GEANT321/gdraw/gdeltu.F

   1 *
   2 * $Id$
   3 *
   4 * $Log$
   5 * Revision 1.1.1.1  1995/10/24 10:20:23  cernlib
   6 * Geant
   7 *
   8 *
   9 #include "geant321/pilot.h"
  10 *CMZ :  3.21/02 29/03/94  15.41.26  by  S.Giani
  11 *-- Author :
  12       SUBROUTINE GDELTU(A,B,Z0)
  13 C.
  14 C.    ******************************************************************
  15 C.    *                                                                *
  16 C.    *       Draw an ellipse of semi-axes A and B centered            *
  17 C.    *       on Z-axis,at a distance of Z0 from the origin,           *
  18 C.    *       on a plane parallel to X-Y plane                         *
  19 C.    *                                                                *
  20 C.    *    ==>Called by : GDRAWS                                       *
  21 C.    *       Author : A.Solano                                        *
  22 C.    *                                                                *
  23 C.    ******************************************************************
  24 C.
  25 #include "geant321/gcdraw.inc"
  26       DIMENSION X(3,41),U(41),V(41)
  27 C.
  28 C.    ------------------------------------------------------------------
  29 C.
  30       IF (A.LT.0.0001.AND.B.LT.0.0001) GO TO 999
  31 C
  32       DO 10 I=1,40
  33         X(1,I)=A*GCOS(I)
  34         X(2,I)=B*GSIN(I)
  35         X(3,I)=Z0
  36    10 CONTINUE
  37 C
  38       CALL GDFR3D(X,40,U,V)
  39 C
  40 CM             Short circuit in case of GMR
  41 C
  42       IF ( IGMR .NE. 0 ) GO TO 999
  43 CM
  44       U(41)=U(1)
  45       V(41)=V(1)
  46       CALL GDRAWV(U,V,41)
  47 C
  48   999 RETURN
  49       END
  50