*raypathsave.way
出自 DDCC TCAD TOOL Manual
This file output the photon path. The format is
Photon_number Numofstop_points x(1) y(1) vx(1) vy(1) x(2) y(2) vx(2) vy(2) x(3) y(3) vx(3) vy(3) .... x(N) y(N) vx(N) vy(N) Photon_number2 Numofstop_points2 x(1) y(1) vx(1) vy(1) x(2) y(2) vx(2) vy(2) x(3) y(3) vx(3) vy(3) .... x(N2) y(N2) vx(N2) vy(N2) .... repeat until all photons are saved