/// <summary>
/// Inverts a given by-reference <see cref="Matrix2"/>.
/// </summary>
/// <param name="matrix">The matrix.</param>
public static void Invert(ref Matrix2 matrix)
{
// Calculate determinant over one
float det = 1 / ((matrix.Row0.X * matrix.Row1.Y) - (matrix.Row0.Y * matrix.Row1.X));
float tmpd = matrix.Row1.Y;
// Swap d and a
matrix.Row1.Y = matrix.Row0.X;
matrix.Row0.X = tmpd;
// Negate b and c
matrix.Row0.Y = -matrix.Row0.Y;
matrix.Row1.X = -matrix.Row1.X;
// And multiply by the determinant modifier
matrix.Row0.X *= det;
matrix.Row0.Y *= det;
matrix.Row1.X *= det;
matrix.Row1.Y *= det;
}
public static extern Matrix2 InvertMatrixByValue(Matrix2 matrix);
public static extern void InvertMatrixByPtr(ref Matrix2 matrix);
/// <summary>
/// Inverts a given by-value <see cref="Matrix2"/>.
/// </summary>
/// <param name="matrix">The matrix.</param>
/// <returns>The inverted matrix.</returns>
public static Matrix2 Invert(Matrix2 matrix)
{
Invert(ref matrix);
return(matrix);
}
/// <summary>
/// Determines componentwise equality for the current and another matrix.
/// </summary>
/// <param name="other">The other matrix.</param>
/// <returns>true if the matrices are equal, otherwise, false.</returns>
public bool Equals(Matrix2 other)
{
return(this.Row0.Equals(other.Row0) && this.Row1.Equals(other.Row1));
}
