We do not intend to embarrass anyone. However, some users may only be able to use XNurbs for some trivial cases, e.g., filling some simple holes. So we asked Vladimir Aleksic, an experienced designer, to develop tutorials and demos for XNurbs.
The following videos show how XNurbs creates surfaces. While the videos only demonstrate the most basic operation for XNurbs, once you understand how to operation XNurbs, then you can use XNurbs in thousands of different operations and XNurbs generates all surfaces in the same way: users just select curves or points, XNurbs will generate the smoothest NURBS surfaces that satisfy all the inputted constraints. Notice the surface quality generated by XNurbs.
Once users figure out how to setup the constraints, they will see the real applications of XNurbs.
That appears to be correct. Analysis of the original pipe model shows that the brep edge normal deviations are quite high (above 0.5 degree) which is not a good starting point. Despite of that bad starting point, the 2 surfaces added by XNurbs are having acceptable edge normal deviation, below 0.2 degree.
@Stratosfear, iâve had problems with my analysis tool too as the model was in meters. After adjusting the units to mm, i was able to analyze. Maybe this is the reason VSR fails too ?
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Yes, but you have to agree, only a few users would think that the checkbox unter Topology would affect items listed under constraints without clicking on it. It is not a common UI style. It just stands like an option, not a constraint property. Therefore i suggested above DataGridView style UI, which also clears up the list under Contraints and makes room for additional, new future options
You probably had no time yet to play with Rhinoâs analysis tools, designers often analyze visually compared to numeric eg. using _Emap to evaluate surface continuity. I agree that Rhinos _Zebra` is less useful because you cannot rotate the stripe direction. But doesnât this leave room to enhance XNurbs and provide some new features to analyze during the preview ?
You might provide that with your preview material, for the userâs convenience.
No, Rhinoâs success is based on userâs feedback. Please jump on the train and see the suggestions not as a critique but as a wish for further improvement.
Conspiracy theories can be both interesting and/or maddening, as they often stem from some fact(s) combined with conjecture, mere speculation, filtered through a lens of potentially related or unrelated historical ancillary evidence. They are either fleshed-out and strengthened over time, or totally debunked via further input and evidence.
Consider:
XNurbs unusually shadowy status, personnel, available information, etc.
XNurbs front manâs now infamous tone. Authoritarian in nature? Simply an individual or cultural phenomenon, or the unavoidable foible of a product of state apparatuses?
XNurbs potential opportunity to embed into leading CAD seat count products - e.g., Solidworks, Rhino, and historical espionage. If state sponsored, oneâs commercial virus protection may be inadequate, requiring professional forensic investigation to uncover mechanisms.
I think the tone of the discussion is drifting a little bit into unconstructive territory.
Sure, it feels like the @XNurbs representative frequently has an irritating attitude (especially the habit to assume from the beginning that users are too ignorant to use the software. This consistently happens in email conversations too), but who knows what the reason for this is.
It might be a misunderstanding due to cultural differences or for whatever other reason we canât imagine.
Why donât we just assume they are acting in good faith and only happen to fail to communicate effectively?
The software is potentially very, very useful.
It is not the miraculous âresolve-all-surfacing-problemsâ CAD wonder weapon they are selling it for, but it has unique qualities that easily resolve some situations that would require hours of modeling in traditional modelling style.
I already have used XNurbs in production work and I canât wait to buy a license.
by the way @XNurbs: when will the software be available? -
So users: just imagine some thick non native speaker accent when you read @XNurbs posts, so it will be easier to forgive the condescending tone and imagine they mean no harm
And @XNurbs: try to understand that a lot of users that are interested in your software are just as capable designers and modellers as @Vladimir_Aleksic and many of them, being architects, engineers, industrial designers etc. have quite a good understanding of technical problems in general.
And remember that what you call âtrivial cases of filling holesâ are often the most demanding and challenging problems in surfacing: resolving the tertiary surfaces in complex modeling topologies.
@XNurbs can you please take a look at the attached file and give some advise? I am able to create a satisfying result, although it is a bit against the advise as shown in the manual.
thanks, but is there any other way to figure out /solve these issues? I donât have VSR plugin. Would be nice if XNurbs could indicate where the issues are. @clement do you plan on sharing/releasing your plugin? I think the issues came from going back and forward between SW and Rhino, but not sure.
Could you elaborate on the nature of the ânormal problemâ?
Are you referring to the different UV directions between surfaces?
When I check @Gijs 's example file the surface normals are perfectly fine.
There are some inconsistencies in the uv directions which can be manually fixed in Rhino, but this doesnât seem to have any influence whatsoever on if or how XNurbs works.
By the way, this case is a perfect example that XNurbs sometimes behaves inconsistently (as I reported via email, but having difficulty to supply a repeatable example):
depending on the sequence of selection the same combination of boundary conditions and slider adjustments may in one particular case succeed, while in virtually all others it leads to no surface.
Two exactly identical combination of boundary conditions and adjustments, two different results.
Sometimes jigglig back and forth with for instance the"relax precision" slider can make a surface magically appear.
