Hi Régis, Thank you for the explanations and for funding it!
I think it is very cool, but as it is an "unusual" feature it probably needs a bit of explaining in the manual. Esp. if you combine it with the ShapeBurst fill. People need to understand that they are styling anything but the current / selected feature. Anyway - it is a powerful addition to QGIS. Andreas Am 16.06.2014 20:43, schrieb Régis Haubourg: > Hi Andreas, > I'm the funder, Hugo Mercier from Oslandia is the developper. It's the right > time to do some teasing I guess ;-). > > The inverted polygon renderer idea appeared when writing specifications for > an improved mask tool . We will soon release new version of mask plugin that > allows the following: > > - generate a ROI layer from current polygon selection, or from another > plugin's call. > > - Label features of layers only for objects intersecting the mask region > (several spatial operators inside). Users wish that a lot to do professional > mapping. Unwanted side effect is that labeling is a lot more readable by > giving more affordable space to labeling engine. > > - Automagically reuse current mask style to generate a mask on the fly on > Atlas coverage feature. > > inverted style + shapeburst give crazy cool rendering! > Another positive point, instead of making a big bbox with a hole, as current > mask plugin does, an inverted style allowed a much cleaner solution, and > sounded a lot more reusable. And now, it's much more clear for the user to > be able to zoom to the layer extent and not be zoomed out far away. > > We were unsure about real performances of such spatial filtering, so we > decided to start with a plugin, and share with you.. And, we found that > filtering labels gives less work to pal engine, so the spatial intersection > seems to be less consuming than labeling, for average layers. > > Many thanks to Oslandia Team and Hugo for the hard work. We're about to > release the plugin, Hugo will launch a thread about this, and maybe a port > to core, if you like it. > > I already see what we could do next, like label features only on the parts > really intersecting that ROI.. > > Stay tuned! > Régis > > > > -- > View this message in context: > http://osgeo-org.1560.x6.nabble.com/Question-on-inverted-polygon-renderer-tp5146099p5146162.html > Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. > _______________________________________________ > Qgis-developer mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-developer > _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
