How to transform individual points in GU_Detail

[wandersonp]

Hey guys, how can I transform individual points in gdp

 

im using that fragment, but is deprecated in H13

 

xform.translate(0.0, 1.0, 0.0);

position *= xform;

gdp->points()[0]->setPos3(position);

 

 

[Stalkerx777]

first, get an attribute handler:

GA_RWHandleV3    ph(gdp->getP());

then iterate on points like this:

GA_FOR_ALL_PTOFF(gdp, ptoff)
{
    UT_Vector3 newpos = ph.get(ptoff) * matrix;
    ph.set(ptoff, newpos);
}

Edited September 15, 2014 by Stalkerx777

[wandersonp]

Thanks a lot Alexey. thats were very helpful

[edward]

For positions, one can just use the getPos3() and setPos3() methods without need an attribute handler because there's already one built-in. So the simplest code would be:

UT_Vector3 pos;
GA_Offset ptoff = gdp->pointOffset(0); // offset to first point
pos = gdp->getPos3(ptoff);
xform.translate(0.0, 1.0, 0.0);
pos *= xform;
gdp->setPos3(ptoff, pos);

[edward]

PS. The porting guide has lots of examples http://www.sidefx.com/docs/hdk13.0/_h_d_k__g_a__porting.html

[wandersonp]

Thanks a lot edward