BasisFunctionVals.h

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// $Id$
//==============================================================================
//==============================================================================
 
#ifndef _BASIS_FUNCTION_VALS_H
#define _BASIS_FUNCTION_VALS_H
 
#include "MatVec.h"
 
 
struct BasisFunctionVals
{
  Vector     N;    
  Matrix    dNdu;  
  Matrix3D d2Ndu2; 
  Matrix4D d3Ndu3; 
};
 
 
using BasisValuesPtrs = std::vector<const BasisFunctionVals*>;
 
 
class BasisValues : public std::vector<BasisFunctionVals>
{
public:
  explicit BasisValues(size_t size) : std::vector<BasisFunctionVals>(size)
  {
    pointers.reserve(this->size());
    for (const BasisFunctionVals& val : *this)
      pointers.push_back(&val);
  }
 
  ~BasisValues()
  {
    this->clear();
  }
 
  void clear() noexcept
  {
    this->std::vector<BasisFunctionVals>::clear();
    pointers.clear();
  }
 
  void push_back(const BasisFunctionVals& v)
  {
    this->std::vector<BasisFunctionVals>::push_back(v);
    pointers.push_back(&this->back());
  }
 
  void push_back(BasisFunctionVals&& v)
  {
    this->std::vector<BasisFunctionVals>::push_back(v);
    pointers.push_back(&this->back());
  }
 
  operator const BasisValuesPtrs& () const { return pointers; }
 
private:
  BasisValuesPtrs pointers; 
};
 
#endif