5 * Revision 1.1.1.1 1995/10/24 10:21:44 cernlib
9 #include "geant321/pilot.h"
10 #if !defined(CERNLIB_OLD)
11 *CMZ : 3.21/04 21/03/95 16.13.08 by S.Giani
15 C. ******************************************************************
19 C. * Computes SAFETY and, only when new SAFETY is smaller than *
20 C. * STEP, computes SNEXT. *
21 C. * STEP has to be preset to BIG or to physical step size *
23 C. * Called by : GTELEC, GTGAMA, GTHADR, GTMUON, GTNEUT, GTNINO *
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 *
35 C. ******************************************************************
37 #include "geant321/gcbank.inc"
38 #include "geant321/gcflag.inc"
39 #include "geant321/gconsp.inc"
40 #include "geant321/gcstak.inc"
41 #include "geant321/gctmed.inc"
42 #include "geant321/gctrak.inc"
43 #include "geant321/gcvolu.inc"
44 #include "geant321/gcshno.inc"
45 #if defined(CERNLIB_USRJMP)
46 #include "geant321/gcjump.inc"
48 #include "geant321/gchvir.inc"
49 #include "geant321/gcvdma.inc"
50 DIMENSION NUMTMP(15),NAMTMP(15)
52 PARAMETER (BIG1=0.9*BIG)
55 dimension iarrin(500),cxm(3),xxm(6)
56 REAL X0(6), XC(6), XT(6)
60 DATA IDTYP / 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 2, 3, 1,
61 + 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 4, 3, 1, 1, 1,
64 C. ------------------------------------------------------------------
66 * * *** Transform current point and direction into local reference system
74 401 IF (GRMAT(10,NLEVEL).EQ.0.) THEN
75 XC(1) = VECT(1) - GTRAN(1,NLEVEL)
76 XC(2) = VECT(2) - GTRAN(2,NLEVEL)
77 XC(3) = VECT(3) - GTRAN(3,NLEVEL)
82 C***** Code Expanded From Routine: GTRNSF
85 XL1 = VECT(1) - GTRAN(1,NLEVEL)
86 XL2 = VECT(2) - GTRAN(2,NLEVEL)
87 XL3 = VECT(3) - GTRAN(3,NLEVEL)
88 XC(1) = XL1*GRMAT(1,NLEVEL) + XL2*GRMAT(2,NLEVEL) + XL3*
90 XC(2) = XL1*GRMAT(4,NLEVEL) + XL2*GRMAT(5,NLEVEL) + XL3*
92 XC(3) = XL1*GRMAT(7,NLEVEL) + XL2*GRMAT(8,NLEVEL) + XL3*
95 C***** End of Code Expanded From Routine: GTRNSF
96 C***** Code Expanded From Routine: GROT
98 XC(4) = VECT(4)*GRMAT(1,NLEVEL) + VECT(5)*GRMAT(2,NLEVEL) +
99 1 VECT(6)*GRMAT(3,NLEVEL)
100 XC(5) = VECT(4)*GRMAT(4,NLEVEL) + VECT(5)*GRMAT(5,NLEVEL) +
101 1 VECT(6)*GRMAT(6,NLEVEL)
102 XC(6) = VECT(4)*GRMAT(7,NLEVEL) + VECT(5)*GRMAT(8,NLEVEL) +
103 1 VECT(6)*GRMAT(9,NLEVEL)
105 C***** End of Code Expanded From Routine: GROT
108 * *** Compute distance to boundaries
113 JVO = LQ(JVOLUM-LVOLUM(NLEVEL))
115 IF (Q(JVO+3).EQ.0.) GO TO 300
116 if(raytra.eq.1..and.imyse.eq.1)then
117 CALL UHTOC(NAMES(NLEVEL),4,NAME,4)
118 CALL GFIND(NAME,'SEEN',ISSEEN)
119 if(isseen.eq.-2.or.isseen.eq.-1)goto 300
122 IF (NIN.LT.0) GO TO 200
124 * *** Case with contents positioned
133 clmoth=q(jvirt+4*(LVOLUM(NLEVEL)-1)+3)
134 chmoth=q(jvirt+4*(LVOLUM(NLEVEL)-1)+4)
135 ndivto=q(jvirt+4*(LVOLUM(NLEVEL)-1)+2)
136 iaxis =q(jvirt+4*(LVOLUM(NLEVEL)-1)+1)
142 divthi=(chmoth-clmoth)/ndivto
145 if(xc(iaxis+3).ge.0.)then
150 xvdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
152 if((xvdiv-ivdiv).lt.0.0001.and.inc.eq.-1)ivdiv=ivdiv-1
155 elseif(ivdiv.gt.ndivto)then
159 call gfcoor(xc,iaxis,cx)
161 dr= xc(1)*xc(4)+xc(2)*xc(5)
162 * if(dr.eq.0.)print *,'dr.eq.0.'
