ensure that dataIndex is a int
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1 | #ifndef SCIQLOP_COSINUSPROVIDER_H | |
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2 | #define SCIQLOP_COSINUSPROVIDER_H | |
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3 | ||
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4 | #include <Data/IDataProvider.h> | |
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5 | ||
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6 | /** | |
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7 | * @brief The CosinusProvider class is an example of how a data provider can generate data | |
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8 | */ | |
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9 | class CosinusProvider : public IDataProvider { | |
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10 | public: | |
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11 | /// @sa IDataProvider::retrieveData() | |
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12 | std::unique_ptr<IDataSeries> | |
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13 | retrieveData(const DataProviderParameters ¶meters) const override; | |
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14 | }; | |
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15 | ||
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16 | #endif // SCIQLOP_COSINUSPROVIDER_H | |
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1 | #include "CosinusProvider.h" | |
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2 | ||
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3 | #include <Data/DataProviderParameters.h> | |
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4 | #include <Data/ScalarSeries.h> | |
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5 | ||
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6 | std::unique_ptr<IDataSeries> | |
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7 | CosinusProvider::retrieveData(const DataProviderParameters ¶meters) const | |
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8 | { | |
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9 | // Gets the timerange from the parameters | |
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10 | auto start = parameters.m_TStart; | |
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11 | auto end = parameters.m_TEnd; | |
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12 | ||
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13 | // We assure that timerange is valid | |
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14 | if (end < start) { | |
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15 | std::swap(start, end); | |
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16 | } | |
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17 | ||
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18 | // Generates scalar series containing cosinus values (one value per second) | |
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19 | auto scalarSeries | |
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20 | = std::make_unique<ScalarSeries>(end - start, QStringLiteral("t"), QStringLiteral("")); | |
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21 | ||
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22 | for (auto time = start; time < end; ++time) { | |
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23 | auto dataIndex = time - start; | |
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24 | scalarSeries->setData(dataIndex, time, std::cos(time)); | |
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25 | } | |
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26 | ||
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27 | return scalarSeries; | |
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28 | } | |
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