Allow other galaxy model

[Lecrapouille]

Hi ! It could be interesting to customize the code to allow creating other galaxy models (By the way, I did not find how to create initial galaxy inside your menu):

Here is a version "interactions_anti_newton" with negative masses: https://www.januscosmologicalmodel.fr/post/janus (French site but with US papers)
https://github.com/Lecrapouille/Janus/blob/master/data/shaders/model.cl#L26-L82

Called here:
https://github.com/Lecrapouille/Janus/blob/master/src/Computer.cpp#L135-L156

Galaxy created here:
https://github.com/Lecrapouille/Janus/blob/master/src/Computer.cpp#L19-L55

Concerning colours: it is important to give one colour by type of mass (I do not remember: let say red for -1 and green for +1).

From what I understand also, "home-made" simulation missed modelling cloud of dust, that create stars which makes change the simulation. I'm not a maths guy.

AFAIK my GPU is too old (GT710) and OpenCL probably not enough optimized. I cannot have quick simulations.

[NarcisCalin]

Hello. I'm not entirely sure what you exactly mean. What I plan in the future is creating a galaxy menu in which the users can modify a little more their initial conditions for the galaxies, Big Bang and other aspects. About how to create a galaxy, everything can be seen in the controls tab. Spawning galaxies is possible by pressing 1 and 2

[Lecrapouille]

You have certainly used this Newton formula: m gamma = mM/d^2. Here is an "anti-Newton" law |m| gamma = mM/d^2.

Where m and M are masses, d the distance, gamma the forces. Here m and M can be negative. Here my suggested steps:

• randomize mass of star: i.e. 80% of negative mass, 20% of positive mass.
• negative mass particles are green (or invisible color), positive mass particles are red. No temperature colour to apply.
• Apply the anti-Newtown formula.

Ok my key binding were different (French keyboard and numerical keys not taken). I cannot run one galaxy too slow with my saggy computer :(

[NarcisCalin]

I can experiment with it some day