geography

package module
v1.0.3 Latest Latest
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 Go to latest Published: Mar 14, 2024 License: MIT Imports: 9 Imported by: 0

README

geom

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WIP

Geometry helpers base on .

package database

import (
	"gitee.com/go-genie/geography"
)

type Geom struct {
		ID              string                    `db:"F_id"`
    	Point           geography.Point           `db:"F_point,null"`
    	MultiPoint      geography.MultiPoint      `db:"F_multi_point,null"`
    	LineString      geography.LineString      `db:"F_line_string,null"`
    	MultiLineString geography.MultiLineString `db:"F_multi_line_string,null"`
    	Polygon         geography.Polygon         `db:"f_polygon,null"`
    	MultiPolygon    geography.MultiPolygon    `db:"f_multi_polygon,null"`
    	Geometry        geography.Geometry        `db:"f_geometry,null"`
}
  • 3857 in db
  • 4326 in go

Documentation

Index

Constants

View Source 
const (
	// https://epsg.io/3857
	SRS3857 = 3857
	// https://epsg.io/4326
	SRS4326 = 4326
)
View Source 
const (
	EPSLN     = 1.0e-10
	D2R       = math.Pi / 180.0
	R2D       = 180.0 / math.Pi
	A         = 6378137.0
	MAXEXTENT = 20037508.342789244
)

Variables

This section is empty.

Functions

func PseudoMercatorToWGS84 

func PseudoMercatorToWGS84(x, y float64) (lon, lat float64)

func TileXYToLonLat 

func TileXYToLonLat(x, y float64, zoom uint32) (lon, lat float64)

func WGS84ToPseudoMercator 

func WGS84ToPseudoMercator(lon, lat float64) (x, y float64)

Types

type Bound 

type Bound struct {
	Min Point
	Max Point
}

func (Bound) AsPolygon 

func (b Bound) AsPolygon() *Polygon

func (Bound) Bottom 

func (b Bound) Bottom() float64

func (Bound) Bound 

func (b Bound) Bound() Bound

func (Bound) Cap 

func (b Bound) Cap() int

func (Bound) Center 

func (b Bound) Center() Point

func (Bound) Clip 

func (b Bound) Clip(bound Bound) Geom

func (Bound) Contains 

func (b Bound) Contains(point Point) bool

func (Bound) DataType 

func (Bound) DataType(driverName string) string

func (Bound) Equal 

func (b Bound) Equal(g Geom) bool

func (Bound) Extend 

func (b Bound) Extend(point Point) Bound

func (Bound) Geometry 

func (b Bound) Geometry() []uint32

func (Bound) Intersects 

func (b Bound) Intersects(bound Bound) bool

func (Bound) IsEmpty 

func (b Bound) IsEmpty() bool

func (Bound) Left 

func (b Bound) Left() float64

func (Bound) LeftTop 

func (b Bound) LeftTop() Point

func (Bound) Pad 

func (b Bound) Pad(d float64) Bound

func (Bound) Project 

func (b Bound) Project(transform Transform) Geom

func (Bound) Right 

func (b Bound) Right() float64

func (Bound) RightBottom 

func (b Bound) RightBottom() Point

func (Bound) ToGeom 

func (b Bound) ToGeom() Geom

func (Bound) Top 

func (b Bound) Top() float64

func (Bound) Type 

func (Bound) Type() string

func (Bound) Union 

func (b Bound) Union(other Bound) Bound

type Geom 

type Geom interface {
	Clip(b Bound) Geom
	Project(transform Transform) Geom

	Type() string

	ToGeom() Geom
	Geometry() []uint32

	Bound() Bound
	Equal(g Geom) bool
}

type Geometry 

type Geometry struct {
	Geom
}

func ToGeometry 

func ToGeometry(g Geom) Geometry

func (Geometry) DataType 

func (g Geometry) DataType(driverName string) string

func (Geometry) MarshalWKT 

func (g Geometry) MarshalWKT(w *wkt.WKTWriter)

func (*Geometry) Scan 

func (g *Geometry) Scan(src interface{}) error

func (Geometry) ToGeom 

func (g Geometry) ToGeom() Geom

func (*Geometry) UnmarshalWKB 

func (g *Geometry) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (Geometry) Value 

func (g Geometry) Value() (driver.Value, error)

