This is all just the beginning, and we have a lot more planned for the future of the project. For instance, the super novas are quite impressive visually. We can now leverage the latest graphics and shader tech to do things like glowing craters, variable water levels, and all manner of eye candy. We even support a large number of integration modes, and the entire system is configurable. As well the base gravity simulation is more stable, accurate, and faster. We now simulate climate on planets, stellar evolution for stars, internal material compositions, water level, material phases, detailed physics of bodies impacting, including cratering, shockwaves, land deformation and surface heating. It has a custom physics engine as well, that allows us to do things like multi-threading and even leverage the power of a GPU if it supports OpenCL. Universe Sandbox ² is completely redone from the ground up in a new game engine (Unity 3D). It was limited quite a bit by the technology it was built on, and it only worked on certain platforms. The developers seem interested in incorporating some GR concepts, like gravity propagating at the speed of light, spinning black holes and ways to better approximate GR.The original Universe Sandbox is mostly a gravity simulator, written primarily by Dan. Still, Newtonian physics can get the job done for the most part. Accurate general relativity simulations require supercomputers. They would start with some initial data of the shape of spacetime and then see how it evolves according to the Einstein equations, which are 10 highly non-linear partial differential equations. Instead of simulating N number of bodies, they would be simulating a huge number of points. That is, taking your simulation space, discretizing it to a hi-res 3-D grid and checking the effect that each and every point in that grid has on all neighboring points at every timestep. General relativity requires simulating the spacetime itself. Newtonian physics just requires n-body mechanics, so it is much easier to implement. However, Universe Sandbox 2 uses 300-year old Newtonian physics, rather than general relativity. If you want to simulate day-long events, like planets crashing, it might be better. Means that if you want to simulate the Solar System over a long period of time, it won't be very accurate. The slower the time, the more accurate the calculations. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Space Engine. Space Engine alternatives are mainly Star Maps but may also be Open World Games or Sandbox Games. Its accuracy degrades as you increase the flow of time. Other interesting Mac alternatives to Space Engine are Celestia, Universe Sandbox, Gaia Sky and Solar System Scope.
Not sure if these kinds of questions are allowed here, but I may as well answer it.
0 kommentar(er)
