Orbit Tessellation developer diary for Kerbal Space Program 2

1

Space Engine

#Space Simulator #Virtual Universe #Universe Simulator 122 social mentions

2

DuckDuckGo

> Simulating the bands of Jupiter is tricky but I've done some experiments with 2D fluids. Nice! I've always wanted to do some fluid dynamics on the surface of a sphere, but the math is too hard for me. I found a video on youtube where someone has done some interesting things a few years ago: https://www.youtube.com/watch?v=Lzagndcx8go&t=1s but there's very little information about it. Then there was what was done for the film 2010: The year we make contact" http://2010odysseyarchive.blogspot.com/2014/12/ I've had to resort to simpler means myself, which means faking it. I use OpenSimplex noise on the surface of a sphere, and from this I can find the gradient of the noise field tangent to the surface of the sphere, rotate this vector 90 degrees about an axis passing through the center of the sphere -- which is equivalent to some kind of spherical curl of the noise field -- which gives me a non-divergent velocity field. Because incompressible fluid flows are also non-divergent, there's a strong but superficial resemblance -- it <i>looks</i> like fluid flow, even though it is just an arbitrary process. Into this field, I dump a bunch of colored particles and let them flow around, painting alpha blended, slowly fading trails behind them onto the surface of a cube to be used later as textures of a cubemapped sphere. Results looks like this: https://duckduckgo.com/?q=gaseous-giganticus&t=h_&iax=images&ia=images This program is open source, it's here: https://github.com/smcameron/gaseous-giganticus.

#Search Engine #Web Search #Internet Search 1666 social mentions