Splines not updating to changed geometry utilizing "Include 3d geometry"

[Anonymous]

Super F360 Noob here.

I'm doing Taylor Stein's Advanced Sketching webinar. At around 33+ minutes he demonstrates "Include 3d geometry" to attach splines to in 3d space. I am able to build the splines as shown but when I update the boxes, the 3d splines do not update. The included 3d geometry corner edges seem to upate but the splines (which have coincedence and tangent constraints) do not update. The splines seem to act like the have no history (Alias reference). What am I doing wrong (it's usually me)?

Thanks Ed

[promm]

@Anonymous,

Thank you for pointing this out.  I am looking into the workflow and will follow up once I know more.

Cheers,

Mike Prom

[colin.smith]

Hi @Anonymous

It looks like this time it isn't you.  I've got some other folks looking in to this but I was getting the same results.

Colin

[michallach81]

This is serious bug and fixing it should be prioritized very high. There is a workaround, and that workaround should indicate where might be the source of that behavior. Give me few minutes I'll be back with screencast, for now I'll show resault:

Michał

[michallach81]

... tooks ages for screencast to complete...

[michallach81]

Here's my guess and workaround:

[jeff_strater]

You are correct - this appears to be a bug in the spline solver when referencing included 3D geometry.  It works OK with a line, but not with a spline.  We will file this bug and get a fix prioritized.

thanks for reporting this

Jeff

[jeff_strater]

One more clarification.  It appears to be that what is missing is the coincident constraint.  It is not captured correctly at creation time.

Another fix (until we fix the bug), is to go back in and create the coincident constraint.

See this screencast:

Jeff

[michallach81]

This is exactly what I've noticed, missing or not working coincident coinstraint.

[Anonymous]

I'm excited at your reaction and speed to my question. Thanks for the response.

Two more questions (don't know if this is the right place to ask): 1) Ideally would a tangent contraint automatically imply a coincident constraint? 2) Is there any way to establish a curvature constraint?

Thanks,

Ed

[michallach81]

1) ... No... but it's not all that simple. Coincident constraint could be applied to end points, points, lines, splines and many others where Tangent/Smooth constraint (C1/C2), can be applied between geometries that are at least 2d... points have no dimension (position only)... as I said complex stuff.

2) You've already made that by picking Tangent Constraint from sketch pallete, and picking spline and line... that how you're establish tangent constraint... Except tangent constraint (C1) we can apply also Smooth constraint (C2).

What we really missing is proper indicators for all constraints... as an example we can take polyline, we know that there are coincident constraint between segments, but nothing tell us about it.

Michał

[Anonymous]

Hi Jeff,

There still seems to be an issue with spline, 3d geometry and constrains. I am following Taylor Stein's webinar - https://www.youtube.com/watch?v=Dfxm8irfEhc - to a point and cannot replicate applying tangent constrains to a spline and edges included in 3D geometry.  (31'50" into the video) Once I click on a tangent constrain icon I am not able to select the spline... Any suggestions would be appreciated.

Best,

Ziggy

[cekuhnen]

@Anonymous

This bug is logged and they are looking into it. I send them some days some test files reporting this problem.

The next hot-fix I think will hopeful address this and the new 3D sketch bug too.

I am curious tho why you do not use the G1 / G2 option for the profiles?

G1 will give you here the same result as your rail network.

In your loft feature you have profiles set to G0 being positional. Then the rails being G1 make no big difference technically speaking.