This map tool makes you a map of the area you request, in which, always,
Also the tool can display a map of the direct way between two points (let's say NovosibirskBeijing or PalermoNovosibirsk), which looks like a curve in the conventional navigation tools (MSFS flight planner, Goodway, etc.)
This is a demo of a concept of the least distorted map. It uses a special way to build projections, which is not shown here, nor explained. You can buy the engine that makes these calculations.
When surfing in the map at a high scale, you may see it working slowly. What makes it slow is the current SVG rendering engine in your browser, not the calculation routine in my app.
Why SVG? It is an opened format, it can be edited and read with notepad.exe, it can be handled with JavaScript + DOM, just like another web page (in this app, scripts inside map and in the html page cross-call each other).
In the near future I want to add land and coordinates grid into the map to make it look better and understandable. (Note that coordinates grid will have to be a recursive calculation, since all the coordinates are dynamic here). I have no plans to make a javascript route-planning application, I'm not Google corporation to handle that much work alone.
Dmitri