/// <summary> Add two matricies
///
/// </summary>
/// <param name="A">The first matrix
/// </param>
/// <param name="B">The second matrix
/// </param>
/// <returns> A newly created matrix containing the result
/// </returns>
public static Matrix2f Add(Matrix2f A, Matrix2f B)
{
Vector2f temp1 = new Vector2f(A.col1);
temp1.Add(B.col1);
Vector2f temp2 = new Vector2f(A.col2);
temp2.Add(B.col2);
return new Matrix2f(temp1, temp2);
}
/// <summary> Transpose the Invert
///
/// </summary>
/// <returns> A newly created matrix containing the Invert of this matrix
/// </returns>
public virtual Matrix2f Invert()
{
float a = col1.x, b = col2.x, c = col1.y, d = col2.y;
Matrix2f B = new Matrix2f();
float det = a * d - b * c;
if (det == 0.0f)
{
throw new System.SystemException("Matrix2f: Invert() - determinate is zero!");
}
det = 1.0f / det;
B.col1.x = det * d; B.col2.x = (- det) * b;
B.col1.y = (- det) * c; B.col2.y = det * a;
return B;
}
/// <summary> Multiple two matricies
///
/// </summary>
/// <param name="A">The first matrix
/// </param>
/// <param name="B">The second matrix
/// </param>
/// <returns> A newly created matrix containing the result
/// </returns>
public static Matrix2f Mul(Matrix2f A, Matrix2f B)
{
return new Matrix2f(Mul(A, B.col1), Mul(A, B.col2));
}
/// <summary> Create the absolute version of a matrix
///
/// </summary>
/// <param name="A">The matrix to make absolute
/// </param>
/// <returns> A newly created absolute matrix
/// </returns>
public static Matrix2f Abs(Matrix2f A)
{
return new Matrix2f(Abs(A.col1), Abs(A.col2));
}
/// <summary> Multiply a matrix by a vector
///
/// </summary>
/// <param name="A">The matrix to be multiplied
/// </param>
/// <param name="v">The vector to multiple by
/// </param>
/// <returns> A newly created vector containing the resultant vector
/// </returns>
public static Vector2f Mul(Matrix2f A, ROVector2f v)
{
return new Vector2f(A.col1.x * v.X + A.col2.x * v.Y, A.col1.y * v.X + A.col2.y * v.Y);
}
