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Thread: Building Stable Door Plan Swings

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    Junior Member Zuefeldt Design's Avatar
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    Building Stable Door Plan Swings

    Hi friends,

    I was reading a great and very informative thread started by jmk recently https://www.revitforum.org/architect...volve-rig.html where Aaron Maller posted a fantastic rotation rig that I have spent the last week dissecting and learning from (Thanks Aaron!). Naturally, I was inspired to incorporate the rig concepts into my door families since they offer superior flexibility and stability compared to any other method I have seen and tested. Everything works great! However, the plan swing graphics -which I feel like have always been problematic- are proving to be a limiting factor in the power of this rig.

    In Marcello Sgambelluri's lecture, Methods That Make Your Revit Families Move, he really demonstrates the potency of utilizing revolve forms in dynamic revit families. Something feels wrong about modeling the plan swing as a 3d revolve object instead of as a line, but as far as I can tell it is totally stable and follows the flexibility of the rotation rig perfectly.




    I would love to hear feedback on whether this method might be or not be viable for plan swings. I am not aware of much development or discussion on
    -specifically- plan swings in the last few years. It feels like we reached a point of good enough and settled for that. Thanks, and have a wonderful Memorial Day weekend!
    Attached Thumbnails Attached Thumbnails Building Stable Door Plan Swings-capture.png  

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    Forum Co-Founder Twiceroadsfool's Avatar
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    Im not sure what issue you are having with Plan Swings, specifically: I dont use the Revolve method, and all of my Plan Swings are completely stable. Mine have 3D geometry in the swing, but the Swing LINE is not tied to that 3D geometry at all. The swing LINES are constrained 100% on their own.

    Whats the ACTUAL issue you are having with the plan swing (not a generalization about "stability, whats the ACTUAL issue)?
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    Member kowen1208's Avatar
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    Not sure if you're mixing Aaron's rig with Marcello's rig, but I'd stick with one or the other.

    I personally don't care about having tons of flexibility in my door swing graphics, so I only have 45, 90, and 180 degree visibility parameters. My graphic is in its own generic model family that's nested into the parent door family, and has plan and elevation graphics.
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    Junior Member Zuefeldt Design's Avatar
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    In the case of this rig, the panel is hosted to a reference line. I don't believe I can lock two planes to the rotation point of the reference line? If i were to follow the standard plan swing approach I would need to lock the plan swing center mark to the axis reference planes. Perhaps I need to look further, but substituting those for reference lines was causing issues with the rig offsets when combined with the rotation parameter.

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    Forum Co-Founder Twiceroadsfool's Avatar
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    Quote Originally Posted by Zuefeldt Design View Post
    In the case of this rig, the panel is hosted to a reference line. I don't believe I can lock two planes to the rotation point of the reference line? If i were to follow the standard plan swing approach I would need to lock the plan swing center mark to the axis reference planes. Perhaps I need to look further, but substituting those for reference lines was causing issues with the rig offsets when combined with the rotation parameter.
    I apologize: I'm not understanding what you are saying, at all.

    What I can tell you is my swing lines are lines, they are parametric everywhere from 0-180 degrees (and everywhere in between) and are flexible to move with the rest of the door.

    Turn on center mark for the swing line, and align and lock the center mark. It works fine.

    Sent from my Phablet. Please excuse typos... and bad ideas.

    Aaron Maller
    Director
    Parallax Team, Inc.

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    Junior Member Zuefeldt Design's Avatar
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    Thanks for talking me through that, apologies on not being clearer! I think I have it working properly, the trick appears to be that you need to host the swing line on the reference line that rotates the door panel, then lock the center mark to that reference line, then lock one end of the swing line to the same reference line, then add the angle parameter to the swing line.

    That's still convoluted to follow by text but anyways the plan swing works now. I was taking the wrong approach to the center mark locking before.

    Ive attached the family for reference.
    Attached Files Attached Files

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    Forum Co-Founder Twiceroadsfool's Avatar
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    My Swing Lines arent hosted to the rotated Ref Line, i am certain... But there are a bunch of different hings you can do in there, and they should all still work, so it doesnt matter.

    Glad you got it working!

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    Senior Member DavidLarson's Avatar
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    If by unstable you mean they go wonky after 135 degrees, just add another angle constraint on the opposite side.

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