Hi all! Am 23.12.2010 um 15:52 schrieb Matthias Arndt:
> I think the only way to decide for the best way is a test app, performing > several thousand drawings in each method, but did I miss any important > approach? Do you know one of the mentioned methods not being worth the > effort? Any suppestions, ideas, additions? For those of you interested in the results, here's what I did: With a sample app drawing random lines I measured different approaches: - Cocoa NSBezierPath to draw each line three times (with an outline in black and the highlight in white): Original situation - Same concept as before, but using CoreGraphics: 10% performance improvement - Construct an outline path in CoreGraphics and fill it with a gradient: 10% - 80% better performance - Construct an outline path in CoreGraphics and draw an inner shadow: 10 times worse performance! - Draw 2D lines in OpenGL I dropped the OpenGL approach due to too many drawbacks, e. g. missing round line caps, resolution-dependence of line width, ... The shadow approach looks best, but is out of question due to its bad performance. At the end I tweaked the gradient approach a bit, what costs me nearly all performance improvements (depending on the number of lines), but is looking ways better than the old method (if you're interested in the result, here's a link to a screenshot in the Developer Forum's thread: <https://devforums.apple.com/thread/81174>). Happy New Year, Matthias_______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
