On Thursday 20 July 2006 10:04, [EMAIL PROTECTED] wrote: > Hi, > I tried Udig. It is good, but the repaint of the map is very slow. > I would like to know, if this problem is caused that Java is used, or bad > algorithm and if this problem will be solved. I noticed that all map is > repainted. > But I tried for example software Map Window GIS (http://www.mapwindow.org) > and this software paints only a missing part of map, when I use function > pan for moving map.(This software is not written in Java.)
I don't know MapWindow, so if you perceive a tiled rendering on it I might be just wrong, but this sounds to me like just a matter of "preceived performance" rather than effective performance, and its certainly something we could improve in uDig. what I mean is that, from my experience, a panning interaction benefits from not presenting any flickering on the image drawn while rebuilding the whole map image in the background. Instead, uDig displays a blank image when you release the moue on a panning action, and this leads to a "feeling" of slowness, while when this doesn't happens, the user gets the "feeling" of greater responsivenes. But as said, I could just be wrong. 2c. Gabriel > > Thank you for your answer. > _______________________________________________ > User-friendly Desktop Internet GIS (uDig) > http://udig.refractions.net > http://lists.refractions.net/mailman/listinfo/udig-devel -- Gabriel Roldán ([EMAIL PROTECTED]) Axios Engineering (http://www.axios.es) Tel. +34 944 41 63 84 Fax. +34 944 41 64 90 _______________________________________________ User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net http://lists.refractions.net/mailman/listinfo/udig-devel
