1 /*************************************************************************** 2 qgsalgorithmrasterstackposition.h 3 --------------------- 4 begin : July 2020 5 copyright : (C) 2020 by Clemens Raffler 6 email : clemens dot raffler at gmail dot com 7 ***************************************************************************/ 8 9 /*************************************************************************** 10 * * 11 * This program is free software; you can redistribute it and/or modify * 12 * it under the terms of the GNU General Public License as published by * 13 * the Free Software Foundation; either version 2 of the License, or * 14 * (at your option) any later version. * 15 * * 16 ***************************************************************************/ 17 18 #ifndef QGSALGORITHMRASTERSTACKPOSITION_H 19 #define QGSALGORITHMRASTERSTACKPOSITION_H 20 21 #define SIP_NO_FILE 22 23 #include "qgis_sip.h" 24 #include "qgsapplication.h" 25 #include "qgsprocessingalgorithm.h" 26 #include "qgsrasterprojector.h" 27 #include "qgsrasteranalysisutils.h" 28 29 ///@cond PRIVATE 30 31 class QgsRasterStackPositionAlgorithmBase : public QgsProcessingAlgorithm 32 { 33 public: 34 QgsRasterStackPositionAlgorithmBase() = default; 35 void initAlgorithm( const QVariantMap &configuration = QVariantMap() ) override; 36 QString group() const override; 37 QString groupId() const override; 38 39 protected: 40 bool prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override; 41 QVariantMap processAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override; 42 virtual int findPosition( std::vector< std::unique_ptr< QgsRasterBlock > > &rasterBlockStack, int &row, int &col, bool &noDataInRasterBlockStack ) = 0; 43 double mNoDataValue = -9999; 44 45 private: 46 std::vector< QgsRasterAnalysisUtils::RasterLogicInput > mInputs; 47 bool mIgnoreNoData; 48 int mLayerWidth; 49 int mLayerHeight; 50 QgsRectangle mExtent; 51 QgsCoordinateReferenceSystem mCrs; 52 double mRasterUnitsPerPixelX; 53 double mRasterUnitsPerPixelY; 54 }; 55 56 class QgsRasterStackLowestPositionAlgorithm : public QgsRasterStackPositionAlgorithmBase 57 { 58 public: 59 QgsRasterStackLowestPositionAlgorithm() = default; 60 QString name() const override; 61 QString displayName() const override; 62 QStringList tags() const override; 63 QString shortHelpString() const override; 64 QgsRasterStackLowestPositionAlgorithm *createInstance() const override SIP_FACTORY; 65 66 protected: 67 int findPosition( std::vector< std::unique_ptr< QgsRasterBlock > > &rasterBlockStack, int &row, int &col, bool &noDataInRasterBlockStack ) override; 68 }; 69 70 class QgsRasterStackHighestPositionAlgorithm : public QgsRasterStackPositionAlgorithmBase 71 { 72 public: 73 QgsRasterStackHighestPositionAlgorithm() = default; 74 QString name() const override; 75 QString displayName() const override; 76 QStringList tags() const override; 77 QString shortHelpString() const override; 78 QgsRasterStackHighestPositionAlgorithm *createInstance() const override SIP_FACTORY; 79 80 protected: 81 int findPosition( std::vector< std::unique_ptr< QgsRasterBlock > > &rasterBlockStack, int &row, int &col, bool &noDataInRasterBlockStack ) override; 82 }; 83 84 ///@endcond PRIVATE 85 86 #endif // QGSALGORITHMRASTERSTACKPOSITION_H 87