geos::coverage::CoverageGapFinder Class Reference

#include <CoverageGapFinder.h>

Public Member Functions
	CoverageGapFinder (std::vector< const Geometry * > &coverage)
std::unique_ptr< Geometry >	findGaps (double gapWidth)

Static Public Member Functions
static std::unique_ptr< Geometry >	findGaps (std::vector< const Geometry * > &coverage, double gapWidth)

Detailed Description

Finds gaps in a polygonal coverage. Gaps are holes in the coverage which are narrower than a given width.

The coverage should be valid according to CoverageValidator. If this is not the case, some gaps may not be reported, or the invocation may fail.

This is a more accurate way of identifying gaps than using CoverageValidator::setGapWidth(double). Gaps which separate the coverage into two disjoint regions are not detected. Gores are not identified as gaps.

Author

mdavis

Constructor & Destructor Documentation

CoverageGapFinder()

geos::coverage::CoverageGapFinder::CoverageGapFinder ( std::vector< const Geometry * > &  coverage )

inline

Creates a new polygonal coverage gap finder.

Parameters

coverage

a set of polygons forming a polygonal coverage

Member Function Documentation

findGaps() [1/2]

std::unique_ptr< Geometry > geos::coverage::CoverageGapFinder::findGaps

(

double

gapWidth

)

Finds gaps in the coverage. Returns lines indicating the locations of the gaps.

Parameters

gapWidth

the maximum width of gap to detect

Returns

a geometry indicating the locations of gaps (which is empty if no gaps were found), or null if the coverage was empty

findGaps() [2/2]

static std::unique_ptr< Geometry > geos::coverage::CoverageGapFinder::findGaps ( std::vector< const Geometry * > &  coverage, double  gapWidth  )

static

Finds gaps in a polygonal coverage. Returns lines indicating the locations of the gaps.

Parameters

coverage	a set of polygons forming a polygonal coverage
gapWidth	the maximum width of gap to detect

Returns

a geometry indicating the locations of gaps (which is empty if no gaps were found), or null if the coverage was empty

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

• CoverageGapFinder.h