geos::linearref::LocationIndexOfPoint Class Reference

#include <LocationIndexOfPoint.h>

List of all members.

Public Member Functions
	LocationIndexOfPoint (const geom::Geometry *linearGeom)
LinearLocation	indexOf (const geom::Coordinate &inputPt) const
LinearLocation	indexOfAfter (const geom::Coordinate &inputPt, LinearLocation *minIndex) const
Static Public Member Functions
LinearLocation	indexOf (const geom::Geometry *linearGeom, const geom::Coordinate &inputPt)
LinearLocation	indexOfAfter (const geom::Geometry *linearGeom, const geom::Coordinate &inputPt, LinearLocation *minIndex)

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Detailed Description

Computes the LinearLocation of the point on a linear Geometry nearest a given Coordinate. The nearest point is not necessarily unique; this class always computes the nearest point closest to the start of the geometry.

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Member Function Documentation

LinearLocation geos::linearref::LocationIndexOfPoint::indexOf (  const geom::Coordinate &  inputPt  )  const

Find the nearest location along a linear Geometry to a given point. Parameters: inputPt  the coordinate to locate Returns: the location of the nearest point

LinearLocation geos::linearref::LocationIndexOfPoint::indexOfAfter (  const geom::Coordinate &  inputPt, LinearLocation *  minIndex )  const

Find the nearest LinearLocation along the linear Geometry to a given Coordinate after the specified minimum LinearLocation. If possible the location returned will be strictly greater than the minLocation. If this is not possible, the value returned will equal minLocation. (An example where this is not possible is when minLocation = [end of line] ). Parameters: inputPt  the coordinate to locate minLocation  the minimum location for the point location Returns: the location of the nearest point

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

• LocationIndexOfPoint.h

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