geom

package module
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 Go to latest Published: Dec 23, 2015 License: MIT Imports: 1 Imported by: 12

README

geom

Package geom is a geometry library in Go.

It provides definition of basic geometry structures (Point, LineString, Polygon), including Z, M and ZM variants. MultiGeometry and geometries collections are also provided.

Sub-packages allow encoding to GeoJSON and decoding from Well Known Binary.

Install

go get github.com/xeonx/geom

Docs

GoDoc

Tests

go test is used for testing.

Roadmap

License

This code is licensed under the MIT license. See LICENSE.

Documentation

Overview

Package geom is a geometry library in Go.

It provides definition of basic geometry structures (Point, LineString, Polygon), including Z, M and ZM variants. MultiGeometry and Geometry collections are also provided.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Envelope 

type Envelope struct {
	Min, Max Point
}

Envelope represents a two-dimensional rectangular region

func NewEnvelope 

func NewEnvelope() *Envelope

NewEnvelope returns a new empty envelope

func NewEnvelopeFromPoint 

func NewEnvelopeFromPoint(pt Point) *Envelope

NewEnvelopeFromPoint returns a new envelope containing a single point

func (*Envelope) Extend 

func (e *Envelope) Extend(other *Envelope) *Envelope

Extend extends the envelope with the givent envelope and returns the modified envelope

func (*Envelope) ExtendPoint 

func (e *Envelope) ExtendPoint(pt Point) *Envelope

ExtendPoint extends the envelope with the givent point and returns the modified envelope

type EnvelopeM 

type EnvelopeM struct {
	Min, Max PointM
}

EnvelopeM represents a two-dimensional rectangular region, with M values

func NewEnvelopeM 

func NewEnvelopeM() *EnvelopeM

NewEnvelopeM returns a new empty envelope

func NewEnvelopeMFromPoint 

func NewEnvelopeMFromPoint(pt PointM) *EnvelopeM

NewEnvelopeMFromPoint returns a new envelope containing a single point

func (*EnvelopeM) Extend 

func (e *EnvelopeM) Extend(other *EnvelopeM) *EnvelopeM

Extend extends the envelope with the givent envelope and returns the modified envelope

func (*EnvelopeM) ExtendPoint 

func (e *EnvelopeM) ExtendPoint(pt PointM) *EnvelopeM

ExtendPoint extends the envelope with the givent point and returns the modified envelope

type EnvelopeZ 

type EnvelopeZ struct {
	Min, Max PointZ
}

EnvelopeZ represents a three-dimensional rectangular region

func NewEnvelopeZ 

func NewEnvelopeZ() *EnvelopeZ

NewEnvelopeZ returns a new empty envelope

func NewEnvelopeZFromPoint 

func NewEnvelopeZFromPoint(pt PointZ) *EnvelopeZ

NewEnvelopeZFromPoint returns a new envelope containing a single point

func (*EnvelopeZ) Extend 

func (e *EnvelopeZ) Extend(other *EnvelopeZ) *EnvelopeZ

Extend extends the envelope with the givent envelope and returns the modified envelope

func (*EnvelopeZ) ExtendPoint 

func (e *EnvelopeZ) ExtendPoint(pt PointZ) *EnvelopeZ

ExtendPoint extends the envelope with the givent point and returns the modified envelope

type EnvelopeZM 

type EnvelopeZM struct {
	Min, Max PointZM
}

EnvelopeZM represents a three-dimensional rectangular region, with M values

func NewEnvelopeZM 

func NewEnvelopeZM() *EnvelopeZM

NewEnvelopeZM returns a new empty envelope

func NewEnvelopeZMFromPoint 

func NewEnvelopeZMFromPoint(pt PointZM) *EnvelopeZM

NewEnvelopeZMFromPoint returns a new envelope containing a single point

func (*EnvelopeZM) Extend 

func (e *EnvelopeZM) Extend(other *EnvelopeZM) *EnvelopeZM

Extend extends the envelope with the givent envelope and returns the modified envelope

func (*EnvelopeZM) ExtendPoint 

func (e *EnvelopeZM) ExtendPoint(pt PointZM) *EnvelopeZM

ExtendPoint extends the envelope with the givent point and returns the modified envelope

type Geometry 

type Geometry interface {
	Envelope() *Envelope

	Clone() Geometry

	Iterate(f func([]Point) error) error //The iterate function can modify Point in place
}

