/// <summary>
/// Calculates the inverse matrix.
/// </summary>
/// <returns>Inverse Matrix3f.</returns>
public Matrix3f Inverse()
{
float det = this.Determinant();
var resultado = new Matrix3f();
if (det == 0)
{
throw (new ArithmeticException("The matrix is not invertible"));
}
det = 1 / det;
resultado.M11 = det * (this.mM22 * this.mM33 - this.mM23 * this.mM32);
resultado.M12 = det * (this.mM13 * this.mM32 - this.mM12 * this.mM33);
resultado.M13 = det * (this.mM12 * this.mM23 - this.mM13 * this.mM22);
resultado.M21 = det * (this.mM23 * this.mM31 - this.mM21 * this.mM33);
resultado.M22 = det * (this.mM11 * this.mM33 - this.mM13 * this.mM31);
resultado.M23 = det * (this.mM13 * this.mM21 - this.mM11 * this.mM23);
resultado.M31 = det * (this.mM21 * this.mM32 - this.mM22 * this.mM31);
resultado.M32 = det * (this.mM12 * this.mM31 - this.mM11 * this.mM32);
resultado.M33 = det * (this.mM11 * this.mM22 - this.mM12 * this.mM21);
return(resultado);
}
/// <summary>
/// Calculates the inverse matrix.
/// </summary>
/// <returns>Inverse Matrix3f.</returns>
public Matrix3f Inverse()
{
float det = this.Determinant();
var resultado = new Matrix3f();
if (det == 0)
{
throw (new ArithmeticException("The matrix is not invertible"));
}
det = 1/det;
resultado.M11 = det*(this.mM22*this.mM33 - this.mM23*this.mM32);
resultado.M12 = det*(this.mM13*this.mM32 - this.mM12*this.mM33);
resultado.M13 = det*(this.mM12*this.mM23 - this.mM13*this.mM22);
resultado.M21 = det*(this.mM23*this.mM31 - this.mM21*this.mM33);
resultado.M22 = det*(this.mM11*this.mM33 - this.mM13*this.mM31);
resultado.M23 = det*(this.mM13*this.mM21 - this.mM11*this.mM23);
resultado.M31 = det*(this.mM21*this.mM32 - this.mM22*this.mM31);
resultado.M32 = det*(this.mM12*this.mM31 - this.mM11*this.mM32);
resultado.M33 = det*(this.mM11*this.mM22 - this.mM12*this.mM21);
return resultado;
}
