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559d7bb943
...rather than reading input layers directly through GDAL. Benefits include more robust handling of nodata/data type conversions, less code duplication, also being able to take advantage of features in QGIS raster code like handling gain/offset in rasters. (fix #12450) Also, add a choice of output projection to the raster calculator. Previously the output CRS would be taken from the first raster, with no guarantees that the output extent matched the output CRS. This resulted in empty/misplaced rasters. (fix #3649)
75 lines
2.1 KiB
Plaintext
75 lines
2.1 KiB
Plaintext
class QgsRasterCalcNode
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{
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%TypeHeaderCode
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#include <qgsrastercalcnode.h>
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%End
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public:
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//! defines possible types of node
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enum Type
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{
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tOperator,
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tNumber,
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tRasterRef,
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tMatrix
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};
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//! possible operators
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enum Operator
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{
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opPLUS,
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opMINUS,
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opMUL,
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opDIV,
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opPOW,
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opSQRT,
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opSIN,
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opCOS,
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opTAN,
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opASIN,
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opACOS,
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opATAN,
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opEQ, // =
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opNE, //!=
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opGT, // >
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opLT, // <
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opGE, // >=
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opLE, // <=
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opAND,
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opOR,
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opSIGN, // change sign
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opNONE,
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};
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QgsRasterCalcNode();
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QgsRasterCalcNode( double number );
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QgsRasterCalcNode( QgsRasterMatrix* matrix );
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QgsRasterCalcNode( Operator op, QgsRasterCalcNode* left, QgsRasterCalcNode* right );
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QgsRasterCalcNode( const QString& rasterName );
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~QgsRasterCalcNode();
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Type type() const;
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//set left node
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void setLeft( QgsRasterCalcNode* left );
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void setRight( QgsRasterCalcNode* right );
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/**Calculates result (might be real matrix or single number)*/
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// bool calculate( QMap<QString, QgsRasterCalculateInputMatrix*>& rasterData, QgsRasterMatrix& result ) const;
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/**Calculates result of raster calculation (might be real matrix or single number).
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* @param rasterData input raster data references, map of raster name to raster data block
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* @param result destination raster matrix for calculation results
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* @param row optional row number to calculate for calculating result by rows, or -1 to
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* calculate entire result
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* @note added in QGIS 2.10
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* @note not available in Python bindings
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*/
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//bool calculate( QMap<QString, QgsRasterBlock* >& rasterData, QgsRasterMatrix& result, int row = -1 ) const;
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/**@deprecated use method which accepts QgsRasterBlocks instead
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*/
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// bool calculate( QMap<QString, QgsRasterMatrix*>& rasterData, QgsRasterMatrix& result ) const /Deprecated/;
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static QgsRasterCalcNode* parseRasterCalcString( const QString& str, QString& parserErrorMsg ) /Factory/;
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};
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