5 * Revision 1.1.1.1 1995/10/24 10:20:52 cernlib
9 #include "geant321/pilot.h"
10 #if !defined(CERNLIB_OLD)
11 *CMZ : 3.21/02 29/03/94 15.06.41 by S.Giani
13 SUBROUTINE GNEXT (X, SNEXT, SAFETY)
15 C. ******************************************************************
17 C. * SUBR. GNEXT (X, SNEXT, SAFETY) *
19 C. * Computes SNEXT and SAFETY *
20 C. * SNEXT (output) : distance to closest boundary *
21 C. * from point X(1-3) along X(4-6) *
22 C. * SAFETY (output) : shortest distance to any boundary *
24 C. * Called by : User *
25 C. * Author : S.Giani (1993) *
27 C. * This routine is now based on the new 'virtual divisions' *
28 C. * algorithm to speed up the tracking. *
29 C. * The tracking for MANY volumes is not anymore based on a step *
30 C. * search: it is now based on a search through the list of *
31 C. * 'possible overlapping volumes' built by GTMEDI. *
32 C. * Boolean operations and divisions along arbitrary axis are *
34 C. * Important notice: in case of MANY volumes, it might happen *
35 C. * that at the end of GNEXT the volume where X was found to *
36 C. * be is not anymore the current volume in GCVOLU (being the *
37 C. * tree ready for the volume where the particles is entering).*
38 C. * When this happens, the variable MYCOUN in the common block *
39 C. * PHYCOU is greater than one; the user can take the proper *
40 C. * actions (before calling GINVOL, for example) like restoring*
41 C. * the old tree: this is possible because GMEDIA has saved *
42 C. * the needed informations in MANYLE(NFMANY) (for nlevel), in *
43 C. * MANYNA(NFMANY,i) (for names(i)) and in MANYNU(NFMANY,i) *
44 C. * (for number(i)); this is sufficient to restore the old tree*
45 C. * by calling GLVOLU. *
47 C. ******************************************************************
49 #include "geant321/gcbank.inc"
50 #include "geant321/gconsp.inc"
51 #include "geant321/gcshno.inc"
52 #include "geant321/gctmed.inc"
53 #include "geant321/gcvolu.inc"
54 #if defined(CERNLIB_USRJMP)
55 #include "geant321/gcjump.inc"
57 #include "geant321/gchvir.inc"
58 #include "geant321/gcvdma.inc"
59 DIMENSION NUMTMP(15),NAMTMP(15)
60 dimension iarrin(500),cxm(3),xxm(6)
61 REAL X(6), X0(6), XC(6), XT(6)
66 DATA IDTYP / 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 2, 3, 1,
67 + 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 4, 3, 1, 1, 1,
70 C. ------------------------------------------------------------------
72 * *** Transform current point and direction into local reference system
80 401 IF (GRMAT(10,NLEVEL).EQ.0.) THEN
82 XC(I) = X(I) -GTRAN(I,NLEVEL)
86 * (later, code in line)
87 CALL GTRNSF (X, GTRAN(1,NLEVEL), GRMAT(1,NLEVEL), XC)
88 CALL GROT (X(4), GRMAT(1,NLEVEL), XC(4))
91 * *** Compute distance to boundaries
95 JVO = LQ(JVOLUM-LVOLUM(NLEVEL))
97 IF (Q(JVO+3).EQ.0.) GO TO 300
99 IF (NIN.LT.0) GO TO 200
101 * *** Case with contents positioned
110 clmoth=q(jvirt+4*(LVOLUM(NLEVEL)-1)+3)
111 chmoth=q(jvirt+4*(LVOLUM(NLEVEL)-1)+4)
112 ndivto=q(jvirt+4*(LVOLUM(NLEVEL)-1)+2)
113 iaxis =q(jvirt+4*(LVOLUM(NLEVEL)-1)+1)
119 divthi=(chmoth-clmoth)/ndivto
122 if(xc(iaxis+3).ge.0.)then
127 xvdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
129 if((xvdiv-ivdiv).lt.0.0001.and.inc.eq.-1)ivdiv=ivdiv-1
132 elseif(ivdiv.gt.ndivto)then
136 call gfcoor(xc,iaxis,cx)
138 dr= xc(1)*xc(4)+xc(2)*xc(5)
139 * if(dr.eq.0.)print *,'dr.eq.0.'
