text: #ifndef _SpatialSign_h_
  #define _SpatialSign_h_
  //########################################################################
  //#
  //# Spatial Sign helper class
  
  /**
     The sign class is inherited by Constraint and Convex. Assignment and
     copy operators are used in both scopes.
  */
  
  class LINKAGE SpatialSign {
   public:
    enum Sign {
      nEG,			// All constraints negative or zero
      zERO,			// All constraints zero
      pOS,			// All constraints positive or zero
      mIXED			// At least one pos and one neg
    };
  
    /// Constructor
    SpatialSign(Sign sign = zERO);
  
    /// Copy constructor
    SpatialSign(const SpatialSign &);
  
    /// Assignment
    SpatialSign & operator =(const SpatialSign &);
  
    // Destructor
    virtual ~SpatialSign(){
    }
  
   public:
    /// Sign value
    Sign sign_;
  };
  
  #endif
  