3D texture with ramp or file, using VRay

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  04 April 2013
3D texture with ramp or file, using VRay

Hey guys,

This is probably a noobish question but I just can't figure it out..

So I want to apply a ramp to shader. I want the ramp to move around on the surface of the object when the object moves.

This works fine with the "Crater"-texture but VRay doesn't support this texture. How do I apply the same effect with a "Ramp" or "file"?

I can't create a "3d Placement"-node and simply connect it to a ramp/file. Nothing seems to work.

Thankful for any reply!
 
  04 April 2013
Do you want to animate the ramp colors? Is it that what you mean? If so, you could set keys on the position of the colors and move those.
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  04 April 2013
Sounds like you want to do a texture projection on the surface, right?
 
  04 April 2013
Originally Posted by Tobbe: Sounds like you want to do a texture projection on the surface, right?


Yeah it's more like a projection like all the 3D-textures that comes with Maya I think..
 
  04 April 2013
Originally Posted by THExDUKE: Do you want to animate the ramp colors? Is it that what you mean? If so, you could set keys on the position of the colors and move those.

Animating the ramp could work. Feels like it's a bit time consuming though.
 
  04 April 2013
In the hypershade right click on the file or ramp texture and select "Create as projection". That will give you a 3d placement node for the texture. If that's what you want.
 
  04 April 2013
Originally Posted by Tobbe: In the hypershade right click on the file or ramp texture and select "Create as projection". That will give you a 3d placement node for the texture. If that's what you want.

this doesn't work in maya 2013 (at least here) windows64. You have to go to the createNode menu to be able to do it now.
But to answer the question, yes do as Tobbe says to project your ramp.
 
  04 April 2013
Originally Posted by thematt: this doesn't work in maya 2013 (at least here) windows64. You have to go to the createNode menu to be able to do it now.
But to answer the question, yes do as Tobbe says to project your ramp.

I actually didn't know you could just right click (thanks!), anyway I did this manually before instead but it doesn't work the same way as a regular 3d-texture.
Now I'm just getting a planar projection (I have tried the other like cube,sphere as well), isn't there anyway to do this thing?

I want the same function as a "crater"-3d texture. When I move the object Or scale the 3d placement-node I want the texture to move around.
 
  04 April 2013
Hmm, try to explain a bit more what you're after... a 2d-texture is 2d, it can't act as a 3d-texture. Only 3d you get is the placement node which you can move, animate etc. Note the "wrap" attribute as well if you don't want the tiling.
 
  04 April 2013
Originally Posted by Tobbe: Hmm, try to explain a bit more what you're after... a 2d-texture is 2d, it can't act as a 3d-texture. Only 3d you get is the placement node which you can move, animate etc. Note the "wrap" attribute as well if you don't want the tiling.

Really quick answers here, appreciate it! So the thing I'm after is, I'm making soap bubbles with particles and instancer. I want the colors of the soap to animate while the bubbles are flying around.

Maybe the only thing to do is animate the ramp or noise. Just thought that there could be some easier way.
 
  04 April 2013
ok. If the crater doesn't work. Maybe you could use a 3d-noise texture and remap the output, using a ramp (pipe the output from the noise into the u or v coord of the ramp). I think you should get about the same effect. Don't know if this is the best approach for soup bubbles though. Worth a try!
 
  04 April 2013
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