void operator()( const osg::Vec3 v1, const osg::Vec3 v2, const osg::Vec3 v3, bool temp )
{
if ( v1==v2 || v1==v3 || v2==v3 )
return;
vertices->push_back( v1 ); indices->push_back( base++ );
vertices->push_back( v2 ); indices->push_back( base++ );
vertices->push_back( v3 ); indices->push_back( base++ );
}
// do nothing
void operator ()(const osg::Vec3& v1, const osg::Vec3& v2, const osg::Vec3& v3, bool treatVertexDataAsTemporary) {
_vertexes->push_back(v1);
_vertexes->push_back(v2);
_vertexes->push_back(v3);
}