/[MITgcm]/MITgcm_contrib/high_res_cube/matlab-grid-generator/rotate_about_xaxis.m
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Contents of /MITgcm_contrib/high_res_cube/matlab-grid-generator/rotate_about_xaxis.m

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Revision 1.1.1.1 - (show annotations) (download) (vendor branch)
Tue Nov 11 18:08:08 2003 UTC (21 years, 8 months ago) by cnh
Branch: MAIN, initial
CVS Tags: baseline, HEAD
Changes since 1.1: +0 -0 lines 
Checking in work done with Dimitri on high-resolution cube gridding and parallel 
communications. 
   o code is in a contrib experiment for now so we can continue collaborating
     on it. However most code is general and will be moved into main branch once 
     it is fully hardened.
   o There are README files in the contrib root and in the subdirectories that
     explain the contents
1 function [X,Y,Z]=rotate_about_xaxis(lX,lY,lZ,angle);
2 % [X,Y,Z]=rotate_about_xaxis(lX,lY,lZ,angle);
3 % Rotate about X axis by "angle".
4
5
6 s=sin(angle);
7 c=cos(angle);
8 if c<1e-9
9 c=0;
10 s=sign(s);
11 end
12
13 X=lX;
14 Y=c*lY-s*lZ;
15 Z=s*lY+c*lZ;
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