QGIS/python/core/auto_generated/qgsmaptopixelgeometrysimplifier.sip.in

/************************************************************************
 * This file has been generated automatically from                      *
 *                                                                      *
 * src/core/qgsmaptopixelgeometrysimplifier.h                           *
 *                                                                      *
 * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
 ************************************************************************/





class QgsMapToPixelSimplifier : QgsAbstractGeometrySimplifier
{
%Docstring
Implementation of GeometrySimplifier using the "MapToPixel" algorithm

Simplifies a geometry removing points within of the maximum distance difference that defines the MapToPixel info of a RenderContext request.
This class enables simplify the geometries to be rendered in a MapCanvas target to speed up the vector drawing.
%End

%TypeHeaderCode
#include "qgsmaptopixelgeometrysimplifier.h"
%End
  public:
    enum SimplifyAlgorithm
    {
      Distance,
      SnapToGrid,
      Visvalingam,
    };

    QgsMapToPixelSimplifier( int simplifyFlags, double tolerance, SimplifyAlgorithm simplifyAlgorithm = Distance );
%Docstring
Constructor
%End

    enum SimplifyFlag
    {
      NoFlags,
      SimplifyGeometry,
      SimplifyEnvelope,
    };

  protected:



    static float calculateLengthSquared2D( double x1, double y1, double x2, double y2 );
%Docstring
Returns the squared 2D-distance of the vector defined by the two points specified
%End

    static bool equalSnapToGrid( double x1, double y1, double x2, double y2, double gridOriginX, double gridOriginY, float gridInverseSizeXY );
%Docstring
Returns whether the points belong to the same grid
%End

  public:
    int simplifyFlags() const;
%Docstring
Gets the simplification hints of the vector layer managed
%End
    void setSimplifyFlags( int simplifyFlags );
%Docstring
Sets the simplification hints of the vector layer managed
%End

    SimplifyAlgorithm simplifyAlgorithm() const;
%Docstring
Gets the local simplification algorithm of the vector layer managed
%End
    void setSimplifyAlgorithm( SimplifyAlgorithm simplifyAlgorithm );
%Docstring
Sets the local simplification algorithm of the vector layer managed
%End

    virtual QgsGeometry simplify( const QgsGeometry &geometry ) const;

%Docstring
Returns a simplified version the specified geometry
%End

    void setTolerance( double value );
%Docstring
Sets the tolerance of the vector layer managed
%End

  public:

    static bool isGeneralizableByMapBoundingBox( const QgsRectangle &envelope, double map2pixelTol );
%Docstring
Returns whether the envelope can be replaced by its BBOX when is applied the specified map2pixel context
%End

    bool isGeneralizableByMapBoundingBox( const QgsRectangle &envelope ) const;
%Docstring
Returns whether the envelope can be replaced by its BBOX when is applied the specified map2pixel context
%End
};

/************************************************************************
 * This file has been generated automatically from                      *
 *                                                                      *
 * src/core/qgsmaptopixelgeometrysimplifier.h                           *
 *                                                                      *
 * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
 ************************************************************************/