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Getting a Polygon from a Location


If you are looking for documentation on Android SDK v3, please see here.

Some locations in MapsIndoors can have additional polygon information. These polygons can be used to render a room or area in a special way or make geofences, calculating whether another point or location is contained within the polygon. If a MPLocation has polygons, these can be retrieved using:

val geometry: MPGeometry = location.geometry
when (geometry.iType) {
MPGeometry.TYPE_POINT -> {
val point = geometry
MPGeometry.TYPE_POLYGON -> {
val polygon: MPPolygonGeometry = geometry as MPPolygonGeometry
// Using GMS helper classes
// Get all the paths in the polygon
val paths: List<List<MPLatLng>> = polygon.gmsPath
val pathCount = paths.size
// Outer ring (first)
val path = paths[0]
for (coordinate in path) {
val lat =
val lng = coordinate.lng
// Optional: Inner rings (holes)
var i = 1
while (i < pathCount) {
val hole = paths[i]
for (coordinate in hole) {
val lat =
val lng = coordinate.lng

As demonstrated above, a polygon's outer ring/path as well as holes are arranged as [longitude, latitude] pairs. As not all locations has polygons, the polygon array may be empty. On the contrary, some locations, like entire building floors, might have more than polygon.