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Applying material to one side of a loft nurb and not the other

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Scott Green
Applying material to one side of a loft nurb and not the other
on Oct 20, 2011 at 3:50:33 pm

Hello,

So, I've made this road using 2 splines and a loft nurb. A camera follows the road.

What I want to do is just be able to see the one side of the road when rendered. For example, the background and the underside of the road will be black (invisible), and only the top surface of the road will be white (visible).



How can I achieve this? I'm guessing turn it to an editable object, select all the faces on one side and apply a material. Then select all the other faces and add another material to them. But that sounds tricky, and frustrating even thinking about it!

I really do love good design - http://www.splurj.com


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randy johnson
Re: Applying material to one side of a loft nurb and not the other
on Oct 20, 2011 at 4:09:58 pm

Depends how you set it up. If you are lucky C1 will be one side and C2 is the other. (those go in the selection of the texture.)

If you are unlucky, Use a gradient with your colors in it with no ramping you do this by opening the gradient up and swapping the knot type from smooth knot to NONE. then its just aligning it.


/randy


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Scott Green
Re: Applying material to one side of a loft nurb and not the other
on Oct 21, 2011 at 8:27:14 am

What is C1 and C2?

I really do love good design - http://www.splurj.com


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randy johnson
Re: Applying material to one side of a loft nurb and not the other
on Oct 21, 2011 at 8:33:45 am

They are the CAPS on the loft nurds object.
Drop a texture on it and in the material:tag:selection write C1 and see where the texture ends up.

this explained well in the help under nurbs
/Randy


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Brian Jones
Re: Applying material to one side of a loft nurb and not the other
on Oct 20, 2011 at 7:35:03 pm

you can also use two textures one to go on the Front and one on the Back (Texture tag/Tag/Side settings)


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Scott Green
Re: Applying material to one side of a loft nurb and not the other
on Oct 21, 2011 at 9:07:09 am

Sorted!

With the coloured material applied to the object select the material in the object panel and choose 'Side > Back'

Apply the second material to the same object and choose 'Side > Front'

..or vice versa.

Thanks guys.



I really do love good design - http://www.splurj.com


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Scott Green
Re: Applying material to one side of a loft nurb and not the other
on Oct 21, 2011 at 9:21:01 am

I might have been better duplicating the nurbs and then extending them out and colouring them black as I'm going to have to give the impression of hills anyway. Oh well, this'll come in handy anyway I'm sure :)

I really do love good design - http://www.splurj.com


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