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Thread: Aligning: Move vs Stretch

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    Moderator DaveP's Avatar
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    Aligning: Move vs Stretch

    I found an old AUGI post by Steve Stafford that states
    If you are referring to the way the family reacts to using the Align tool then what you click on and what the reference planes are assigned to affects the outcome. If the reference plane is assigned to "weak" then Revit will see the geometry of the family first and "move" the family when you align it to something else. Revit will see "strong" reference planes first and Align the family (stretch it) instead. It comes down to watching the tip that appears on the status bar (or your cursor). Watch for the tip that the reference is found, not the shape handle of the geometry. If you align using the reference plane (strong or weak) it will stretch the family, the shape handle will move the family instead.
    But I can't get my family to do that.
    The Origin of my family a Reference Plane at the front face.
    I've got a parameter I called Sink Setback that dimensions to the from of the sink bowl.
    But no matter what I set the RPs to, the Setback value always changes if I use the Align tool in a project.
    What I want is the Setback parameter to change only if I type it in, not when I Align the family

    Any idea what I'm doing wrong?
    P.S. This is a face-based family & needs to be hosted on casework
    P.P.S. rant: WHY doesn't the "Place on Face" setting stick? I rarely want to "Place on Vertical face"
    Attached Files Attached Files

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    Moderator cellophane's Avatar
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    The session John Pierson did on Flexible Families might have what you are looking for in it. I'm 99% certain he has presented it at BILT, and I know it has been at AU.

    https://www.autodesk.com/autodesk-un...lex-Never-2017

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    jmk
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    So I downloaded your family, opened in in both 2018 and 2019 and loaded it into a default Revit project, hosted it to a surface, and it seems to work as described, the sink setback doesn't change. Have you tried loading it into a blank project? I wonder if an earlier version didn't get overridden correctly...

    Quote Originally Posted by DaveP View Post
    P.P.S. rant: WHY doesn't the "Place on Face" setting stick? I rarely want to "Place on Vertical face"
    I agree, it would be SO nice if you could set the default placement type in each family. Each type has its use, and varies by family. Occasionally you do need to change it (for that sink installation art piece...) but 99% only one method should be used for a family. The way it currently is confuses new users and frustrates experienced ones!

    While we're there, I wish we could disable the ability for regular families to "host" to floors. If I wanted the casework hosted to the finish floor I'd build it that way, I want it hosted to the level!

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    Moderator DaveP's Avatar
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    Thanks, guys.
    Chad, yes I did look at John's class handout. But I didn't see anything in there explicitly about Aligning or Weak vs Strong
    jmk, the family itself works as expect. It's just the Align to doesn't work as I expect it to. If I place a sink without paying attention to where the origin is, and then later use the Align Tool to line up the invisible front Reference Plane, the Plane aligns with the edge of the countertop, but the bowl stays in the same place and the "Sink Setback" parameter value changes. I want to have the parameter retain the same value, and the entire family move

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    jmk
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    Quote Originally Posted by DaveP View Post
    Thanks, guys.
    Chad, yes I did look at John's class handout. But I didn't see anything in there explicitly about Aligning or Weak vs Strong
    jmk, the family itself works as expect. It's just the Align to doesn't work as I expect it to. If I place a sink without paying attention to where the origin is, and then later use the Align Tool to line up the invisible front Reference Plane, the Plane aligns with the edge of the countertop, but the bowl stays in the same place and the "Sink Setback" parameter value changes. I want to have the parameter retain the same value, and the entire family move
    I didn't have any problem aligning it though - I could place it anywhere on a face, use the align tool to pick an edge and the invisible line, and the family moved without changing the setback value. The entire family would move.

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    Moderator DaveP's Avatar
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    Sigh. It's been that kind of day.
    I'l try again in the morning.

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    jmk
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    Here's a screencast of how it was behaving in a default project: https://knowledge.autodesk.com/commu...0-84549639bc7a

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    Forum Addict GMcDowellJr's Avatar
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    Make the reference planes not a reference.


    Sent from my iPhone using Tapatalk

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    Moderator DaveP's Avatar
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    Julie, I'm not sure how you got it to work, but it still didn't for me.
    Greg: you nailed it. I had to set the RP to "Not".
    TBH, I had kind of forgotten that I had an Invisible Model Line in there, and THAT's what the Align tool actually uses.

    Thanks, all. It all works like I want it to now.

  10. #10
    Member Bjorn_K's Avatar
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    Small extra tip on this subject:

    Since last year the tooltip in the Status bar actually has been updated, if you tab into the end of your Family with the Align tool active now, once you start Tabbing you will see the terms "Weak" and "Strong" appear.

    So, Strong Refplanes with an instance Length parameter and the Align tool, click to stretch, tab click to move.
    Weak Refplanes with an instance Length parameter and the Align tool, click to move, Tab click to Stretch.
    Last edited by Bjorn_K; January 22nd, 2019 at 07:23 PM. Reason: spelling be hard yo
    cellophane and M_cubed like this.

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