Is It possible to download offline Polygon shaped tile instead of rectangular size ?

[akunal1]

Hey,

I have to download thousands of area (small areas representing fields) from different regions. To minimize downloaded data I want to download Aras in its shape (polygon, triangular, square, etc...) .

But current <MapboxGL.offlineManager /> is only accepting 4 coordinate points. Do we have any options to accomplish this ?

Thanks.

[devWaleed]

You can use turf.js lineString along with bbox to make a square around your field. Then from that bbox, you can take its NE/SW coordinates and download tiles between those two coords only.

However since the zoom ranges are grouped, you will still be downloading a small amount of unnecessary tiles from server.

const lineStringArray = points?.map?.((p) => {
        return [p.longitude, p.latitude];
      });

      const line = lineString(lineStringArray);

      // Create a square box around line string
      const bounds = bbox(line);