Android Question Google Maps Marker radius bounds

[prajinpraveen]

is there a way to get Latlong Bounds with a certain radius to a marker/postion on the map

 

[Erel]

I'm not sure that I understand the question. Are you trying to create a circle around a marker?

 

[prajinpraveen]

i want to findout all markers around a given marker/point within a set radius/distance

 

[Erel]

You can use Location.DistanceTo from the GPS library to calculate the distance between the two points. If the list of interesting points is not too large then just calculate the distance between the marker and all points each time.

 

[prajinpraveen]

thanks Erel, there are more than 500 custom points on the map. i would like to show only markers that are in 10km vicinity of the current location.
i was thinking if i could get the northeast and southwest (bounds) from the current location, i could run a query to find out the markers within the boundary.

 

[Erel]

Start simple. It takes 5 milliseconds to calculate the distance between a point and a list of 1000 points.

Sub Process_Globals
   Private allpoints As List
End Sub

Sub Service_Create
   allpoints.Initialize
   For i = 1 To 1000
     Dim loc As Location
     loc.Initialize
     loc.Latitude = Rnd(-90, 90)
     loc.Longitude = Rnd(-180, 180)
     allpoints.Add(loc)
   Next
   Dim n As Long = DateTime.Now
   Dim res As List
   res.Initialize
   Dim loc As Location
   loc.Initialize
   loc.Latitude = 30
   loc.Longitude = 30
   For Each p As Location In allpoints
     Dim dist As Double = p.DistanceTo(loc)
     If dist < 10000 Then res.Add(p)
   Next
   Log(DateTime.Now - n)
   Log(res)
End Sub

 

[prajinpraveen]

thank you, will do so