Hi Niko,

> In Rhino, comparing the wireframes side by side I can also see
> how much cleaner the rhino solution is. IMO the sharp edges still
> show as expected and the surface is smooth where its suppose
> to be. I cannot imagine an example where the MOI solution would
> be more favorable...

I've attached here a simple example where the Rhino solution is not favorable, if you select all the curves and run Network MoI respects the creases and generates the proper output:



Take particular note of the corner areas here:





Now load the 3DM file into Rhino and construct the network there by selecting all the curves and running NetworkSrf. If you examine the same corner areas:





You can see there where the network does not adhere to the corner shape, it makes a smooth surface through there instead of actually coming to a sharp corner. That means that for example if you tried to extrude the bottom shape downwards and then join the extrusion and the upper part, they won't join together properly because the top part kind of bulges away from the sharp corner.

You get similar problems in Rhino trying to use any kind of creased curve to build a big network.

- Michael

Because I love MOI so much that I want it to be my exclusive nurbs modeler .

I don't know what wiggling is, but will that particular network solve closer to Rhino after you work on what you said?

Thanx

Hi niko, attached here are few other examples to help explain the problem with just trying to ignore creases, try loading these 3DM files into MoI and into Rhino and do NetworkSrf in each.

In MoI you get this result:





And in Rhino take a look at what happens to the corner areas:






Anyway, I hope that gives you some better idea about that issue.


- Michael

Hi Niko,

> I don't know what wiggling is, but will that particular
> network solve closer to Rhino after you work on what
> you said?

I hope so, but it's hard to know for sure until after it's actually done.

You also might try using MoI v2 for this one instead of the v3 beta - one change in v3 is that it uses a tighter fitting tolerance for rebuilding the curves, but that can have some side effects like this.

That's another area that I want to work on during v3 - to be able to have a tighter fitting tolerance only for the outside curves of the network that might need to be joined to other things, and a slightly looser tolerance (which makes a lighter density surface) for the internal curves.

But anyway if you try it in MoI v2 you should probably see a lighter surface generated.

- Michael

Yes it is lighter and i much much prefer it over v3, but it still generates non-uniform spans and still looks pinched where the surfaces come together . Hopefully your solution will work for V3....