Implement three dimension billiards

[Datseris]

This is just an "official" issue about 3D billiards, which I had in my mind since a year now.

The main method of propagation used in 2D applies juuuust as well to 3D.

• 3DParticle
• Plane
• Sphere
• collisiontime between these
• distance between these
• specular/periodicity

this is all we need pretty much.

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[Datseris]

See : https://github.com/JuliaGeometry/RayTraceEllipsoid.jl

[yakir12]

Are you thinking about abandoning the 2D or will you keep both? Any thoughts on how to plot these?

[Datseris]

I won't abandon the 2D there is absolutely no reason to remove fine, well tested and well documented functionality ! The plan was to keep both, initially putting the 3D in a different module. If it becomes too big, put it in a different package, but once again: I am always against rushing into a new package "too fast".

[dpsanders]

Much of this is implemented in HardSphereDynamics.jl.

In 3d cylindrical objects (for example) are also important.