     <span class="comment">%------------------------------------------------------------------</span>
        <span class="keyword">function</span> setDefaultProps(this)
            this.freq           = 1;
            this.done           = false;
            this.cutoff         = 0;
            this.verlet_dist    = inf;
            this.verlet_freq    = 100;
            this.auto_freq      = true;
            this.kinpp_sph      = BinKinematics_SphereSphere();
            this.kinpw_sph_line = BinKinemati