v-ray decal problem in Rhino

[juancarreras]

I'm new to v-ray. I'm using Rhino and I used Flamingo previously for most of my work.

 

Basic question (or is it?)

To put it simple, how do I apply a decal to an object, say a sphere, without going through to the other side and without splitting the object in two?

 

In Flamingo I place the planar mapping widget somewhere inside the sphere and tell it to project towards the front, so the image shows up at the front of the sphere but not at the back.

But in vray I don't seem to find a way to limit the projection of the decal to only one side of the planar map so it always shows on the other side (mirrored of course)

Any ideas?

 

(BTW I'm trying to attach an image to this post but I can't do it ... I get this error beside the attachment: 500 [iOErrorEvent type=ioerror" bubbles=false bla bla error #2038]

[Corey Beaulieu]

In Max, at least, you would just un-tick the U and V "Tile" boxes of the map in the material editor and adjust the UVW gizmo to place it where you want it. I'm sure the process is very similar rhino though I cannot speak to it specifically.

[juancarreras]

Thanks Corey,

There is no U V tile boxes to tick (I can set them to 0). See links to screenshots:

http://www.juandemarias.com/images/decals.jpg

http://www.juandemarias.com/images/texture-editor.jpg

[Corey Beaulieu]

So what I was talking about was the, for Rhino, the "Repeat" values at the bottom of the menu. I think, however, that there is something else going on. The decal appears reversed on the back side of the sphere as if its projecting through it and that I have no answer for. I'd try setting the repeat to 0 fo U and V, but I don't expect it to work.

 

Sorry I couldn't be of better use.

[juancarreras]

If I make the repeat u v values zero, I get no decal shown (obviously).

What you say about the back of the sphere reversed is precisely my problem all along. The map is projected forwards and backwards in relation to the mapping orientation.

Thanks anyway