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Fixed some issue with scalar multiplications (explicit) and continued with UNIT tests

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This commit is contained in:
Klaus Basan
2013-04-21 01:13:23 +02:00
parent f4affe55ef
commit bd53371de4
16 changed files with 255 additions and 91 deletions
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23
src/blackmisc/mathmatrix3x3.cpp
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@@ -13,9 +13,9 @@ namespace Math
/*
* Determinant
*/
qreal CMatrix3x3::determinant() const
double CMatrix3x3::determinant() const
{
qreal determinant =
double determinant =
this->m_matrix(0, 0) * this->m_matrix(1, 1) * this->m_matrix(2, 2) +
this->m_matrix(0, 1) * this->m_matrix(1, 2) * this->m_matrix(2, 0) +
this->m_matrix(0, 2) * this->m_matrix(1, 0) * this->m_matrix(2, 1) -
@@ -27,17 +27,19 @@ qreal CMatrix3x3::determinant() const
}
/*
* Determinant
* Inverse
*/
CMatrix3x3 CMatrix3x3::inverse() const
CMatrix3x3 CMatrix3x3::inverse(bool &invertible) const
{
CMatrix3x3 inverse;
qreal det = determinant();
// should we throw an assert / error here?
if (det == 0) return inverse;
qreal invdet = 1.0 / det;
double det;
if (this->allValuesEqual() || (det = determinant()) == 0)
{
invertible = false;
inverse.setZero();
return inverse;
}
double invdet = 1.0 / det;
inverse.m_matrix(0, 0) = (this->m_matrix(1, 1) * this->m_matrix(2, 2) - this->m_matrix(1, 2) * this->m_matrix(2, 1)) * invdet;
inverse.m_matrix(0, 1) = (- this->m_matrix(0, 1) * this->m_matrix(2, 2) + this->m_matrix(0, 2) * this->m_matrix(2, 1)) * invdet;
@@ -49,6 +51,7 @@ CMatrix3x3 CMatrix3x3::inverse() const
inverse.m_matrix(2, 1) = (- this->m_matrix(0, 0) * this->m_matrix(2, 1) + this->m_matrix(0, 1) * this->m_matrix(2, 0)) * invdet;
inverse.m_matrix(2, 2) = (this->m_matrix(0, 0) * this->m_matrix(1, 1) - this->m_matrix(0, 1) * this->m_matrix(1, 0)) * invdet;
invertible = true;
return inverse;
}