C    Copyright(C) 1999-2020 National Technology & Engineering Solutions
C    of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
C    NTESS, the U.S. Government retains certain rights in this software.
C
C    See packages/seacas/LICENSE for details

      SUBROUTINE EXDSCT (MXND, XN, YN, LNODES, ANGLE, N1, XNEW, YNEW)
C***********************************************************************

C  SUBROUTINE EXCORN = CALCULATES A POSITION AN AVERAGE LENGTH AWAY
C                      FROM A DISSECTION NODE

C***********************************************************************

      DIMENSION XN (MXND), YN (MXND), LNODES (7, MXND), ANGLE (MXND)

      N0 = LNODES (2, N1)
      N2 = LNODES (3, N1)

C      XNEW = XN (N0) + XN (N2) - XN (N1)
C      YNEW = YN (N0) + YN (N2) - YN (N1)

      PID2 = 0.5 * ATAN2(0.0, -1.0)

      ANG = ATAN2 (YN (N0) - YN (N1), XN (N0) - XN (N1)) -
     &   (ANGLE (N1) - PID2)
C     &   (2. * ANGLE(N1) / 3.)
      DIST1 = SQRT ((YN (N2) - YN (N1)) **2 +  (XN (N2) - XN (N1)) **2)
      DIST2 = SQRT ((YN (N0) - YN (N1)) **2 +  (XN (N0) - XN (N1)) **2)
      DIST = (DIST1 + DIST2) * .5
      XNEW = DIST * COS (ANG) + XN (N1)
      YNEW = DIST * SIN (ANG) + YN (N1)

      RETURN

      END