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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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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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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 | { |
| @@ -30,3 +32,40 CosinusProvider::retrieveData(const DataProviderParameters ¶meters) const | |||
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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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