cout << "# vertex list" << endl;
for ( i = 0; i < (int)nodes.size(); ++i ) {
printf("v %.5f %.5f %.5f\n", nodes[i].x(), nodes[i].y(), nodes[i].z() );
}
cout << endl;
cout << "# vertex list" << endl;
for ( i = 0; i < (int)nodes.size(); ++i ) {
printf("v %.5f %.5f %.5f\n", nodes[i].x(), nodes[i].y(), nodes[i].z() );
}
cout << endl;