1 | // |
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2 | // C++ Interface: BufferedLinearInterpolator1D |
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3 | // |
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4 | // Description: |
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5 | // |
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6 | // |
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7 | // Author: Takeshi Nakazato <takeshi.nakazato@nao.ac.jp>, (C) 2012 |
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8 | // |
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9 | // Copyright: See COPYING file that comes with this distribution |
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10 | // |
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11 | // |
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12 | #ifndef ASAP_BUFFERED_LINEAR_INTERPOLATOR_1D_H |
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13 | #define ASAP_BUFFERED_LINEAR_INTERPOLATOR_1D_H |
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14 | |
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15 | #include "Interpolator1D.h" |
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16 | |
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17 | namespace asap { |
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18 | |
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19 | /** |
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20 | * Linear interpolation with some buffers for acceleration. |
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21 | * @author TakeshiNakazato |
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22 | */ |
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23 | template <class T, class U> |
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24 | class BufferedLinearInterpolator1D : public Interpolator1D<T, U> { |
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25 | public: |
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26 | // Default constructor. |
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27 | BufferedLinearInterpolator1D(); |
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28 | |
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29 | // Destructor. |
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30 | virtual ~BufferedLinearInterpolator1D(); |
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31 | |
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32 | // Set horizontal (x) and vertical (y) data. |
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33 | // @param[in] x pointer to horizontal data. |
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34 | // @param[in] y pointer to vertical data. |
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35 | // @param[in] n number of data. |
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36 | // @see Interpolator1D::setData() |
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37 | void setData(T *x, U *y, unsigned int n); |
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38 | |
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39 | // Set horizontal data (x). |
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40 | // @param[in] x pointer to horizontal data. |
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41 | // @param[in] n number of data. |
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42 | // @see Interpolator1D::setX() |
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43 | void setX(T *x, unsigned int n); |
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44 | |
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45 | // Perform interpolation. |
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46 | // @param[in] x horizontal location where the value is evaluated |
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47 | // by interpolation. |
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48 | // @return interpolated value at x. |
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49 | // @see Interpolator1D::interpolate() |
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50 | U interpolate(T x); |
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51 | |
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52 | private: |
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53 | // Numerical factor for linear interpolation. |
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54 | T factor_; |
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55 | |
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56 | // Previous location. |
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57 | T xold_; |
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58 | |
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59 | // Previous location as an index |
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60 | unsigned int prev_; |
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61 | |
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62 | // Boolean parameter whether buffered values are effective or not. |
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63 | bool reusable_; |
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64 | }; |
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65 | |
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66 | } |
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67 | |
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68 | #include "BufferedLinearInterpolator1D.tcc" |
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69 | |
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70 | #endif |
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