Method getInverse

src/mathematics/Matrix2x2.cpp:32–43

Return the inverse matrix

// Return the inverse matrix
Matrix2x2 Matrix2x2::getInverse(decimal determinant) const {

    // Check if the determinant is equal to zero
    assert(std::abs(determinant) > MACHINE_EPSILON);

    decimal invDeterminant = decimal(1.0) / determinant;

    Matrix2x2 tempMatrix(mRows[1][1], -mRows[0][1], -mRows[1][0], mRows[0][0]);

    // Return the inverse matrix
    return (invDeterminant * tempMatrix);
}