168 elseif(iaxis.eq.6)then
169 if((cx-clmoth).lt.-1.)then
171 elseif((cx-chmoth).gt.1.)then
176 elseif(cx.lt.clmoth)then
179 dfi=xc(1)*xc(5)-xc(2)*xc(4)
186 xvdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
188 if((xvdiv-ivdiv).lt.0.0001.and.inc.eq.-1)ivdiv=ivdiv-1
191 elseif(ivdiv.gt.ndivto)then
195 jvdiv=lq(jvirt-LVOLUM(NLEVEL))
196 112 iofset=iq(jvdiv+ivdiv)
197 jcont2=jvdiv+iofset+1
203 elseif(ncont.eq.1)then
208 idmi=iq(jcont2+ncont+1)
209 idma=iq(jcont2+ncont+2)
216 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
218 safety=min(safety,(cxold-cmin))
220 safefi=min(90.,(cxold-cmin))
221 saferr=sqrt(xc(1)**2+xc(2)**2)
222 safe22=saferr*sin(safefi)
223 safety=min(safety,safe22)
226 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
228 safety=min(safety,(cmax-cxold))
230 safefi=min(90.,(cmax-cxold))
231 saferr=sqrt(xc(1)**2+xc(2)**2)
232 safe22=saferr*sin(safefi)
233 safety=min(safety,safe22)
237 if(ncont.eq.0)goto 181
242 150 if(nin.gt.1.and.ncont.gt.1)then
246 * if(infrom.gt.0.and.myinfr.eq.0.and.newfl.eq.0)then
247 * if(in.eq.infrom)goto 171
250 if(.NOT.BTEST(iq(jin),4))then
259 if(iarrin(ll).eq.in)then
272 IF (IN.LT.0) GO TO 300
275 JVOT = LQ(JVOLUM-IVOT)
278 IF (BTEST(IQ(JVOT),1)) THEN
279 * (case with JVOLUM structure locally developed)
280 JPAR = LQ(LQ(JVOLUM-LVOLUM(NLDEV(NLEVEL))))
281 DO 169 ILEV = NLDEV(NLEVEL), NLEVEL
282 IF (IQ(JPAR+1).EQ.0) THEN
283 IF (ILEV.EQ.NLEVEL) THEN
286 JPAR = LQ(JPAR-LINDEX(ILEV+1))
288 IF (JPAR.EQ.0) GO TO 170
289 ELSE IF (IQ(JPAR-3).GT.1) THEN
290 JPAR = LQ(JPAR-LINDEX(ILEV+1))
307 179 if((nin.eq.1).or.(nin.gt.1.and.llflag.eq.0))then
309 * * Compute distance to boundary of current content
311 C***** Code Expanded From Routine: GITRAN
312 180 IF (IROTT .EQ. 0) THEN
313 XT(1) = XC(1) - Q(5+JIN)
314 XT(2) = XC(2) - Q(6+JIN)
315 XT(3) = XC(3) - Q(7+JIN)
322 XL1 = XC(1) - Q(5+JIN)
323 XL2 = XC(2) - Q(6+JIN)
324 XL3 = XC(3) - Q(7+JIN)
326 XT(1) = XL1*Q(JR+1) + XL2*Q(JR+2) + XL3*Q(JR+3)
327 XT(2) = XL1*Q(JR+4) + XL2*Q(JR+5) + XL3*Q(JR+6)
328 XT(3) = XL1*Q(JR+7) + XL2*Q(JR+8) + XL3*Q(JR+9)
330 C***** End of Code Expanded From Routine: GITRAN
331 C***** Code Expanded From Routine: GRMTD
332 XT(4)=XC(4)*Q(JR+1)+XC(5)*Q(JR+2)+XC(6)*Q(JR+3)
333 XT(5)=XC(4)*Q(JR+4)+XC(5)*Q(JR+5)+XC(6)*Q(JR+6)
334 XT(6)=XC(4)*Q(JR+7)+XC(5)*Q(JR+8)+XC(6)*Q(JR+9)
336 C***** End of Code Expanded From Routine: GRMTD
343 CALL GNOBOX (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
344 ELSE IF (ISHT.EQ.2) THEN
345 CALL GNOTRA(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE)
346 ELSE IF (ISHT.EQ.3) THEN
347 CALL GNOTRA(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE)
349 CALL GNOTRP (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
351 ELSE IF (ISHT.LE.10) THEN
353 CALL GNOTUB(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE)
354 ELSE IF (ISHT.EQ.6) THEN
355 CALL GNOTUB(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE)
356 ELSE IF (ISHT.EQ.7) THEN
357 CALL GNOCON(XT,Q(JPAR+1),IACT,1,SNEXT,SNXT,SAFE)
358 ELSE IF (ISHT.EQ.8) THEN
359 CALL GNOCON(XT,Q(JPAR+1),IACT,2,SNEXT,SNXT,SAFE)
360 ELSE IF (ISHT.EQ.9) THEN
361 CALL GNOSPH (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
