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neXenio / BLE-Indoor-Positioning

Multilateration using bluetooth beacons
Apache License 2.0
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Help ! How exactly is the UI for map is working. #152

Closed Keyurkariya closed 4 years ago

Keyurkariya commented 5 years ago

I am trying to build an android application which will map all the beacons along with the location of the person. I am scanning the beacons with AltBeacon Library and have successfully obtained the X,Y coordinates of the person. But i have no clue as to how to map this and show a live visual representation of this.

So currently i have the X,Y coordinates of all beacons which are not exactly lat long but some random values like (0,0) (1,1) etc. And i am finding the distance using altbeacon library from the nearest beacons and calculating the centroid and also getting a X,Y coordinate. Do help to build a UI representation of beacons and the person on an indoor map layout.

Steppschuh commented 5 years ago

Drawing a map on canvas is not an easy task. You will have to deal with projections and quite a bit of math. Please refer to PR #90 to get an idea for how the map view is implemented.

I guess you'll need to find a way to get the actual geo-coordinates from the beacons you are using.

Keyurkariya commented 5 years ago

I can get the geo-coordinates using GPS Logger, prior to running the application and which relatively will calculate the Coordinates for User using Trilateration. Will this work ?

Steppschuh commented 5 years ago

Doing that is exactly the point of this library.

Keyurkariya commented 5 years ago

But the scanning of BLE Beacons and finding the distance is very complexly done here

Steppschuh commented 5 years ago

Scanning is not part of this library, because there are sophisticated libraries available for that (as mentioned in the readme). Finding the distance is as complex as calling beacon.getDistance() (as mentioned in the readme).

Keyurkariya commented 5 years ago

Okay, so can you guide me how to find the (x,y) coordinate of the user, after i found all the beacons around me along with their distances and are stored in a hashmap. Also where exactly to store the Lat longs of the beacons attached in the area.