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Thread: Rotation control of a spherical object with parameter value

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    Rotation control of a spherical object with parameter value

    Is it possible to make a rotation controlled family with spherical element by a parameter value? I have tried to draw a reference line locked to origin but couldn't manage to control the rotation. Any ideas, anyone?

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    - Create a revolve, make it's End Angle parameter your rotation parameter. Create a new parameter for Start Angle, with a formula like this: (End Angle -5) so your revolve will work with any value.
    - Make this revolve invisible
    - Host your real element on the side of this revolve, the element will rotate with the angle parameter

    This is based on the AU class of Marcello Sgambelluri: https://www.youtube.com/watch?v=Em6n3J2L1UA

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    Quote Originally Posted by infeeeee View Post
    - Create a revolve, make it's End Angle parameter your rotation parameter. Create a new parameter for Start Angle, with a formula like this: (End Angle -5) so your revolve will work with any value.
    - Make this revolve invisible
    - Host your real element on the side of this revolve, the element will rotate with the angle parameter

    This is based on the AU class of Marcello Sgambelluri: https://www.youtube.com/watch?v=Em6n3J2L1UA
    You are a life saver. Thank you for enlighten me.

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    Revit Guru marcello's Avatar
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    Glad it helped you!

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    Quote Originally Posted by marcello View Post
    Glad it helped you!
    Hey Marcello, did you close your receiving messages from message settings? I have been trying to reach you.

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    Administrator Munkholm's Avatar
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    Quote Originally Posted by Email reply from Marcello
    Maybe
    Contact me via blog
    Simplycomplex.org
    Or twitter or LinkedIn

    Thx
    Marcello
    ....

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    By the way, it is weird to create a solid whose only function in the model is to make something else rotate. Imagine you are doing a coordination review in Naviswork and in one of the models that you are using for coordination somebody forgets to hide that object. Then you ask "what is this thing?" Most people will say "I have no idea", until somebody else says: "oh, it is something I need to make that other object rotate". Hmm...

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    somebody forgets to hide that object
    I think if somebody fails to follow a relatively easy workflow, it doesn't mean that the workflow is wrong. My simplified explanation is like 3 steps. if you leave out one, you didn't do 33% of the required steps.

    Of course your issue is legit, but I didn't find an easier and more stable solution for this problem. It also helps new users understand how hosting works.

  9. #9
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    1 Not allowed! Not allowed!
    Not to mention, you can legitimately make that Revolve a Void object, and not even have to hide it. LOL.

    I dont use the method, mind you (because i find Ref Line hosted to Ref Line hosted to Ref Line to make more sense), but the folks doing 3d Coordination are some of the smartest in the business. They will be okay.

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