363 CALL GNOPAR (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
365 ELSE IF (ISHT.EQ.11) THEN
366 CALL GNOPGO (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
367 ELSE IF (ISHT.EQ.12) THEN
368 CALL GNOPCO (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
369 ELSE IF (ISHT.EQ.13) THEN
370 CALL GNOELT (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
371 ELSE IF (ISHT.EQ.14) THEN
372 CALL GNOHYP (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
373 ELSE IF (ISHT.EQ.28) THEN
374 CALL GSNGTR (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE,0)
375 ELSE IF (ISHT.EQ.NSCTUB) THEN
376 CALL GNOCTU (XT,Q(JPAR+1),IACT,SNEXT,SNXT,SAFE)
378 PRINT *, ' GTNEXT : No code for shape ', ISHT
383 if(snxt.le.-prec)snxt=big1
385 IF (SAFE.LT.SAFETY) SAFETY = SAFE
386 IF (SNXT.LE.MIN(SNEXT,BIG1)) THEN
390 LQ(JGPAR-NLEVEL-1) = JPAR
391 IQ(JGPAR+NLEVEL+1) = NPAR
396 elseif(nin.ge.1.and.ncont.gt.1)then
398 if(iii.le.ncont)goto 150
401 * * Compute distance to boundary of current volume
404 JPAR = LQ(JGPAR-NLEVEL)
409 CALL GNBOX (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
410 ELSE IF (ISH.EQ.2) THEN
411 CALL GNTRAP (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE)
412 ELSE IF (ISH.EQ.3) THEN
413 CALL GNTRAP (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE)
415 CALL GNTRP (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
417 ELSE IF (ISH.LE.10) THEN
419 CALL GNTUBE (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE)
420 ELSE IF (ISH.EQ.6) THEN
421 CALL GNTUBE (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE)
422 ELSE IF (ISH.EQ.7) THEN
423 CALL GNCONE (XC, Q(JPAR+1),IACT,1, SNEXT,SNXT,SAFE)
424 ELSE IF (ISH.EQ.8) THEN
425 CALL GNCONE (XC, Q(JPAR+1),IACT,2, SNEXT,SNXT,SAFE)
426 ELSE IF (ISH.EQ.9) THEN
427 CALL GNSPHR (XC, Q(JPAR+1),IACT, SNEXT, SNXT, SAFE)
429 CALL GNPARA (XC, Q(JPAR+1),IACT, SNEXT, SNXT, SAFE)
431 ELSE IF (ISH.EQ.12) THEN
432 CALL GNPCON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
433 ELSE IF (ISH.EQ.11) THEN
434 CALL GNPGON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
435 ELSE IF (ISH.EQ.13) THEN
436 CALL GNELTU (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
437 ELSE IF (ISH.EQ.14) THEN
438 CALL GNHYPE (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
439 ELSE IF (ISH.EQ.28) THEN
440 CALL GSNGTR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,1)
441 ELSE IF (ISH.EQ.NSCTUB) THEN
442 CALL GNCTUB (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
444 PRINT *, ' GTNEXT : No code for shape ', ISH
449 if(snxt.le.-prec)snxt=big1
451 IF (SAFE.LT.SAFETY) SAFETY = SAFE
452 IF (SNXT.LE.MIN(SNEXT,BIG1)) THEN
459 if(idma.eq.ndivto.and.inc.gt.0)goto 400
460 cxm(1)=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
464 cxm(2)=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
467 call gntube(xxm,cxm,3,1,SNEXT,snxnew,safe)
468 if(snxnew.lt.0.)snxnew=big1
471 if(snxtot.lt.SNEXT)then
472 xxm(1)=xxm(1)+snxnew*xxm(4)
473 xxm(2)=xxm(2)+snxnew*xxm(5)
474 xxm(3)=xxm(3)+snxnew*xxm(6)
475 call gfcoor(xxm,iaxis,cxnew)
476 xevdiv=((cxnew-clmoth)*ndivto/(chmoth-clmoth))+1
478 dr= xxm(1)*xxm(4)+xxm(2)*xxm(5)
479 * if(dr.eq.0.)print *,'dr.eq.0.'
