[osg-users] how to get drawing primitives

[yang zhiyuan]

Hi:
    If I load a osg model like this:
        osg::Node* node = osgDB::readNodeFile("modelname");
    If I want to get the drawing primitives(vertex coord,normal,vertex
color and so on) form the node I created,What should I do?Is there
some member functions to call to get the primitive data I wanted.
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