Save the propagation path

[Z-zhq]

Hi, may I save the path of each ray's propagation and use it when rerunning the code next time?

[kklmn]

Hi,

As written in the docs, "It should be stressed that accumulated are not rays, which would be limited by the physical memory, but rather the histograms from each run are summed up. In this way, the number of rays is unlimited."

That said, one can reuse previously stored beams instead of generating them by shine() or reflect() in run_process(). The implementation of saving/restoring is on you.