485 if((xevdiv-ivdiv).lt.0.0001.and.inc.eq.-1)ivdiv=ivdiv-1
488 elseif(ivdiv.gt.ndivto)then
495 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
496 safety=min(safety,(cmax-cxold))
498 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
499 safety=min(safety,(cxold-cmin))
504 if(nnn.ne.0.and.SNEXT.eq.sneold)goto 199
505 x0(1) = xc(1) + SNEXT*xc(4)
506 x0(2) = xc(2) + SNEXT*xc(5)
507 x0(3) = xc(3) + SNEXT*xc(6)
513 xevdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
515 if((xevdiv-ievdiv).lt.0.0001.and.inc.eq.-1)ievdiv=ievdiv-1
518 elseif(ievdiv.gt.ndivto)then
522 call gfcoor(x0,iaxis,cx)
524 if((cx-clmoth).lt.-1.)then
526 elseif((cx-chmoth).gt.1.)then
531 elseif(cx.lt.clmoth)then
535 xevdiv=((cx-clmoth)*ndivto/(chmoth-clmoth))+1
537 if((xevdiv-ievdiv).lt.0.0001.and.inc.eq.-1)ievdiv=ievdiv-1
540 elseif(ievdiv.gt.ndivto)then
544 199 if(ievdiv.ge.idmi.and.ievdiv.le.idma)then
546 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
548 safety=min(safety,(cmax-cxold))
550 safefi=min(90.,(cmax-cxold))
551 safe22=saferr*sin(safefi)
552 safety=min(safety,safe22)
555 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
557 safety=min(safety,(cxold-cmin))
559 safefi=min(90.,(cxold-cmin))
560 safe22=saferr*sin(safefi)
561 safety=min(safety,safe22)
566 if(iaxis.eq.6.or.iaxis.le.3)then
567 if(ievdiv.lt.idmi.and.inc.gt.0)then
568 if(nnn.eq.0.and.iaxis.eq.6
569 + .and.(chmoth-clmoth).eq.360.)nflag=1
571 * print *,'ievdiv=',ievdiv,' ;idmi=',idmi,' inc.gt.0'
572 * print *,isht,'=isht; ',iaxis,'=iaxis; ',ish,'=ish;'
574 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
575 safety=min(safety,abs(cmax-cxold))
576 elseif(iaxis.eq.6)then
577 cmax=(clmoth+(idma-1)*(chmoth-clmoth)/ndivto)+divthi
578 safefi=min(90.,(cmax-cxold))
579 safe22=saferr*sin(safefi)
580 safety=min(safety,safe22)
584 elseif(ievdiv.gt.idma.and.inc.lt.0)then
585 if(nnn.eq.0.and.iaxis.eq.6
586 + .and.(chmoth-clmoth).eq.360.)nflag=1
588 * print *,'ievdiv=',ievdiv,' ;idma=',idma,' inc.lt.0'
589 * print *,isht,'=isht; ',iaxis,'=iaxis; ',ish,'=ish;'
591 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
592 safety=min(safety,abs(cxold-cmin))
593 elseif(iaxis.eq.6)then
594 cmin=clmoth+(idmi-1)*(chmoth-clmoth)/ndivto
595 safefi=min(90.,(cxold-cmin))
596 safe22=saferr*sin(safefi)
597 safety=min(safety,safe22)
607 if(idma.eq.ndivto.and.(chmoth-clmoth).eq.360.)then
617 if(idmi.eq.1.and.(chmoth-clmoth).eq.360.)then
628 * *** Case of volume incompletely divided
633 JVOT = LQ(JVOLUM-IVOT)
636 * ** Get the division parameters
638 IF (NLEVEL.LT.NLDEV(NLEVEL)) THEN
641 * (case with JVOLUM structure locally developed)
642 JPARM = LQ(LQ(JVOLUM-LVOLUM(NLDEV(NLEVEL))))
643 IF (NLEVEL.EQ.NLDEV(NLEVEL)) GO TO 215
644 DO 210 ILEV = NLDEV(NLEVEL), NLEVEL-1
645 IF (IQ(JPARM+1).EQ.0) THEN
646 JPARM = LQ(JPARM-LINDEX(ILEV+1))
647 IF (JPARM.EQ.0) GO TO 215
648 ELSE IF (IQ(JPARM-3).GT.1) THEN
649 JPARM = LQ(JPARM-LINDEX(ILEV+1))
653 IF (ILEV.EQ.NLEVEL-1) THEN
