Idea: delta-v and pork-chop diagrams

[irigi]

This is an idea for a feature I would find very interesting. Universe Sandbox is very scientifically accurate, so I thoght it would be nice to have a possibility to calculate delta-v maps between planets and moons of the system and maybe even pork-chop plots. Something like this:

https://i.imgur.com/AAGJvD1.png

http://www.projectrho.com/public_html/rocket/appmissiontable.php

http://flyonbudget.one-giant-leap.info/_downloads/bg_pic-chap6-delta-v-plot.jpeg

https://en.wikipedia.org/wiki/Porkchop_plot

It would be very useful for anybody who intents to model a star system for his science fiction novel (if there are low-tech spaceships), or is just interested in worldbuilding.

Anyway, this is just an idea. Otherwise the game is great, thank you very much for developing it!