145 elseif(iaxis.eq.6)then
146 if((cx-clmoth).lt.-1.)then
148 elseif((cx-chmoth).gt.1.)then
153 elseif(cx.lt.clmoth)then
156 dfi=xc(1)*xc(5)-xc(2)*xc(4)
163 xvdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
165 if((xvdiv-ivdiv).lt.0.0001.and.inc.eq.-1)ivdiv=ivdiv-1
168 elseif(ivdiv.gt.ndivto)then
172 jvdiv=lq(jvirt-LVOLUM(NLEVEL))
173 112 iofset=iq(jvdiv+ivdiv)
174 jcont2=jvdiv+iofset+1
180 elseif(ncont.eq.1)then
185 idmi=iq(jcont2+ncont+1)
186 idma=iq(jcont2+ncont+2)
193 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
195 safety=min(safety,(cxold-cmin))
197 safefi=min(90.,(cxold-cmin))
198 saferr=sqrt(xc(1)**2+xc(2)**2)
199 safe22=saferr*sin(safefi)
200 safety=min(safety,safe22)
203 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
205 safety=min(safety,(cmax-cxold))
207 safefi=min(90.,(cmax-cxold))
208 saferr=sqrt(xc(1)**2+xc(2)**2)
209 safe22=saferr*sin(safefi)
210 safety=min(safety,safe22)
214 if(ncont.eq.0)goto 181
219 150 if(nin.gt.1.and.ncont.gt.1)then
224 if(.NOT.BTEST(iq(jin),4))then
233 if(iarrin(ll).eq.in)then
249 JVOT = LQ(JVOLUM-IVOT)
252 IF (NLEVEL.GE.NLDEV(NLEVEL)) THEN
253 * (case with JVOLUM structure locally developed)
254 JPAR = LQ(LQ(JVOLUM-LVOLUM(NLDEV(NLEVEL))))
255 DO 169 ILEV = NLDEV(NLEVEL), NLEVEL
256 IF (IQ(JPAR+1).EQ.0) THEN
257 IF (ILEV.EQ.NLEVEL) THEN
260 JPAR = LQ(JPAR-LINDEX(ILEV+1))
262 IF (JPAR.EQ.0) GO TO 170
263 ELSE IF (IQ(JPAR-3).GT.1) THEN
264 JPAR = LQ(JPAR-LINDEX(ILEV+1))
279 179 if((nin.eq.1).or.(nin.gt.1.and.llflag.eq.0))then
281 * * Compute distance to boundary of current content
283 180 IF (IROTT.EQ.0) THEN
285 XT(I) = XC(I) -Q(JIN+4+I)
289 * (later, code in line)
290 CALL GITRAN (XC, Q(JIN+5), IROTT, XT)
291 CALL GRMTD (XC(4), IROTT, XT(4))
298 CALL GNOBOX (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
299 ELSE IF (ISHT.EQ.2) THEN
300 CALL GNOTRA(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE)
301 ELSE IF (ISHT.EQ.3) THEN
302 CALL GNOTRA(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE)
304 CALL GNOTRP (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
306 ELSE IF (ISHT.LE.10) THEN
308 CALL GNOTUB(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE)
309 ELSE IF (ISHT.EQ.6) THEN
310 CALL GNOTUB(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE)
311 ELSE IF (ISHT.EQ.7) THEN
312 CALL GNOCON(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE)
313 ELSE IF (ISHT.EQ.8) THEN
314 CALL GNOCON(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE)
315 ELSE IF (ISHT.EQ.9) THEN
316 CALL GNOSPH (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
318 CALL GNOPAR (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
320 ELSE IF (ISHT.EQ.11) THEN
321 CALL GNOPGO (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
322 ELSE IF (ISHT.EQ.12) THEN
323 CALL GNOPCO (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
324 ELSE IF (ISHT.EQ.13) THEN
325 CALL GNOELT (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
326 ELSE IF (ISHT.EQ.14) THEN
327 CALL GNOHYP (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
328 ELSE IF (ISHT.EQ.28) THEN
329 CALL GSNGTR (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE,0)
330 ELSE IF (ISHT.EQ.NSCTUB) THEN
331 CALL GNOCTU (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
333 PRINT *, ' GNEXT : No code for shape ', ISHT
338 if(snxt.le.-prec)snxt=big
340 IF (SAFE.LT.SAFETY) SAFETY = SAFE
341 IF (SNXT.LT.SNEXT) THEN
347 elseif(nin.ge.1.and.ncont.gt.1)then
349 if(iii.le.ncont)goto 150
352 * * Compute distance to boundary of current volume
