+ /*! Get frame's right rear axle y coordinate. */
+ double rray() const;
+
+ /*! Get frame's left rear axle point. */
+ Point lra() const;
+
+ /*! Get frame's right rear axle point. */
+ Point rra() const;
+
+ /*! Get frame's left front axle x coordinate. */
+ double lfax() const;
+
+ /*! Get frame's left front axle y coordinate. */
+ double lfay() const;
+
+ /*! Get frame's right front axle x coordinate. */
+ double rfax() const;
+
+ /*! Get frame's right front axle y coordinate. */
+ double rfay() const;
+
+ /*! Get iframe's left front axle point. */
+ Point lfa() const;
+
+ /*! Get frame's right front axle point. */
+ Point rfa() const;
+
+ /*! Get frame's center front x coordinate. */
+ double cfx() const;
+
+ /*! Get frame's center front y coordinate. */
+ double cfy() const;
+
+ /*! Get frame's center front point. */
+ Point cf() const;