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Unable to derive formulas from reported parameters (angles between ref lines connecting adaptive points)

8 ANTWORTEN 8
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Nachricht 1 von 9
Ro-Ra
589 Aufrufe, 8 Antworten

Unable to derive formulas from reported parameters (angles between ref lines connecting adaptive points)

Very simple question but cannot get around it after several days of trying. I would like to calculate the bisector angle between two reference lines that connect adaptive points so that I can generate a reference line that divides the measured angles equally. However the dialogue "A reporting parameter can be used in a formula only if its dimension references are all to host elements in the family." What does this mean? Are the adaptive points considered "host elements"? Or is there no host elements to relate to in this case? I was able to use the distance between two adaptive points as a reporting parameter for other parameter formulas.

 

See screenshot below for the general idea.

 

RoRa_0-1663695444420.png

 

8 ANTWORTEN 8
Nachricht 2 von 9
jvpantin2
als Antwort auf: Ro-Ra

"A reporting parameter can be used in a formula only if its dimension references are to host elements in the family (such as levels, curtain panel boundary reference planes). If any of the dimension's references is to family geometry, the dimension can be labeled with a reporting parameter, but this parameter cannot be used in formulas."

 

https://knowledge.autodesk.com/support/revit/learn-explore/caas/CloudHelp/cloudhelp/2020/ENU/Revit-M....

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Nachricht 3 von 9
ToanDN
als Antwort auf: Ro-Ra

Share the family.

 
Nachricht 4 von 9
barthbradley
als Antwort auf: Ro-Ra


@Ro-Ra wrote:

 generate a reference line that divides the measured angles equally.

 

 

 


 

Wouldn't this do that?  

 

NCP.png

Nachricht 5 von 9
Ro-Ra
als Antwort auf: Ro-Ra

Attached is a R2021 adaptive generic model family with the said connections and an attempt to enforce parameter "Angle 123 Half" to be equal to "Angle 123 / 2" and "Angle 234 Half" to be equal to "Angle 234 / 2". For some reason I need to connect the adaptive points with reference lines in order to measure the angle which I guess is the issue.

 

@barthbradley Yes, I would accept this as a solution if there is no simple way (one that I imagined), thanks. Curious to hear answers because this is my way of learning family creation.

Nachricht 6 von 9
ToanDN
als Antwort auf: Ro-Ra

I would use the same approach.  The only thing I would add is you need the same distance from the 2 side points to the corner to get the equal angles.

 

ToanDN_0-1663702591371.png

 

 

Nachricht 7 von 9
barthbradley
als Antwort auf: Ro-Ra

 

Try this on for size then...

 

 

 

Bisect1.png

Bisect2.png

 

 

Nachricht 8 von 9
barthbradley
als Antwort auf: Ro-Ra

oh, and BTW, no parameters needed.  As said, circle can be a fixed radius.  Doesn't matter.  

Nachricht 9 von 9
Ro-Ra
als Antwort auf: Ro-Ra

Thanks very much! This is the best solution. Too bad Revit doesn't allow the user to measure the angle between three adaptive points which would circumvent this mental excersize!

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