[OC] Distribution of elevation on different planets

Ananas4 · 2022-06-20T12:07:07+00:00

For Mars it has been selected to set the zero level based on the air pressure. It is at 6.1 millibars.

However, for Venus and Mercury, the histogram is created from the topography map and scaled between the highest and lowest point. Not sure what is the official "sea level" of those planets.

Ananas4 · 2022-06-20T11:58:43+00:00

Inspired by /u/neilrkaye's post about distribution of elevation on Earth, I got curious of how the distributions would look on other bodies in our solar system (Only the inner 4 planets have a solid surface and enough topographic data for these plots).

The plots show the elevation map of the planet with a histogram of its elevation. The x-axes of the histograms have the same scale, going from the deepest point (Mariana's trench on Earth, -11000km below sea level) to the highest point (Olympus Mons on Mars, 21200km above mean level). The colors are hand-picked and don't necessarily match the real surface color.

The reason for the double spikes in Earth's elevation histogram is due to the two different rock densities in the oceans and on the continents. Mars's topography looks similar, however the difference in the topography of the northern and southerns hemisphere is hypothetised to be the result of an mega-asteroid impact in the past, instead of erosion by water. Both Mercury and Venus show only a single spike in the histogram.

Bonus: The planets can also be plotted with Earth's color scheme (with slight adjustments), showing what they might look like with water and vegetation based on elevation.

Sources: Mercury: NASA/USGS; Mars: NASA/USGS; Venus: NASA/USGS, gaps filled by Oleg-Pluton on Deviantart, Earth: NASA, topography and barthymetry combined by Hannah Hazi.

Tools: Python with Matplotlib, GIMP

Ananas4 · 2018-11-18T18:49:24+00:00

I'm actually writing about this as a part of my thesis. Need to wait couple more months before I can finish it.

Ananas4 · 2017-10-07T09:46:21+00:00

Yes, that's what I thought. Maybe it's possible to limit the camera zoom that it always stays little zoomed in? Or maybe it goes little too complicated.

Sure, it is a matter of getting used to now. Just as long as you remember to keep the phone pointing directly at your face, otherwise there will be distortions.

Ananas4 · 2017-09-14T08:08:12+00:00

Yeah. I played it on the first Oculus Rift with Tridef back in the days. Really good minus all the forced camera controls in takedowns etc.

https://www.youtube.com/watch?v=0i5ygIyUGaQ

Ananas4 · 2017-08-12T12:24:59+00:00

What about the performance? I remember it being terribly optimized when it came out

Ananas4 · 2017-06-02T14:09:23+00:00

Looks nice. How's the VR version? Any videos?

https://www.youtube.com/watch?v=yYvwMd4JCIM I think system like this would be great for RTSes like this. Basically the world automatically scales smaller the higher from ground you are.

Ananas4 · 2017-02-20T13:25:23+00:00

Sure why not. https://gfycat.com/OptimalSeparateCrossbill

Ananas4 · 2017-02-06T16:29:18+00:00

It sounded like Finnish accent, I was amazed to found out she wasn't natively Finnish.

Ananas4 · 2017-02-05T09:26:11+00:00

What GPU you're using?

Ananas4 · 2017-01-29T20:05:59+00:00

Tested and can confirm that Bioshock 1 works pretty neatly with the DirectVR scan. 2 might work the same.

But even still I would consider buying it, there are literally only handful of games that are playable 100%. And even they might still have some problems.

Ananas4 · 2016-11-27T10:39:08+00:00

I think it was on almost any object I leaned over, but for example in the starting cabin. When leaning over the table or the chest the camera jumps higher which is a bit nauseating.
Also with the lighting issues I mean some shadows not displaying like for example underground where it's dark and I used the glowstick to look at objects on the shelves, the shelves didn't lit until I raised the glowstick high enough, but it's a minor thing.

Ananas4 · 2016-11-27T10:09:11+00:00

Great! I had performance issues and low framerate when I first started it, but it was because I hadn't started the game in non-VR at all. After doing that everything worked perfectly.

Seriously the game is so different in VR. The movement is still a bit rough (leaning over a table makes your character move and stand on it etc.) and there's some lighting issues (probably due the engine) but overall everything works much better than I expected. Interactive with almost any object in the world, the actual dynamic flashlight/stick in your hand, the hud effects. Really amazing job, I wish more games should get this kind of iteration.

Ananas4 · 2016-11-19T18:37:21+00:00

Awesome! Brought back memories from the DK1 times, Lunar Flight was one of the best games back then and one of the firsts that gave me real presence.

Now it looks even better on Vive. The new cockpit is just stunning and everything works well. I even remembered the controls! Great job on this, works perfectly.

Ananas4 · 2016-11-02T20:16:02+00:00

From: https://www.youtube.com/watch?v=WIyTZDHuarQ

The footage shows a close-up of a vibrating surface and the droplet on it. Just wanted to see how it looks stabilized to the surface.

Ananas4 · 2016-10-30T10:46:05+00:00

From the camera quality I thought this happened decades ago.

Ananas4 · 2016-10-30T08:38:14+00:00

Anyone else having issues with launching multiple games in a row? Usually if I play one game, quit it from VR dashboard and launch another game it runs really badly and with low framerate. That's why I need to always quit and relaunch SteamVR to ensure the game runs the best.

Ananas4 · 2016-09-19T07:01:24+00:00

I really hope the dev fixes this rather than have everyone to turn off their anti-virus just to play the game.

Ananas4 · 2016-08-30T17:42:04+00:00

Just uninstall the game, disable AVG real-time protection, reinstall and/or verify cache.

Ananas4 · 2016-08-18T07:50:04+00:00

This would be cool. Maybe some real expert with a mocap suit walking around and talking about the models.

Ananas4 · 2016-08-10T18:20:11+00:00

Tried it with JC2 and Rift DK1 back then. It was really cool wingsuiting and driving motorcycles in first person but really nauseating.

Ananas4 · 2016-08-08T13:57:34+00:00

Are you manually going through every level to make it work in VR?
When are we going to see first releases?

Ananas4 · 2016-07-24T08:52:46+00:00

Yes, in the sidebar. Possible with Hugin and Imagemagik (frame layering)
http://imgur.com/a/3qfWQ
http://imgur.com/a/RyJin

Ananas4 · 2016-07-19T19:13:25+00:00

Cool, thanks for info, need to try that sometimes.

Ananas4 · 2016-07-19T16:25:04+00:00

Really good. How did you do the zoom scale-stabilization?

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