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Thread: strong reference / weak reference

  1. #1
    Member lost again again's Avatar
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    strong reference / weak reference

    I thought a strong reference will allow for shape handle stretching a family in a project and a weak reference will allow for moving a family in a project. It seems the following post from 2010 explains it like that:

    Revit OpEd: IsReference Setting - Weak and Strong

    But now the documentation

    https://knowledge.autodesk.com/suppo...910F5-htm.html

    and my experience today show that both strong and weak reference planes stretch the family in the project. Does anyone know when (and why) this changed? It seemed logical before, now less so by seemingly negating an important reason for distinguishing between strong and weak reference planes.

    Of course, it may just be I don't know what I'm doing.

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    Forum Addict elton williams's Avatar
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    Im on 2018 and strong/weak still works the same way.

  3. #3
    Mr. Revit OpEd
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    Both Strong and Weak “work” but opposite of each other. The TAB key allows us to reverse the behavior from “stretch” to “move” elements and vice versa, watch the status bar.
    elton williams and duende123 like this.

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    Forum Addict elton williams's Avatar
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    Quote Originally Posted by Steve_Stafford View Post
    Both Strong and Weak “work” but opposite of each other. The TAB key allows us to reverse the behavior from “stretch” to “move” elements and vice versa, watch the status bar.
    Never knew that. Have they always worked that way?

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    Senior Member chris.macko's Avatar
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    I haven't played around too much with strong vs weak references, but from what I've seen the center references (just says "reference" in the status bar while hitting tab) will move the family, where a weak or strong reference associated with an instance parameter will stretch it. If either is a type parameter it will move the family instead of stretching it. In previous versions the status bar would just say shape handle, whereas now it says the type of reference plane( strong, weak, etc)
    elton williams likes this.

  6. #6
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    Quote Originally Posted by Steve_Stafford View Post
    Both Strong and Weak “work” but opposite of each other. The TAB key allows us to reverse the behavior from “stretch” to “move” elements and vice versa, watch the status bar.
    Thanks for the information, but I can't tell when tabbing works as you say. I'm currently using the align tool, which does not seem to accept tabbing while selecting the "thing to be aligned" reference plane.

    I'm trying align a family's "back clearance" reference plane with a wall face. Selecting the wall then the reference plane shifts the reference plane in the family (changing the back clearance) but does not move the family as intended. I use this tool for another family with no problem and don't know what is different between my families that makes the align tool work in this way one time but not the other.

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    Senior Member chris.macko's Avatar
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    Is back clearance an instance or type parameter?
    If you make it a type parameter it should work, or, alternatively, you can make the clearance reference plane "not a reference" and then lock an invisible line to it.
    Last edited by chris.macko; June 25th, 2018 at 02:58 PM.

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    Quote Originally Posted by chris.macko View Post
    Is back clearance an instance or type parameter?
    If you make it a type parameter it should work, or, alternatively, you can make the clearance reference plane "not a reference" and then lock an invisible line to it.
    Thank you for pointing that out, and for the options to resolving this issue. All parameters are instance at this point (this family is meant to be a generic skeleton with sizes and clearances to be determined for each project, so instance was my first choice).

    Changing the parameter to type does indeed allow for the behavior I want when aligning to the wall. Better yet, the "not a reference" / invisible lines strategy also resolves the issue, plus: when the family is selected in the project, the invisible detail lines are visible in plan and elevation, allowing me to visually confirm the clearances are met.

  9. #9
    Mr. Revit OpEd
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    The Hover/Tab feedback is Shape Handle or Reference (the reference plane name included sometimes).
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  10. #10
    Senior Member chris.macko's Avatar
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    Quote Originally Posted by Steve_Stafford View Post
    The Hover/Tab feedback is Shape Handle or Reference (the reference plane name included sometimes).
    That's how it behaved prior to 2018, but now "shape handle" is replaced by "Reference plane type : Reference plane name". It just says reference when highlighting a piece of the geometry instead of an RP.
    elton williams and Tina_tnl like this.

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