new kind of fallof - needed :)

[themaxxer]

I want to make a carpet and the carpet looks different from each side.

see attachment:



let's say from viewing point one I want to see texture "A"
...and from viewing point 2 I want to see texture "B"

is this possible? I have tried the falloff map, but with no success. It seems we need a new type of map, or am I wrong.
I run into this problem all the time. so much materials (in general with "hair") reacts like that and it would be great to have "fake" map for that.

best regrads
themaxxer

[add101]

Is this effect based on something in real life? Is it an actual carpet that does that? or just the effect of the lighting?
Having lighting setup in a specific way, or having different things to reflect on each side would make it different when viewed from different sides, but I'm not sure what effect you're trying to achieve. Do you actually want different diffuse colours/maps? are they totally different colours?

If it's an effect that's not reproducible with a real carpet or material maybe you could use scene states and apply 2 different textures?

[joconnell]

Hmm - It's almost as if you need to use an expression to blend the textures based on where the camera is. Are you talking about using a flat surface for the carpet or something with geometry?

[Dariusz Makowski (Dadal)]

Soo u want to see one material from 1 angle and another from second andgle... Interesting challenge !

And I have no idea how to go around it lol o.o

[PIXELBOX_SRO]

perhaps elaborating with this could make some similar results

http://www.evermotion.org/vbulletin/...ad.php?t=39353

[themaxxer]

thanks to all of you for your thoughts.

It's a bit complicated to explain, but DADAL is right.

the effect is most visible in materials with very short hair like velvet for example. If you brush over the material then this part of the "hairs" shows in this direction but the other parts looks in the other. it gives a patchy look.
with a carpet it's the same if you walk over it. is it clear what I want to achieve?

maybe I am complicating things and it's possible yet. I saw some really great renderings from russian artists where similar effects were done.

best regards and A HAPPY NEW YEAR!
themaxxer

[Javadevil]

You can do this by using the falloff in the reflection slot and adjusting the falloffs colours and the curve.

cheers

[glyph]

is there no solution in the car paints category ?
e.g where you have two tone paints and car looks purple from one angle and blue from another - must be same solution and I thought I'd seen that somewhere..
just needs tieing to object xyz instead of camera orientation (somehow)!

[Dariusz Makowski (Dadal)]

In car paints U use fallof map. But its based on camera position not object position - or other way around- no tsure hyyy...

[instinct]

I am still not sure i understand what you are aiming for. The description for velvet with differently orientated hair should be rather easy to achieve by mapping anisotropy no ? Regards,
Thorsten

[glyph]

@instinct:

but surely that gives the effect that changes on the edges.. so a velvet sphere would go to a different colour at the edges of the sphere - but the material Maxxer needs, goes orange on one half of sphere and sky blue pink on other half (I exaggerate)
.. hmm, there is that Max blend material bottom/top - can that be used as the controller for two sub mats?

[Dariusz Makowski (Dadal)]

Yea u can use it in Vrayblend material...

[instinct]

@glyph : Well that would be a standard falloff no ? But i was referring to mapping the anisotropy direction. But a Top bottom ? The falloff can do that too. Can someone post an image of the desired effect please?

Regards,
Thorsten

[Javadevil]

Here's my effort, I've mapped the falloff using blend material.
Falloff set to Fresnel and World X Axis.
This still isn't exactly what your after since it only works to 0-90 degrees and once its hits passed 90 it goes back to 0.


http://dl.dropbox.com/u/3431029/vray/falloff_vray.max

[tammo]

you can do that with camera projection. place two opposing projectors and link them to the object.
The same procedure is used for the "blended box mapping" if you want to google a tutorial.