Anisotropic ?!!! How to get this result...

[stilgarna]

Hello,

I'm just wondering how to get this result with vray :

http://www.xsi-blog.com/archives/197


Is-it even possible with Vray ?



I think it's the solution of this thread :

http://www.chaosgroup.com/forum/phpB...ht=anisotropic


Please help !!!

I need to build those kind of shaders, and some carbon fiber for industrial visualisation and luxury watches viz :
http://img254.imageshack.us/img254/4749/cdplayer9nm.jpg

It'll be great if someone succed building a shader like that...

Best regards...

[priad]

very interesting thread !!! I'm also very curious about that!

[dimo]

Hi,

at the moment you can only use the uv channels for this.
Try this:

Use a Bend modifier on a Plane to generate a Disc and then set the UV derivation to UV. This way you get a circular UV vextors derivation.

Implementing a map for the UV derivation should be doable. We should add it to the wishlist

Best regards,

Dieter

[stilgarna]

If i understand your point dimo, it's not possible to have this kind of shader into vray ?!


Vlado... could you please add a map to vector derivation... Pleeeaaaasssseeeee...........

Best regards...

[pengo]

http://3dcenter.ru/forum/index.php?s...sotropic&st=90

try to read this old link and is helpful
bye

[stilgarna]

http://3dcenter.ru/forum/index.php?showtopic=16995&hl=anisotropic&st=90

try to read this old link and is helpful
bye

Very interesting but with this technic you can't go as far as the mental ray shader...

You can't render this correctly :



The specular change over the animation like in "reality"



Sorry my english sucks...


Best regards...

[dimo]

Hi,

Yes, you can't do this at the moment with vray the way the xsi shader does it. You can only try to create a model that has the uv the way you need it. But looking at you reference picture this would be very hard.
You should post to the wishlist.
The vrayshader is almost there. The only thing it does not do right now is to sample a bitmap at the uv coords to get a vector instead it takes the uv as the vector. I bet this could be implemented easily.

Best regards,

Dieter

[stilgarna]

Hi,

Yes, you can't do this at the moment with vray the way the xsi shader does it. You can only try to create a model that has the uv the way you need it. But looking at you reference picture this would be very hard.
You should post to the wishlist.
The vrayshader is almost there. The only thing it does not do right now is to sample a bitmap at the uv coords to get a vector instead it takes the uv as the vector. I bet this could be implemented easily.

Best regards,

Dieter

You can but... it will be very hard to get a model that does the correct specular...


I had my request to the wishlist :

http://www.chaosgroup.com/forum/phpB...ic.php?t=18837

[Clifton Santiago]

You mean I can't do this in Vray?

[jacksc02]

nice one clifton, now do it on a surface like the centre consol of that car

[stilgarna]

You mean I can't do this in Vray?

I mean you can't to this on a single plane in vray... or I don't know the way...

Best regards...

[Clifton Santiago]

uh, I don't have time right now. The "correct" way to do what you're asking would be to take the top faces off my chamfered cylinders, create a more extensive array, and conform them to the shape of the dash (console). Or, the quick way would be to array a bunch more of the cylinders, render, and use as an image map on the console.

[jacksc02]

i am ashamed to say this but maxwells implementation of this type of shader is quite nice

[Clifton Santiago]

@stilgarna:

yeah, the trick is the geometry. I've always found chamfered cylinders with a minimal chamfer work well. The material is just a basic vray stainless (black diffuse, white reflect w/fresnel unlocked at 8 IOR and 0.6 glossiness w/24 subdivs. Anisotropy at -0.6 and a radially blurred noise map for the "brushed" look. I forgot to make it Ward though...).

[dimo]

yes the cylinder work like a bended plane, but it would really be easier if you could just use a map for this instead of remodeling.

Dieter