Geometry represents a geometry object

type GeometryCollection 

type GeometryCollection []Geometry

GeometryCollection is a collection of two-dimensional geometries

func (GeometryCollection) Clone 

func (c GeometryCollection) Clone() Geometry

Clone returns a deep copy of the geometry collection

func (GeometryCollection) Envelope 

func (c GeometryCollection) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (GeometryCollection) Iterate 

func (c GeometryCollection) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the geometry collection

type GeometryCollectionM 

type GeometryCollectionM []GeometryM

GeometryCollectionM is a collection of two-dimensional geometries, with an additional value defined on each vertex

func (GeometryCollectionM) Clone 

func (c GeometryCollectionM) Clone() Geometry

Clone returns a deep copy of the geometry collection

func (GeometryCollectionM) Envelope 

func (c GeometryCollectionM) Envelope() *Envelope

Envelope returns an envelope around the geometry collection

func (GeometryCollectionM) EnvelopeM 

func (c GeometryCollectionM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the geometry collection

func (GeometryCollectionM) Iterate 

func (c GeometryCollectionM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the geometry collection

type GeometryCollectionZ 

type GeometryCollectionZ []GeometryZ

GeometryCollectionZ is a collection of three-dimensional geometries

func (GeometryCollectionZ) Clone 

func (c GeometryCollectionZ) Clone() Geometry

Clone returns a deep copy of the geometry collection

func (GeometryCollectionZ) Envelope 

func (c GeometryCollectionZ) Envelope() *Envelope

Envelope returns an envelope around the geometry collection

func (GeometryCollectionZ) EnvelopeZ 

func (c GeometryCollectionZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the geometry collection

func (GeometryCollectionZ) Iterate 

func (c GeometryCollectionZ) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the geometry collection

type GeometryCollectionZM 

type GeometryCollectionZM []GeometryZM

GeometryCollectionZM is a collection of three-dimensional geometries, with an additional value defined on each vertex

func (GeometryCollectionZM) Clone 

func (c GeometryCollectionZM) Clone() Geometry

Clone returns a deep copy of the geometry collection

func (GeometryCollectionZM) Envelope 

func (c GeometryCollectionZM) Envelope() *Envelope

Envelope returns an envelope around the geometry collection

func (GeometryCollectionZM) EnvelopeM 

func (c GeometryCollectionZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the geometry collection

func (GeometryCollectionZM) EnvelopeZ 

func (c GeometryCollectionZM) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the geometry collection

func (GeometryCollectionZM) EnvelopeZM 

func (c GeometryCollectionZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the GeometryCollection

func (GeometryCollectionZM) Iterate 

func (c GeometryCollectionZM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the geometry collection

type GeometryM 

type GeometryM interface {
	Geometry

	EnvelopeM() *EnvelopeM
}

GeometryM represents a geometry object, with an additional value defined on each vertex

type GeometryZ 

type GeometryZ interface {
	Geometry

	EnvelopeZ() *EnvelopeZ
}

GeometryZ represents a three-dimensional geometry object

type GeometryZM 

type GeometryZM interface {
	GeometryZ

	//Duplication of methods of GeometryM because we can not embed it directly (kind of diamond inheritance problem)
	EnvelopeM() *EnvelopeM

	EnvelopeZM() *EnvelopeZM
}

GeometryZM represents a three-dimensional geometry object, with an additional value defined on each vertex

type LineString 

type LineString []Point

LineString is a two-dimensional geometry representing a multi-vertex line

func (LineString) Clone 

func (l LineString) Clone() Geometry

Clone returns a deep copy of the line

func (LineString) Envelope 

func (l LineString) Envelope() *Envelope

Envelope returns an envelope around the line

func (LineString) Iterate 

func (l LineString) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the line

type LineStringM 

type LineStringM []PointM

LineStringM is a two-dimensional geometry representing a multi-vertex line, with an additional value defined on each vertex

