Periodic2D: removal of checkInterfaceOverlapping(). Method was carried to Model due to new comprehension of the capture of tip nodes. Model: method to set tip nodes and inner pbc nodes was implemented. script mainAnnularPBC was also added to test annular PBC. Simulator: setFintPBC() and kappa were modified in the pointers. Code solved for the very first iteration, but needs improvement. out_of_range somewhere.