5 * Revision 1.1.1.1 1995/10/24 10:20:56 cernlib
9 #include "geant321/pilot.h"
10 *CMZ : 3.21/02 21/07/94 11.48.23 by S.Giani
12 SUBROUTINE GVDRAD(IAXIS,ISH,IROT,DX,PARS,CL,CH,IERR)
14 C. ******************************************************************
16 C. * ROUTINE TO COMPUTE THE LIMITS IN R FOR THE SHAPE ISH *
17 C. * DISPLACED BY THE VECTOR DX AND ROTATED BY THE MATRIX IROT. *
18 C. * IF IAXIS = 4 THE R IS THE XY PLANE R, IF IAXIS = 5 IT IS *
19 C. * THE 3 DINEMSIONAL SPACE R. THE SHAPE HAS NPAR PARAMETERS *
20 C. * IN THE ARRAY PARS. THE LOWER LIMIT IS RETURNED IN CL AND *
21 C. * THE HIGHER IN CH. IF THE CALCULATION CANNOT BE PERFORMED *
22 C. * IERR IS SET TO 1 OTHERWISE IT IS SET TO 0. *
24 C. * ==>Called by : GVDLIM *
25 C. * Author S.Giani ********* *
27 C. ******************************************************************
29 #include "geant321/gcbank.inc"
30 #include "geant321/gconsp.inc"
31 #include "geant321/gcshno.inc"
32 DIMENSION DX(3),PARS(50),X(3),XT(3)
34 C. --------------------------------------------------
38 C FIRST CALCULATE THE LENGTH OF THE DISPLACEMENT OF THE
41 DXS=DX(1)*DX(1)+DX(2)*DX(2)
42 IF(IAXIS.EQ.5) DXS=DXS+DX(3)*DX(3)
43 IF(DXS.GT.0.0) DXS=SQRT(DXS)
45 IF(ISH.GT.4.AND.ISH.NE.10.AND.ISH.NE.28) GO TO 40
47 C CUBOIDS, TRAPEZOIDS, PARALLELEPIPEDS.
54 C THIS IS A LOOP OVER THE 8 CORNERS.
55 C FIRST FIND THE LOCAL COORDINATES.
59 C General twisted trapezoid.
65 X(1)=PARS(I0)+PARS(I0+2)*X(3)
66 X(2)=PARS(I0+1)+PARS(I0+3)*X(3)
75 IF(IP.LE.4) X(3)=-X(3)
77 IF(ISH.GT.2.AND.X(3).GT.0.0) IP2=4
78 IF(ISH.EQ.1.OR.ISH.EQ.10) IP2=2
80 IF(ISH.EQ.4.AND.X(3).GT.0.0) IP2=8
82 IF(MOD(IP+3,4).LT.2) X(2)=-X(2)
84 IF(ISH.NE.1.AND.ISH.NE.10.AND.X(3).GT.0.0) IP1=2
86 IF(ISH.EQ.4.AND.X(3).GT.0.0) IP1=IP1+4
87 IF(ISH.EQ.4.AND.X(2).GT.0.0) IP1=IP1+1
89 IF(MOD(IP,2).EQ.1) X(1)=-X(1)
91 IF(ISH.NE.10) GO TO 10
92 X(1)=X(1)+X(2)*PARS(4)+X(3)*PARS(5)
93 X(2)=X(2)+X(3)*PARS(6)
98 IF(X(3).GT.0.0) IP4=11
99 X(1)=X(1)+X(2)*PARS(IP4)+X(3)*PARS(2)
100 X(2)=X(2)+X(3)*PARS(3)
109 IF(IROT.NE.0) CALL GINROT(X,Q(JROT+1),XT)
111 C NOW COMPUTE RMIN = PROJECTED R ON DX AND RMAX = R
112 C AND UPDATE LIMITS IF NECESSARY.
114 R2=(XT(1)+DX(1))**2+(XT(2)+DX(2))**2
115 IF(IAXIS.EQ.5) R2=R2+(XT(3)+DX(3))**2
119 IF(CL.LE.0.0) GO TO 30
121 XPT=DX(1)*XT(1)+DX(2)*XT(2)
122 IF(IAXIS.EQ.5) XPT=XPT+DX(3)*XT(3)
123 IF(DXS.LE.1.0E-05) GO TO 30
136 C POLYGONES AND POLYCONES
138 IF(ISH.EQ.11.AND.IAXIS.EQ.4)THEN
147 DO 145 I=7,IZLAST+2,3
148 IF(PARS(I).GT.TMPRAD)TMPRAD=PARS(I)
149 IF(PARS(I-1).LT.TMPMIN)TMPMIN=PARS(I-1)
153 PHIMAX=PHIMIN+PARS(2)
154 AANG=ABS(PHIMAX-PHIMIN)
156 AATMAX=NANG*360./AANG
159 IF(ALA.GT..5)LATMAX=LATMAX+1
160 AFINV=1./COS(PI/LATMAX)
164 ELSEIF(ISH.EQ.12.AND.IAXIS.EQ.4)THEN
173 DO 146 I=6,IZLAST+2,3
174 IF(PARS(I).GT.TMPRAD)TMPRAD=PARS(I)
175 IF(PARS(I-1).LT.TMPMIN)TMPMIN=PARS(I-1)
181 IF(ISH.GT.8.AND.ISH.NE.NSCTUB.AND.ISH.NE.13.AND.ISH.NE.14)GO TO 80
186 IF(ISH.GT.6.AND.ISH.NE.NSCTUB.AND.ISH.NE.13.AND.ISH.NE.14) IP3=1
189 IF(ISH.EQ.NSCTUB) THEN
190 S1 = (1.0-PARS(8))*(1.0+PARS(8))
191 IF( S1 .GT. 0.0) S1 = SQRT(S1)
192 S2 = (1.0-PARS(11))*(1.0+PARS(11))
193 IF( S2 .GT. 0.0) S2 = SQRT(S2)
194 IF( S2 .GT. S1 ) S1 = S2
200 ** APPROXIME TO A CYLINDER WHIT RADIUS
201 ** EQUAL TO THE ELLIPSE MAJOR AXIS
204 IF(PARS(1).GT.R) R=PARS(1)
210 R = SQRT(PARS(2)**2+(PARS(3)*TAN(PARS(4)*DEGRAD))**2)
214 IF(ISH.LE.6.OR.ISH.EQ.NSCTUB) GO TO 50
217 IF(PARS(5).GT.R) R=PARS(5)
219 IF(PARS(4).LT.RMN) RMN=PARS(4)
223 C ROTATE THE LOCAL Z AXIS.
232 IF(IROT.NE.0) CALL GINROT(X,Q(JROT+1),XT)
234 C COMPUTE RMIN AND RMAX ASSUMING COMPLETE TUBE HALF
235 C LENGTH DZ AND RADIUS R.
238 IF(IAXIS.EQ.4) ST2=(1+XT(3))*(1-XT(3))
239 DR=SQRT(DZ*DZ*ST2+R*R)
243 IF(ABS(XT(3)).EQ.1.0.AND.DXS.LT.1.0E-05) CL=RMN
249 IF(ISH.GT.9) GO TO 999
256 IF(IAXIS.EQ.5.AND.DXS.LT.1.0E-05) CL=PARS(1)