topic Re: Bridge Tool Self intersection in Fusion Support Forum

Bridge Tool Self intersection

Anonymous — Mon, 11 Dec 2017 12:24:13 GMT

So I am trying to bridge two faces together that I created by inserting an edge via the insert points tool on an extruded face. Whatever I do including flip 1 or 2 it still self intersects. I have tried it on various models and I get the same - Am I doing something wrong or is this a bug? Any help appreciated. Thanks

Re: Bridge Tool Self intersection

James.Youmatz — Mon, 11 Dec 2017 14:50:16 GMT

Hi @Anonymous,

It almost looks like the bridge is twisting along the way, but it is hard to tell from the screenshot. Do you mind sharing the file with me so I can try a few things? If it is a bug, I will go ahead and log it with the team.

Thanks,

Re: Bridge Tool Self intersection

Anonymous — Mon, 11 Dec 2017 15:53:36 GMT

I tried a few things myself - I deleted the faces redid them...unskewed
them, but still nothing. I have encountered this problem before..If you
send me your email I'll invite you to the file....

Re: Bridge Tool Self intersection

James.Youmatz — Mon, 11 Dec 2017 16:21:56 GMT

Hi @Anonymous,

You can use james.youmatz@autodesk.com. What is the name of the problematic file?

Thanks,

Re: Bridge Tool Self intersection

TrippyLighting — Mon, 11 Dec 2017 16:31:30 GMT

Is there a particular reason to choose the sculpt environment for thes rectilinear forms ?

Re: Bridge Tool Self intersection

Anonymous — Mon, 11 Dec 2017 16:33:36 GMT

well when I smooth them I get a nice organic shape...not sure if this is
easily achievable in the model panel....

Re: Bridge Tool Self intersection

TrippyLighting — Mon, 11 Dec 2017 16:57:17 GMT

True! Not knowing what your background and experience is I just wanted to make sure you are using the correct tool. It would not be the first time that a user is trying to do stuff in the Sculpt workspace.

Can you share your model ?

Re: Bridge Tool Self intersection

Anonymous — Mon, 11 Dec 2017 17:24:36 GMT

I've been a Maya user from v1.0! I recently discovered fusion and have been
very excited to learn everything i can about it. The model is really a
series of tutorials that i wanted to make and post on youtube about fusion.
I have to say that i really really like fusion however there are a few
quirks here and there that still make maya a little faster in creating
certain things, however fusion's boolean capabilities are the best i have
seen...i feel fusion's selections and editing in say the sculpt environment
is much slower than in maya's - not as fluid. If i select an edge vertex
for example the manipulator tool obstructs the view and placing it
where one wants to is difficult, if you want to add edge loops the options
are somewhat limited again - cant add across multiple geometries at the
same time for example...just a few thoughts and perhaps off topic...as i
still cant get why the bridge tool doesnt do what i need it to do!

Re: Bridge Tool Self intersection

TrippyLighting — Mon, 11 Dec 2017 17:44:57 GMT

T-Spline modeling is unlikely ever be as performant or fluid as in Maya.

While modeling in the T-spline environment "feels" very similar to modeling in a Sub-D modeling environment, mathematically T-Splines are a different beast.

Dub-D models are created by subdividing a mesh using a variety of subdivision algorithms with the most known probably catmull-clark. But even a subdivided mesh is still just a mesh and there are not that many intermediate steps necessary to tesselate that mesh for display in the viewport.

The basis off a T-Spline is a control mesh just as with Sub-D's but then a T-Spline has to be converted either directly into a NURBS or at least some intermediary requiring heavier math before that surface then can be tessellated for display. This poses a much heavier computational burden.

If you are comfortable in Maya I'd continue to model there and then convert the control mesh/cage as a .obj, import it into Fusion 360 and convert it into a T-Spline. I personally use Blender for this and it works perfectly. This allows me to use the full toolset Blender has to offer for Sub-D models. I am sure Maya has a vastly superior tool set for this as well. Heck, if you want parametric T-Splines, just rig the Sub-D using the animation tools and you have full parametric control of the the T-Spline.

This is one reason I've suggested to the Fusion 360 team several times to also use the AnyCAD technology for .obj meshes. Not sure they are getting it!

Re: Bridge Tool Self intersection

Anonymous — Mon, 11 Dec 2017 17:52:36 GMT

Well it feels like its still glued too much to its parents (Breps) and not
yet free to do as it pleases....

Re: Bridge Tool Self intersection

Anonymous — Tue, 12 Dec 2017 12:56:52 GMT

I still have not found a solution and I have rebuilt my form and it still intersects - I getting really frustrated....As I said I like fusion but it really feels like some areas need some work!

Re: Bridge Tool Self intersection

Anonymous — Tue, 12 Dec 2017 12:57:55 GMT

I still have not found a solution and I have rebuilt my form and it still intersects - I getting really frustrated....As I said I like fusion but it really feels like some areas need some work!

Re: Bridge Tool Self intersection

TrippyLighting — Tue, 12 Dec 2017 13:26:25 GMT

@Anonymous wrote:

but it really feels like some areas need some work!

No doubt about that!

Could you share your model ?

Re: Bridge Tool Self intersection

Anonymous — Tue, 12 Dec 2017 13:40:36 GMT

pls send me your email and I'll connect you...I found at least two bugs
today that I posted and one more later on....!
This particular problem seems to arise if the vertical pillars of the table
are too slanted and then the bridge command doesn't work...I spent all
morning testing...I am so frustrated at the moment....

Re: Bridge Tool Self intersection

TrippyLighting — Tue, 12 Dec 2017 18:42:03 GMT

I could not get the bridge tool to work on your design either. Not even with a guide curve!

You'll have to use the "Create -> Face" tool and Create 4 faces. If you want to Add edge loops, you'll have to use the subdivide tool.

Re: Bridge Tool Self intersection

Anonymous — Tue, 12 Dec 2017 18:58:36 GMT

I have tried different scenarios to pinpoint the problem. To me it seems
that if the extrusions are skewed enough then the Bridge tool does not
work. The same design when my extrusions are straight then it works. So it
seems that this is a bug that interpolates the bridge edges differently
according to some cutoff angle. It also doesn't make sense in my opinion
that one has the ability to flip the direction but not have full control to
flip the direction (Bridge tool) all the way around...!

Re: Bridge Tool Self intersection

Anonymous — Tue, 12 Dec 2017 20:51:47 GMT

I have found the solution! I will try and post a small video later on tmr....

Re: Bridge Tool Self intersection

Anonymous — Wed, 13 Dec 2017 07:13:56 GMT

I've tried a 100 times and it wont allow me to post the video..I uploaded to my a360 account copied the embeded code and this is what I get:

Your post has been changed because invalid HTML was found in the message body. The invalid HTML has been removed. Please review the message and submit the message when you are satisfied!!!!!!

and here is the html code if someone can tell why its saying there are errors:

if anyone can help I'll post it otherwise I'll just try to explain...thanks

Re: Bridge Tool Self intersection

Anonymous — Wed, 13 Dec 2017 07:14:44 GMT

it seems to be working if you click the link....

Re: Bridge Tool Self intersection

TrippyLighting — Wed, 13 Dec 2017 09:23:58 GMT

Hmm... cool. I thought I had tried that out, but maybe I do not. Glad you found a solution!