touch to clean the area

Discussion in 'iOS Programming' started by alexandergre, Nov 21, 2009.

  1. macrumors member


    Jul 28, 2009
    I have two images.
    one is blurred(A). the other one is not blurred(B).
    image (A) is on top of the image (B).
    How can I delete/opacity=0 the area on the image A where the finger has been touched?

    Thank you.
    Any tips would be great.

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