I've learned today what isochrone maps are but now I sort of want to combine two isochrone so that a line forms right where the maps meet in the middle time wise.
As in, if each point travels the same amount of time then where will they meet? Under the assumption that each travels the furthest distance. That could be clockwise and counter clockwise.
On top of that it would be nice if of each "point" traveling could start at a different time and/or speed.