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Shape handles: Want to compress, but not enlarge

7 ANTWORTEN 7
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Nachricht 1 von 8
marieHPAJL
603 Aufrufe, 7 Antworten

Shape handles: Want to compress, but not enlarge

Dear community.

 

I am a lighting designer and am quite new to Revit Lt.

 

I have made myself a nice family of tracks and spotlights, and am looking forward to nice schedules with all the track parts in use listed with no need of manual counting.

 

My tracks have shape handles so that I can visualize e.g. a 3m track cut to 2m. 

Now - one problem here: My 3m track can be compressed to be 2m - that's great. But when I move the 3m track around e.g. with the help of the align tool - is happens from time to time that I accidentally elongates the 3m track to say 4m, a thing that should not happen.

 

Any workarounds here? A shape handle that only compresses?

And is it possible to turn off the shape handles for instances?

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7 ANTWORTEN 7
Nachricht 2 von 8
martijn_pater
als Antwort auf: marieHPAJL

Perhaps group it or nest the family in-place.

Nachricht 3 von 8
norbert_szlezak
als Antwort auf: marieHPAJL

Hello @marieHPAJL 

as far as I know shape handles work both ways.

What you can do would be to lock the maximum distance inside the family. Let's say you can create one additional dimension spanning from the beginning to the end of the model, then based on this dimension you create the parameter and lock is by using the formula, ex. DistanceCheck = if(Length>3000,0,Length)

What this formula does is that it sets Length as 0 once it's bigger than 3000, what will result in model error.

Hopefully that helps!

Nachricht 4 von 8
marieHPAJL
als Antwort auf: norbert_szlezak

Thank you - that seems to be what I am looking for!

Nachricht 5 von 8
martijn_pater
als Antwort auf: marieHPAJL

Ah I see, you want to have it max 3 meter. Didn't really get that from the question. I thought you still wanted to be able to make it 4 meter, just not accidentally when aligning... ^^

Nachricht 6 von 8
marieHPAJL
als Antwort auf: martijn_pater

Hi! I want not to be able to stretch the track too far. I wonder if I can make a formula like this: If length is greater than 3m, then 3m. I will try it out!

Nachricht 7 von 8
ToanDN
als Antwort auf: marieHPAJL

Assume the original parameter is Lengtg, add another parameter named Output Length and assign it to the geometry dimension.  Enter the formula for this parameter:

If (Length > 3m, 3m, Length)

Nachricht 8 von 8
marieHPAJL
als Antwort auf: ToanDN

Thank you, Toan - I will try that out!

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