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SUBROUTINE CONSTS (COORD)
C THIS ROUTINE CONSTRUCTS OR UPDATES THE SOLVENT-ACCESSIBLE
C SURFACE (SAS)
IMPLICIT DOUBLE PRECISION (A-H,O-Z)
INCLUDE 'SIZES'
DIMENSION XX(3),XA(3),XI(3),XJ(3),XSP(3,LENABC),COORD(3,*)
DIMENSION NSET(NPPA*NUMATM/2),NSETF(LENABC), N0(2)
LOGICAL DIN(NPPA),ISUP
COMMON / SOLV / FEPSI,RDS,DISEX2,NSPA,NPS,NPS2,NDEN,
1 COSURF(3,LENABC), SRAD(NUMATM),ABCMAT(LENAB2),
2 TM(3,3,NUMATM),QDEN(MAXDEN),DIRTM(3,NPPA),
3 BH(LENABC)
4 /SOLVI/ IATSP(LENABC+1),NAR(LENABC), NNX(2,NUMATM)
x /SOLVPS/ NPSX, NPS2X
COMMON /DIRVEC/ DIRVEC(3,NPPA), NN(3,NUMATM)
COMMON /MOLKST/ NUMAT,NAT(NUMATM),NFIRST(NUMATM),NMIDLE(NUMATM),
1 NLAST(NUMATM), NORBS, NELECS,NALPHA,NBETA,
2 NCLOSE,NOPEN,NDUMY,FRACT
DIMENSION IPIV(LENABC)
COMMON /AREAVD/ AREA
COMMON /CHANEL/ IFILES(30)
EQUIVALENCE(IW,IFILES(6))
EQUIVALENCE (ABCMAT(LENABC*LENABC+1),XSP)
NPS = NPSX
NPS2 = NPS2X
ISUP=(NPS.GT.0)
N0(1)=NPS2
N0(2)=-NPS
MAXNPS=SQRT(2*LENAB2+.251)-NDEN-.5
MAXNPS=MIN(MAXNPS,LENABC)
IF (MAXNPS .LT. 3*NUMAT) THEN
WRITE(IW,*)' PARAMETER LENABC MUST BE INCREASED FOR THIS SYSTEM
1'
STOP ' PARAMETER LENABC MUST BE INCREASED FOR THIS SYSTEM
1'
ENDIF
IF (ISUP) THEN
NPS3=LENABC-NPS
DO 10 I=NPS,1,-1
IATSP(NPS3+I)=IATSP(I)
DO 10 IX=1,3
COSURF(IX,NPS3+I)=COSURF(IX,I)
10 CONTINUE
NPS3=NPS3+1
END IF
SDIS=0.D0
FDIAG=1.05D0*SQRT(NPPA+0.D0)
INSET=1
IATSP(LENABC+1)=0
NPS = 0
AREA=0.D0
DO 340 I=1,NUMAT
DS=SQRT(4.D0/NSPA)
IF (NAT(I) .EQ. 1) DS=2*DS
C2DS=COS(2.D0*DS)
R=SRAD(I)
RI=R-RDS
DO 20 IX=1,3
20 XA(IX)=COORD(IX,I)
NPS0=NPS+1
IF(ISUP) THEN
IF (NPS .GE. NPS3) STOP 'NPS .GT. NPS3'
NPS2=NPS3
* IF (IATSP(NPS0) .NE. I) GO TO 340
DO 30 IPS=NPS2,LENABC+1
30 IF(IATSP(IPS) .NE. I) GO TO 40
40 NPS3=IPS
C TRANSFORM COSURF ACCORDING TO TM(INV)
DO 50 J=NPS2,NPS3-1
XX(1)=COSURF(1,J)
XX(2)=COSURF(2,J)
XX(3)=COSURF(3,J)
COSURF(1,J)=XX(1)*TM(1,1,I)+XX(2)*TM(1,2,I)+XX(3)*TM(1,3,
1I)
COSURF(2,J)=XX(1)*TM(2,1,I)+XX(2)*TM(2,2,I)+XX(3)*TM(2,3,
