On 29/01/2009, at 6:27 PM, Oleg Krupnov wrote:
Yeah, the question is however how do I technically (e.g. in Cocoa) composite the "appropriate alpha" with an image, whether the background image, as you suggest, or with text image, as Ricky suggested. AFAIU, there is not such NSCompositingOperation to do this trick. It appears that I need to iterate all pixels of the intermediate bitmap, and multiply the transparency value by the mask. This is quite low-level, is there a better way?
Yes, Core Image. But you should read Quincey's post, which I agree with. Unless you have a very good reason to do otherwise, you should just use the standard text truncation options.
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