Hi all
Accept my apology for such a simple question. I want to display two coincident
points at (0,0,0). I use code like this:
int main()
{
osgViewer::Viewer viewer;
osg::ref_ptr<osg::Group> root (new osg::Group);
osg::ref_ptr<osg::Geode> geode (new osg::Geode());
osg::ref_ptr<osg::Geometry> geometry (new osg::Geometry());
osg::ref_ptr<osg::Vec3Array> vertices (new osg::Vec3Array());
vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0));
vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0));
geometry->setVertexArray (vertices.get());
geometry->addPrimitiveSet(new
osg::DrawArrays(osg::PrimitiveSet::POINTS,0,vertices->size()));
osg::Point *point=new osg::Point;
point->setSize(4);
root->getOrCreateStateSet()->setAttribute(point);
geode->addDrawable (geometry.get());
root->addChild(geode.get());
viewer.setSceneData( root.get() );
return (viewer.run());
}
But it displays nothing. I think it relates to BoundingBox and culling, so what
should I do to display two coincident points at (0,0,0)? And how to do it for
just one point?
Regards, Moji
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