the_happy_koala

3 ms·

1. 1.▲
   by the_happy_koala 7y ago

   Aww, thanks for sharing. If anyone has any questions, let me know and I would be very happy to answer them!
2. 2.▲
   by the_happy_koala 8y ago

   That's the intention!
3. 3.▲
   by the_happy_koala 8y ago

   Can't stop myself from staring at those modulating peaks; hypnotizing stuff! Leapfrog integration, as foxes pointed out, is not symplectic if you apply an adaptive time step. I'm not that concerned about the integrator being sympl
4. 4.▲
   by the_happy_koala 8y ago

   Hi Paul! Many thanks for your feedback! Implementing an integrator with an adaptive time step is on my bucket list of features that I intend to implement, as tweaking the time step manually, especially with the freaking slider, is somewhat
5. 5.▲
   by the_happy_koala 8y ago

   I just realized that I'm yet to properly introduce myself to you folks; name's Darrell (the Happy Koala - I love koalas the way other people seem to love cats!). I'm a self taught developer and the project this thread is conc
6. 6.▲
   by the_happy_koala 8y ago

   Orbiter, like magnetic pointed out, is probably what you're looking for! That having been said, I plan to introduce spacecraft that can be controlled by the user in a realistic manner at some point, although I want to get the physics (
7. 7.▲
   by the_happy_koala 8y ago

   Hi Pavel! Every body in the simulation start out with a set of initial position and velocity vectors. For the solar system scenarios, I got these vectors from NASA JPL's Horizon System ( https://ssd.jpl.nasa.gov/horizons
8. 8.▲
   by the_happy_koala 8y ago

   Thankie!
9. 9.▲
   by the_happy_koala 8y ago

   My CSS skills aren't what they should be, but I'm going to try to make a mobile friendly version of the simulator at some point once I know more about flexboxes, media queries and what have you.
10. 10.▲
    by the_happy_koala 8y ago

    If for whatever reason you have time and would like to make a contribution, I think doing so should be quite easy as I think you'd just have to subclass the Euler class. You can get an idea of how to do this by looking at how I did it
11. 11.▲
    by the_happy_koala 8y ago

    I'm working on implementing an integrator with an adaptive time step, so that the time step is high when masses are far away from each other and just coasting, but low when they get close to each other and interesting things happen; th
12. 12.▲
    Show HN: Harmony of the Spheres – Gravity Simulator(thehappykoala.github.io)

    69 points by the_happy_koala 8y ago|26 comments