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63 lines
2.3 KiB
Plaintext
63 lines
2.3 KiB
Plaintext
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/** \ingroup core
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* \brief QgsRasterProjector implements approximate projection support for
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* it calculates grid of points in source CRS for target CRS + extent
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* which are used to calculate affine transformation matrices.
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* \class QgsRasterProjector
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*/
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class QgsRasterProjector : QgsRasterInterface
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{
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%TypeHeaderCode
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#include <qgsrasterprojector.h>
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#include <qgscoordinatereferencesystem.h>
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%End
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public:
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/** Precision defines if each pixel is reprojected or approximate reprojection based
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* on an approximation matrix of reprojected points is used.
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*/
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enum Precision
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{
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Approximate, //!< Approximate (default), fast but possibly inaccurate
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Exact, //!< Exact, precise but slow
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};
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QgsRasterProjector();
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/** \brief The destructor */
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~QgsRasterProjector();
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virtual QgsRasterProjector *clone() const /Factory/;
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int bandCount() const;
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Qgis::DataType dataType( int bandNo ) const;
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//! \brief set source and destination CRS
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void setCrs( const QgsCoordinateReferenceSystem & theSrcCRS, const QgsCoordinateReferenceSystem & theDestCRS,
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int srcDatumTransform = -1, int destDatumTransform = -1 );
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//! \brief Get source CRS
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QgsCoordinateReferenceSystem sourceCrs() const;
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//! \brief Get destination CRS
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QgsCoordinateReferenceSystem destinationCrs() const;
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Precision precision() const;
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void setPrecision( Precision precision );
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// Translated precision mode, for use in ComboBox etc.
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static QString precisionLabel( Precision precision );
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QgsRasterBlock *block( int bandNo, const QgsRectangle & extent, int width, int height, QgsRasterBlockFeedback* feedback = nullptr ) / Factory /;
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//! Calculate destination extent and size from source extent and size
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bool destExtentSize( const QgsRectangle& theSrcExtent, int theSrcXSize, int theSrcYSize,
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QgsRectangle& theDestExtent, int& theDestXSize, int& theDestYSize );
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//! Calculate destination extent and size from source extent and size
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static bool extentSize( const QgsCoordinateTransform& ct,
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const QgsRectangle& theSrcExtent, int theSrcXSize, int theSrcYSize,
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QgsRectangle& theDestExtent, int& theDestXSize, int& theDestYSize );
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};
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