* * $Id: gnex2.F,v 1.1.1.1 1995/10/24 10:20:57 cernlib Exp $ * * $Log: gnex2.F,v $ * Revision 1.1.1.1 1995/10/24 10:20:57 cernlib * Geant * * #include "geant321/pilot.h" #if defined(CERNLIB_OLD) *CMZ : 3.21/02 29/03/94 15.41.31 by S.Giani *-- Author : SUBROUTINE GNEXT (X, SNEXT, SAFETY) C. C. ****************************************************************** C. * * C. * SUBR. GNEXT (X, SNEXT, SAFETY) * C. * * C. * Computes SNEXT and SAFETY * C. * SNEXT (output) : distance to closest boundary * C. * from point X(1-3) along X(4-6) * C. * SAFETY (output) : shortest distance to any boundary * C. * * C. * Called by : User * C. * Authors : S.Banerjee, R.Brun, F.Bruyant * C. * * C. ****************************************************************** C. #include "geant321/gcbank.inc" #include "geant321/gconsp.inc" #include "geant321/gcshno.inc" #include "geant321/gctmed.inc" #include "geant321/gcvolu.inc" #if defined(CERNLIB_USRJMP) #include "geant321/gcjump.inc" #endif REAL X(6), X0(3), XC(6), XT(6) INTEGER IDTYP(3,12) LOGICAL BTEST SAVE IDTYP C. DATA IDTYP / 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 2, 3, 1, + 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 4, 3, 1, 1, 1, + 2, 3, 1, 2, 3, 1/ C. C. ------------------------------------------------------------------ * * *** Transform current point and direction into local reference system * IF (GRMAT(10,NLEVEL).EQ.0.) THEN DO 19 I = 1,3 XC(I) = X(I) -GTRAN(I,NLEVEL) XC(I+3) = X(I+3) 19 CONTINUE ELSE * (later, code in line) CALL GTRNSF (X, GTRAN(1,NLEVEL), GRMAT(1,NLEVEL), XC) CALL GROT (X(4), GRMAT(1,NLEVEL), XC(4)) ENDIF * * *** Compute distance to boundaries * SNEXT = BIG SAFETY = BIG JVO = LQ(JVOLUM-LVOLUM(NLEVEL)) ISH = Q(JVO+2) IF (Q(JVO+3).EQ.0.) GO TO 300 NIN = Q(JVO+3) IF (NIN.LT.0) GO TO 200 * * *** Case with contents positioned * ISEARC = Q(JVO+1) IF (ISEARC.GE.-1) GO TO 120 * * ** Contents are ordered by (dynamic) GSORD, select neighbours * JSB = LQ(LQ(JVO-NIN-1)) IAX = Q(JSB+1) NSB = Q(JSB+2) IF (IAX.LE.3) THEN CX = XC(IAX) INC = SIGN(1., XC(IAX+3)) ELSE CALL GFCOOR (XC, IAX, CX) IF (IAX.LE.5) THEN DR = XC(1)*XC(4) +XC(2)*XC(5) IF (IAX.EQ.5) DR = DR +XC(3)*XC(6) INC = SIGN(1., DR) ELSE IF (IAX.EQ.6) THEN INC = SIGN(1., XC(1)*XC(5)-XC(2)*XC(4)) ELSE INC = SIGN(1., XC(3)*(XC(1)*XC(4)+XC(2)*XC(5)) + -XC(6)*(XC(1)*XC(1)+XC(2)*XC(2))) ENDIF ENDIF IDIV = LOCATF (Q(JSB+3), NSB, CX) IF (IDIV.LT.0) IDIV = -IDIV IF (IAX.NE.6) THEN IF (IDIV.EQ.0) THEN IF (INC.LT.0.AND.IAX.LE.3) THEN SAFETY = Q(JSB+3) -CX GO TO 300 ENDIF IDIV = 1 ELSE IF (IDIV.EQ.NSB) THEN IF (INC.GT.0.AND.IAX.NE.7) THEN SAFETY = CX -Q(JSB+2+NSB) GO TO 300 ENDIF IDIV = NSB -1 ELSE IF (IAX.NE.7) THEN IF (INC.GT.0) THEN SAFETY = CX -Q(JSB+2+IDIV) ELSE SAFETY = Q(JSB+3+IDIV) -CX ENDIF ELSE SAFETY = 0. ENDIF ENDIF ELSE IF (IAX.EQ.6) THEN IF (IDIV.EQ.0) IDIV = NSB SAFETY = 0. ENDIF * IDIVL = 0 IDIVB = 0 JSC0 = LQ(JVO-NIN-2) 110 NCONT = IQ(JSC0+IDIV) * * ** Loop over (selected) contents * IF (NCONT.EQ.0) THEN IF (IDIV.EQ.IDIVL) GO TO 400 IDIV = IDIV +INC * (following statement