func (Geometry) ValueEx 

func (Geometry) ValueEx() string

type LineString 

type LineString []Point

func (LineString) Bound 

func (ls LineString) Bound() Bound

func (LineString) Cap 

func (ls LineString) Cap() int

func (LineString) Clip 

func (ls LineString) Clip(b Bound) Geom

func (LineString) Closed 

func (ls LineString) Closed() bool

func (LineString) DataType 

func (LineString) DataType(driverName string) string

func (LineString) DrawFeature 

func (ls LineString) DrawFeature(w *mvt.FeatureWriter)

func (LineString) Equal 

func (ls LineString) Equal(g Geom) bool

func (LineString) Geometry 

func (ls LineString) Geometry() []uint32

func (LineString) IsValid 

func (ls LineString) IsValid() bool

func (LineString) MarshalWKT 

func (ls LineString) MarshalWKT(w *wkt.WKTWriter)

func (LineString) Project 

func (ls LineString) Project(transform Transform) Geom

func (*LineString) Scan 

func (ls *LineString) Scan(src interface{}) error

func (LineString) ToGeom 

func (ls LineString) ToGeom() Geom

func (LineString) Type 

func (LineString) Type() string

func (*LineString) UnmarshalWKB 

func (ls *LineString) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (LineString) Value 

func (ls LineString) Value() (driver.Value, error)

func (LineString) ValueEx 

func (LineString) ValueEx() string

type MultiLineString 

type MultiLineString []LineString

func (MultiLineString) Bound 

func (mls MultiLineString) Bound() Bound

func (MultiLineString) Cap 

func (mls MultiLineString) Cap() int

func (MultiLineString) Clip 

func (mls MultiLineString) Clip(b Bound) Geom

func (MultiLineString) DataType 

func (MultiLineString) DataType(driverName string) string

func (MultiLineString) DrawFeature 

func (mls MultiLineString) DrawFeature(w *mvt.FeatureWriter)

func (MultiLineString) Equal 

func (mls MultiLineString) Equal(g Geom) bool

func (MultiLineString) Geometry 

func (mls MultiLineString) Geometry() []uint32

func (MultiLineString) MarshalWKT 

func (mls MultiLineString) MarshalWKT(w *wkt.WKTWriter)

func (MultiLineString) Project 

func (mls MultiLineString) Project(transform Transform) Geom

func (*MultiLineString) Scan 

func (mls *MultiLineString) Scan(src interface{}) error

func (MultiLineString) ToGeom 

func (mls MultiLineString) ToGeom() Geom

func (MultiLineString) Type 

func (MultiLineString) Type() string

func (*MultiLineString) UnmarshalWKB 

func (mls *MultiLineString) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (MultiLineString) Value 

func (mls MultiLineString) Value() (driver.Value, error)

func (MultiLineString) ValueEx 

func (MultiLineString) ValueEx() string

type MultiPoint 

type MultiPoint []Point

func (MultiPoint) Bound 

func (mp MultiPoint) Bound() Bound

func (MultiPoint) Cap 

func (mp MultiPoint) Cap() int

func (MultiPoint) Clip 

func (mp MultiPoint) Clip(b Bound) Geom

func (MultiPoint) DataType 

func (MultiPoint) DataType(driverName string) string

func (MultiPoint) DrawFeature 

func (mp MultiPoint) DrawFeature(w *mvt.FeatureWriter)

func (MultiPoint) Equal 

func (mp MultiPoint) Equal(g Geom) bool

func (MultiPoint) Geometry 

func (mp MultiPoint) Geometry() []uint32

func (MultiPoint) MarshalWKT 

func (mp MultiPoint) MarshalWKT(w *wkt.WKTWriter)

func (MultiPoint) Project 

func (mp MultiPoint) Project(transform Transform) Geom

func (*MultiPoint) Scan 

func (mp *MultiPoint) Scan(src interface{}) error

func (MultiPoint) ToGeom 

func (mp MultiPoint) ToGeom() Geom

func (MultiPoint) Type 

func (MultiPoint) Type() string

func (*MultiPoint) UnmarshalWKB 

func (mp *MultiPoint) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (MultiPoint) Value 

func (mp MultiPoint) Value() (driver.Value, error)

