(a revolving joist) reference point align on 2 different adaptive points

[heichan88]

Hello

I need  a reference point 4 which

(1) align (locked) on X plane on adaptive point 3, 

meawhile

(2) on Y, Z plane align (locked) with adaptive point 1, so when point 1  go down, point 4 move down also 

How can I do ?

please find rfa file

thanks

 

[barthbradley]

Orients to.  

https://knowledge.autodesk.com/support/revit/learn-explore/caas/CloudHelp/cloudhelp/2019/ENU/Revit-M....

[barthbradley]

Dang, @heichan88, it's hard to visualize what you are describing you want to do, but the way I read it now,  AP Orientation would have nothing to do with this. You're trying to do something within the Family itself if I'm re-reading you correctly. 

You don't by any chance have a photograph of what you are trying to build?  If so, could you post it?  It would help.  

[heichan88]

hello @barthbradley 

i put a series of joist on a curved surface, by adaptive point 1, 2, 3

But poinr 4 cannot rotate along with point 1,2

I want to achieve the blue color effect: point 4 rotate around point 3 , according to point 1-2,

Thanks

 

[heichan88 · Accepted solution]

now my way is a bit complicated:

(1) make adaptive family A with model lines, then

(2) host to a mass family B, inset ad family lines A by line on each location of each  future joist

(3) create form C along these ad family lines B

(4) create a pattern base joist D

(5) array repeater this joist  D on the form C

---on the way, so far working on straight part... now trying curving part

 

[ToanDN]

You don't need point 4 to twist the joist. If you create the joist with 3 adaptive points hoisted on the curved surface then the should twist itself to follow the surface.

[heichan88]

hello @ToanDN 

I had tried 3 ap adaptive family for long time ago, but the 4th poinr (rp) cannot (1) revolve follow ap 1 meanwhile (2) align on Y plane with AP 3,

if point 4 can be revolved following AP 1, then can be very flexible, (repeater, pattern or directly insert) all works, but till now i can not achieve this

Could you give a illustration ？