Hello Christoph,
Christoph John wrote:
> Hello,
> I am new to opensg and try to get a pointer to the vertex geometry of some
> node.
> Currently I am doing this in the following way. I am not shure if it is best
> practice. Therefore my question is if there is a more convenient way to get
> to the data.
> I need a raw float pointer to the data to setup a kdtree structure on top of
> it. Therefore I am not using iterators. My code:
>
> osg::NodeRefPtr m_npData;
> GeometryPtr pGeometry = GeometryPtr::dcast(m_npData->getCore());
> GeoPositions3f::StoredFieldType *pPoints;
>
> pPoints = GeoPositions3fPtr::
> dcast(pGeometry->getPositions())->getFieldPtr();
>
> float* pfData = &((*(pPoints->begin()))[0]);
that is basically the way to do it, yes.
However, this should give you the same and is a bit shorter to type
(untested though) ;)
float *pfData = &(pPoints->front()[0]);
Hope it helps,
Carsten
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