[Qgis-developer] Map rotation landed in master

Pirmin Kalberer pi_ml at sourcepole.com
Fri Dec 12 02:30:36 PST 2014

Hi Sandro,

Am Sonntag, 7. Dezember 2014, 17.05:55 schrieb Sandro Santilli:
> This mail to notify that the core map rotation support is now in master.

Great addition!

> Not all parts of QGIS play nicely with rotation yet, but hopefully
> this will be a good basis to continue development toward full support.
> In particular, label placement is not fully rotation aware.
> Horizontal labels are still horizontal, no matter map rotation, but
> "parallel" ones are parallel to the original (not rotated) lines instead.
> Placement of labels is also weird when rotation is present.
> Also grid and north arrow are not respecting rotation, and the zoom-by-rect
> rubberband (the zoom window) looks funny when the map is rotated.

How should PluginLayers handle map rotation? The OpenLayers plugin won't 
rotate Google Maps layers, because it's against Google's TOS. Will you 
automatically disable map rotation in presence of a PluginLayer or will there 
be a API method to disable it?
Will digitizing plugins ([1], [2]) still work with rotated maps? 
Or is there an architecture document (or a QEP) to understand the consequences 
for plugins and other parts of QGIS (e.g. globe)?


[1] http://plugins.qgis.org/plugins/tags/digitizing/
[2] http://plugins.qgis.org/plugins/tags/cad/

Pirmin Kalberer
Sourcepole  -  Linux & Open Source Solutions

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