Antenna and Trace minor fixes

RTX class/Antenna.m

@@ -19,7 +19,7 @@ classdef Antenna
             end
         end  
         
-        function [rays, complex_amplitudes] = generate_rays(obj, phi)
+        function [rays, complex_amplitudes] = generateRays(obj, phi)
             rays(size(phi, 2)) = Ray;
             for k = 1:size(phi, 2)
                 rays(k) = Ray(obj.position, [cos(phi(k)), sin(phi(k))]);

RTX class/Trace.m

@@ -3,7 +3,7 @@ classdef Trace < handle
     properties
         id;
         wavelength;
-        rays Ray = [];
+        rays Ray;
         length = +inf;
         init_phase = 0;