1I)
COSURF(3,J)=XX(1)*TM(3,1,I)+XX(2)*TM(3,2,I)+XX(3)*TM(3,3,
1I)
50 CONTINUE
NN1=NN(1,I)
NN2=NN(2,I)
NN3=NN(3,I)
ELSE
C SEARCH FOR 3 NEAREST NEIGHBOR ATOMS
DIST1=1.D20
DIST2=1.D20
DIST3=1.D20
NN1=0
NN2=0
NN3=0
DO 70 J=1,NUMAT
IF (J.EQ. I) GO TO 70
DIST=0.D0
DO 60 IX=1,3
60 DIST=DIST+(XA(IX)-COORD(IX,J))**2
IF (DIST+0.05D0 .LT. DIST3) THEN
DIST3=DIST
NN3=J
END IF
IF (DIST3+0.05D0 .LT. DIST2) THEN
DIST=DIST2
DIST2=DIST3
DIST3=DIST
NN3=NN2
NN2=J
END IF
IF (DIST2+0.05D0 .LT. DIST1) THEN
DIST=DIST1
DIST1=DIST2
DIST2=DIST
NN2=NN1
NN1=J
END IF
70 CONTINUE
NN(1,I)=NN1
NN(2,I)=NN2
NN(3,I)=NN3
ENDIF
C BUILD NEW TRANSFORMATION MATRIX
IF (NN1 .EQ. 0) THEN
TM(1,1,I)=1.D0
TM(1,2,I)=0.D0
TM(1,3,I)=0.D0
ELSE
DIST1=0.D0
DO 80 IX=1,3
80 DIST1=DIST1+(XA(IX)-COORD(IX,NN1))**2
DIST=1.D0/SQRT(DIST1)
TM(1,1,I)=(COORD(1,NN1)-XA(1))*DIST
TM(1,2,I)=(COORD(2,NN1)-XA(2))*DIST
TM(1,3,I)=(COORD(3,NN1)-XA(3))*DIST
END IF
90 IF (NN2 .EQ. 0) THEN
DIST=SQRT(TM(1,3,I)**2+TM(1,2,I)**2+TM(1,1,I)**2)
TM(2,1,I)=-TM(1,2,I)/DIST
TM(2,2,I)=TM(1,1,I)/DIST
TM(2,3,I)=0.D0
ELSE
DIST2=0.D0
DO 100 IX=1,3
100 DIST2=DIST2+(XA(IX)-COORD(IX,NN2))**2
DIST=1.D0/SQRT(DIST2)
XX(1)=(COORD(1,NN2)-XA(1))*DIST
XX(2)=(COORD(2,NN2)-XA(2))*DIST
XX(3)=(COORD(3,NN2)-XA(3))*DIST
SP=XX(1)*TM(1,1,I)+XX(2)*TM(1,2,I)+XX(3)*TM(1,3,I)
IF (SP*SP .GT. 0.99D0) THEN
NN2=NN3
NN3=0
DIST2=DIST3
GO TO 90
END IF
SININV=1.D0/SQRT(1.D0-SP*SP)
TM(2,1,I)=(XX(1)-SP*TM(1,1,I))*SININV
TM(2,2,I)=(XX(2)-SP*TM(1,2,I))*SININV
TM(2,3,I)=(XX(3)-SP*TM(1,3,I))*SININV
END IF
TM(3,1,I)=TM(1,2,I)*TM(2,3,I)-TM(2,2,I)*TM(1,3,I)
TM(3,2,I)=TM(1,3,I)*TM(2,1,I)-TM(2,3,I)*TM(1,1,I)
TM(3,3,I)=TM(1,1,I)*TM(2,2,I)-TM(2,1,I)*TM(1,2,I)
C TRANSFORM DIRVEC ACCORDING TO TM
DO 110 J=1,NPPA
XX(1)=DIRVEC(1,J)
XX(2)=DIRVEC(2,J)
XX(3)=DIRVEC(3,J)
DO 110 IX=1,3
X=XX(1)*TM(1,IX,I)+XX(2)*TM(2,IX,I)+XX(3)*TM(3,IX,I)
DIRTM(IX,J)=X
110 CONTINUE
C FIND THE POINTS OF THE BASIC GRID ON THE SAS
NAREA=0
DO 160 J = 1,NPPA
DIN(J)=.FALSE.
