- double _distance(double u, double v); // Retrieve the value of the distance map at point (u,v) of the parametric space of _face
+ double (BLSURFPlugin_Attractor::*_distance)(double u, double v); // Retrieve the value of the distance map at point (u,v) of the parametric space of _face
+ double _distanceFromMap(double u, double v);
+ double _distanceFromPoint(double u, double v);