/** Make selected segments curves / lines / arcs. */
void PathManipulator::setSegmentType(SegmentType type)
{
    if (_num_selected == 0) return;
    for (SubpathList::iterator i = _subpaths.begin(); i != _subpaths.end(); ++i) {
        for (NodeList::iterator j = (*i)->begin(); j != (*i)->end(); ++j) {
            NodeList::iterator k = j.next();
            if (!(k && j->selected() && k->selected())) continue;
            switch (type) {
            case SEGMENT_STRAIGHT:
                if ((j->front()->isDegenerate() && k->back()->isDegenerate())
                    && (j->arc_rx()->isDegenerate() && j->arc_ry()->isDegenerate()))
                    break;
                j->front()->move(*j);
                k->back()->move(*k);
                j->retractArcHandles();
                break;
            case SEGMENT_CUBIC_BEZIER:
                printf("To cubic bezier!\n");
                
                if (!j->front()->isDegenerate() || !k->back()->isDegenerate()){
                    break;
                }
                if (!j->arc_rx()->isDegenerate() || !j->arc_ry()->isDegenerate()){
                    // This is an elliptical arc that is being converted to a cubic bezier
                    Geom::Path cubicbezier_path = Geom::cubicbezierpath_from_sbasis(j->getEllipticalArc().toSBasis(), 0.1);
                    printf("Size of path to insert: %lu\n", cubicbezier_path.size());
                    // ======  TODO  ======
                    // How do I now get the contents of cubicbezier_path to 
                    // replace this arc segment??
                    // ====================
                    break;
                }
                
                // move both handles to 1/3 of the line
                j->front()->move(j->position() + (k->position() - j->position()) / 3);
                k->back()->move(k->position() + (j->position() - k->position()) / 3);
                j->arc_rx()->move(*j);
                j->arc_ry()->move(*j);
                j->retractArcHandles();
                break;
            case SEGMENT_ELIPTICAL_ARC:
                if (!(j->front()->isDegenerate() && k->back()->isDegenerate())){
                    j->front()->move(*j);
                    k->back()->move(*k);
                }

                if (j->arc_rx()->isDegenerate() && j->arc_ry()->isDegenerate()){
                    Geom::Point midPointOffset = ((k->position() - j->position()) / 2);
                    Geom::Point handleOrigin = j->position()+midPointOffset;

                    j->arc_rx()->setOffset(midPointOffset);
                    j->arc_ry()->setOffset(midPointOffset);
                    j->arc_rx()->move(j->position() + ((k->position() - handleOrigin) / 2));
                    j->updateArcHandleConstriants(j->arc_rx());
                }
                break;
            }
        }
    }
}