1 | /*
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2 | * VectorInterface.hpp
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3 | *
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4 | * Created on: Jul 29, 2010
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5 | * Author: heber
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6 | */
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7 |
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8 | #ifndef VECTORINTERFACE_HPP_
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9 | #define VECTORINTERFACE_HPP_
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10 |
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11 | // include config.h
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12 | #ifdef HAVE_CONFIG_H
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13 | #include <config.h>
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14 | #endif
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15 |
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16 |
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17 | #include <cstring>
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18 | #include <iostream>
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19 |
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20 | class Vector;
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21 |
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22 | /** Contains all functions of the class Vector as virtual definitions, to give any
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23 | * class derived from it the interface of a Vector, i.e. Vector-like abilities
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24 | * (i.e. the scaffold design pattern).
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25 | */
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26 | class VectorInterface {
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27 | public:
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28 |
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29 | // Accessors ussually come in pairs... and sometimes even more than that
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30 | virtual const double& operator[](size_t i) const = 0;
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31 | virtual const double& at(size_t i) const = 0;
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32 | virtual void set(size_t i, const double value) = 0;
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33 | virtual const Vector& getPosition() const = 0;
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34 |
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35 | // Assignment operator
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36 | virtual void setPosition(const Vector& _vector) = 0;
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37 |
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38 | // operators for mathematical operations
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39 | virtual const VectorInterface& operator+=(const Vector& b) = 0;
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40 | virtual const VectorInterface& operator-=(const Vector& b) = 0;
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41 | virtual Vector const operator+(const Vector& b) const = 0;
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42 | virtual Vector const operator-(const Vector& b) const = 0;
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43 |
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44 | virtual void Zero() = 0;
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45 | virtual void One(const double one) = 0;
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46 | virtual void LinearCombinationOfVectors(const Vector &x1, const Vector &x2, const Vector &x3, const double * const factors) = 0;
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47 |
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48 | virtual double distance(const Vector &point) const = 0;
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49 | virtual double DistanceSquared(const Vector &y) const = 0;
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50 | virtual double distance(const VectorInterface &_atom) const = 0;
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51 | virtual double DistanceSquared(const VectorInterface &_atom) const = 0;
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52 |
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53 | virtual void ScaleAll(const double *factor) = 0;
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54 | virtual void ScaleAll(const Vector &factor) = 0;
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55 | virtual void Scale(const double factor) = 0;
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56 |
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57 | virtual std::ostream & operator << (std::ostream &ost) const = 0;
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58 |
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59 | protected:
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60 | /** Constructor and destructor are protected as VectorInterface should never
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61 | * be instantiated by itself but only as a derived class.
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62 | */
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63 | VectorInterface();
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64 | ~VectorInterface();
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65 | };
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66 |
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67 | #endif /* VECTORINTERFACE_HPP_ */
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