Changes

On each circle c (``c=1,...,nbcircles``), we will define some objects ``'o`` ' (``o=1,...,nbObjects[c]`) (called sometimes particles here), so the total number of objects is ``O = nbObjects[1] + nbObjects[2]+...+nbObjects[nbcircles]``. Each object ``o`` on circle ``c`` will have at time `t` the position `Position[c][o][t]`. This position, express as a number in [0,1] is a coordinate along the path `ThePath[c]`. The position at time 1 is chosen randomly along the path $c$ (line 13), and then will be calculated for each time `t` from the position at time `t-1` (line 18). Each object will have its own \type{deplacement}, which depends on the length of the circle modified by random factor (line 14). Lastly, to distinguish easily particles in the following figures, we will assign a random color to each one (line 16): `TheColor[c][o]`