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View Full Version : "Subaru" tutorial - NURBS surf. attaching problem

diakonas
09-24-2003, 10:23 PM
HI all!

Im following Michael Thomsonīs Subaru NURBS modeling tutorial and I stopped due one problem.

Im in phase of creating madguard now and I cant attach two surfaces together.

As shown on figure 1, Im trying to attach bottom and upper surfaces. (spoiler is hidden for better view)

http://www.cute-bunny.com/fig1.gif

In order to precede my known problem (I tried it several times), I tryed get the same position of isoparms of bottom part tocorrespond to upper partīs isoparms.(figure 2)

http://www.cute-bunny.com/fig2.gif

I stitch two surfaces and then I attach them together and here is the result. I tryied several different settings, but I always get the same result.

http://www.cute-bunny.com/fig3.gif

What Im doing in wrong way? Did I miss something?

Thanks for any help and advices.

P.S. - Im new in NURBS modeling, so mistake is, Im trying for fist time this difficult tutorial without having any advanced NURBS modeling skills... :(

- diak
Zappa
09-24-2003, 11:11 PM
Hey!diakonas,

Try rebuilding your surfaces before attaching.

Cheers
lostpencil
09-24-2003, 11:15 PM
Good to rebuild... also, when you do the attach try 'blend' instead of connect...
stallion151
09-25-2003, 02:36 AM
what you need to know about rebuilding is in the attribute editor.

i think its in the shape node, there is a min and max U & V there you need to match the surface you are attaching to. it should be at the very top of the AE.
PureFire
09-25-2003, 05:07 AM
Ive attempted this tutorial myself and got stuck on this very same part. I still havent finished it yet :P

However what you need to do is go to the attribute editor, first select one piece say the top one and look at the numbers in U and V. Both pieces you are joining need to be of equal value in the same direction.

My guess is, even though you see the same number of isoparms there might be ones that you cant see which is causing the twisting. To fix this you need to rebuild one side to match the other.
diakonas
09-25-2003, 09:54 PM
Thanks for advices.

I did rebuild surface, so both has the same value in U and V, but I always get bad result. I also tryed almost all posible setting during attaching, but without any change in result.

Finaly I did it this way:

Attach surface with distortion (as you can see above on figure 3)
Then rebuild the result surface to has only a few UVs and so make hand-repairing possible.
Pull and push surfaceīs points to clear surface.
Finaly rebuilt it back to have more UVs and adjust curvature and details a bit...

I know - pretty weird way, but only working for me...

(sorry for bad English)

Thanks anyway, diak
stallion151
09-26-2003, 12:34 AM
on your surfaces right click and check your hulls, they will most likely be too far over and is whats likely causing your strectching.
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