Quartz Composer Help--Music Viz

Discussion in 'Mac Programming' started by pennella, Nov 28, 2009.

  1. pennella macrumors newbie

    Joined:
    Nov 28, 2009
    #1
    Hey guys,
    I need to make a music visualizer in quartz composer.
    The only twist is that I need the bars that are created from the input to show up inside of a predetermined shape or object.

    For instance, say that I have a circle. When the bars are drawn, the only ones i want to see are the ones that intersect with the shape of the object. Please see the attached photo.

    Any help would be great.

    Basically I want to mask the bars.
     

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  2. robbietherobot macrumors newbie

    Joined:
    Oct 12, 2005
    #2
    Simpler than you think

    Just bring in an PNG with an alpha channel of your image and lay it over as a "Sprite" / "Billboard".

    See attached .qtz and accompanying .png.
     

    Attached Files:

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