Line Segment with a Current

%% Line Segment with a Current
% Determines the magnetic field of a line segment that bends at a point

% Constants
muNaught = (4*pi)*10^-7 ;                %[T*m/A] Vacuum Permeability

% Inputs and Variables
I = input('What is the current?\n');
d = input('What is the distance from the point to the horizon line\n');
opp = input('Vector component that is parallel to the horizon line\n');

% Outputs and Equations
hyp = sqrt(opp^2+d^2);
B = (1+opp/hyp)*muNaught*I/(4*pi*d);
fprintf('The magnitude of the field is %.3e T', B)

%{
If the point is not under the line segment then when the program asks for
    the 'vector component that is parallel to the horizon', the user should
    enter the negative value
Assumes the line segment is in two parts. One part is long like the horzion
     and the other part is bent off like ran into something.
If you were to draw a vector coming out of the point that is directed at
    the 'bent corner' of the line segment, the component that is parallel
    to the horizon line will be the variable 'opp'. To check if your vector
    is drawn correctly, the other component should be parallel to the
    distance vector 'd'.
%}