Easy and generic way of copying an attribute into another

[lisux]

Let's say I have two attributes, P and P1.

P is the usual position attribute and P1 is a clone of the former one. So I do my stuff on P1 and I want to copy them back to P. Is there any easy way in the HDK to do this?

At the moment I am just doing a loop through all the point, initiate the handlers for the attributes and doing the get/set to copy values from one to the other.

But I was wondering if there is a more general solution, something like passing two GA_Attribute*, and copy one into another no matter the attribute type.

Thanks

Edited May 2, 2014 by lisux

[graham]

You can use GA_AIFCopyData to do this. It should properly share the data since it's basically the same data referenced by 2 names.  Something like this (I think).

 

const GA_AIFCopyData        *copy;
GA_Attribute *pattr, *p1attr;
 
// Attach attrs
 
copy = p1attr->getAIFCopyData();
copy->copy(*pattr, gdp->getPointRange(), *p1attr, gdp->getPointRange());

[lisux]

Cool, thanks Graham I'll give it a try.