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Thread: Parametric Louvers

  1. #1
    All AUGI, all the time TerribleTim's Avatar
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    Default Parametric Louvers

    Took a breif look in the Revit Families forum but didn't see much there.

    Has anyone came up with a good parametric round louver?

  2. #2
    I could stop if I wanted to rkitect's Avatar
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    Default Re: Parametric Louvers

    Not a family itself, but "teach a man to fish" is always the route I go: http://www.revitcity.com/tutorials/arrays_and_nested/

    Enjoy!

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    All AUGI, all the time TerribleTim's Avatar
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    Default Re: Parametric Louvers

    Hmm,
    while I do appreciate the link to a good tutorial, it isn't really working for me. It seems to be a great idea for a square louver, but when you go round it introduces a whole new aspect of stuff that I just don't understand how to control.

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    All AUGI, all the time DoTheBIM's Avatar
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    Default Re: Parametric Louvers

    You mean like this?
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    I could stop if I wanted to rkitect's Avatar
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    Default Re: Parametric Louvers

    Quote Originally Posted by DoTheBIM View Post
    You mean like this?
    Key word parametric. Do the louvers in that family flex? If so then yes that is what he asking about

    There are 2 solutions that, only one that I know will work.

    1) Array the louver blades as shown in the tutorial then make a void extrusion that cuts the blades so that they do not protrude past the round frame of the louver.

    2) Make the length parameter of the nested blade an instance parameter and give yourself reference lines on the radius of the frame. Align and constrain the first and last blade in the array to the reference lines... I'm highly doubting this will work, but it makes sense in how it SHOULD work.

    hTh

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    All AUGI, all the time DoTheBIM's Avatar
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    Default Re: Parametric Louvers

    Quote Originally Posted by rkitect View Post
    Key word parametric. Do the louvers in that family flex? If so then yes that is what he asking about ...
    I was only asking if that is what TeriblTim meant by round louvers. As the louvers aren't actually round. If that IS what TeriblTim wants... then next question that needs asked is... "Do the louvers NEED represented in 3D geometry?". If not... my solution works very well and even renders. If they absolutely need to be 3D, then the void solution is next best IMO.

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    Certifiable AUGI Addict twiceroadsfool's Avatar
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    Default Re: Parametric Louvers

    Making Louvers with the Blades in 3D isnt that complex, nor does it produce a massive performance hit, if you control it with level of detail and nested families. By the time you factor in Detailing in section, and rendering, and perspectives, and shadows, it might as well be in 3d.

    For a SQUARE louver, i normally make in individual blade, nested in a BladeArray family, nested in to a window.

    For a ROUND louver, you unfortunately cant have the individual blade as its own family, since (as mentioned) you have to be able to cut them. This is a pretty big hampering, depending on how many aspects of the Louvers you want to be parametric. You can make the array count and spacing flexible, but basically youll want to use constraints in the void and the void alone, for controlling the size of the louvers. Trying to constrain (in the length direction) the louver solids, will warrant a nested family for the individual, which you cant use becuase you need to cut it...

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    All AUGI, all the time TerribleTim's Avatar
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    Default Re: Parametric Louvers

    Quote Originally Posted by DoTheBIM View Post
    You mean like this?
    Yes, like that!

    As for it needing to be cut, yes that would be best. It always seems like my PM decides to cut through something like that. And currently my whole implementation of this software is getting derailed by the constant issue of either "the software doesn't do that" (when they decide that a line should look a certain way or "this is how we did it in Autocad" or even better "well I can do it when I draw it by hand") or "I haven't figured out how to do that yet" (due to me being a "noob").

    Ok, I feel a little better having ranted a bit.
    Last edited by TeriblTim; 2010-05-06 at 06:18 PM.

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    All AUGI, all the time Gadget Man's Avatar
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    Default Re: Parametric Louvers

    How about making a single solid extrusion and cutting it with multiple parametric voids?
    The voids can be arrayed and you can add another void for the overall shape...

    I have one family of arched vertical skirt battens which is fully parametric (height, length, radius of the arch, etc.) keeping sizes of the battens and distances in between them always the same... (see pictures).
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