Property Value

Matrix2X2

Methods

GetAngle()

Extract the angle from this matrix (assumed to be a rotation matrix).

public float GetAngle()

Returns

float

GetInverse()

Compute the inverse of this matrix, such that inv(A) * A = identity.

public Matrix2X2 GetInverse()

Returns

Matrix2X2

Set(Vector2, Vector2)

Initialize this matrix using columns.

public void Set(Vector2 c1, Vector2 c2)

Parameters

c1 Vector2
c2 Vector2

SetIdentity()

Set this to the identity matrix.

public void SetIdentity()

SetZero()

Set this matrix to all zeros.

public void SetZero()

Solve(Vector2)

Solve A * x = b, where b is a column vector. This is more efficient than computing the inverse in one-shot cases.

public Vector2 Solve(Vector2 b)

Parameters

b Vector2

Returns

Vector2

Operators

operator +(Matrix2X2, Matrix2X2) 

public static Matrix2X2 operator +(Matrix2X2 a, Matrix2X2 b)

Parameters

a Matrix2X2
b Matrix2X2

Returns

Matrix2X2