[mkgmap-dev] Deformed polygons

Fri Jan 21 11:58:38 GMT 2022

Sadly, it is a feature of Garmin architecture.

Coordinates are held using up to 24bits (depending on the Level
parameters). With 24bits that gives a resolution of about 2.5metres.

Imagine drawing a map in a sheet of graph paper but the polygon and plyline
corners can only be where the grid lines intersect.

Other than changing the Level parameter to the maximum there is nothing you
can do.

On Fri, 21 Jan 2022 at 10:22, <mkgmap-dev-request at lists.mkgmap.org.uk>
wrote:

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>    1. Polygon deformation (Alexis Lecanu)
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> ---------- Forwarded message ----------
> From: Alexis Lecanu <alexis.lecanu.garmin at gmail.com>
> To: mkgmap-dev at lists.mkgmap.org.uk
> Cc:
> Bcc:
> Date: Fri, 21 Jan 2022 08:52:24 +0100
> Subject: [mkgmap-dev] Polygon deformation
> Hello, I'm contacting you because I can't understand why my polygons are
> deformed, I tried to find the options that could be the cause but nothing
> affects the polygons.
> Is it wanted directly in the algo?
> I see that simple shapes like a rectangle can become a triangle or a more
> complex polygon, it's a shame for the readability.
>
> Thank you in advance for your answer.
>
>
>
> ----
> Alexis LECANU
>
> https://www.facebook.com/Garmin-Connect-App-Alexis-Lecanu-395326794312827
>
> If you want to pay me a beer to thank me:
> https://ko-fi.com/alexislecanu
>
>
>
>
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