Field.h

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// $Id$
//==============================================================================
//==============================================================================
 
#ifndef _FIELD_H
#define _FIELD_H
 
#include "MatVec.h"
#include <string>
 
class ASMbase;
class ItgPoint;
class Vec4;
 
 
class Field
{
protected:
  explicit Field(const char* name = nullptr) { if (name) fname = name; }
 
public:
  virtual ~Field() {}
 
  static Field* create(const ASMbase* pch, const RealArray& v,
                       char basis = 1, char cmp = 1,
                       const char* name = nullptr);
 
  const char* getFieldName() const { return fname.c_str(); }
 
  // Methods to evaluate the field
  //==============================
 
  virtual double valueNode(size_t node) const = 0;
 
  virtual double valueFE(const ItgPoint& x) const = 0;
 
  virtual double valueCoor(const Vec4& x) const { return 0.0; }
 
  virtual bool valueGrid(RealArray& val, const int* npe) const { return false; }
 
  virtual bool gradFE(const ItgPoint& x, Vector& grad) const = 0;
 
  virtual bool gradCoor(const Vec4& x, Vector& grad) const { return false; }
 
  virtual bool hessianFE(const ItgPoint& x, Matrix& H) const { return false; }
 
protected:
  std::string fname; 
};
 
#endif