1 | #ifndef __XIOS_CSpatialTransformFilter__ |
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2 | #define __XIOS_CSpatialTransformFilter__ |
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3 | |
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4 | #include "filter.hpp" |
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5 | |
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6 | namespace xios |
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7 | { |
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8 | class CGrid; |
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9 | class CGridTransformation; |
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10 | class CSpatialTransformFilterEngine; |
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11 | |
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12 | /*! |
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13 | * A generic filter with multiple input slots wrapping any type of spatial transformations. |
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14 | */ |
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15 | class CSpatialTransformFilter : public CFilter |
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16 | { |
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17 | public: |
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18 | /*! |
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19 | * Constructs a filter wrapping the specified spatial transformation. |
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20 | * |
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21 | * \param gc the associated garbage collector |
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22 | * \param engine the engine defining the spatial transformation |
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23 | * \param outputValue default value of output pin |
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24 | * \param [in] inputSlotsCount number of input, by default there is only one for field src |
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25 | */ |
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26 | CSpatialTransformFilter(CGarbageCollector& gc, CSpatialTransformFilterEngine* engine, double outputValue, size_t inputSlotsCount = 1); |
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27 | |
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28 | /*! |
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29 | * Builds the filter graph needed to transform the specified source grid into the specified destination grid. |
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30 | * |
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31 | * \param gc the associated garbage collector |
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32 | * \param srcGrid the source grid |
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33 | * \param destGrid the destination grid |
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34 | * \param hasMissingValue whether field source has missing value |
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35 | * \param defaultValue default value |
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36 | * \return the first and the last filters of the filter graph |
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37 | */ |
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38 | static std::pair<boost::shared_ptr<CSpatialTransformFilter>, boost::shared_ptr<CSpatialTransformFilter> > |
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39 | buildFilterGraph(CGarbageCollector& gc, CGrid* srcGrid, CGrid* destGrid, bool hasMissingValue, double defaultValue); |
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40 | |
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41 | protected: |
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42 | /*! |
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43 | Overriding this function to process transformations with auxillary inputs |
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44 | */ |
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45 | void virtual onInputReady(std::vector<CDataPacketPtr> data); |
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46 | |
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47 | protected: |
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48 | //! Default value of output pin |
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49 | double outputDefaultValue; |
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50 | }; // class CSpatialTransformFilter |
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51 | |
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52 | /*! |
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53 | * A generic filter engine wrapping a grid transformation. |
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54 | */ |
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55 | class CSpatialTransformFilterEngine : public IFilterEngine |
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56 | { |
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57 | public: |
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58 | /*! |
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59 | * Returns the engine wrapping the specified grid transformation. |
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60 | * If the engine already exists it is reused, otherwise it is created. |
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61 | * |
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62 | * \param gridTransformation the grid transformation the engine will use |
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63 | * \return the engine wrapping the specified grid transformation |
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64 | */ |
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65 | static CSpatialTransformFilterEngine* get(CGridTransformation* gridTransformation); |
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66 | |
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67 | /*! |
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68 | * Applies the grid transformation to the input data and returns the result. |
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69 | * |
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70 | * \param data a vector of packets corresponding to each slot (one in this case) |
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71 | * \param [in] defaultValue default value of output data |
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72 | * \return the result of the grid transformation |
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73 | */ |
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74 | CDataPacketPtr applyFilter(std::vector<CDataPacketPtr> data, double defaultValue = 0); |
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75 | |
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76 | /*! |
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77 | * Applies the grid transformation to the input data and returns the result. |
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78 | * |
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79 | * \param data a vector of packets corresponding to each slot (one in this case) |
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80 | * \return the result of the grid transformation |
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81 | */ |
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82 | CDataPacketPtr virtual apply(std::vector<CDataPacketPtr> data); |
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83 | |
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84 | |
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85 | |
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86 | protected: |
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87 | /*! |
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88 | * Constructs a filter engine wrapping the specified grid transformation. |
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89 | * |
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90 | * \param gridTransformation the grid transformation the engine will use |
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91 | */ |
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92 | CSpatialTransformFilterEngine(CGridTransformation* gridTransformation); |
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93 | |
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94 | /*! |
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95 | * Applies the grid transformation to the input data and returns the result. |
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96 | * This helper function handles all the communications. |
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97 | * |
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98 | * \param dataSrc the source data |
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99 | * \param dataDest the resulting transformed data |
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100 | */ |
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101 | void apply(const CArray<double, 1>& dataSrc, CArray<double,1>& dataDest); |
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102 | |
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103 | CGridTransformation* gridTransformation; //!< The grid transformation used by the engine |
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104 | |
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105 | //! The allocated engines |
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106 | static std::map<CGridTransformation*, boost::shared_ptr<CSpatialTransformFilterEngine> > engines; |
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107 | }; // class CSpatialTransformFilterEngine |
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108 | } // namespace xios |
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109 | |
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110 | #endif //__XIOS_CSpatialTransformFilter__ |
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