golang-geo

ある位置が複数の位置で囲った場所の中にあるかどうかを判定する

code:go

type Coordinate struct {

Latitude float64

Longitude float64

}

coordinates := []Coordinate{

{Latitude: 35.6804, Longitude: 139.7690},

...

}

points := make([]*geo.Point, 0, len(coordinates))

for _, co := range coordinates {

p := geo.NewPoint(co.Latitude, co.Longitude)

points = append(points, p)

}

polygon := geo.NewPolygon(points)

co := Coordinate{Latitude: 35.6789, Longitude: 139.2850}

isInside := polygon.Contains(geo.NewPoint(es.Latitude, es.Longitude))