GEANT321/ggeom/grot.F

   1 *
   2 * $Id$
   3 *
   4 * $Log$
   5 * Revision 1.1.1.1  1995/10/24 10:20:54  cernlib
   6 * Geant
   7 *
   8 *
   9 #include "geant321/pilot.h"
  10 *CMZ :  3.21/02 29/03/94  15.41.30  by  S.Giani
  11 *-- Author :
  12       SUBROUTINE GROT(X,RMAT,XNEW)
  13 C.
  14 C.    ******************************************************************
  15 C.    *                                                                *
  16 C     *            ROUTINE TO ROTATE POINT X BY MATRIX RMAT TO         *
  17 C     *            FORM POINT XNEW.                                    *
  18 C     *                                                                *
  19 C.    *    ==>Called by : GNEXT, GTNEXT                                *
  20 C.    *         Author  A.McPherson  *********                         *
  21 C.    *                                                                *
  22 C.    ******************************************************************
  23 C.
  24       DIMENSION X(3),XNEW(3),RMAT(10)
  25 C
  26       IF(RMAT(10).NE.0.0) THEN
  27          XNEW(1) = X(1)*RMAT(1) + X(2)*RMAT(2) + X(3)*RMAT(3)
  28          XNEW(2) = X(1)*RMAT(4) + X(2)*RMAT(5) + X(3)*RMAT(6)
  29          XNEW(3) = X(1)*RMAT(7) + X(2)*RMAT(8) + X(3)*RMAT(9)
  30 *
  31       ELSE
  32          XNEW(1) = X(1)
  33          XNEW(2) = X(2)
  34          XNEW(3) = X(3)
  35 *
  36       ENDIF
  37       END