offset copied geo to points?

[Ninjakeks]

Hi,

I`m trying to create a SOP node, that basically does the same thing as the copytopoints SOP in Houdini but with a Box deformation added to it.
Now I was able to copy the detail from the second Input into the gdp, but I find myself unable to access the newly added geo to actually offset it to the corresponding point in the first input.
I want to add that I am a noobie when it comes to HDK (as you can probably see) 
and any help is much appreciated and thanks in advance.
 

OP_ERROR SOP_copyPTs::cookMySop(OP_Context &context)
{
	OP_AutoLockInputs inputs(this);

	if (inputs.lock(context) >= UT_ERROR_ABORT)
		return error();

	const GU_Detail *firstGDP = inputGeo(0, context);
	const GU_Detail *secondGDP = inputGeo(1, context);



	UT_AutoInterrupt progress("still copying...");

	duplicateSource(0, context);

	GA_RWHandleV3 Phandle(gdp->findAttribute(GA_ATTRIB_POINT, "P"));

    GA_Offset firstPToff;

	GEO_CopyMethod copymethod = GEO_COPY_ADD;


    GA_FOR_ALL_PTOFF(firstGDP, firstPToff)
    {

		if (progress.wasInterrupted())
			break;

		gdp->copy(*secondGDP, copymethod, true, false, GA_DATA_ID_CLONE);
	    UT_Vector3 Pvalue = Phandle.get(firstPToff);

    }

	Phandle.bumpDataId();


	return error();

}

i got it to work!  (propably a pretty bad way to do it but it works)
(orientation is working as well now but its not in the code down below)
I am still very interested how experienced users would have written it. :S

    GA_FOR_ALL_PTOFF(firstGDP, gridPoints)
    {
		if (progress.wasInterrupted())
			break;

		GU_Detail *newgdp = new GU_Detail();
		GA_RWHandleV3 newPhandle(newgdp->findAttribute(GA_ATTRIB_POINT, "P"));



		newgdp->copy(*secondGDP, copymethod, true, false, GA_DATA_ID_CLONE);
		GA_Offset spherePoint;

	    UT_Vector3 pointPos = Phandle.get(gridPoints);

		GA_FOR_ALL_PTOFF(newgdp, spherePoint)
		{
			UT_Vector3 spherePos = newPhandle.get(spherePoint);

			UT_Vector3 addedPos = spherePos + pointPos;

			newPhandle.set(spherePoint, addedPos);

		}
		gdp->copy(*newgdp, copymethod, true, false, GA_DATA_ID_CLONE);

    }

Edited December 30, 2018 by Ninjakeks
wrote the post at 2am and didnt frase the question right