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Sourcecode: octave-nurbs version File versions  Download package

vecroty.m

function ry = vecroty(angle)
% 
% VECROTY: Transformation matrix for a rotation around the y axis. 
% 
% Calling Sequence:
% 
%   ry = vecroty(angle);
% 
% Parameters:
% 
%   angle         : rotation angle defined in radians
% 
%   ry            : (4x4) Transformation matrix.
% 
% 
% Description:
% 
%   Return the (4x4) Transformation matrix for a rotation about the y 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 y-axis
% 
%    line = nrbline([0.0 0.0 0.0],[3.0 3.0 3.0]);
%    trans = vecroty(%pi/4);
%    rline = nrbtform(line, trans);
% 
% See:
% 
%    nrbtform

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

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

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