for IAX=6, when division NSB is empty) IF (IDIV.GT.NSB) IDIV = 1 GO TO 110 ELSE ICONT = 1 JSCV = LQ(JSC0-IDIV) GO TO 140 ENDIF * 120 JNEAR = LQ(JVO-NIN-1) IF (ISEARC.GT.0) THEN #if !defined(CERNLIB_USRJMP) CALL GUNEAR (ISEARC, 2, XC, JNEAR) #endif #if defined(CERNLIB_USRJMP) CALL JUMPT4(JUNEAR,ISEARC, 2, XC, JNEAR) #endif IF (IQ(JNEAR+1).EQ.0) GO TO 300 ENDIF JNEAR = JNEAR +1 NNEAR = IQ(JNEAR) IF (IQ(JNEAR+1).NE.0) THEN INEAR = 1 ELSE INEAR = 2 ENDIF * 130 IN = IQ(JNEAR+INEAR) GO TO 150 * 140 IN = IQ(JSCV+ICONT) * 150 IF(IN.LE.0)GO TO 300 JIN = LQ(JVO-IN) IVOT = Q(JIN+2) JVOT = LQ(JVOLUM-IVOT) IROTT = Q(JIN+4) * IF (NLEVEL.GE.NLDEV(NLEVEL)) THEN * (case with JVOLUM structure locally developed) JPAR = LQ(LQ(JVOLUM-LVOLUM(NLDEV(NLEVEL)))) DO 169 ILEV = NLDEV(NLEVEL), NLEVEL IF (IQ(JPAR+1).EQ.0) THEN IF (ILEV.EQ.NLEVEL) THEN JPAR = LQ(JPAR-IN) ELSE JPAR = LQ(JPAR-LINDEX(ILEV+1)) ENDIF IF (JPAR.EQ.0) GO TO 170 ELSE IF (IQ(JPAR-3).GT.1) THEN JPAR = LQ(JPAR-LINDEX(ILEV+1)) ELSE JPAR = LQ(JPAR-1) ENDIF 169 CONTINUE JPAR = JPAR + 5 GO TO 180 ENDIF * (normal case) 170 NPAR = Q(JVOT+5) IF (NPAR.EQ.0) THEN JPAR = JIN +9 ELSE JPAR = JVOT +6 ENDIF * * * Compute distance to boundary of current content * 180 IF (IROTT.EQ.0) THEN DO 189 I = 1,3 XT(I) = XC(I) -Q(JIN+4+I) XT(I+3) = XC(I+3) 189 CONTINUE ELSE * (later, code in line) CALL GITRAN (XC, Q(JIN+5), IROTT, XT) CALL GRMTD (XC(4), IROTT, XT(4)) ENDIF * IACT = 2 ISHT = Q(JVOT+2) IF (ISHT.LT.5) THEN IF (ISHT.EQ.1) THEN CALL GNOBOX (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.2) THEN CALL GNOTRA(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.3) THEN CALL GNOTRA(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE) ELSE CALL GNOTRP (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ENDIF ELSE IF (ISHT.LE.10) THEN IF (ISHT.EQ.5) THEN CALL GNOTUB(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.6) THEN CALL GNOTUB(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.7) THEN CALL GNOCON(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.8) THEN CALL GNOCON(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.9) THEN CALL GNOSPH (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE CALL GNOPAR (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ENDIF ELSE IF (ISHT.EQ.11) THEN CALL GNOPGO (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.12) THEN CALL GNOPCO (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.13) THEN CALL GNOELT (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.14) THEN CALL GNOHYP (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE IF (ISHT.EQ.28) THEN CALL GSNGTR (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE,0) ELSE IF (ISHT.EQ.NSCTUB) THEN CALL GNOCTU (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE) ELSE PRINT *, ' GNEXT : No code for shape ', ISHT STOP ENDIF * IF (SAFE.LT.SAFETY) SAFETY = SAFE IF (SNXT.LT.SNEXT) THEN SNEXT = SNXT IF (ISEARC.EQ.