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I don’t work in Objective C but a question came up today for me on a flash site I am developing that someone is developing for the Ipad in tandem. I created some previews of products that have image overlays on them. The overlays, in flash, are basically a layered file with the product on the first layer, an image on the second with the layer set to blend:Multiply, and some masks on the third.
So my question is, how would you do this in Objective C?
Take a look at UIImage’s
– drawInRect:blendMode:alpha:.