On 8 Aug 2011, at 5:16 PM, N!K wrote: > Does NSBezierPath do decimation as well as interpolation? I didn't find it in > the Class Reference. > Or is there another class that does it? > Or must I do the decimation before plotting the data with NSBezierPath?
No, NSBezierPath doesn't do any kind of decimation or filtering. You'll need to do that yourself and then use something like NSBezierPath or CGContextAddLines to draw your curve once you've filtered and subsampled your data. Also, FWIW, the last time I tried to do that (which was a long time ago, around the 10.1/10.2 timeframe) I discovered that Quartz took a superlinear amount of time to draw a polyline; it looked vaguely quadratic to me. Breaking the curve up into chunks of a few hundred points at a time made the drawing operation much faster (and the slight drawing imperfection wasn't noticeable). On the other hand, perhaps this problem has been fixed since then. :) _______________________________________________ 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