DO 130 IX=1,3
XX(IX) = XA(IX) + DIRTM(IX,J)* R
130 CONTINUE
DO 150 K = 1, NUMAT
IF (K . EQ. I) GO TO 150
DIST=0.D0
DO 140 IX=1,3
DIST = DIST + (XX(IX) - COORD(IX,K))**2
140 CONTINUE
DIST=SQRT(DIST)-SRAD(K)
IF (DIST .LT. 0) GO TO 160
150 CONTINUE
NAREA=NAREA+1
DIN(J)=.TRUE.
160 CONTINUE
IF( NAREA.EQ.0 ) GOTO 340
AREA=AREA+NAREA*RI*RI
IF (ISUP) THEN
DO 120 J=NPS2,NPS3-1
NPS=NPS+1
IATSP(NPS)=I
XX(1)=COSURF(1,J)
XX(2)=COSURF(2,J)
XX(3)=COSURF(3,J)
COSURF(1,NPS)=XX(1)*TM(1,1,I)+XX(2)*TM(2,1,I)+XX(3)*TM(3,
11,I)
COSURF(2,NPS)=XX(1)*TM(1,2,I)+XX(2)*TM(2,2,I)+XX(3)*TM(3,
12,I)
COSURF(3,NPS)=XX(1)*TM(1,3,I)+XX(2)*TM(2,3,I)+XX(3)*TM(3,
13,I)
120 CONTINUE
ELSE
I0=2-1/NAT(I)
JMAX=N0(I0)
I0=3*(I0-1)*NPPA-3
DO 45 J=1,JMAX
NPS=NPS+1
IATSP(NPS)=I
XX(1)=ABCMAT(I0+J*3+1)
XX(2)=ABCMAT(I0+J*3+2)
XX(3)=ABCMAT(I0+J*3+3)
COSURF(1,NPS)=XX(1)*TM(1,1,I)+XX(2)*TM(2,1,I)+XX(3)*TM(3,1,I)
COSURF(2,NPS)=XX(1)*TM(1,2,I)+XX(2)*TM(2,2,I)+XX(3)*TM(3,2,I)
COSURF(3,NPS)=XX(1)*TM(1,3,I)+XX(2)*TM(2,3,I)+XX(3)*TM(3,3,I)
45 CONTINUE
ENDIF
200 SDIS0=SDIS
DO 210 IPS=NPS0,NPS
NAR(IPS)=0
XSP(1,IPS)=0.D0
XSP(2,IPS)=0.D0
XSP(3,IPS)=0.D0
210 CONTINUE
DO 250 J=1,NPPA
IF (.NOT. DIN(J)) GO TO 250
SPM=-1.D0
X1=DIRTM(1,J)
X2=DIRTM(2,J)
X3=DIRTM(3,J)
DO 220 IPS=NPS0,NPS
SP=X1*COSURF(1,IPS)+X2*COSURF(2,IPS)+X3*COSURF(3,IPS)
IF (SP .LT. SPM) GO TO 220
SPM=SP
IPM=IPS
220 CONTINUE
IF (SPM .LT. C2DS) THEN
NPS=NPS+1
IF (NPS .GT. MAXNPS) THEN
WRITE(IW,*) 'NPS IS GREATER THAN MAXNPS-USE SMALLER NS
1PA'
STOP 'NPS GREATER THAN MAXNPS'
END IF
DO 230 IX=1,3
230 COSURF(IX,NPS)=DIRTM(IX,J)
IATSP(NPS)=I
GO TO 200
END IF
NAR(IPM)=NAR(IPM)+1
DO 240 IX=1,3
