diff options
| author | Konstantin Ritt <ritt.ks@gmail.com> | 2015-01-26 11:37:45 +0400 |
|---|---|---|
| committer | Sean Harmer <sean.harmer@kdab.com> | 2015-01-28 12:37:52 +0000 |
| commit | 6ef40175e50599a9c19d25cd1e2d3a658a61b494 (patch) | |
| tree | 175a01ba84fa9cfec5051ac37c640ddfeb16ed92 /src/gui/math3d/qmatrix4x4.cpp | |
| parent | 14419b0a2b63c774e11dec10967495b19540bbb3 (diff) | |
Introduce QMatrix4x4::isAffine()
- a convenience method thats checks if the matrix
has no projective coefficients.
Change-Id: Ieea8ac2e4237b471a683ad5010672b1e89a0c953
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Diffstat (limited to 'src/gui/math3d/qmatrix4x4.cpp')
| -rw-r--r-- | src/gui/math3d/qmatrix4x4.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/gui/math3d/qmatrix4x4.cpp b/src/gui/math3d/qmatrix4x4.cpp index c8a036918c..2fa31b5b14 100644 --- a/src/gui/math3d/qmatrix4x4.cpp +++ b/src/gui/math3d/qmatrix4x4.cpp @@ -290,6 +290,18 @@ QMatrix4x4::QMatrix4x4(const QTransform& transform) */ /*! + \fn bool QMatrix4x4::isAffine() const + \since 5.5 + + Returns \c true if this matrix is affine matrix; false otherwise. + + An affine matrix is a 4x4 matrix with row 3 equal to (0, 0, 0, 1), + e.g. no projective coefficients. + + \sa isIdentity() +*/ + +/*! \fn bool QMatrix4x4::isIdentity() const Returns \c true if this matrix is the identity; false otherwise. |