SKSpriteNode is new to me. For the image below, I am wondering what are some ways I can get the rect of the non-transparent part using sprite kit.
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danny huang
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What do you mean by detect? – godel9 Dec 05 '13 at 04:08
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like get the rect of the blue parts – danny huang Dec 05 '13 at 04:55
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You want the minimum `CGRect` that contains all the points with non-zero alpha? – godel9 Dec 05 '13 at 04:58
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Yes, thats exactly what i want – danny huang Dec 05 '13 at 05:00
