QgsAbstractGeometrySimplifier Class Reference

Abstract base class for simplify geometries using a specific algorithm. More...

#include <qgsgeometrysimplifier.h>

Inheritance diagram for QgsAbstractGeometrySimplifier:

Public Member Functions
virtual	~QgsAbstractGeometrySimplifier ()=default
virtual QgsAbstractGeometry *	simplify (const QgsAbstractGeometry *geometry) const =0
	Returns a simplified version the specified geometry. More...
virtual QgsGeometry	simplify (const QgsGeometry &geometry) const =0
	Returns a simplified version the specified geometry. More...

Static Public Member Functions
static bool	isGeneralizableByDeviceBoundingBox (const QgsRectangle &envelope, float mapToPixelTol=1.0f)
	Returns whether the device-envelope can be replaced by its BBOX when is applied the specified tolerance. More...
static bool	isGeneralizableByDeviceBoundingBox (const QVector< QPointF > &points, float mapToPixelTol=1.0f)
	Returns whether the device-geometry can be replaced by its BBOX when is applied the specified tolerance. More...

Detailed Description

Abstract base class for simplify geometries using a specific algorithm.

Definition at line 34 of file qgsgeometrysimplifier.h.

Constructor & Destructor Documentation

~QgsAbstractGeometrySimplifier()

virtual QgsAbstractGeometrySimplifier::~QgsAbstractGeometrySimplifier ( )

virtualdefault

Member Function Documentation

isGeneralizableByDeviceBoundingBox() [1/2]

bool QgsAbstractGeometrySimplifier::isGeneralizableByDeviceBoundingBox ( const QgsRectangle &  envelope, float  mapToPixelTol = 1.0f  )

static

Returns whether the device-envelope can be replaced by its BBOX when is applied the specified tolerance.

Definition at line 23 of file qgsgeometrysimplifier.cpp.

isGeneralizableByDeviceBoundingBox() [2/2]

bool QgsAbstractGeometrySimplifier::isGeneralizableByDeviceBoundingBox ( const QVector< QPointF > &  points, float  mapToPixelTol = 1.0f  )

static

Returns whether the device-geometry can be replaced by its BBOX when is applied the specified tolerance.

Definition at line 28 of file qgsgeometrysimplifier.cpp.

simplify() [1/2]

virtual QgsAbstractGeometry* QgsAbstractGeometrySimplifier::simplify ( const QgsAbstractGeometry *  geometry ) const

pure virtual

Returns a simplified version the specified geometry.

Will return nullptr if no simplification is to be performed to the geometry.

Caller takes ownership of the returned geometry.

Since

QGIS 3.18

Implemented in QgsMapToPixelSimplifier, and QgsTopologyPreservingSimplifier.

simplify() [2/2]

virtual QgsGeometry QgsAbstractGeometrySimplifier::simplify ( const QgsGeometry &  geometry ) const

pure virtual

Returns a simplified version the specified geometry.

Implemented in QgsMapToPixelSimplifier, and QgsTopologyPreservingSimplifier.

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The documentation for this class was generated from the following files:

• /build/qgis-3.20.0+99unstable/src/core/qgsgeometrysimplifier.h
• /build/qgis-3.20.0+99unstable/src/core/qgsgeometrysimplifier.cpp