adaptive points "frame" collapse after adding reference lines

[heichan88]

Hello

I made a set of adaptive points to form a frame which works well,

but whenever adding any one reference line between them, then the points lost their interrelations, thus the frame collapse,

for example: a cantilever part of the joist should be straight, but after adding a reference line, the cantilever part are no longer align the main joist thus twisted. I tried ref line or model lines, neither works.

Please refer to rfa

Please advice, Thanks

 

 

 

 

 

 

[barthbradley · Accepted solution]

That error message is common. 

"Highlighted geometry no longer determines a plane" when flexing adaptive point in Revit | Revit 201...

[ToanDN · Accepted solution]

Sequence matters.  If you doing it from scratch:

1. place two ref points

2. create line thru points

3. place cantilever point and host it on the ref plane perpendicular to the line vector

To fix what you have done:

After you create a thru line between two ref point, there are more work planes added to those points and you just need to pick the correct one (the one perpendicular to the vector of the line) to host the cantilever ref point.

If that is done correctly, the cantilever point will move along when you move the other two points.

[heichan88]

Hello ToanDN

 Sorry I didn't emphasize that:  What I need is to "LOOP" 4 points, ie add new ref line  connecting P and A, but after adding new line (ref or model line) , P-A not align any more with A-A.

you  mentioned step 1,2,3 (as you have already repeated in my previous thread), and it really works, but the concern is "after step 3": how to add new ref line between A and P then creat a loop), --- after add ref line between P-A, the interrelation between P-A collapse

when test in attached XXX.rfa, after add new ref line between P and A, then the alignment of P-A collapse. 

PS. when input offset value, sometimes it becomes negative (place on inner side) and some times positive (place outside), seems unpredictable.

Thanks

 

  

Thanks

[ToanDN · Accepted solution]

Is it what you want?  See attached 2019 family.

[heichan88]

Hello ToanDN

Yes exactly what I need

 many thanks! 

[ToanDN · Accepted solution]

The two mid ref points are necessary to host the cantilever points in order
to keep them lining up on the same vectors.

So, each two adaptive points host a ref line, the ref line host a mid ref point, the mid ref point host the cantilever point.

[barthbradley]

Are you by chance trying to figure out how to make the contraption angle parametrically? 

If so, maybe you can associate the RP Rotation Parameter like is done here. 

Or, am I just not following you? It happens from time to time. 😉

[heichan88]

excellent! thanks for all advices which are highly fruitful