Christopher Barker wrote: > Michael Droettboom wrote: >> Wx supports polycurves in its new wxGraphicsContext API (but not the >> wxDC API that mpl uses now). This means a fairly complete rewrite of >> the wx backend, > > not necessarily. You can create a GraphicsContext from a wx.DC, you may > be able to just add that step for drawing polycurves. > >> since you >> can no longer draw to an in-memory buffer, but only a true wxClientDC). > > you can create a GraphicsContext from a wxMemeoryDC, so yes, you can > draw to a buffer.
I'm having trouble just getting a wxPython to compile with wxGraphicsContext support (perhaps another argument against using it...) I was basing this determination on the wx documentation which clearly states one can only create a wxGraphicsContext from a wxWindowDC. wxMemoryDC inherits from wxDC, not wxWindowDC. I'd be certainly happy to find out that the documentation is incorrect on this point, as it would certainly make the implementation easier. > I haev no idea what the impact on performance would be, but in general, > GraphicsContext is slower than DC. Particularly, if it works as it appears to by rendering to a Cairo buffer first. >> So, we need to look at the pros/cons of continuing to support these >> legacy APIs going forward. > > yup. I know I never need a non-agg wx, but then I can see why folks > running remote X severs would want it. > > I wonder if there is another way to speed that up with Agg -- can you > compress the bitmap data to pass it to the Xserver? is that happening > already? You can compress the ssh connection over which X11 tunnels with the -C commandline flag. But whether that makes things faster or slower depends on the compressability of the data itself, and the relative speeds of the processor vs. network link, of course. Cheers, Mike -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
