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| author | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2021-01-02 18:13:52 +0100 |
|---|---|---|
| committer | Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> | 2021-02-11 15:07:12 +0100 |
| commit | 6862ce3d7763d8163cc1350c45bc6adae8b4fc7f (patch) | |
| tree | e349a472e2736ec6ec7d724a302987f1ca5408ff /src/gui/doc/snippets/textdocument-end/textdocumentendsnippet.cpp | |
| parent | c7bcc51e2c196e5cc3def89137ca31b4a9d29157 (diff) | |
QMatrix4x4: deprecate operator*(QMatrix4x4, QVector3D/QPoint(F))
The operation does not make sense at the "fundamental" level
for these classes (algebraic, in this case), so it shouldn't exist.
It's also a semantic trap:
* it interprets a _vector_ as a _point_ instead (the vector gets
1-extended in 4D)
* after the multiplication, it gets perspective divided.
These semantics do not belong to operator*.
operator*(QVector3D/QPoint(F), QMatrix) will be tackled in a next commit;
we don't have a straightforward replacement for it.
Drive-by, document that map() interprets vectors as points.
[ChangeLog][QtGui][QMatrix4x4] operator* between a QMatrix4x4 and a
QVector3D, QPoint, or QPointF has been deprecated in favor of map()
and mapVector().
Pick-to: 6.1
Task-number: QTBUG-89708
Change-Id: Iad78d6eb68cc8cdc3ac16b1635c4d3b522c95213
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Diffstat (limited to 'src/gui/doc/snippets/textdocument-end/textdocumentendsnippet.cpp')
0 files changed, 0 insertions, 0 deletions