Implementation of GeometrySimplifier using the Douglas-Peucker algorithm. More...

#include <qgsgeometrysimplifier.h>

Inheritance diagram for QgsTopologyPreservingSimplifier:

Collaboration diagram for QgsTopologyPreservingSimplifier:

Public Member Functions
	QgsTopologyPreservingSimplifier (double tolerance)
	Implementation of GeometrySimplifier using the Douglas-Peucker algorithm.
virtual	~QgsTopologyPreservingSimplifier ()
virtual QgsGeometry *	simplify (QgsGeometry *geometry) const
	Returns a simplified version the specified geometry.
virtual bool	simplifyGeometry (QgsGeometry *geometry) const
	Simplifies the specified geometry.
Public Member Functions inherited from QgsAbstractGeometrySimplifier
virtual	~QgsAbstractGeometrySimplifier ()

Protected Attributes
double	mTolerance
	Distance tolerance for the simplification.

Additional Inherited Members
Static Public Member Functions inherited from QgsAbstractGeometrySimplifier
static bool	canbeGeneralizedByDeviceBoundingBox (const QgsRectangle &envelope, float mapToPixelTol=1.0f)
	Returns whether the device-envelope can be replaced by its BBOX when is applied the specified tolerance.
static bool	canbeGeneralizedByDeviceBoundingBox (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.

Detailed Description

Implementation of GeometrySimplifier using the Douglas-Peucker algorithm.

Simplifies a geometry, ensuring that the result is a valid geometry having the same dimension and number of components as the input. The simplification uses a maximum distance difference algorithm similar to the one used in the Douglas-Peucker algorithm.

Definition at line 50 of file qgsgeometrysimplifier.h.