Method from

ImagePlay/include/IPProcessEdge.h:44–44

    QPainterPath        shape               () const;
    void                updatePosition      ();
    IPProcessStep*      from                ()  { return _from; }
    IPProcessStep*      to                  ()  { return _to; }
    int                 indexFrom           ()  { return _indexFrom; }
    int                 indexTo             ()  { return _indexTo; }