#ifndef IMPLICITFUNCTION
#define IMPLICITFUNCTION

class ImplicitFunction{
public:
  virtual float value(float x, float y, float z)=0;
  virtual void gradient(float g[3], float x, float y, float z)=0;
  virtual float valueAndGradient(float g[3], float x, float y, float z)=0;
  virtual void curvatureHK(double &H, double &K, float x, float y, float z)=0;
};

#endif