5 * Revision 1.1.1.1 1999/05/18 15:55:17 fca
8 * Revision 1.1.1.1 1995/10/24 10:20:56 cernlib
12 #include "geant321/pilot.h"
13 *CMZ : 3.21/02 21/07/94 11.48.23 by S.Giani
15 SUBROUTINE GVDRAD(IAXIS,ISH,IROT,DX,PARS,CL,CH,IERR)
17 C. ******************************************************************
19 C. * ROUTINE TO COMPUTE THE LIMITS IN R FOR THE SHAPE ISH *
20 C. * DISPLACED BY THE VECTOR DX AND ROTATED BY THE MATRIX IROT. *
21 C. * IF IAXIS = 4 THE R IS THE XY PLANE R, IF IAXIS = 5 IT IS *
22 C. * THE 3 DINEMSIONAL SPACE R. THE SHAPE HAS NPAR PARAMETERS *
23 C. * IN THE ARRAY PARS. THE LOWER LIMIT IS RETURNED IN CL AND *
24 C. * THE HIGHER IN CH. IF THE CALCULATION CANNOT BE PERFORMED *
25 C. * IERR IS SET TO 1 OTHERWISE IT IS SET TO 0. *
27 C. * ==>Called by : GVDLIM *
28 C. * Author S.Giani ********* *
30 C. ******************************************************************
32 #include "geant321/gcbank.inc"
33 #include "geant321/gconsp.inc"
34 #include "geant321/gcshno.inc"
35 DIMENSION DX(3),PARS(100),X(3),XT(3)
37 C. --------------------------------------------------
41 C FIRST CALCULATE THE LENGTH OF THE DISPLACEMENT OF THE
44 DXS=DX(1)*DX(1)+DX(2)*DX(2)
45 IF(IAXIS.EQ.5) DXS=DXS+DX(3)*DX(3)
46 IF(DXS.GT.0.0) DXS=SQRT(DXS)
48 IF(ISH.GT.4.AND.ISH.NE.10.AND.ISH.NE.28) GO TO 40
50 C CUBOIDS, TRAPEZOIDS, PARALLELEPIPEDS.
57 C THIS IS A LOOP OVER THE 8 CORNERS.
58 C FIRST FIND THE LOCAL COORDINATES.
62 C General twisted trapezoid.
68 X(1)=PARS(I0)+PARS(I0+2)*X(3)
69 X(2)=PARS(I0+1)+PARS(I0+3)*X(3)
78 IF(IP.LE.4) X(3)=-X(3)
80 IF(ISH.GT.2.AND.X(3).GT.0.0) IP2=4
81 IF(ISH.EQ.1.OR.ISH.EQ.10) IP2=2
83 IF(ISH.EQ.4.AND.X(3).GT.0.0) IP2=8
85 IF(MOD(IP+3,4).LT.2) X(2)=-X(2)
87 IF(ISH.NE.1.AND.ISH.NE.10.AND.X(3).GT.0.0) IP1=2
89 IF(ISH.EQ.4.AND.X(3).GT.0.0) IP1=IP1+4
90 IF(ISH.EQ.4.AND.X(2).GT.0.0) IP1=IP1+1
92 IF(MOD(IP,2).EQ.1) X(1)=-X(1)
94 IF(ISH.NE.10) GO TO 10
95 X(1)=X(1)+X(2)*PARS(4)+X(3)*PARS(5)
96 X(2)=X(2)+X(3)*PARS(6)
101 IF(X(3).GT.0.0) IP4=11
102 X(1)=X(1)+X(2)*PARS(IP4)+X(3)*PARS(2)
103 X(2)=X(2)+X(3)*PARS(3)
112 IF(IROT.NE.0) CALL GINROT(X,Q(JROT+1),XT)
114 C NOW COMPUTE RMIN = PROJECTED R ON DX AND RMAX = R
115 C AND UPDATE LIMITS IF NECESSARY.
117 R2=(XT(1)+DX(1))**2+(XT(2)+DX(2))**2
118 IF(IAXIS.EQ.5) R2=R2+(XT(3)+DX(3))**2
122 IF(CL.LE.0.0) GO TO 30
124 XPT=DX(1)*XT(1)+DX(2)*XT(2)
125 IF(IAXIS.EQ.5) XPT=XPT+DX(3)*XT(3)
126 IF(DXS.LE.1.0E-05) GO TO 30
139 C POLYGONES AND POLYCONES
141 IF(ISH.EQ.11.AND.IAXIS.EQ.4)THEN
150 DO 145 I=7,IZLAST+2,3
151 IF(PARS(I).GT.TMPRAD)TMPRAD=PARS(I)
152 IF(PARS(I-1).LT.TMPMIN)TMPMIN=PARS(I-1)
156 PHIMAX=PHIMIN+PARS(2)
157 AANG=ABS(PHIMAX-PHIMIN)
159 AATMAX=NANG*360./AANG
162 IF(ALA.GT..5)LATMAX=LATMAX+1
163 AFINV=1./COS(PI/LATMAX)
167 ELSEIF(ISH.EQ.12.AND.IAXIS.EQ.4)THEN
176 DO 146 I=6,IZLAST+2,3
177 IF(PARS(I).GT.TMPRAD)TMPRAD=PARS(I)
178 IF(PARS(I-1).LT.TMPMIN)TMPMIN=PARS(I-1)
184 IF(ISH.GT.8.AND.ISH.NE.NSCTUB.AND.ISH.NE.13.AND.ISH.NE.14)GO TO 80
189 IF(ISH.GT.6.AND.ISH.NE.NSCTUB.AND.ISH.NE.13.AND.ISH.NE.14) IP3=1
192 IF(ISH.EQ.NSCTUB) THEN
193 S1 = (1.0-PARS(8))*(1.0+PARS(8))
194 IF( S1 .GT. 0.0) S1 = SQRT(S1)
195 S2 = (1.0-PARS(11))*(1.0+PARS(11))
196 IF( S2 .GT. 0.0) S2 = SQRT(S2)
197 IF( S2 .GT. S1 ) S1 = S2
203 ** APPROXIME TO A CYLINDER WHIT RADIUS
204 ** EQUAL TO THE ELLIPSE MAJOR AXIS
207 IF(PARS(1).GT.R) R=PARS(1)
213 R = SQRT(PARS(2)**2+(PARS(3)*TAN(PARS(4)*DEGRAD))**2)
217 IF(ISH.LE.6.OR.ISH.EQ.NSCTUB) GO TO 50
220 IF(PARS(5).GT.R) R=PARS(5)
222 IF(PARS(4).LT.RMN) RMN=PARS(4)
226 C ROTATE THE LOCAL Z AXIS.
235 IF(IROT.NE.0) CALL GINROT(X,Q(JROT+1),XT)
237 C COMPUTE RMIN AND RMAX ASSUMING COMPLETE TUBE HALF
238 C LENGTH DZ AND RADIUS R.
241 IF(IAXIS.EQ.4) ST2=(1+XT(3))*(1-XT(3))
242 DR=SQRT(DZ*DZ*ST2+R*R)
246 IF(ABS(XT(3)).EQ.1.0.AND.DXS.LT.1.0E-05) CL=RMN
252 IF(ISH.GT.9) GO TO 999
259 IF(IAXIS.EQ.5.AND.DXS.LT.1.0E-05) CL=PARS(1)