OK Thank you! Yes, I also thought a new ViewportEffect is too much for this, it would only have been able to crop out a part of the cylindrical map, losing resolution. I will see what I can do when I have solved the videoplayer issues.
Kind regards, Georg On Sa, 27.06.2015, 12:22, Fabien Chéreau wrote: > Hi Georg, > > You shouldn't use StelViewportEffect for that, as it only modifies the > already-projected image. You rather need to offset the viewport, by > changing the value of the viewportCenter member of the StelProjectorParams > struct. > There is no method for doing that but you can create one based on void > StelApp::setDevicePixelsPerPixel(float dppp) > > Fabien > > On Fri, Jun 26, 2015 at 12:03 AM, Georg Zotti <georg.zo...@univie.ac.at> > wrote: > >> Hello! >> >> I would like to have a cylindrical projection along the horizon which >> does >> not require that the horizon (if you want it straight) is in the >> vertical >> center of the screen, but lower, so that more sky is visible while still >> having some of the ground visible, altitude range e.g. -5...20 degrees, >> just with a straight horizon. I think several projections could benefit >> from this. >> >> This would require some offsetting of the viewport center. There is a >> class StelViewportEffect, would I have to subclass that, or make a >> variant >> of CylindricalProjection, or is this even available already? There are >> some traces of config.ini entries which hint at this functionality >> having >> been available already in earlier versions. >> >> >> >> Thanks for any insight, or even help, on this! >> >> Kind regards, >> Georg >> >> >> >> ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ Stellarium-pubdevel mailing list Stellarium-pubdevel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/stellarium-pubdevel
