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They document intent more clearly (and replace *two* local hand-rolled
versions of each). Also kill an extraneous #include of <math.h>; and
switch to qmath.h as source for M_PI, replacing the M_PID value (and
friends) previously provided by (thankfully private)
qlocationutils_p.h (at more precision than even long double would
retain - qmath.h's M_PI is entirely sufficient even for long double,
as is the Linux <math.h> one).
Task-number: QTBUG-58083
Change-Id: I6fa4abd3c8ed9c826998f2cdc2aefc51681c19c1
Reviewed-by: Paolo Angelelli <paolo.angelelli@qt.io>
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This patch adds proper rotation/tilting support to Map Items.
To do so, clipping is now performed in wrapped mercator space
instead of screen space.
This prevents projection of geo coordinates that ended behind
the camera, and that would be projected incorrectly by the
projection transformation.
This patch therefore does not use the screen clipping code
any longer (clipPathToRect), since the geometry has already
been clipped.
The downside is that updateSourcePoints is now necessary for
any viewport change.
This would be necessary anyway in presence of tilt or rotation.
NB: Handling of MapQuickItems with zoomLevel set is still TODO.
Future work:
1) Optimize updateSourcePoints by pre-computing the mercator
projection of the geometry, and let updateSourcePoints do only
the wrapping/clipping/projection-to-screen operations.
2) Remove updateScreenPoints altogether
Change-Id: Ie0d3dbef68d48ac97a596d40240d0ac126c0efaf
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
Reviewed-by: Paolo Angelelli <paolo.angelelli@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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QGeoProjection is currently a class containing only static methods for
WebMercator conversion/interpolation.
This patch renames it to QWebMercator, effectively freeing the
QGeoProjection name for a real projection class
Change-Id: I15b71d04f7d1d21a1d26f46687ed33aa277f6deb
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
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