Hi Martin, Le 16/04/2014 11:34, Martin Dobias a écrit : > Hi Hugo > > On Tue, Apr 15, 2014 at 3:07 PM, Hugo Mercier <[email protected]> > wrote: >> >> The UI asks for numeric levels, but, if I am correct, only relative >> orders between two symbol layers are important. >> Was there something else originally planned ? Something like a global >> level to be able to order symbol layers of different vector layers ? > > No, it was meant just for levels within one layer.
Ok, so ... why the UI asks the user for integers ? And what is the meaning of two layers with the same number ? What about a UI with the list of symbol layers and some up/down buttons ? > > >> Another point : apart from performance issue, I cannot see any reason >> why *not* to enable symbol levels. Are there situations were users do >> want different symbol layers to overlap ? > > I think there are such situations, from the top of my head: > - with symbol levels you cannot see the rendering progress (everything > is rendered at the end) - this makes quite a difference with big > layers If I am correct, you can still see the progress. You will see the first symbol layer, then the second one, etc. > - you don't always want the symbol layers to be blended (different appearance) Now that Nyall gives an example of such rendering, that is clear. > - not all renderers need to support symbol levels > > I don't think we should go with symbol levels always on. > > Regards > Martin > > -- Hugo Mercier Oslandia _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
