Re: Rotated and scaled CALayer
Re: Rotated and scaled CALayer
- Subject: Re: Rotated and scaled CALayer
- From: Vincent Habchi <email@hidden>
- Date: Tue, 14 Dec 2010 15:56:22 +0100
Hi Ramas,
> No I hadn't. I not quite sure which action (and how) I could use in
> addition with Core Animation. I need (near) real-time drawing for
> scaling and rotating. So dealing with pixels data for every update is
> quite expensive. Unless I am missing something?
It is written in the basic documentation of the vImage framework that it was precisely done to support real-time or near real-time geometrical operations on raster files like rotation and interpolation. I must admit, however, that I never dug into it myself: I do a lot of CALayer affine transforms in the application I'm writing, but I don't care about rotated pixels since I mostly deal with vector data.
Cheers!
Vincent_______________________________________________
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