666 * ** Look at the first and the last divisions only
668 220 IDT = IDTYP(IAXIS, ISH)
671 IF (XC(IAXIS).LT.ORIG) THEN
676 ELSE IF (IDT.EQ.2) THEN
677 R = XC(1)**2 + XC(2)**2
678 IF (ISH.EQ.9) R = R + XC(3)**2
681 IF (ISH.EQ.5.OR.ISH.EQ.6.OR.ISH.EQ.9) THEN
688 ** PRINT *, ' GTNEXT : Partially divided ',ISH,IAXIS
690 IF (NDIV.GT.1) IN2 = NDIV
692 ELSE IF (IDT.EQ.4) THEN
694 RXY = XC(1)**2 + XC(2)**2
696 IF (XC(3).NE.0.0) THEN
697 THET = RADDEG * ATAN (RXY/XC(3))
698 IF (THET.LT.0.0) THET = THET + 180.0
702 IF (THET.LE.ORIG) THEN
709 IF (ISH.EQ.5.OR.ISH.EQ.7) THEN
711 IF (NDIV.GT.1) IN2 = NDIV
713 IF (XC(1).NE.0.0.OR.XC(2).NE.0.0) THEN
714 PHI = RADDEG * ATAN2 (XC(2), XC(1))
718 IF (ISH.EQ.6.OR.ISH.EQ.8) THEN
719 IF (PHI.LT.ORIG) THEN
726 IF (NDIV.GT.1) IN2 = NDIV
731 225 IF (IDT.EQ.1) THEN
735 X0(IAXIS) = ORIG + (IN - 0.5) * SDIV
736 IF (ISH.EQ.4.OR.(ISH.EQ.10.AND.IAXIS.NE.1)) THEN
737 CALL GCENT (IAXIS, X0)
739 XT(1) = XC(1) - X0(1)
740 XT(2) = XC(2) - X0(2)
741 XT(3) = XC(3) - X0(3)
745 ELSE IF (IDT.EQ.3) THEN
746 PH0 = DEGRAD * (ORIG + (IN - 0.5) * SDIV)
749 XT(1) = XC(1)*CPHR + XC(2)*SPHR
750 XT(2) = XC(2)*CPHR - XC(1)*SPHR
752 XT(4) = XC(4)*CPHR + XC(5)*SPHR
753 XT(5) = XC(5)*CPHR - XC(4)*SPHR
763 IF (IQ(JPARM-3).GT.1) THEN
776 CALL GNOBOX (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
777 ELSE IF (ISHT.EQ.2) THEN
778 CALL GNOTRA (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
779 ELSE IF (ISHT.EQ.3) THEN
780 CALL GNOTRA (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
782 CALL GNOTRP (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
784 ELSE IF (ISHT.LE.10) THEN
786 CALL GNOTUB (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
787 ELSE IF (ISHT.EQ.6) THEN
788 CALL GNOTUB (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
789 ELSE IF (ISHT.EQ.7) THEN
790 CALL GNOCON (XT, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
791 ELSE IF (ISHT.EQ.8) THEN
792 CALL GNOCON (XT, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
793 ELSE IF (ISHT.EQ.9) THEN
794 CALL GNOSPH (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
796 CALL GNOPAR (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
798 ELSE IF (ISHT.EQ.11) THEN
799 CALL GNOPGO (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
800 ELSE IF (ISHT.EQ.12) THEN
801 CALL GNOPCO (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
802 ELSE IF (ISHT.EQ.13) THEN
803 CALL GNOELT (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
804 ELSE IF (ISHT.EQ.28) THEN
805 CALL GSNGTR (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,0)
806 ELSE IF (ISHT.EQ.NSCTUB) THEN
807 CALL GNOCTU (XT, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
809 PRINT *, ' GTNEXT : No code for shape ', ISHT
814 if(snxt.le.-prec)snxt=big1
816 IF (SAFE.LT.SAFETY) SAFETY = SAFE
817 IF (SNXT.LE.MIN(SNEXT,BIG1)) THEN
820 if(raytra.eq.1.)ingoto=-1
829 * (later, this section only for concave volumes if INGOTO >0