-2) THEN IF (MOD(IQ(JSC0),2).NE.0) THEN IDIVB = IDIV ELSE DO 191 I = 1,3 X0(I) = XC(I) + SNXT*XC(I+3) 191 CONTINUE IF (IAX.LE.3) THEN IDIVB = LOCATF (Q(JSB+3), NSB, X0(IAX)) ELSE CALL GFCOOR (X0, IAX, CX) IDIVB = LOCATF (Q(JSB+3), NSB, CX) ENDIF IF (IDIVB.LT.0) IDIVB = -IDIVB IF (IDIVB.EQ.0) THEN IF (IAX.EQ.6) THEN IDIVB = NSB ELSE IDIVB = 1 ENDIF ELSE IF (IDIVB.EQ.NSB) THEN IF (IAX.NE.6) IDIVB = NSB - 1 ENDIF ENDIF ENDIF ENDIF * IF (ISEARC.EQ.-2) THEN IF (ICONT.EQ.NCONT) THEN IF (IDIVL.EQ.0) THEN IF (IDIVB.NE.0) THEN IF (IDIV.EQ.IDIVB) GO TO 300 IF (.NOT.BTEST(IQ(JVO),2)) THEN IDIVL = IDIVB GO TO 193 ENDIF ENDIF * * * Compute distance to boundary of current volume * JPAR = LQ(JGPAR-NLEVEL) IACT = 2 ISH = Q(JVO+2) IF (ISH.LT.5) THEN IF (ISH.EQ.1) THEN CALL GNBOX (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.2) THEN CALL GNTRAP (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE) ELSE IF (ISH.EQ.3) THEN CALL GNTRAP (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE) ELSE CALL GNTRP (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ENDIF ELSE IF (ISH.LE.10) THEN IF (ISH.EQ.5) THEN CALL GNTUBE (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE) ELSE IF (ISH.EQ.6) THEN CALL GNTUBE (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE) ELSE IF (ISH.EQ.7) THEN CALL GNCONE (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE) ELSE IF (ISH.EQ.8) THEN CALL GNCONE (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE) ELSE IF (ISH.EQ.9) THEN CALL GNSPHR (XC, Q(JPAR+1),IACT, SNEXT, SNXT, SAFE) ELSE CALL GNPARA (XC, Q(JPAR+1),IACT, SNEXT, SNXT, SAFE) ENDIF ELSE IF (ISH.EQ.12) THEN CALL GNPCON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.11) THEN CALL GNPGON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.13) THEN CALL GNELTU (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.14) THEN CALL GNHYPE (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.28) THEN CALL GSNGTR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,1) ELSE IF (ISH.EQ.NSCTUB) THEN CALL GNCTUB (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE PRINT *, ' GNEXT : No code for shape ', ISH STOP ENDIF * IF (SAFE.LT.SAFETY) SAFETY = SAFE IF (SNXT.LT.SNEXT) SNEXT = SNXT * * * Check wether other pseudo-divisions have to be scanned * DO 192 I = 1,3 X0(I) = XC(I) +SNXT*XC(I+3) 192 CONTINUE IF (IAX.LE.3) THEN IDIVL = LOCATF (Q(JSB+3), NSB, X0(IAX)) ELSE CALL GFCOOR (X0, IAX, CX) IDIVL = LOCATF (Q(JSB+3), NSB, CX) ENDIF IF (IDIVL.LT.0) IDIVL = -IDIVL IF (IDIVL.EQ.0) THEN IF(IAX.EQ.6)THEN IDIVL=NSB ELSE IDIVL=1 ENDIF ELSEIF (IDIVL.EQ.NSB)THEN IF(IAX.NE.6)IDIVL=NSB-1 ENDIF ELSE IF (IDIV.EQ.IDIVB) GO TO 400 ENDIF 193 IF ((IDIV-IDIVL)*INC.GE.0) GO TO 400 IDIV = IDIV +INC GO TO 110 ELSE ICONT = ICONT +1 GO TO 140 ENDIF ELSE IF (INEAR.EQ.NNEAR) GO TO 300 INEAR = INEAR +1 GO TO 130 ENDIF * * *** Case of volume incompletely divided * 200 JDIV = LQ(JVO-1) IAXIS = Q(JDIV+1) IVOT = Q(JDIV+2) JVOT = LQ(JVOLUM-IVOT) ISHT = Q(JVOT+2) * * ** Get the division parameters * IF (NLEVEL.LT.NLDEV(NLEVEL)) THEN JPARM = 0 ELSE * (case with JVOLUM structure locally developed) JPARM = LQ(LQ(JVOLUM-LVOLUM(NLDEV(NLEVEL)))) IF (NLEVEL.EQ.NLDEV(NLEVEL)) GO