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Help with parameters

3 ANTWORTEN 3
GELÖST
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Nachricht 1 von 4
malonicivil1
257 Aufrufe, 3 Antworten

Help with parameters

Hi! I need some help searching for a solution to put parameters in this family of Revit so that changing the biggest radius it all maintains tangent to each other circunferences. Thanks.

tangents.png

 

3 ANTWORTEN 3
Nachricht 2 von 4
L.Maas
als Antwort auf: malonicivil1

You will have to look at math formulas. When you modify the radius of the big circle you will have to calculate the internal tangent of the smaller circle. With a formula of a parameter you can reposition this smaller circle to get it tangent again. Because two circles can have internal tangents on many position, you will have to decide in which direction the smaller circle should move. So think about constraints.

So check math sites and look for internal tangents to learn more about the formulas

Louis

EESignature

Please mention Revit version, especially when uploading Revit files.

Nachricht 3 von 4
barthbradley
als Antwort auf: malonicivil1

Circular Segments.png

Nachricht 4 von 4
ToanDN
als Antwort auf: malonicivil1

Try this family.

 

ToanDN_0-1641935540560.png

 

ToanDN_1-1641935564780.png

 

 

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