Dear Fabien, thank you for these hints. I had thought already about trying the subtraction, but hoped there was a direct way which I had overlooked.
These classes made my jaws drop during study, I can imagine they were quite a lot of work. The spurious line is a pity. Maybe I can analyze the vertex array and remove clear faults? Let's see... Kind regards, Georg On Fr, 8.11.2013, 22:21, Fabien Chéreau wrote: > Hi Georg, > > On Fri, Nov 8, 2013 at 4:45 PM, Georg Zotti > <georg.zo...@univie.ac.at>wrote: > >> Hi Bogdan and Fabien, >> >> I have the PolygonalLandscape almost working. Just one significant and >> one >> small problem, maybe Fabien can see&solve this in a minute or shed light >> on the topic? >> >> The SphericalPolygon is filled around the zenith, not the ground. When I >> reverse the polygon contours, nothing is rendered. I thought in this >> case >> StelPainter culls away everything, but disabling culling in >> StelPainter::drawSphericalRegion() L1344 leads to other bizarre effects. >> My SphericalPolygon would be something that obviously usually covers the >> bottom half of the landscape sphere plus some mountains. Can I tell >> SphericalRegion which pole it should include? >> > > Maybe (I can't remember very well) creating a polygon from a contour > expect > the polygon to extend on less than 180 deg. Instead of reversing the > contour, try to use the getSubtraction() method between the full sky > polygon (AllSkySphericalRegion) and the one you have already. > > The other problem is that the edge line which I would also like to have >> shows an extra line towards the zenith. No idea why or how to get rid of >> it. >> > > There used to be such bugs for very large areas (it was a huge pain to > make > those work at all). It's possible that some bugs were never completely > fixed. > > Fabien > > >> >> G. >> >> >> On Fr, 8.11.2013, 02:11, Georg Zotti wrote: >> > Hi! >> > >> > I have the sampling working, and the Carte du ciel horizon is also >> already >> > properly parsed. I have created a new landscape class trying to use a >> > SphericalPolygon, but it is not rendered yet. [...] >> > >> > Branch: >> > https://code.launchpad.net/~georg-zotti/stellarium/landscape-addons >> > >> > Kind regards, >> > Georg >> > >> >> >> ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ Stellarium-pubdevel mailing list Stellarium-pubdevel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/stellarium-pubdevel