355 JPAR = LQ(JGPAR-NLEVEL)
360 CALL GNBOX (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
361 ELSE IF (ISH.EQ.2) THEN
362 CALL GNTRAP (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE)
363 ELSE IF (ISH.EQ.3) THEN
364 CALL GNTRAP (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE)
366 CALL GNTRP (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
368 ELSE IF (ISH.LE.10) THEN
370 CALL GNTUBE (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE)
371 ELSE IF (ISH.EQ.6) THEN
372 CALL GNTUBE (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE)
373 ELSE IF (ISH.EQ.7) THEN
374 CALL GNCONE (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE)
375 ELSE IF (ISH.EQ.8) THEN
376 CALL GNCONE (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE)
377 ELSE IF (ISH.EQ.9) THEN
378 CALL GNSPHR (XC, Q(JPAR+1),IACT, SNEXT, SNXT, SAFE)
380 CALL GNPARA (XC, Q(JPAR+1),IACT, SNEXT, SNXT, SAFE)
382 ELSE IF (ISH.EQ.12) THEN
383 CALL GNPCON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
384 ELSE IF (ISH.EQ.11) THEN
385 CALL GNPGON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
386 ELSE IF (ISH.EQ.13) THEN
387 CALL GNELTU (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
388 ELSE IF (ISH.EQ.14) THEN
389 CALL GNHYPE (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
390 ELSE IF (ISH.EQ.28) THEN
391 CALL GSNGTR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,1)
392 ELSE IF (ISH.EQ.NSCTUB) THEN
393 CALL GNCTUB (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
395 PRINT *, ' GNEXT : No code for shape ', ISH
400 if(snxt.le.-prec)snxt=big
402 IF (SAFE.LT.SAFETY) SAFETY = SAFE
403 IF (SNXT.LT.SNEXT) SNEXT = SNXT
406 if(idma.eq.ndivto.and.inc.gt.0)goto 400
407 cxm(1)=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
411 cxm(2)=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
414 call gntube(xxm,cxm,3,1,SNEXT,snxnew,safe)
417 if(snxtot.lt.SNEXT)then
418 xxm(1)=xxm(1)+snxnew*xxm(4)
419 xxm(2)=xxm(2)+snxnew*xxm(5)
420 xxm(3)=xxm(3)+snxnew*xxm(6)
421 call gfcoor(xxm,iaxis,cxnew)
422 xevdiv=((cxnew-clmoth)*ndivto/(chmoth-clmoth))+1
424 dr= xxm(1)*xxm(4)+xxm(2)*xxm(5)
425 * if(dr.eq.0.)print *,'dr.eq.0.'
431 if((xevdiv-ivdiv).lt.0.0001.and.inc.eq.-1)ivdiv=ivdiv-1
434 elseif(ivdiv.gt.ndivto)then
441 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
442 safety=min(safety,(cmax-cxold))
444 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
445 safety=min(safety,(cxold-cmin))
450 if(nnn.ne.0.and.SNEXT.eq.sneold)goto 199
451 x0(1) = xc(1) + SNEXT*xc(4)
452 x0(2) = xc(2) + SNEXT*xc(5)
453 x0(3) = xc(3) + SNEXT*xc(6)
459 xevdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
461 if((xevdiv-ievdiv).lt.0.0001.and.inc.eq.-1)ievdiv=ievdiv-1
464 elseif(ievdiv.gt.ndivto)then
468 call gfcoor(x0,iaxis,cx)
470 if((cx-clmoth).lt.-1.)then
472 elseif((cx-chmoth).gt.1.)then
477 elseif(cx.lt.clmoth)then
481 xevdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
483 if((xevdiv-ievdiv).lt.0.0001.and.inc.eq.-1)ievdiv=ievdiv-1
486 elseif(ievdiv.gt.ndivto)then
490 199 if(ievdiv.ge.idmi.and.ievdiv.le.idma)then
492 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
494 safety=min(safety,(cmax-cxold))
496 safefi=min(90.,(cmax-cxold))
497 safe22=saferr*sin(safefi)
498 safety=min(safety,safe22)
501 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
503 safety=min(safety,(cxold-cmin))
505 safefi=min(90.,(cxold-cmin))
506 safe22=saferr*sin(safefi)
507 safety=min(safety,safe22)
512 if(iaxis.eq.6.or.iaxis.le.3)then
513 if(ievdiv.lt.idmi.and.inc.gt.0)then
