Get custom prim Attribute value?

[wandersonp]

How can I get a custom prim attribute value? like this fragment of code

 

GA_RWAttributeRef prNum = gdp->findFloatTuple(GA_ATTRIB_PRIMITIVE, "prNum");

GA_RWHandleF prNumHandle(prNum.getAttribute());

 

GA_FOR_ALL_PRIMITIVES(gdp, prim)

{

    if (prNumHandle.isValid())

    {

         //here how can I get the prNum value like prNum == 12 for example?

         {

             gdp->deletePrimitive(*prim, 0);

         }

    }

}

 

Edited January 15, 2015 by Wanderson Pereira

[edward]

prNumHandle.set(prim->getMapOffset(), ... )

[wandersonp]

Thanks a lot edward, works perfectly

 

here is the complete cook function with corrections.

OP_ERROR MyClass::cookMySop(OP_Context &context)
{
	if (lockInputs(context) >= UT_ERROR_ABORT)
		return error();

	duplicateSource(0, context);
	GEO_Primitive	 *prim;
	const GA_RWAttributeRef	prNum = gdp->findFloatTuple(GA_ATTRIB_PRIMITIVE, "prNum");
	GA_RWHandleF prNumHandle(prNum);
	if (prNumHandle.isValid())
	{
		GA_FOR_ALL_PRIMITIVES(gdp, prim)
		{
			if (prNumHandle.get(prim->getMapOffset()) == 12.0)
			{
				gdp->deletePrimitive(*prim, 0);
			}
		}
	}
	unlockInputs();
	return error();
}

[Guest mantragora]

It's more straightforward if you use GA_Iterator. GA_FOR_ALL_PRIMITIVES is still using some GB compatibility and on top of it GEO, so you are losing everything that the new GA library brings to the table.

 

Also, we got OP_AutoLockInputs in H13 and H14, so instead of locking and unlocking manually, use it.

auto
Foo::cookMySop(Context& context)
-> OP_ERROR
{
    OP_AutoLockInputs autolock;   
    auto wasSuccess = autolock.lock(*this, context);
 
    if (wasSuccess < UT_ERROR_WARNING && error() < UT_ERROR_WARNING or whatever you want to test along the way )
    {
        // your code
    }
 
    return error();
}

I got one in my base class, so it's available in every method that may need it. 

Edited January 16, 2015 by mantragora

[wandersonp]

thanks mantragora