Public Types | Public Member Functions | Static Public Member Functions

geos::operation::overlay::snap::GeometrySnapper Class Reference

Snaps the vertices and segments of a geometry to another's vertices. Should improve robustness for overlay operations. More...

#include <GeometrySnapper.h>

List of all members.

Public Types

typedef std::auto_ptr
< geom::Geometry
GeomPtr
typedef std::pair< GeomPtr,
GeomPtr > 
GeomPtrPair

Public Member Functions

 GeometrySnapper (const geom::Geometry &g)
std::auto_ptr< geom::GeometrysnapTo (const geom::Geometry &g, double snapTolerance)
 Snaps the vertices in the component LineStrings of the source geometry to the vertices of the given snap geometry with a given snap tolerance.

Static Public Member Functions

static void snap (const geom::Geometry &g0, const geom::Geometry &g1, double snapTolerance, GeomPtrPair &ret)
static double computeOverlaySnapTolerance (const geom::Geometry &g)
 Estimates the snap tolerance for a Geometry, taking into account its precision model.
static double computeSizeBasedSnapTolerance (const geom::Geometry &g)
static double computeOverlaySnapTolerance (const geom::Geometry &g1, const geom::Geometry &g2)
 Computes the snap tolerance based on input geometries;.

Detailed Description

Snaps the vertices and segments of a geometry to another's vertices. Should improve robustness for overlay operations.


Constructor & Destructor Documentation

geos::operation::overlay::snap::GeometrySnapper::GeometrySnapper ( const geom::Geometry g  )  [inline]

Creates a new snapper acting on the given geometry

Parameters:
g the geometry to snap

Member Function Documentation

static double geos::operation::overlay::snap::GeometrySnapper::computeOverlaySnapTolerance ( const geom::Geometry g  )  [static]

Estimates the snap tolerance for a Geometry, taking into account its precision model.

Parameters:
g a Geometry
Returns:
the estimated snap tolerance
static void geos::operation::overlay::snap::GeometrySnapper::snap ( const geom::Geometry g0,
const geom::Geometry g1,
double  snapTolerance,
GeomPtrPair &  ret 
) [static]

Snaps two geometries together with a given tolerance.

Parameters:
g0 a geometry to snap
g1 a geometry to snap
snapTolerance the tolerance to use
ret the snapped geometries as a pair of auto_ptrs (output parameter)
std::auto_ptr<geom::Geometry> geos::operation::overlay::snap::GeometrySnapper::snapTo ( const geom::Geometry g,
double  snapTolerance 
)

Snaps the vertices in the component LineStrings of the source geometry to the vertices of the given snap geometry with a given snap tolerance.

Parameters:
g a geometry to snap the source to
snapTolerance 
Returns:
a new snapped Geometry

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