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Activity Forums Apple Motion Build Picture Row by Row

  • Build Picture Row by Row

    Posted by Don Smith on June 27, 2011 at 7:12 pm

    I’m 80% there but can’t make this work without asking for a little help.

    I need to simulate a still picture ‘revealing’ on a TV screen as tiny sections (pixels) painting on-screen row-by-row. Of course, not really pixels, but yes, pixels in that they’re small square reveals of more of the big picture. I’ve got a row-by-row happening using Replicator and Sequence Replicator, but each small pixel is just a miniature of the big picture and not small elements of the big picture falling into place. I clearly missing a step.

    Any help would be appreciated.

    Zach Shore replied 14 years, 10 months ago 4 Members · 5 Replies
  • 5 Replies
  • Burt Hazard

    June 27, 2011 at 10:12 pm

    Patrick Sheffield had developed a technique for this:

    https://discussions.apple.com/message/3479095?messageID=3479095

  • Zach Shore

    June 28, 2011 at 12:24 am

    This technique should work for you.

    1. Add the Blocks Random IN replicator from the Library>Replicator.
    2. Select the replicator and in the Inspector, uncheck Shuffle order.
    3. Go to the Sequence replicator behavior already attached to the replicator and remove the scale and position channels.
    4. Add an Opacity parameter to the behavior(parameter>add>opacity). Set it to zero.
    5. Select the image you want to draw on and apply an image mask (command-shift-m).
    6. Drag and drop the replicator onto the image mask.

    The replicator should now draw the image on from the top left to the bottom right. You can now modify things to get the look you want:

    -Change the behavior length to control the speed.
    -Change the Behavior>Spread parameter to control the fade as it draws on.
    -Change the Cell Scale to set the “pixel” size.
    -Change the replicator size, columns and rows depending on the size of the video and the space between cells.

    You can come push the buttons or you can let me do my job.

  • Anders Larsen

    June 28, 2011 at 8:03 am
  • Don Smith

    June 28, 2011 at 1:26 pm

    Zach! Thank you! Here’s the result:

    https://vimeo.com/25705933

    Also, thank you to the others who replied. I tweaked the effect using tips from the other posts here as well. Thank you all so very much.

    Don Smith
    NewsVideo.com

    NewsVideo.com

  • Zach Shore

    June 28, 2011 at 3:45 pm

    Glad to have helped.

    You can come push the buttons or you can let me do my job.

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