Can Someone please help me

[eDesign]

Or at least refer me to some tutorials that deal with the subject matter.

My whole problem is texture mapping. I dont know which one takes precedent over what. Does rhino's U V values take precedent over Vrays? Do they both have to be the same? I'm Having a very hard time with this so if someone can show me the path through this foggy terrain I will be very greatful. I'v also looked at the tutorial you guys have on your site about Texture Mapping (the example with the wood and water) - The narrator just applies the material and everything is already setup ready to go. The harsh reality of it all is, thats never once happened with me, yet i dont know what settings to use to tweak it. In any case, any help is very appreciated, the more detailed the better, I'm pretty new to all this.

I'v attached an image to familiarize you guys with what im talking about.

Again, Thank you for your help

[gasparem16]

Re: Can Someone please help me

Hello!:

Well texture mapping in rhino gives quite a headache, but you can apply as many mapping channels you want by clicking in object properties and under the firs menu you have

1)object
2)Material
3)Texture Mapping

Click on texture mapping, then check Show advanced UI, then click add.

Under General select the type of projection ( the default is surface) click and select the type that best suits your need, click show mapping, and then you will see the mapping widget in the viewport, scale or rotate it until you get the dessired effect.
Good luck!
Emanuel

[eDesign]

Re: Can Someone please help me

Thank you for your reply. However, I have fidgeted around with the texture mapping features of rhino. VRAY has its own feature for U and V values and I get really mixed up because sometimes i render and the textures will be messed up, but when i render with rhino's default renderer the textures look fine. I was just wondering which takes precedent over which. Do i have to tweak the texture mapping feature through vray and not touch Rhino's U and V values (as well as rotation), do they have to be all the same numbers (for example if rhino's U and V values are 6, do i have to go in and change that materials U and V values in vray to 6 as well), or do i not even mess with Vray and just texture map only in rhino and VRAY will automatically know whats going? I guess that is whats confusing me the most.

[gasparem16]

Re: Can Someone please help me

well... what i usually do is leave the vray tile settings to u=1 and v=1,and apply no rotation to the map. That way what I get in the viewport is what I get when I render in Vray. to adjust size I scale the mapping, to change orientation I rotate the mapping.

In the first Image you can see that what you get in the viewport, you get in vray, the mapping widget is at the edges of the box, so the texture repeats only one time horizontal and one time vertical



Then I leave the mapping as it was, and the viewport doesn't change, but as I set u=2 and v=2 in the material editor I get the texture repeated two times vertical and two times horizontal in vray


And about you answer, these settings do not override each other, they are aditive, in the last image I scaled the mapping widget by 0.5, and then I set u=2 and v=2 in the material editor, so this time my texture repeats four times horizontal and four times vertical (two times because of the material editor setting and two times because now the mapping widget is half the length of the box)



So that's why I set the mapping widget to get the dessired effect in the rhino viewport, otherwise you will have to render many times until you get the result you are loking for.
I hope this helps you.
Good luck.
Emanuel

[frip51]

Re: Can Someone please help me

On the other hand, adjusting the values in Material Editor can be quite helpful if you want to create patterns (for example using the Noise, Checker, Grid, Cloth or Bulge types) or if you're setting up a vismat for your custom material library.