Hi Nyall The code is on github ..
https://github.com/ccrook/QGIS-VectorFieldRenderer-Plugin/tree/qgis3_wip I've documented this in issue 8 at: https://github.com/ccrook/QGIS-VectorFieldRenderer-Plugin/issues/8 Any thoughts would be greatly appreciated :-) Chris ________________________________________ From: Nyall Dawson [nyall.daw...@gmail.com] Sent: 08 February 2018 10:53 To: Chris Crook Cc: qgis-developer@lists.osgeo.org Subject: Re: [QGIS-Developer] QGIS3: Python QgsFeatureRenderer subclass problem On 8 February 2018 at 05:44, Chris Crook <ccr...@linz.govt.nz> wrote: > I am converting a python plugin the implements a subclass of > QgsFeatureRenderer. At the moment the plugin is dying on the startRender > function with the message (from the base class) > > "ASSERT failure in QgsFeatureRenderer::renderFeature: \"renderFeature called > in a different thread - use a cloned renderer instead\" > > I can't see where I should be creating the cloned renderer for the rendering. > I had a look at the QgsSingleSymbolRenderer C++ code and I can't see > anything there, so I'm wondering if the python implementation in some way > corrupts the multiprocessing implementation. Can anyone offer any suggestions > Interesting - is your code public anywhere? I'll take a look. Nyall ________________________________ This message contains information, which may be in confidence and may be subject to legal privilege. If you are not the intended recipient, you must not peruse, use, disseminate, distribute or copy this message. If you have received this message in error, please notify us immediately (Phone 0800 665 463 or i...@linz.govt.nz) and destroy the original message. LINZ accepts no responsibility for changes to this email, or for any attachments, after its transmission from LINZ. Thank You. _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