func (LineStringM) Clone 

func (l LineStringM) Clone() Geometry

Clone returns a deep copy of the line

func (LineStringM) Envelope 

func (l LineStringM) Envelope() *Envelope

Envelope returns an envelope around the line

func (LineStringM) EnvelopeM 

func (l LineStringM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the line

func (LineStringM) Iterate 

func (l LineStringM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the line

type LineStringZ 

type LineStringZ []PointZ

LineStringZ is a three-dimensional geometry representing a multi-vertex line

func (LineStringZ) Clone 

func (l LineStringZ) Clone() Geometry

Clone returns a deep copy of the line

func (LineStringZ) Envelope 

func (l LineStringZ) Envelope() *Envelope

Envelope returns an envelope around the line

func (LineStringZ) EnvelopeZ 

func (l LineStringZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the line

func (LineStringZ) Iterate 

func (l LineStringZ) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the line

type LineStringZM 

type LineStringZM []PointZM

LineStringZM is a three-dimensional geometry representing a multi-vertex line, with an additional value defined on each vertex

func (LineStringZM) Clone 

func (l LineStringZM) Clone() Geometry

Clone returns a deep copy of the line

func (LineStringZM) Envelope 

func (l LineStringZM) Envelope() *Envelope

Envelope returns an envelope around the line

func (LineStringZM) EnvelopeM 

func (l LineStringZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the line

func (LineStringZM) EnvelopeZ 

func (l LineStringZM) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the line

func (LineStringZM) EnvelopeZM 

func (l LineStringZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the line

func (LineStringZM) Iterate 

func (l LineStringZM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the line

type MultiLineString 

type MultiLineString []LineString

MultiLineString is a collection of two-dimensional geometries representing multi-vertex lines

func (MultiLineString) Clone 

func (c MultiLineString) Clone() Geometry

Clone returns a deep copy of the multi-linestring

func (MultiLineString) Envelope 

func (c MultiLineString) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiLineString) Iterate 

func (c MultiLineString) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-linestring

type MultiLineStringM 

type MultiLineStringM []LineStringM

MultiLineStringM is a collection of two-dimensional geometries representing multi-vertex lines, with an additional value defined on each vertex

func (MultiLineStringM) Clone 

func (c MultiLineStringM) Clone() Geometry

Clone returns a deep copy of the multi-linestring

func (MultiLineStringM) Envelope 

func (c MultiLineStringM) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiLineStringM) EnvelopeM 

func (c MultiLineStringM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the GeometryCollection

func (MultiLineStringM) Iterate 

func (c MultiLineStringM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-linestring

type MultiLineStringZ 

type MultiLineStringZ []LineStringZ

MultiLineStringZ is a collection of three-dimensional geometries representing multi-vertex lines

func (MultiLineStringZ) Clone 

func (c MultiLineStringZ) Clone() Geometry

Clone returns a deep copy of the multi-linestring

func (MultiLineStringZ) Envelope 

func (c MultiLineStringZ) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiLineStringZ) EnvelopeZ 

func (c MultiLineStringZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the GeometryCollection

func (MultiLineStringZ) Iterate 

func (c MultiLineStringZ) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-linestring

type MultiLineStringZM 

type MultiLineStringZM []LineStringZM

MultiLineStringZM is a collection of three-dimensional geometries representing multi-vertex lines, with an additional value defined on each vertex

func (MultiLineStringZM) Clone 

func (c MultiLineStringZM) Clone() Geometry

Clone returns a deep copy of the multi-linestring

func (MultiLineStringZM) Envelope 

func (c MultiLineStringZM) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiLineStringZM) EnvelopeM 

func (c MultiLineStringZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the GeometryCollection

func (MultiLineStringZM) EnvelopeZ 

func (c MultiLineStringZM) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the GeometryCollection

func (MultiLineStringZM) EnvelopeZM 

func (c MultiLineStringZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the GeometryCollection

func (MultiLineStringZM) Iterate 

func (c MultiLineStringZM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-linestring

type MultiPoint 

type MultiPoint []Point

MultiPoint is a collection of two-dimensional geometries representing points

func (MultiPoint) Clone 

func (c MultiPoint) Clone() Geometry

Clone returns a deep copy of the multi-point

func (MultiPoint) Envelope 

func (c MultiPoint) Envelope() *Envelope

Envelope returns an envelope around the multi-point

func (MultiPoint) Iterate 

func (c MultiPoint) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-point

type MultiPointM 

type MultiPointM []PointM

MultiPointM is a collection of two-dimensional geometries representing points, with an additional value defined on each point