func (MultiPoint) ValueEx 

func (MultiPoint) ValueEx() string

type MultiPolygon 

type MultiPolygon []Polygon

func (MultiPolygon) Bound 

func (mp MultiPolygon) Bound() Bound

func (MultiPolygon) Cap 

func (mp MultiPolygon) Cap() int

func (MultiPolygon) Clip 

func (mp MultiPolygon) Clip(b Bound) Geom

func (MultiPolygon) DataType 

func (MultiPolygon) DataType(driverName string) string

func (MultiPolygon) DrawFeature 

func (mp MultiPolygon) DrawFeature(w *mvt.FeatureWriter)

func (MultiPolygon) Equal 

func (mp MultiPolygon) Equal(g Geom) bool

func (MultiPolygon) Geometry 

func (mp MultiPolygon) Geometry() []uint32

func (MultiPolygon) MarshalWKT 

func (mp MultiPolygon) MarshalWKT(w *wkt.WKTWriter)

func (MultiPolygon) Project 

func (mp MultiPolygon) Project(transform Transform) Geom

func (*MultiPolygon) Scan 

func (mp *MultiPolygon) Scan(src interface{}) error

func (MultiPolygon) ToGeom 

func (mp MultiPolygon) ToGeom() Geom

func (MultiPolygon) Type 

func (MultiPolygon) Type() string

func (*MultiPolygon) UnmarshalWKB 

func (mp *MultiPolygon) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (MultiPolygon) Value 

func (mp MultiPolygon) Value() (driver.Value, error)

func (MultiPolygon) ValueEx 

func (MultiPolygon) ValueEx() string

type Point 

type Point [2]float64

func (Point) Bound 

func (p Point) Bound() Bound

func (Point) Cap 

func (Point) Cap() int

func (Point) Clip 

func (p Point) Clip(bound Bound) Geom

func (Point) DataType 

func (Point) DataType(driverName string) string

func (Point) DrawFeature 

func (p Point) DrawFeature(w *mvt.FeatureWriter)

func (Point) Equal 

func (p Point) Equal(geom Geom) bool

func (Point) Geometry 

func (p Point) Geometry() []uint32

func (Point) IsZero 

func (p Point) IsZero() bool

func (Point) Lat 

func (p Point) Lat() float64

func (Point) Lon 

func (p Point) Lon() float64

func (Point) MarshalWKT 

func (p Point) MarshalWKT(w *wkt.WKTWriter)

func (Point) Project 

func (p Point) Project(transform Transform) Geom

func (*Point) Scan 

func (p *Point) Scan(src interface{}) error

func (Point) ToGeom 

func (p Point) ToGeom() Geom

func (Point) Type 

func (Point) Type() string

func (*Point) UnmarshalWKB 

func (p *Point) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (Point) Value 

func (p Point) Value() (driver.Value, error)

func (Point) ValueEx 

func (Point) ValueEx() string

func (Point) X 

func (p Point) X() float64

func (Point) Y 

func (p Point) Y() float64

type Polygon 

type Polygon []LineString

Polygon is a closed area. The first Polygon is the outer ring. The others are the holes. Each Polygon is expected to be closed ie. the first point matches the last.

func (Polygon) Bound 

func (p Polygon) Bound() Bound

func (Polygon) Cap 

func (p Polygon) Cap() int

func (Polygon) Clip 

func (p Polygon) Clip(b Bound) Geom

func (Polygon) DataType 

func (Polygon) DataType(driverName string) string

func (Polygon) DrawFeature 

func (p Polygon) DrawFeature(w *mvt.FeatureWriter)

func (Polygon) Equal 

func (p Polygon) Equal(g Geom) bool

func (Polygon) Geometry 

func (p Polygon) Geometry() []uint32

func (Polygon) MarshalWKT 

func (p Polygon) MarshalWKT(w *wkt.WKTWriter)

func (Polygon) Project 

func (p Polygon) Project(transform Transform) Geom

func (*Polygon) Scan 

func (p *Polygon) Scan(src interface{}) error

func (Polygon) ToGeom 

func (p Polygon) ToGeom() Geom

func (Polygon) Type 

func (Polygon) Type() string

func (*Polygon) UnmarshalWKB 

func (p *Polygon) UnmarshalWKB(r *wkb.WKBReader, order binary.ByteOrder, tpe wkb.GeometryType) error

func (Polygon) Value 

func (p Polygon) Value() (driver.Value, error)

func (Polygon) ValueEx 

func (Polygon) ValueEx() string

type Transform 

type Transform func(point Point) Point

Source Files

View all Source files

Directories

Path Synopsis
encoding
geojson
mvt
mvt/vector_tile
wkb
wkt

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