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88 lines
3.5 KiB
Plaintext
88 lines
3.5 KiB
Plaintext
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/** Raster projector */
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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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/** Precison 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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/** \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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*/
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QgsRasterProjector( const QgsCoordinateReferenceSystem& theSrcCRS,
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const QgsCoordinateReferenceSystem& theDestCRS,
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int theSrcDatumTransform,
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int theDestDatumTransform,
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const QgsRectangle& theDestExtent,
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int theDestRows, int theDestCols,
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double theMaxSrcXRes, double theMaxSrcYRes,
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const QgsRectangle& theExtent
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);
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QgsRasterProjector( const QgsCoordinateReferenceSystem& theSrcCRS,
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const QgsCoordinateReferenceSystem& theDestCRS,
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const QgsRectangle& theDestExtent,
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int theDestRows, int theDestCols,
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double theMaxSrcXRes, double theMaxSrcYRes,
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const QgsRectangle& theExtent
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);
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QgsRasterProjector( const QgsCoordinateReferenceSystem& theSrcCRS,
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const QgsCoordinateReferenceSystem& theDestCRS,
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double theMaxSrcXRes, double theMaxSrcYRes,
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const QgsRectangle& theExtent
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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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int 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 srcCrs() const;
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/** \brief Get destination CRS */
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QgsCoordinateReferenceSystem destCrs() const;
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/** \brief set maximum source resolution */
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void setMaxSrcRes( double theMaxSrcXRes, double theMaxSrcYRes );
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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 ) / 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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