// PathToGeoJSON ..
func (t Tracker) PathToGeoJSON(path []geo.Point) (string, error) {
fc := new(gj.FeatureCollection)
// Start marker
var p *gj.Feature
start := new(gj.Point)
start.Type = `Point`
c := new(gj.Coordinate)
c[0] = gj.Coord(path[0].Lng)
c[1] = gj.Coord(path[0].Lat)
start.Coordinates = *c
// Path line
var f *gj.Feature
line := new(gj.LineString)
line.Type = `LineString`
//var cordinates gj.Coordinates
for _, p := range path {
coord := new(gj.Coordinate)
coord[0] = gj.Coord(p.Lng)
coord[1] = gj.Coord(p.Lat)
line.AddCoordinates(*coord)
//cordinates = append(cordinates, *coord)
}
//line.AddCoordinates(cordinates)
fmt.Println(line.Type)
f = gj.NewFeature(line, nil, nil)
p = gj.NewFeature(start, nil, nil)
fc.AddFeatures(f, p)
fc.Type = `FeatureCollection`
geojson, e := gj.Marshal(fc)
return geojson, e
}
// Feature returns the Node as a *geojson.Feature.
func (n *Node) Feature() (f *geojson.Feature) {
// Set the properties.
properties := make(map[string]interface{}, 6)
properties["OwnerName"] = n.OwnerName
properties["Status"] = n.Status
if len(n.Contact) != 0 {
properties["Contact"] = n.Contact
}
if len(n.PGP) != 0 {
properties["PGP"] = n.PGP.String()
}
if len(n.Details) != 0 {
properties["Details"] = n.Details
}
if n.SourceID != 0 {
properties["SourceID"] = n.SourceID
}
// Create and return the feature.
return geojson.NewFeature(
geojson.NewPoint(geojson.Coordinate{
geojson.CoordType(n.Longitude),
geojson.CoordType(n.Latitude)}),
properties,
n.Addr)
}
func SpaceToFeature(space Space) *geojson.Feature {
infra := spaceToInfra(space)
lng := geojson.CoordType(infra.Point_.Lng)
lat := geojson.CoordType(infra.Point_.Lat)
c := geojson.Coordinate{lng, lat}
geom := geojson.NewPoint(c)
prop := map[string]interface{}{spaceValueName: infra.Value_, "createAt": infra.CreateAt_.Unix()}
return geojson.NewFeature(geom, prop, nil)
}
func EncodeMultiPointsIntoLineString(points []*Point) *geojson.Feature {
var coordinates = make(geojson.Coordinates, len(points))
for i := range points {
var c geojson.Coordinate
c[0] = geojson.CoordType(points[i].Lng)
c[1] = geojson.CoordType(points[i].Lat)
coordinates[i] = c
}
lineString := geojson.NewLineString(coordinates)
return geojson.NewFeature(lineString, nil, nil)
}
func EncodeMultiPointsIntoFeature(points []*Point) *geojson.Feature {
var coordinates = make(geojson.Coordinates, len(points))
for i := range points {
var c geojson.Coordinate
c[0] = geojson.CoordType(points[i].Lng)
c[1] = geojson.CoordType(points[i].Lat)
coordinates[i] = c
}
multiPoint := geojson.NewMultiPoint(coordinates)
return geojson.NewFeature(multiPoint, nil, nil)
}
/**
* or free docks, or an error if that was not possible.
* @see getFreeDocksNear
* @see getBikesNear
*/
func writeDockingStations(w http.ResponseWriter, r *http.Request, filter_type string) {
lat, _ := strconv.ParseFloat(r.URL.Query().Get("lat"), 64)
lon, _ := strconv.ParseFloat(r.URL.Query().Get("lon"), 64)
x0, _ := strconv.ParseFloat(r.URL.Query().Get("x0"), 64)
y0, _ := strconv.ParseFloat(r.URL.Query().Get("y0"), 64)
x1, _ := strconv.ParseFloat(r.URL.Query().Get("x1"), 64)
y1, _ := strconv.ParseFloat(r.URL.Query().Get("y1"), 64)
var dockingStations DockingStations
var err error
var ret []byte
if filter_type == "bikes" {
err = dockingStations.GetBikesNear(lat, lon, 4)
}
if filter_type == "freedocks" {
err = dockingStations.GetBikesNear(lat, lon, 4)
}
if filter_type == "stations" {
err = dockingStations.GetStationsInside(x0, y0, x1, y1)
}
if err == nil {
features := []*gj.Feature{}
for _, dockingStationStatus := range dockingStations.DockingStationStatuses {
properties := map[string]interface{}{"name": dockingStationStatus.Name, "i": dockingStationStatus.DockId, "bikes": dockingStationStatus.Bikes, "docks": dockingStationStatus.Docks, "updated": dockingStationStatus.Time}
lat, _ := strconv.ParseFloat(dockingStationStatus.Lat, 64)
lon, _ := strconv.ParseFloat(dockingStationStatus.Lon, 64)
p := gj.NewPoint(gj.Coordinate{gj.CoordType(lon), gj.CoordType(lat)})
f := gj.NewFeature(p, properties, nil)
features = append(features, f)
}
ret, err = json.Marshal(features)
}
if err != nil {
//@todo set return code
logger.Log("msg", "There was an error retrieving docking stations", "err", err)
w.Header().Set("Content-Type", "application/json")
w.Write([]byte("{msg: \"There was an error\"}"))
return
}
w.Header().Set("Server", "bikefinder")
w.Header().Set("Content-Type", "application/json")
w.Write(ret)
}
func makeFeaturefromRecord(r *Record) string {
var f *gj.Feature
lon := gj.Coord(r.Longitude)
lat := gj.Coord(r.Latitude)
p := gj.NewPoint(gj.Coordinate{lon, lat})
id := r.BusID
props := make(map[string]interface{})
props["BusName"] = r.BusName
props["RouteID"] = r.RouteID
props["TripID"] = r.TripID
props["TripHeadsign"] = r.TripHeadsign
props["Service"] = r.Service
props["LocationUpdated"] = r.LocationUpdated
f = gj.NewFeature(p, props, id)
gjstr, err := gj.Marshal(f)
if err != nil {
log.Fatal("geojson marshall failed", err)
}
return gjstr
}