514 if(nnn.eq.0.and.iaxis.eq.6)nflag=1
516 * print *,'ievdiv=',ievdiv,' ;idmi=',idmi,' inc.gt.0'
517 * print *,isht,'=isht; ',iaxis,'=iaxis; ',ish,'=ish;'
519 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
520 safety=min(safety,abs(cmax-cxold))
521 elseif(iaxis.eq.6)then
522 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
523 safefi=min(90.,(cmax-cxold))
524 safe22=saferr*sin(safefi)
525 safety=min(safety,safe22)
529 elseif(ievdiv.gt.idma.and.inc.lt.0)then
530 if(nnn.eq.0.and.iaxis.eq.6)nflag=1
532 * print *,'ievdiv=',ievdiv,' ;idma=',idma,' inc.lt.0'
533 * print *,isht,'=isht; ',iaxis,'=iaxis; ',ish,'=ish;'
535 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
536 safety=min(safety,abs(cxold-cmin))
537 elseif(iaxis.eq.6)then
538 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
539 safefi=min(90.,(cxold-cmin))
540 safe22=saferr*sin(safefi)
541 safety=min(safety,safe22)
551 if(idma.eq.ndivto.and.(chmoth-clmoth).eq.360.)then
561 if(idmi.eq.1.and.(chmoth-clmoth).eq.360.)then
572 * *** Case of volume incompletely divided
577 JVOT = LQ(JVOLUM-IVOT)
580 * ** Get the division parameters
582 IF (NLEVEL.LT.NLDEV(NLEVEL)) THEN
585 * (case with JVOLUM structure locally developed)
586 JPARM = LQ(LQ(JVOLUM-LVOLUM(NLDEV(NLEVEL))))
587 IF (NLEVEL.EQ.NLDEV(NLEVEL)) GO TO 215
588 DO 210 ILEV = NLDEV(NLEVEL), NLEVEL-1
589 IF (IQ(JPARM+1).EQ.0) THEN
590 JPARM = LQ(JPARM-LINDEX(ILEV+1))
591 IF (JPARM.EQ.0) GO TO 215
592 ELSE IF (IQ(JPARM-3).GT.1) THEN
593 JPARM = LQ(JPARM-LINDEX(ILEV+1))
597 IF (ILEV.EQ.NLEVEL-1) THEN
610 * ** Look at the first and the last divisions only
612 220 IDT = IDTYP(IAXIS, ISH)
615 IF (XC(IAXIS).LT.ORIG) THEN
620 ELSE IF (IDT.EQ.2) THEN
621 R = XC(1)**2 + XC(2)**2
622 IF (ISH.EQ.9) R = R + XC(3)**2
625 IF (ISH.EQ.5.OR.ISH.EQ.6.OR.ISH.EQ.9) THEN
632 PRINT *, ' GNEXT : Partially divided ',ISH,IAXIS
634 IF (NDIV.GT.1) IN2 = NDIV
636 ELSE IF (IDT.EQ.4) THEN
638 RXY = XC(1)**2 + XC(2)**2
640 IF (XC(3).NE.0.0) THEN
641 THET = RADDEG * ATAN (RXY/XC(3))
642 IF (THET.LT.0.0) THET = THET + 180.0
646 IF (THET.LE.ORIG) THEN
652 PRINT *, ' GNEXT : Partially divided ',ISH,IAXIS
654 IF (ISH.EQ.5.OR.ISH.EQ.7) THEN
656 IF (NDIV.GT.1) IN2 = NDIV
658 IF (XC(1).NE.0.0.OR.XC(2).NE.0.0) THEN
659 PHI = RADDEG * ATAN2 (XC(2), XC(1))
663 IF (ISH.EQ.6.OR.ISH.EQ.8) THEN
664 IF (PHI.LT.ORIG) THEN
671 IF (NDIV.GT.1) IN2 = NDIV
676 225 IF (IDT.EQ.1) THEN
680 X0(IAXIS) = ORIG + (IN - 0.5) * SDIV
681 IF (ISH.EQ.4.OR.(ISH.EQ.10.AND.IAXIS.NE.1)) THEN
682 CALL GCENT (IAXIS, X0)
685 XT(I) = XC(I) - X0(I)
688 ELSE IF (IDT.EQ.3) THEN
689 PH0 = DEGRAD * (ORIG + (IN - 0.5) * SDIV)
693 XT(I) = XC(I)*CPHR + XC(I+1)*SPHR
694 XT(I+1) = XC(I+1)*CPHR - XC(I)*SPHR
704 IF (IQ(JPARM-3).GT.1) THEN
717 CALL GNOBOX (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
718 ELSE IF (ISHT.EQ.2) THEN
719 CALL GNOTRA (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
720 ELSE IF (ISHT.EQ.3) THEN
721 CALL GNOTRA (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
723 CALL GNOTRP (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
725 ELSE IF (ISHT.LE.10) THEN
727 CALL GNOTUB (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
728 ELSE IF (ISHT.EQ.6) THEN
729 CALL GNOTUB (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
730 ELSE IF (ISHT.EQ.7) THEN
731 CALL GNOCON (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
732 ELSE IF (ISHT.EQ.8) THEN
733 CALL GNOCON (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
734 ELSE IF (ISHT.EQ.9) THEN
735 CALL GNOSPH (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
