Update Error !

[Anonymous]

Any idea ...?

[jeff_strater · Accepted solution]

This is because you have "Exact" selected as the "Insertion Mode".  You want "Simple", I think:

Jeff

[Anonymous]

But - I want Exact !
Earlier it has worked correctly
after Update it is not a functionally

[Anonymous]

with Sphere is OK

It is "Exact"

[jeff_strater]

Hi @Anonymous,

The difference between "Exact" and "Simple" for Insert Edge is that "Exact" guarantees that the geometry before and after the inserted edge is identical.  The only way to guarantee this with TSplines is to insert a lot more edges.  For "Simple", just the specified edge is inserted, but there is no guarantee that the surfaces afterwards will be the same as before.  I will check, but I don't think that this behavior has changed recently.

Jeff

[jeff_strater]

Hi @Anonymous,

I checked with the TSplines team, and they verified that this behavior has not changed in a couple of years.  I understand that the difference between the box case and the sphere case is confusing.  It has to do with some low-level math used in TSplines, that, to be honest, I don't understand, either.  It has to do with the proximity of the inserted edge to "star points" in the model.  In the box case, there are star points at each corner, which you can see if you use the "Repair Body" command:

The sphere, however, does not have any star points, which is why it works the way you expect:

Further, for the box, it's really the "distance" (in terms of number of edges) between your inserted edge and these star points that determines how much geometry is needed in exact mode to keep the shape.  If you have more faces in your box, it also works as you expected:

Hope this helps,

Jeff

[Anonymous]

Thank you for your answer. If this function works this way for years is OK,

I have no questions.

(Actually I do not have a large practice with F.)

But for me it is a bug, which makes it very difficult modeling.
For example, show the object created using the Loft and working properly.
Once again, thank you for your answer

Tomek

[Anonymous]

My problem

[xander.luciano]

Hello!

Could you possibly share the file with so we may try and reproduce the issue you are having?

Thanks,

[jeff_strater]

Hi @Anonymous, thanks for the added images. However, I don't think I completely understand the problem you are facing.  The topology that I see in this picture is what I would expect to see from "Insert Edge" near a corner point in "Exact" mode.  If you don't want these extra edges inserted, you should use "Simple" mode.  Unfortunately, there are no other choices available.

Thanks,

Jeff

[Anonymous]

" Unfortunately, there are no other choices available."

I see it

I wanted this function as in Alias. - Add edge and that's it.

The Fusion are two ways - both bad.
One - changes the geometry,  the second - adds to many walls.

The first is more work with regulation, in the second there is no control of a large number of walls

For me its a bug

Easy model - easy problem, complicated model - complicated problem.

😞

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