polypoint | Indoor localization based on the DecaWave DW1000

I'm using Leaflet.js to save coverage maps and am giving the user the option of using polygons or circles.

To keep all objects in the same format, I'm converting the circle to a polygon before saving.

However, when I then reload the circle it is oval-shaped.

I know that this is due to the earth's curve but I'm unsure how to correct my method to take this into account? (I've looked but can't find anything that gives the solution I'm after).

The main issue is the javascript method I'm using below as that doesn't take into account the earth's curve.

I'm try to create a func that should calculate the coordinate at 90deg and 270deg from each of the given coordinate..

and save it in an array of arrayLocationOffset

I dont really know how to ask this question but I will do my best to explain. I have a project on arduino with a gps, I transfere the geo point via serialdata on my pc. I can read it without probleme, but where I need help is how I can draw a path of that point. for the moment I use this:

I'm developing a little game of nothing at all more commonly called "Pathfinding"; and I am crashing on a small error that I have never encountered (I am young dev);

I have searched everywhere but I do not understand why this error appears.

I am experiencing this error:

Uncaught TypeError: current.distance is not a function at search_min_distance (pathfinding.js:127) at game (pathfinding.js:151) at HTMLDocument. (pathfinding.js:173)

In my angualr project I have created the map with leaflet and created the circle of 5km radius with the coordinates coming from the backend.something like :

Can someone please suggest me the right way to update the transform points and custom control points of my custom polygon (draw by mouse move + click) after zoom or pan the canvas?

Step to reproduce:

1. click on Draw Polygon

2. draw a polygon in canvas

3. zoom (scroll up or down) or pan (alt + mouse drag)

Here is my code: https://jsfiddle.net/ckitisak/qv6y283p/

After I draw polygon i would like to change opacity of canvas out of polygon i just drawn. I think it might have something to do with clipping but im not sure. Polygon and lines inside should have 100% opacity but everything else (background and lines outside polygon should have 50% opacity)

I have problem about my gps and plot polygon

I collect GPS every second from

When I initialize my map, I would like to generate a polygon using as path the value stored into an input html field.