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vecrotx.m

function rx = vecrotx(angle)
% 
% VECROTX: Transformation matrix for a rotation around the x axis. 
% 
% Calling Sequence:
% 
%   rx = vecrotx(angle);
% 
% Parameters:
% 
%   angle         : rotation angle defined in radians
% 
%   rx            : (4x4) Transformation matrix.
% 
% 
% Description:
% 
%   Return the (4x4) Transformation matrix for a rotation about the x axis
%   by the defined angle.
% 
%   The matrix is:
% 
%         
%         
%         
%         
% 
% Examples:
% 
%    Rotate the NURBS line (0.0 0.0 0.0) - (3.0 3.0 3.0) by 45 degrees
%    around the x-axis
% 
%    line = nrbline([0.0 0.0 0.0],[3.0 3.0 3.0]);
%    trans = vecrotx(%pi/4);
%    rline = nrbtform(line, trans);
% 
% See:
% 
%    nrbtform

%  Dr D.M. Spink
%  Copyright (c) 2000.

sn = sin(angle);
cn = cos(angle);
rx = ;

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