- bool idxLeft(int &, int &) const;
- ///
- bool idxRight(int &, int &) const;
- ///
- bool idxFirstUp(int & idx, int & pos) const;
- ///
- bool idxFirstDown(int & idx, int & pos) const;
- ///
- bool idxLastUp(int & idx, int & pos) const;
- ///
- bool idxLastDown(int & idx, int & pos) const;