func (MultiPointM) Clone 

func (c MultiPointM) Clone() Geometry

Clone returns a deep copy of the multi-point

func (MultiPointM) Envelope 

func (c MultiPointM) Envelope() *Envelope

Envelope returns an envelope around the multi-point

func (MultiPointM) EnvelopeM 

func (c MultiPointM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the multi-point

func (MultiPointM) Iterate 

func (c MultiPointM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-point

type MultiPointZ 

type MultiPointZ []PointZ

MultiPointZ is a collection of three-dimensional geometries representing points

func (MultiPointZ) Clone 

func (c MultiPointZ) Clone() Geometry

Clone returns a deep copy of the multi-point

func (MultiPointZ) Envelope 

func (c MultiPointZ) Envelope() *Envelope

Envelope returns an envelope around the multi-point

func (MultiPointZ) EnvelopeZ 

func (c MultiPointZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the multi-point

func (MultiPointZ) Iterate 

func (c MultiPointZ) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-point

type MultiPointZM 

type MultiPointZM []PointZM

MultiPointZM is a collection of three-dimensional geometries representing points, with an additional value defined on each point

func (MultiPointZM) Clone 

func (c MultiPointZM) Clone() Geometry

Clone returns a deep copy of the multi-point

func (MultiPointZM) Envelope 

func (c MultiPointZM) Envelope() *Envelope

Envelope returns an envelope around the multi-point

func (MultiPointZM) EnvelopeM 

func (c MultiPointZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the multi-point

func (MultiPointZM) EnvelopeZ 

func (c MultiPointZM) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the multi-point

func (MultiPointZM) EnvelopeZM 

func (c MultiPointZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the multi-point

func (MultiPointZM) Iterate 

func (c MultiPointZM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-point

type MultiPolygon 

type MultiPolygon []Polygon

MultiPolygon is a collection of two-dimensional geometries representing polygons

func (MultiPolygon) Clone 

func (c MultiPolygon) Clone() Geometry

Clone returns a deep copy of the multi-polygon

func (MultiPolygon) Envelope 

func (c MultiPolygon) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiPolygon) Iterate 

func (c MultiPolygon) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-polygon

type MultiPolygonM 

type MultiPolygonM []PolygonM

MultiPolygonM is a collection of two-dimensional geometries representing polygons, with an additional value defined on each vertex

func (MultiPolygonM) Clone 

func (c MultiPolygonM) Clone() Geometry

Clone returns a deep copy of the multi-polygon

func (MultiPolygonM) Envelope 

func (c MultiPolygonM) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiPolygonM) EnvelopeM 

func (c MultiPolygonM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the GeometryCollection

func (MultiPolygonM) Iterate 

func (c MultiPolygonM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-polygon

type MultiPolygonZ 

type MultiPolygonZ []PolygonZ

MultiPolygonZ is a collection of three-dimensional geometries representing polygons

func (MultiPolygonZ) Clone 

func (c MultiPolygonZ) Clone() Geometry

Clone returns a deep copy of the multi-polygon

func (MultiPolygonZ) Envelope 

func (c MultiPolygonZ) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiPolygonZ) EnvelopeZ 

func (c MultiPolygonZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the GeometryCollection

func (MultiPolygonZ) Iterate 

func (c MultiPolygonZ) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-polygon

type MultiPolygonZM 

type MultiPolygonZM []PolygonZM

MultiPolygonZM is a collection of three-dimensional geometries representing polygons, with an additional value defined on each vertex

func (MultiPolygonZM) Clone 

func (c MultiPolygonZM) Clone() Geometry

Clone returns a deep copy of the multi-polygon

func (MultiPolygonZM) Envelope 

func (c MultiPolygonZM) Envelope() *Envelope

Envelope returns an envelope around the GeometryCollection

func (MultiPolygonZM) EnvelopeM 

func (c MultiPolygonZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the GeometryCollection

func (MultiPolygonZM) EnvelopeZ 

func (c MultiPolygonZM) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the GeometryCollection

