planar

Documentation

Overview

Package planar provides support for the implementation of spatial operations and geometric algorithms.

Index

• Variables
• type Algorithm
  • func GetStrategy(f newAlgorithm) Algorithm
  • func NewMegrezAlgorithm() Algorithm
  • func NormalStrategy() Algorithm

Variables

var ErrNotPolygon = errors.New("Geometry is not polygon")

ErrNotPolygon UnaryUnion parameter is not polygon

Types

type Algorithm

type Algorithm interface {
	Area(geom space.Geometry) (float64, error)

	Boundary(geom space.Geometry) (space.Geometry, error)

	Buffer(geom space.Geometry, width float64, quadsegs int) space.Geometry

	BufferInMeter(geom space.Geometry, width float64, quadsegs int) space.Geometry

	Centroid(geom space.Geometry) (space.Geometry, error)

	Contains(geom1, geom2 space.Geometry) (bool, error)

	ConvexHull(geom space.Geometry) (space.Geometry, error)

	CoveredBy(geom1, geom2 space.Geometry) (bool, error)

	Covers(geom1, geom2 space.Geometry) (bool, error)

	Crosses(geom1, geom2 space.Geometry) (bool, error)

	Difference(geom1, geom2 space.Geometry) (space.Geometry, error)

	Disjoint(geom1, geom2 space.Geometry) (bool, error)

	Distance(geom1, geom2 space.Geometry) (float64, error)

	SphericalDistance(geom1, geom2 space.Geometry) (float64, error)

	Envelope(geom space.Geometry) (space.Geometry, error)

	Equals(geom1, geom2 space.Geometry) (bool, error)

	EqualsExact(geom1, geom2 space.Geometry, tolerance float64) (bool, error)

	HausdorffDistance(geom1, geom2 space.Geometry) (float64, error)

	HausdorffDistanceDensify(s, d space.Geometry, densifyFrac float64) (float64, error)

	Intersection(geom1, geom2 space.Geometry) (space.Geometry, error)

	Intersects(geom1, geom2 space.Geometry) (bool, error)

	IsClosed(geom space.Geometry) (bool, error)

	IsEmpty(geom space.Geometry) (bool, error)

	IsRing(geom space.Geometry) (bool, error)

	IsSimple(geom space.Geometry) (bool, error)

	Length(geom space.Geometry) (float64, error)

	LineMerge(geom space.Geometry) (space.Geometry, error)

	NGeometry(geom space.Geometry) (int, error)

	Overlaps(geom1, geom2 space.Geometry) (bool, error)

	PointOnSurface(geom space.Geometry) (space.Geometry, error)

	Relate(s, d space.Geometry) (string, error)

	SharedPaths(geom1, geom2 space.Geometry) (string, error)

	Simplify(geom space.Geometry, tolerance float64) (space.Geometry, error)

	SimplifyP(geom space.Geometry, tolerance float64) (space.Geometry, error)

	Snap(input, reference space.Geometry, tolerance float64) (space.Geometry, error)

	SymDifference(geom1, geom2 space.Geometry) (space.Geometry, error)

	Touches(geom1, geom2 space.Geometry) (bool, error)

	UnaryUnion(geom space.Geometry) (space.Geometry, error)

	Union(geom1, geom2 space.Geometry) (space.Geometry, error)

	UniquePoints(geom space.Geometry) (space.Geometry, error)

	Within(geom1, geom2 space.Geometry) (bool, error)
}

Algorithm is the interface implemented by an object that can implementation spatial algorithm.

func GetStrategy

func GetStrategy(f newAlgorithm) Algorithm

GetStrategy returns algorithm by new Algorithm.

func NewMegrezAlgorithm

func NewMegrezAlgorithm() Algorithm

NewMegrezAlgorithm returns Algorithm that is MegrezAlgorithm.

func NormalStrategy

func NormalStrategy() Algorithm

NormalStrategy returns normal algorithm.