GEOS  3.8.0dev
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geos::simplify::TopologyPreservingSimplifier Class Reference

Simplifies a geometry, ensuring that the result is a valid geometry having the same dimension and number of components as the input. More...

#include <TopologyPreservingSimplifier.h>

Public Member Functions

 TopologyPreservingSimplifier (const geom::Geometry *geom)
 
void setDistanceTolerance (double tolerance)
 Sets the distance tolerance for the simplification. More...
 
std::unique_ptr< geom::GeometrygetResultGeometry ()
 

Static Public Member Functions

static std::unique_ptr
< geom::Geometry
simplify (const geom::Geometry *geom, double tolerance)
 

Detailed Description

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.

In particular, if the input is an areal geometry ( Polygon or MultiPolygon )

Member Function Documentation

void geos::simplify::TopologyPreservingSimplifier::setDistanceTolerance ( double  tolerance)

Sets the distance tolerance for the simplification.

All vertices in the simplified geometry will be within this distance of the original geometry. The tolerance value must be non-negative. A tolerance value of zero is effectively a no-op.

Parameters
distanceTolerancethe approximation tolerance to use

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