On 9/7/2012 12:07 PM, Tom Hayward wrote:
Why is Xastir slow to render raster maps?
Because it's doing a LOT of processing.
I'm curious what is actually happening behind the scenes. It appears that Xastir is re-projecting the raster maps, requiring an expensive render.
From what I've seen in browsing the source code a while back, that seems to be the case.
Why not just re-project the APRS stations and any shapefile overlay to match the raster tiles?
Because people want to zoom to any scale they want and not be restricted to what the tile set might offer natively. At least, that's the criticism/request I get every now and then from APRSISCE/32 users which constrains them to native tile zoom levels.
Wouldn't this be much faster?
Yes, and that's why I don't scale the bitmaps, but I'm glad alternative platforms offer features in areas where I don't plan to go.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32 _______________________________________________ Xastir mailing list [email protected] http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
