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Re: Cocoa and PICT

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Re: Cocoa and PICT

Subject: Re: Cocoa and PICT
From: Alastair Houghton <email@hidden>
Date: Fri, 10 Aug 2007 22:25:33 +0100

On 10 Aug 2007, at 14:51, glenn andreas wrote:

There's even support for smoothing polygons using picture comments, which might be handy for simulating bezier paths.
Quickdraw pic comment based smooth polygons are cubics, and bezier paths are quadratic curves, and converting from one to the other is non-trivial (for any sort of decent quality).

I think you got that the wrong way round. QuickDraw's PolySmooth picture comment uses quadratic curves; NSBezierPath provides a cubic primitive. (Plainly you knew what you meant, since converting quadratic curves to cubics is easy... it's the other way that requires piecewise approximation.)

Kind regards,

Alastair.

--
http://alastairs-place.net


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References:  
  >Cocoa and PICT (From: "I. Savant" <email@hidden>)
  >Re: Cocoa and PICT (From: Uli Kusterer <email@hidden>)
  >Re: Cocoa and PICT (From: glenn andreas <email@hidden>)




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