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git-svn-id: http://moon:8086/svn/matlab/trunk@99 801c6759-fa7c-4059-a304-17956f83a07c
2018-08-30 18:06:49 +00:00
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+## Copyright (C) 2016 Jens Ahrensfeld
+## 
+## This program is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 3 of the License, or
+## (at your option) any later version.
+## 
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+## 
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*- 
+## @deftypefn {Function File} {@var{retval} =} pt_eval (@var{input1}, @var{input2})
+##
+## @seealso{}
+## @end deftypefn
+
+## Author: Jens Ahrensfeld <ahrensfeld@w2ess001vm>
+## Created: 2016-11-04
+
+function pt_eval (vX, vY)
+
+if 0
+  k = sqrt(2)/1.5;
+  v = sqrt(vX^2 + vY^2);
+  nx = k*abs(vX)/v;
+  ny = k*abs(vY)/v;
+else
+  k = 1.0/1.5;
+  nx = k;
+  ny = k;
+end
+
+mot1 =  0.5*vX*nx + vY*ny
+mot2 = -0.5*vX*nx + vY*ny
+
+rotX = mot1 - mot2
+rotY = 0.5*(mot1 + mot2)
+vrot = sqrt(rotX^2 + rotY^2)
+endfunction