Can I get a list of attributes in VEX or VOPs?

I have an attribute wrangle node that is making new geometry and none of those points inherit the attributes from the point that is being processed when that geometry is being created.

I'd like to loop over the attributes on the source geometry and copy them to the new points, but I can't find a vex function to provides a list of attributes or a way to get attributes by something other than its name. I was thinking I could do an import attribute by index (if such a thing existed) until it started failing. But I don't see how to do that either.

Thanks!

A way to sidestep your problem would be to have an id attribute on your geometry which you could copy over to your new points, and after your wrangle have an AttribCopy SOP with Attribute to Match set to “id” and Attribute to Copy set to “*”.

Ben Andersen
Can I get a list of attributes in VEX or VOPs?

I have an attribute wrangle node that is making new geometry and none of those points inherit the attributes from the point that is being processed when that geometry is being created.

I'd like to loop over the attributes on the source geometry and copy them to the new points, but I can't find a vex function to provides a list of attributes or a way to get attributes by something other than its name. I was thinking I could do an import attribute by index (if such a thing existed) until it started failing. But I don't see how to do that either.

Thanks!

There are detail intrinsic attributes: “pointattributes”, “vertexattributes”, “primitiveattributes” and “detailattributes”.

However, in VEX it seems that you can only get the first entry from the attribute, so I'm not sure that you can do this in a wrangler. You might be able to use a Python SOP to build a string which is handled by the wrangler (you can access intrinsics in Python too).

Ah, okay. That attribcopy work around will do fine for now.

Thanks! It would be cool to be able to loop through a list of them in VEX in the future, Mark :-)

Hey Mark-

Is this still a VEX limitation? I tried a few things in my wrangle and I don't seem to be able to see any values for those magic attributes….

–jono

no limitation anymore, you can do all of them as arrays:
s@vertexattribs = detailintrinsic(0, “vertexattributes”);
s@pointattribs = detailintrinsic(0, “pointattributes”);
s@primattribs = detailintrinsic(0, “primitiveattributes”);
s@detailattribs = detailintrinsic(0, “detailattributes”);

Thank's Tomas! Since when was this possible? 15?

-b

bonsak
Thank's Tomas! Since when was this possible? 15?..

14

Thanks

-b

Just stumbled across this topic and firstly I wanted to say thanks, it saved me a load of time searching through the docs.

Secondly, just to be pedantic, the syntax should be:

What about VOPs?
Only way right now is via Inline Code VOP?

Hi,

You can use the regular Import Attribute VOPs and use this syntax as the attribute name:


For example: