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hebeinpj

counter rotate

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  • Hey guys!

     

    I have (what I hope to be) a pretty easy question that I can't seem to get a grasp on. I have a rotating object, say a sphere, in cinema, and I want to have another object, a plane, counter rotate as the sphere spins, while being a child of that parent(sphere). Please let me know if you have any ideas! 

     

    Thank you!

     

    Peter

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    Simply put, you can't do what you want because it is parented by the Sphere. As an alternative, group them together under a Null (not parented) and animate/keyframe the objects in opposite directions that way. If you then, for instance, want to move them both whilst rotating,  animate/keyframe the Null and they'll move together.

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    Surely it's just local co-ords ? The child's net rotation is the difference between parent rotation and the child local rot eg if the child has -2X the parent angular velocity, it will turn at the same rate as the parent but in the opposite direction..

     

    local.c4d

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    @jed is correct...maths to the rescue :) I obviously didn't think about it long enough. Apologies.

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