func (MultiPolygonZM) EnvelopeZM 

func (c MultiPolygonZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the GeometryCollection

func (MultiPolygonZM) Iterate 

func (c MultiPolygonZM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the multi-polygon

type Point 

type Point struct {
	X float64
	Y float64
}

Point is a two-dimensional geometry representing a point

func (Point) Clone 

func (pt Point) Clone() Geometry

Clone returns a deep copy of the point

func (Point) Envelope 

func (pt Point) Envelope() *Envelope

Envelope returns an envelope around the point

func (*Point) Iterate 

func (pt *Point) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the point

type PointM 

type PointM struct {
	Point
	M float64
}

PointM is a two-dimensional geometry representing a point, with an additionnal value

func (PointM) EnvelopeM 

func (pt PointM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the point

type PointZ 

type PointZ struct {
	Point
	Z float64
}

PointZ is a three-dimensional geometry representing a point

func (PointZ) EnvelopeZ 

func (pt PointZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the point

type PointZM 

type PointZM struct {
	PointZ
	M float64
}

PointZM is a three-dimensional geometry representing a point, with an additionnal value

func (PointZM) EnvelopeM 

func (pt PointZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the point

func (PointZM) EnvelopeZM 

func (pt PointZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the point

type Polygon 

type Polygon []LineString

Polygon is a two-dimensional geometry representing a polygon

func (Polygon) Clone 

func (p Polygon) Clone() Geometry

Clone returns a deep copy of the polygon

func (Polygon) Envelope 

func (p Polygon) Envelope() *Envelope

Envelope returns an envelope around the polygon

func (Polygon) Iterate 

func (p Polygon) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the polygon

type PolygonM 

type PolygonM []LineStringM

PolygonM is a two-dimensional geometry representing a polygon, with an additional value defined on each vertex

func (PolygonM) Clone 

func (p PolygonM) Clone() Geometry

Clone returns a deep copy of the polygon

func (PolygonM) Envelope 

func (p PolygonM) Envelope() *Envelope

Envelope returns an envelope around the polygon

func (PolygonM) EnvelopeM 

func (p PolygonM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the polygon

func (PolygonM) Iterate 

func (p PolygonM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the polygon

type PolygonZ 

type PolygonZ []LineStringZ

PolygonZ is a three-dimensional geometry representing a polygon

func (PolygonZ) Clone 

func (p PolygonZ) Clone() Geometry

Clone returns a deep copy of the polygon

func (PolygonZ) Envelope 

func (p PolygonZ) Envelope() *Envelope

Envelope returns an envelope around the polygon

func (PolygonZ) EnvelopeZ 

func (p PolygonZ) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the polygon

func (PolygonZ) Iterate 

func (p PolygonZ) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the polygon

type PolygonZM 

type PolygonZM []LineStringZM

PolygonZM is a three-dimensional geometry representing a polygon, with an additional value defined on each vertex

func (PolygonZM) Clone 

func (p PolygonZM) Clone() Geometry

Clone returns a deep copy of the polygon

func (PolygonZM) Envelope 

func (p PolygonZM) Envelope() *Envelope

Envelope returns an envelope around the polygon

func (PolygonZM) EnvelopeM 

func (p PolygonZM) EnvelopeM() *EnvelopeM

EnvelopeM returns an envelope around the polygon

func (PolygonZM) EnvelopeZ 

func (p PolygonZM) EnvelopeZ() *EnvelopeZ

EnvelopeZ returns an envelope around the polygon

func (PolygonZM) EnvelopeZM 

func (p PolygonZM) EnvelopeZM() *EnvelopeZM

EnvelopeZM returns an envelope around the polygon

func (PolygonZM) Iterate 

func (p PolygonZM) Iterate(f func([]Point) error) error

Iterate walks over the points (and can modify in situ) the polygon

Source Files

View all Source files

Directories

Path Synopsis
encoding
geojson
Package geojson implements decoding of GeoJSON objects as defined at http://geojson.org/.
 Package geojson implements decoding of GeoJSON objects as defined at http://geojson.org/.
wkb
Package wkb implements decoding of WKB objects as defined in OGC 06-103r4.
 Package wkb implements decoding of WKB objects as defined in OGC 06-103r4.

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