%%%%%%%%%%%%%%%%%%%%% Plotting of Geodesic Segment %%%%%%%%%%%%%%%%%%%%%
%
% PLOTRAYU
% Usage: PLOTRAYU(x,u,d,col)
% Inputs:  x = basepoint of ray  
%          u = direction of ray, 
%          d - hyperbolic distance to plot the segment
%          col - plotting color 
%
% Outputs: the hyperbolic geodesic arc from P in the direction u 
%          is constructed for a hyperbolic distance of d 
%          the hyperbolic geodesic arc based at P in the direction u 
%          and plotted  

function re = plotrayu(x,u,d,col)             
   w = georayu(x,u,d);
   plot(real(w),imag(w),[col '-']);
   re = w(length(w));
   clear w;