Re: Drawing noise in Cocoa (preferably fast)
Re: Drawing noise in Cocoa (preferably fast)
- Subject: Re: Drawing noise in Cocoa (preferably fast)
- From: Quincey Morris <email@hidden>
- Date: Tue, 14 Jun 2011 15:07:07 -0700
On Jun 14, 2011, at 14:56, Stephen Blinkhorn wrote:
> I'm looking to fill a large custom view with noise. The solution I have arrived at so far is taking much too long to draw for it to be useable. Does anyone know any better ways of achieving this in Cocoa? The basic idea is to add an amount of noise to a base color pixel by pixel, for example:
Have you looked into using Core Image, e.g. the CIRandomGenerator filter composited onto an image filled with the base color?
For something trivial (in Core Image terms) like this, there's a fairly steep learning curve, but the point of Core Image *is* performance.
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