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88 lines
2.6 KiB
Plaintext
88 lines
2.6 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsscalecalculator.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsScaleCalculator
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{
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%Docstring
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Calculates scale for a given combination of canvas size, map extent,
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and monitor dpi.
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%End
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%TypeHeaderCode
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#include "qgsscalecalculator.h"
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%End
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public:
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QgsScaleCalculator( double dpi = 0,
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QgsUnitTypes::DistanceUnit mapUnits = QgsUnitTypes::DistanceMeters );
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%Docstring
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Constructor
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:param dpi: Monitor resolution in dots per inch
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:param mapUnits: Units of the data on the map
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%End
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void setDpi( double dpi );
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%Docstring
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Sets the ``dpi`` (dots per inch) for the output resolution, to be used in scale calculations.
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.. seealso:: :py:func:`dpi`
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%End
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double dpi();
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%Docstring
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Returns the DPI (dots per inch) used in scale calculations.
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.. seealso:: :py:func:`setDpi`
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%End
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void setMapUnits( QgsUnitTypes::DistanceUnit mapUnits );
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%Docstring
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Set the map units
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:param mapUnits: Units of the data on the map. Must match a value from the
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%End
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QgsUnitTypes::DistanceUnit mapUnits() const;
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%Docstring
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Returns current map units
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%End
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double calculate( const QgsRectangle &mapExtent, int canvasWidth );
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%Docstring
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Calculate the scale denominator
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:param mapExtent: QgsRectangle containing the current map extent
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:param canvasWidth: Width of the map canvas in pixel (physical) units
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:return: scale denominator of current map view, e.g. 1000.0 for a 1:1000 map.
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%End
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double calculateGeographicDistance( const QgsRectangle &mapExtent );
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%Docstring
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Calculate the distance between two points in geographic coordinates.
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Used to calculate scale for map views with geographic (decimal degree)
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data.
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:param mapExtent: QgsRectangle containing the current map extent
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsscalecalculator.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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