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Activity Forums Adobe After Effects Expressions CC Sphere rotation priority

  • CC Sphere rotation priority

    Posted by Tutku Tetik on August 23, 2014 at 6:03 am

    Hi,

    I’m wondering if anyone can help me? I want to give to cc sphere object continuously x and y rotation. I’ve added a slider controls and linked to sphere object. When i change rotation of sphere object, it changes direction of continuously rotation. I need to change rotation of sphere object freely but i need to keep direction of continuously rotation.

    Any help will be appreciated.

    Filip Vandueren replied 11 years, 8 months ago 2 Members · 3 Replies
  • 3 Replies
  • Tutku Tetik

    August 23, 2014 at 8:54 am

    I think it will be better if i show my problem in a project file.
    https://dl.dropboxusercontent.com/u/7526694/rotating_problem.aep

    When i increase “Rotating X” value of CC Sphere object it changes direction of continuous rotating.

    Thanks.

  • Tutku Tetik

    August 23, 2014 at 9:59 am

  • Filip Vandueren

    August 25, 2014 at 8:35 am

    This is a pretty tough math problem. You need quaternions to solve it. If you don’t know what those are, well I hardly understand them either… It’s like four dimensional imaginary rotation matrices

    Hope someone can help.

    If it would be a basic spin around the Y axis, you could fake that with animating the ‘Offset’ effect in a precomp of your texture map

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