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1 | 1 | #ifndef SCIQLOP_COSINUSPROVIDER_H |
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2 | 2 | #define SCIQLOP_COSINUSPROVIDER_H |
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3 | 3 | |
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4 | 4 | #include <Data/IDataProvider.h> |
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5 | 5 | |
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6 | #include <QLoggingCategory> | |
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7 | ||
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8 | Q_DECLARE_LOGGING_CATEGORY(LOG_CosinusProvider) | |
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9 | ||
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6 | 10 | /** |
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7 | 11 | * @brief The CosinusProvider class is an example of how a data provider can generate data |
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8 | 12 | */ |
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9 | 13 | class CosinusProvider : public IDataProvider { |
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10 | 14 | public: |
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11 | 15 | /// @sa IDataProvider::retrieveData() |
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12 | 16 | std::unique_ptr<IDataSeries> |
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13 | 17 | retrieveData(const DataProviderParameters ¶meters) const override; |
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18 | ||
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19 | void requestDataLoading(const QVector<SqpDateTime> &dateTimeList) override; | |
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20 | ||
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21 | ||
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22 | private: | |
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23 | std::shared_ptr<IDataSeries> retrieveDataSeries(const SqpDateTime &dateTime); | |
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14 | 24 | }; |
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15 | 25 | |
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16 | 26 | #endif // SCIQLOP_COSINUSPROVIDER_H |
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1 | 1 | #include "CosinusProvider.h" |
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2 | 2 | |
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3 | 3 | #include <Data/DataProviderParameters.h> |
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4 | 4 | #include <Data/ScalarSeries.h> |
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5 | 5 | |
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6 | 6 | #include <cmath> |
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7 | 7 | |
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8 | Q_LOGGING_CATEGORY(LOG_CosinusProvider, "CosinusProvider") | |
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9 | ||
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8 | 10 | std::unique_ptr<IDataSeries> |
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9 | 11 | CosinusProvider::retrieveData(const DataProviderParameters ¶meters) const |
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10 | 12 | { |
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11 | 13 | auto dateTime = parameters.m_Time; |
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12 | 14 | |
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13 | 15 | // Gets the timerange from the parameters |
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14 | 16 | auto start = dateTime.m_TStart; |
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15 | 17 | auto end = dateTime.m_TEnd; |
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16 | 18 | |
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17 | 19 | // We assure that timerange is valid |
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18 | 20 | if (end < start) { |
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19 | 21 | std::swap(start, end); |
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20 | 22 | } |
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21 | 23 | |
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22 | 24 | // Generates scalar series containing cosinus values (one value per second) |
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23 | 25 | auto scalarSeries |
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24 | 26 | = std::make_unique<ScalarSeries>(end - start, Unit{QStringLiteral("t"), true}, Unit{}); |
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25 | 27 | |
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26 | 28 | auto dataIndex = 0; |
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27 | 29 | for (auto time = start; time < end; ++time, ++dataIndex) { |
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28 | 30 | scalarSeries->setData(dataIndex, time, std::cos(time)); |
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29 | 31 | } |
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30 | 32 | |
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31 | 33 | return scalarSeries; |
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32 | 34 | } |
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35 | ||
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36 | void CosinusProvider::requestDataLoading(const QVector<SqpDateTime> &dateTimeList) | |
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37 | { | |
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38 | // NOTE: Try to use multithread if possible | |
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39 | foreach (const auto &dateTime, dateTimeList) { | |
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40 | ||
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41 | auto scalarSeries = this->retrieveDataSeries(dateTime); | |
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42 | ||
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43 | emit dataProvided(scalarSeries, dateTime); | |
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44 | } | |
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45 | } | |
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46 | ||
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47 | ||
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48 | std::shared_ptr<IDataSeries> retrieveDataSeries(const SqpDateTime &dateTime) | |
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49 | { | |
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50 | ||
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51 | // Gets the timerange from the parameters | |
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52 | auto start = dateTime.m_TStart; | |
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53 | auto end = dateTime.m_TEnd; | |
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54 | ||
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55 | // We assure that timerange is valid | |
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56 | if (end < start) { | |
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57 | std::swap(start, end); | |
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58 | } | |
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59 | ||
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60 | // Generates scalar series containing cosinus values (one value per second) | |
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61 | auto scalarSeries | |
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62 | = std::make_shared<ScalarSeries>(end - start, Unit{QStringLiteral("t"), true}, Unit{}); | |
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63 | ||
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64 | auto dataIndex = 0; | |
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65 | for (auto time = start; time < end; ++time, ++dataIndex) { | |
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66 | scalarSeries->setData(dataIndex, time, std::cos(time)); | |
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67 | } | |
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68 | ||
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69 | ||
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70 | return scalarSeries; | |
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71 | } | |
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