2013/10/23 A Huarte <[email protected]> > My simplification algorithm is a new method that uses the MapToPixel data > of current QgsRenderContext to ignore in the drawing of geometry the > "equal-pixel device points". It has no effect if the geometry is not far > of current point of view of map. > > It does not uses the ST_Simplify() method (douglas-peucker algorithm) > where the geometry is simplified for other "similar" geometry. >
Oh, I see. So it's "transparent" to the user, he doesn't notice the simplification, right? > > > ------------------------------ > *De:* G. Allegri <[email protected]> > *Para:* A Huarte <[email protected]> > *CC:* qgis-developer <[email protected]> > *Enviado:* Miércoles 23 de octubre de 2013 8:46 > *Asunto:* Re: [Qgis-developer] vector rendering improvement patch > > > > Ok Andreas, I'm going to make it configurable, will present a new option > in the main properties form of the layer > I suppose he meant to do not draw simplidied geometries during editing > because it would obviously lead to produce unconsistent edits. > giovanni > > > > About of simplification in "editmode". I think is not necessary disable > it, the simplification runs only on the method of painting > "QgsVectorLayer::draw", not when you retrieve a geometry to treat your > information. > > > > Alvaro > > > >> ________________________________ > >> De: Andreas Neumann <[email protected]> > >> Para: [email protected] > >> Enviado: Martes 22 de octubre de 2013 14:03 > >> Asunto: Re: [Qgis-developer] vector rendering improvement patch > >> > >> Hi, > >> > >> Thank you for your work! > >> > >> Yes - I think it should be configurable. It should also automatically be > >> turned off if a layer is in edit mode. > >> > >> Just my opinion, > >> Andreas > >> > >> Am 22.10.2013 14:01, schrieb A Huarte: > >> > Hello Vincent! > >> > For now, it is not configurable, automatically applies to all vector > layer to be painted. > >> > > >> > I think that the userneed not configure this, of course, if > dev-community suggests, will be as you say! :-) > >> > > >> > > >> >> Is it configurable in the interface for each layer independantly ? > >It should probably be, as according to the style applied to the > geometries, >the simplification could be something we want for some layers > and not for >others. >A checkbox in the layer properties dialog could be > interesting. >Then we would have to decide if we want it activated by > default or not for >dataproviders supporting it. We could have a global > option for that default >too. >Vincent > >> >> > >> >> > >> >> _______________________________________________ > >> >> 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 > >> > >> > > > > _______________________________________________ > > Qgis-developer mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-developer > > > -- Giovanni Allegri http://about.me/giovanniallegri blog: http://blog.spaziogis.it GEO+ geomatica in Italia http://bit.ly/GEOplus
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