world position from uv texture coordinates

[Mzigaib]

How to get the world position from uv texture coordinates? Not from parametric UV.

[Macha]

This is one way with a sticky, but perhaps not what you are after.

uv.hipnc

[Mzigaib]

Thanks for the feedback.

That´s the effect I want, but with several points in the geometry level.

I could use primuv() expression to get the position from uvs but it only works with parametric ones, I want to use texture uvs.

In the file I can achieve a similar effect using a VEX similar to primuv() expression, one of the problems is that the obj must be a mesh, I want to be able to use it on a polygon object, and the points doesn't stick on it´s rest position.

uv_to_position.hipnc

[Mzigaib]

What also could help is to know how to transfer the uv parametric coordinates to uv texture coordinates.

Edited August 4, 2010 by Mzigaib

[petz]

maybe this helps

petz

uv_to_position1.hipnc

[Mzigaib]

Eita!!!!

Petz, you are the man!!! You can´t imagine how much you did helped me, again , thank you very much. This intersect VEX VOP does all that I want, amazing!

Even achieving the same effect I still wish that could be a clever way to convert the object local UV surface texture coordinates to XYZ world postion.

Anyway thank you again!

Edited August 5, 2010 by Mzigaib

[edward]

Even achieving the same effect I still wish that could be a clever way to convert the object local UV surface texture coordinates to XYZ world postion.

I don't see anything with Macha's use of the Sticky object. If you're looking for more of a SOP level point operation, you can still use the Sticky object.

eg.

[Macha]

Well, I can't compete with Petz's genius, so here is my alternative silly way of doing this.

sillyuv.hipnc

[petz]

Well, I can't compete with Petz's genius, so here is my alternative silly way of doing this.

i guess you meant this ironically but nevertheless i feel honored

cheers,

petz

[Tesla's fan]

Maybe it can help you

change_basis.hip