Hello Andy,
Andy Bartz wrote:
> Right now I'm doing it like this:
[SNIP]
> list<osg::Pnt3f>::iterator listIt; //Iterator for a list which is filled
> with the positions of the clicked triangles
you might want to use a list of triangle indices for use with a
TriangleIterator, that way you can also copy the correct normals for
your triangles - instead of using Vec3f(0.f, 0.f, 1.f), which will
result in incorrect lighting for the selected triangles (unless of
course the material used for selected triangles is unlit, but then you
would not need any normals at all).
> osg::GeoPositions3fPtr pos = osg::GeoPositions3f::create();
> osg::GeoColors3fPtr clrs = osg::GeoColors3f::create();
> osg::GeoNormals3fPtr normals = osg::GeoNormals3f::create();
>
> for (listIt=hitTrianglePositions.begin();
> listIt!=hitTrianglePositions.end(); ++listIt)
> {
> osg::beginEditCP(pos, osg::GeoPositions3f::GeoPropDataFieldMask);
> pos->addValue(*listIt);
> osg::endEditCP(pos, osg::GeoPositions3f::GeoPropDataFieldMask);
>
> osg::beginEditCP(clrs, osg::GeoColors3f::GeoPropDataFieldMask);
> clrs->addValue(osg::Color3f(255,215,0));
> osg::endEditCP(clrs, osg::GeoColors3f::GeoPropDataFieldMask);
>
> osg::beginEditCP(normals, osg::GeoNormals3f::GeoPropDataFieldMask);
> normals->addValue(osg::Vec3f(0,0,1));
> osg::endEditCP(normals, osg::GeoNormals3f::GeoPropDataFieldMask);
> }
you can nest beginEditCP/endEditCP calls, so it would be better
(performance wise) to move those outside the loop.
[SNIP] - the rest looks ok to me, so updating the volume should fix it.
> btw, is there another way to delete/destroy a node than subRefCP(node)?
no, that would pretty much defeat the purpose of reference counting
(OpenSG 1.x is admittedly a bit inconsistent in its ref counting, but
still).
Cheers,
Carsten
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