831 IF (IGNEXT.NE.0) THEN
832 IF (.NOT.BTEST(IQ(JVO),2)) IACT = 0
834 if(nin.eq.1.and.ignext.ne.0)then
835 if(q(jin+8).eq.0.)iact=1
837 JPAR = LQ(JGPAR-NLEVEL)
840 CALL GNBOX (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE )
841 ELSE IF (ISH.EQ.2) THEN
842 CALL GNTRAP (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
843 ELSE IF (ISH.EQ.3) THEN
844 CALL GNTRAP (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
846 CALL GNTRP (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
848 ELSE IF (ISH.LE.10) THEN
850 CALL GNTUBE (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
851 ELSE IF (ISH.EQ.6) THEN
852 CALL GNTUBE (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
853 ELSE IF (ISH.EQ.7) THEN
854 CALL GNCONE (XC, Q(JPAR+1), IACT, 1, SNEXT, SNXT, SAFE)
855 ELSE IF (ISH.EQ.8) THEN
856 CALL GNCONE (XC, Q(JPAR+1), IACT, 2, SNEXT, SNXT, SAFE)
857 ELSE IF (ISH.EQ.9) THEN
858 CALL GNSPHR (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
860 CALL GNPARA (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
862 ELSE IF (ISH.EQ.12) THEN
863 CALL GNPCON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
864 ELSE IF (ISH.EQ.11) THEN
865 CALL GNPGON (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
866 ELSE IF (ISH.EQ.13) THEN
867 CALL GNELTU (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
868 ELSE IF (ISH.EQ.14) THEN
869 CALL GNHYPE (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
870 ELSE IF (ISH.EQ.28) THEN
871 CALL GSNGTR (XC,Q(JPAR+1), IACT, SNEXT, SNXT, SAFE,1)
872 ELSE IF (ISH.EQ.NSCTUB) THEN
873 CALL GNCTUB (XC, Q(JPAR+1), IACT, SNEXT, SNXT, SAFE)
875 PRINT *, ' GTNEXT : No code for shape ', ISH
880 if(snxt.le.-prec)snxt=big1
882 IF (SAFE.LT.SAFETY) SAFETY = SAFE
883 IF (SNXT.LE.MIN(SNEXT,BIG1)) THEN
889 400 if(iswit(9).eq.123456789.and.Q(JVO+3).gt.1.)then
890 print *,'n. of checked objects = ',mmm
894 iq(jin)=ibclr(iq(jin),4)
897 if(gonly(nlevel).eq.0..or.nvmany.ne.0) THEN
898 if(safety.lt.tsafet)tsafet=safety
899 if(snext.lt.tsnext)then
906 iq(jgpar2+nlevel+1)=iq(jgpar+nlevel+1)
907 lq(jgpar2-nlevel-1)=lq(jgpar-nlevel-1)
910 if(gonly(nlevel).eq.0.)then
912 if(gonly(nlevel-1).eq.0..or.newfl.eq.0)then
913 if(gonly(nlevel-1).ne.0.)newfl=1
915 jvo=lq(jvolum-lvolum(nlevel))
918 myinfr=lindex(nlevel+1)
920 iq(jin)=ibset(iq(jin),4)
926 if(manyfl.lt.nvmany)then
928 if(manyfl.eq.nfmany)goto 403
929 levtmp=manyle(manyfl)
931 namtmp(i)=manyna(manyfl,i)
932 numtmp(i)=manynu(manyfl,i)
934 call glvolu(levtmp,namtmp,numtmp,ier)
935 if(ier.ne.0)print *,'Fatal error in GLVOLU'
939 if(tsafet.le.safety)safety=tsafet
940 if(tsnext.le.snext)then
947 iq(jgpar+nlevel+1)=iq(jgpar2+nlevel+1)
948 lq(jgpar-nlevel-1)=lq(jgpar2-nlevel-1)
953 * *** Attempt to rescue negative SNXT due to rounding errors
955 900 IF (SNXT.EQ.BIG1) THEN
957 IF (ISWIT(9).EQ.123456789) THEN
958 PRINT *,' GTNEXT : SNEXT,SAFETY,INGOTO=',SNEXT,SAFETY,INGOTO
967 IF(JGSTAT.NE.0) CALL GFSTAT(3)