TO 215 DO 210 ILEV = NLDEV(NLEVEL), NLEVEL-1 IF (IQ(JPARM+1).EQ.0) THEN JPARM = LQ(JPARM-LINDEX(ILEV+1)) IF (JPARM.EQ.0) GO TO 215 ELSE IF (IQ(JPARM-3).GT.1) THEN JPARM = LQ(JPARM-LINDEX(ILEV+1)) ELSE JPARM = LQ(JPARM-1) ENDIF IF (ILEV.EQ.NLEVEL-1) THEN NDIV = IQ(JPARM+1) ORIG = Q(JPARM+2) SDIV = Q(JPARM+3) ENDIF 210 CONTINUE GO TO 220 ENDIF * (normal case) 215 NDIV = Q(JDIV+3) ORIG = Q(JDIV+4) SDIV = Q(JDIV+5) * * ** Look at the first and the last divisions only * 220 IDT = IDTYP(IAXIS, ISH) IF (IDT.EQ.1) THEN IN2 = 0 IF (XC(IAXIS).LT.ORIG) THEN IN = 1 ELSE IN = NDIV ENDIF ELSE IF (IDT.EQ.2) THEN R = XC(1)**2 + XC(2)**2 IF (ISH.EQ.9) R = R + XC(3)**2 R = SQRT(R) IN2 = 0 IF (ISH.EQ.5.OR.ISH.EQ.6.OR.ISH.EQ.9) THEN IF (R.LT.ORIG) THEN IN = 1 ELSE IN = NDIV ENDIF ELSE PRINT *, ' GNEXT : Partially divided ',ISH,IAXIS IN = 1 IF (NDIV.GT.1) IN2 = NDIV ENDIF ELSE IF (IDT.EQ.4) THEN IN2 = 0 RXY = XC(1)**2 + XC(2)**2 RXY = SQRT(RXY) IF (XC(3).NE.0.0) THEN THET = RADDEG * ATAN (RXY/XC(3)) IF (THET.LT.0.0) THET = THET + 180.0 ELSE THET = 90. ENDIF IF (THET.LE.ORIG) THEN IN = 1 ELSE IN = NDIV ENDIF ELSE PRINT *, ' GNEXT : Partially divided ',ISH,IAXIS IN2 = 0 IF (ISH.EQ.5.OR.ISH.EQ.7) THEN IN = 1 IF (NDIV.GT.1) IN2 = NDIV ELSE IF (XC(1).NE.0.0.OR.XC(2).NE.0.0) THEN PHI = RADDEG * ATAN2 (XC(2), XC(1)) ELSE PHI = 0.0 ENDIF IF (ISH.EQ.6.OR.ISH.EQ.8) THEN IF (PHI.LT.ORIG) THEN IN = 1 ELSE IN = NDIV ENDIF ELSE IN = 1 IF (NDIV.GT.1) IN2 = NDIV ENDIF ENDIF ENDIF * 225 IF (IDT.EQ.1) THEN DO 231 I = 1, 3 X0(I) = 0.0 231 CONTINUE X0(IAXIS) = ORIG + (IN - 0.5) * SDIV IF (ISH.EQ.4.OR.(ISH.EQ.10.AND.IAXIS.NE.1)) THEN CALL GCENT (IAXIS, X0) ENDIF DO 232 I = 1, 3 XT(I) = XC(I) - X0(I) XT(I+3) = XC(I+3) 232 CONTINUE ELSE IF (IDT.EQ.3) THEN PH0 = DEGRAD * (ORIG + (IN - 0.5) * SDIV) CPHR = COS(PH0) SPHR = SIN(PH0) DO 233 I = 1, 4, 3 XT(I) = XC(I)*CPHR + XC(I+1)*SPHR XT(I+1) = XC(I+1)*CPHR - XC(I)*SPHR XT(I+2) = XC(I+2) 233 CONTINUE ELSE DO 234 I = 1, 6 XT(I) = XC(I) 234 CONTINUE ENDIF * IF (JPARM.NE.0) THEN IF (IQ(JPARM-3).GT.1) THEN JPAR = LQ(JPARM-IN) ELSE JPAR = LQ(JPARM-1) ENDIF JPAR = JPAR + 5 ELSE JPAR = JVOT + 6 ENDIF * IACT = 2 IF (ISHT.LT.5) THEN IF (ISHT.EQ.1) THEN CALL GNOBOX (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.2) THEN CALL GNOTRA (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.3) THEN CALL GNOTRA (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE) ELSE CALL GNOTRP (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ENDIF ELSE IF (ISHT.LE.10) THEN IF (ISHT.EQ.5) THEN CALL GNOTUB (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.6) THEN CALL GNOTUB (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.7) THEN CALL GNOCON (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.8) THEN CALL GNOCON (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.9) THEN CALL GNOSPH (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE CALL GNOPAR (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ENDIF ELSE IF (ISHT.EQ.11) THEN CALL GNOPGO (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.12) THEN