golang geo

sgeom

func main() {
    line0_str := "LINESTRING(116.40495300292967 39.926785883895654,116.3975715637207 39.9295502919)\n"
    line1_str := "LINESTRING(116.37310981750488 39.92099342895789,116.39928817749023 39.9174387253541)"
    line0, _ := sgeom.UnmarshalWKT(line0_str)
    line1, _ := sgeom.UnmarshalWKT(line1_str)
    fmt.Println(sgeom.Distance(line0, line1))
    line2, _:= line0.AsLineString()
    fmt.Println(line2.Coordinates())
}

tgeom

    geom3,_ := wkt.Unmarshal("LINESTRING (0 0, 7 7, 19 19)")
    li,_ :=geom3.(*tgeom.LineString)
    fmt.Println(li.FlatCoords())

package main


func main() {
    polygon := space.Polygon{{{116.39439582824706, 39.93284110825641},
        {116.38675689697266, 39.92494288320867}, {116.40563964843749, 39.93020846782819},
        {116.39439582824706, 39.93284110825641}}}
    line0 := space.LineString{{116.40495300292967, 39.926785883895654}, {116.3975715637207, 39.9295502919}}
    line1 := space.LineString{{116.37310981750488, 39.92099342895789}, {116.39928817749023, 39.9174387253541}}
    b1, _ := G.Intersects(polygon, line0)
    b2, _ := G.Intersects(polygon, line1)
    fmt.Println(b1, b2)

    buffer := G.Buffer(polygon, 2, 4)
    fmt.Println(wkt.MarshalString(buffer))

    fmt.Println(G.Contains(buffer,line0))

}