<br />
<b>Warning</b>:  Trying to access array offset on value of type null in <b>/home/site/wwwroot/lib/plugins/move/action/rename.php</b> on line <b>42</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/site/wwwroot/lib/plugins/move/action/rename.php:42) in <b>/home/site/wwwroot/inc/Action/Export.php</b> on line <b>106</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/site/wwwroot/lib/plugins/move/action/rename.php:42) in <b>/home/site/wwwroot/inc/Action/Export.php</b> on line <b>106</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/site/wwwroot/lib/plugins/move/action/rename.php:42) in <b>/home/site/wwwroot/inc/Action/Export.php</b> on line <b>106</b><br />
====== Texture Index from Spherical Harmonics Parameters - Version 5 ======

	macro Texture_Index(sh, t)
    {
      prm = {
         fn f(c) {
            def s = Concat(sh,"_",c);
            return If(Prm_There(s), s^2,0); 
         }
         return 1 
         +1/5  (f(c20)+f(c21p)+f(c21m)+f(c22p)+f(c22m))
         +1/9  (f(c40)+f(c41p)+f(c41m)+f(c42p)+f(c42m)+f(c43p)+f(c43m)+f(c44p)+f(c44m))
         +1/13 (f(c60)+f(c61p)+f(c61m)+f(c62p)+f(c62m)+f(c63p)+f(c63m)+f(c64p)+f(c64m)+f(c65p)+f(c65m)+f(c66p)+f(c66m))
         +1/17 (f(c80)+f(c81p)+f(c81m)+f(c82p)+f(c82m)+f(c83p)+f(c83m)+f(c84p)+f(c84m)+f(c85p)+f(c85m)+f(c86p)+f(c86m)+f(c87p)+f(c87m)+f(c88p)+f(c88m));
      } : t
   }


==== Usage ====


   str…
      PO_Spherical_Harmonics(sh, 8)
      Texture_Index(sh, 0)

On termination of refinement the second argument of the Texture_Index macro is updated.