CALL GNOPCO (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.13) THEN CALL GNOELT (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.14) THEN CALL GNOHYP (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISHT.EQ.28) THEN CALL GSNGTR (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,0) ELSE IF (ISHT.EQ.NSCTUB) THEN CALL GNOCTU (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE PRINT *, ' GNEXT : No code for shape ', ISHT STOP ENDIF * IF (SAFE.LT.SAFETY) SAFETY = SAFE IF (SNXT.LT.SNEXT) SNEXT = SNXT * IF (IN2.NE.0) THEN IF (IN2.NE.IN) THEN IN = IN2 GO TO 225 ENDIF ENDIF * * *** Calculate SNEXT and SAFETY with respect to the Mother * *** SAFETY only for concave volumes if finite SNEXT * *** has been found with respect to one of its contents * 300 IACT = 2 IF (SNEXT.LT.0.9*BIG) THEN IF (.NOT.BTEST(IQ(JVO),2)) IACT = 0 ENDIF JPAR = LQ(JGPAR-NLEVEL) IF (ISH.LT.5) THEN IF (ISH.EQ.1) THEN CALL GNBOX (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE ) ELSE IF (ISH.EQ.2) THEN CALL GNTRAP (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.3) THEN CALL GNTRAP (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE) ELSE CALL GNTRP (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ENDIF ELSE IF (ISH.LE.10) THEN IF (ISH.EQ.5) THEN CALL GNTUBE (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.6) THEN CALL GNTUBE (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.7) THEN CALL GNCONE (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.8) THEN CALL GNCONE (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.9) THEN CALL GNSPHR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE CALL GNPARA (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ENDIF ELSE IF (ISH.EQ.12) THEN CALL GNPCON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.11) THEN CALL GNPGON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.13) THEN CALL GNELTU (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.14) THEN CALL GNHYPE (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE IF (ISH.EQ.28) THEN CALL GSNGTR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,1) ELSE IF (ISH.EQ.NSCTUB) THEN CALL GNCTUB (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE) ELSE PRINT *, ' GNEXT : No code for shape ', ISH STOP ENDIF * IF (SAFE.LT.SAFETY) SAFETY = SAFE IF (SNXT.LT.SNEXT) SNEXT = SNXT * 400 IF (GONLY(NLEVEL).EQ.0.) THEN * * *** Case of a 'NOT ONLY' volume -> step search * SAFETY = 0. EPSI2 = 0.5*EPSIL ST = SNEXT -EPSI2 IF (ST.LE.0) GO TO 999 EPSI3 = 10.*EPSIL IF (ST.LE.EPSI3) THEN NN = 1 ELSE NN = ST/EPSI3 +1 ST = ST/NN ENDIF * NBIN = 0 SN = 0. 420 SN = SN +ST DO 429 I = 1,3 XT(I) = X(I) +SN*X(I+3) 429 CONTINUE * CALL GINVOL (XT, ISAME) IF (ISAME.EQ.0) THEN IF (ST.LT.EPSI2) GO TO 490 SN = SN -ST ST = 0.5*ST NBIN = 1 GO TO 420 ENDIF * IF (NBIN.NE.0) THEN IF (ST.LT.EPSI2) THEN SN = SN +EPSI2 GO TO 490 ELSE ST = 0.5*ST GO TO 420 ENDIF ENDIF NN = NN -1 IF (NN.GT.0) GO TO 420 GO TO 999 * 490 IF (SN.LT.SNEXT) SNEXT = SN ENDIF * END GNEXT 999 END #endif