737 CALL GNOPAR (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
739 ELSE IF (ISHT.EQ.11) THEN
740 CALL GNOPGO (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
741 ELSE IF (ISHT.EQ.12) THEN
742 CALL GNOPCO (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
743 ELSE IF (ISHT.EQ.13) THEN
744 CALL GNOELT (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
745 ELSE IF (ISHT.EQ.14) THEN
746 CALL GNOHYP (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
747 ELSE IF (ISHT.EQ.28) THEN
748 CALL GSNGTR (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,0)
749 ELSE IF (ISHT.EQ.NSCTUB) THEN
750 CALL GNOCTU (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
752 PRINT *, ' GNEXT : No code for shape ', ISHT
757 if(snxt.le.-prec)snxt=big
759 IF (SAFE.LT.SAFETY) SAFETY = SAFE
760 IF (SNXT.LT.SNEXT) SNEXT = SNXT
769 * *** Calculate SNEXT and SAFETY with respect to the Mother
770 * *** SAFETY only for concave volumes if finite SNEXT
771 * *** has been found with respect to one of its contents
774 IF (SNEXT.LT.0.9*BIG) THEN
775 IF (.NOT.BTEST(IQ(JVO),2)) IACT = 0
777 if(nin.eq.1.and.SNEXT.LT.0.9*BIG)then
778 if(q(jin+8).eq.0.)iact=2
780 JPAR = LQ(JGPAR-NLEVEL)
783 CALL GNBOX (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE )
784 ELSE IF (ISH.EQ.2) THEN
785 CALL GNTRAP (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
786 ELSE IF (ISH.EQ.3) THEN
787 CALL GNTRAP (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
789 CALL GNTRP (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
791 ELSE IF (ISH.LE.10) THEN
793 CALL GNTUBE (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
794 ELSE IF (ISH.EQ.6) THEN
795 CALL GNTUBE (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
796 ELSE IF (ISH.EQ.7) THEN
797 CALL GNCONE (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
798 ELSE IF (ISH.EQ.8) THEN
799 CALL GNCONE (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
800 ELSE IF (ISH.EQ.9) THEN
801 CALL GNSPHR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
803 CALL GNPARA (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
805 ELSE IF (ISH.EQ.12) THEN
806 CALL GNPCON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
807 ELSE IF (ISH.EQ.11) THEN
808 CALL GNPGON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
809 ELSE IF (ISH.EQ.13) THEN
810 CALL GNELTU (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
811 ELSE IF (ISH.EQ.14) THEN
812 CALL GNHYPE (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
813 ELSE IF (ISH.EQ.28) THEN
814 CALL GSNGTR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,1)
815 ELSE IF (ISH.EQ.NSCTUB) THEN
816 CALL GNCTUB (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
818 PRINT *, ' GNEXT : No code for shape ', ISH
823 if(snxt.le.-prec)snxt=big
825 IF (SAFE.LT.SAFETY) SAFETY = SAFE
826 IF (SNXT.LT.SNEXT) SNEXT = SNXT
828 400 if(myinfr.gt.0)then
830 iq(jin)=ibclr(iq(jin),4)
833 if(gonly(nlevel).eq.0..or.nvmany.ne.0) THEN
834 if(safety.lt.tsafet)tsafet=safety
835 if(snext.lt.tsnext)then
840 if(gonly(nlevel).eq.0.)then
842 if(gonly(nlevel-1).eq.0..or.newfl.eq.0)then
843 if(gonly(nlevel-1).ne.0.)newfl=1
845 jvo=lq(jvolum-lvolum(nlevel))
848 myinfr=lindex(nlevel+1)
850 iq(jin)=ibset(iq(jin),4)
856 if(manyfl.lt.nvmany)then
858 if(manyfl.eq.nfmany)goto 403
859 levtmp=manyle(manyfl)
861 namtmp(i)=manyna(manyfl,i)
862 numtmp(i)=manynu(manyfl,i)
864 call glvolu(levtmp,namtmp,numtmp,ier)
865 if(ier.ne.0)print *,'Fatal error in GLVOLU'
869 if(tsafet.le.safety)safety=tsafet
870 if(tsnext.le.snext)then