240 XSP(IX,IPM)=XSP(IX,IPM)+DIRTM(IX,J)
250 CONTINUE
SDIS=0.D0
IPS=NPS0-1
IF(NPS.LT.IPS) GOTO 200
260 IPS=IPS+1
352 IF(NAR(IPS).EQ.0)THEN
NPS=NPS-1
IF(NPS.LT.IPS) GOTO 200
DO 369 JPS=IPS,NPS
NAR(JPS)=NAR(JPS+1)
XSP(1,JPS)=XSP(1,JPS+1)
XSP(2,JPS)=XSP(2,JPS+1)
369 XSP(3,JPS)=XSP(3,JPS+1)
GOTO 352
ENDIF
DIST=0.D0
DO 280 IX=1,3
X=XSP(IX,IPS)
DIST=DIST+X*X
280 CONTINUE
SDIS=SDIS+DIST
DIST=1.D0/SQRT(DIST)
DO 290 IX=1,3
290 COSURF(IX,IPS)=XSP(IX,IPS)*DIST
IF(IPS.LT.NPS) GOTO 260
IF (ABS(SDIS-SDIS0) .GT. 1.D-5) GO TO 200
DO 310 IPS=NPS0,NPS
NSETF(IPS)=INSET
INSET=INSET+NAR(IPS)
NAR(IPS)=0
DO 300 IX=1,3
300 XSP(IX,IPS)=XA(IX)+COSURF(IX,IPS)*RI
310 CONTINUE
DO 330 J=1,NPPA
IF (.NOT. DIN(J)) GO TO 330
SPM=-1.D0
X1=DIRTM(1,J)
X2=DIRTM(2,J)
X3=DIRTM(3,J)
DO 320 IPS=NPS0,NPS
SP=X1*COSURF(1,IPS)+X2*COSURF(2,IPS)+X3*COSURF(3,IPS)
IF (SP .LT. SPM) GO TO 320
SPM=SP
IPM=IPS
320 CONTINUE
IF (SPM .LT. C2DS) GO TO 330
NARA=NAR(IPM)
NSET(NSETF(IPM)+NARA)=J
NAR(IPM)=NARA+1
330 CONTINUE
340 CONTINUE
AREA=AREA*4.D0*3.14159D0/NPPA
C FILLING AAMAT
DO 450 IPS=1,NPS
I=IATSP(IPS)
RI=SRAD(I)-RDS
NARI=NAR(IPS)
NSETFI=NSETF(IPS)
AA=0.D0
DO 350 K=NSETFI,NSETFI+NARI-1
J1=NSET(K)
AA=AA+FDIAG
X1=DIRVEC(1,J1)
X2=DIRVEC(2,J1)
X3=DIRVEC(3,J1)
DO 350 L=NSETFI,K-1
J2=NSET(L)
AA=AA+2.D0/SQRT((X1-DIRVEC(1,J2))**2+
1 (X2-DIRVEC(2,J2))**2+(X3-DIRVEC(3,J2))**2)
350 CONTINUE
AA=AA/RI/NARI**2
ABCMAT(IPS+(IPS-1)*NPS)=AA
DO 360 IX=1,3
XI(IX)=COORD(IX,I)
360 XA(IX)=XSP(IX,IPS)
DO 440 JPS=IPS+1,NPS
NARJ=NAR(JPS)
NSETFJ=NSETF(JPS)
J=IATSP(JPS)
DIST=0.D0
DO 370 IX=1,3
XJ(IX)=COORD(IX,J)-XI(IX)
370 DIST=DIST+(XSP(IX,JPS)-XA(IX))**2
IF (DIST .LT. DISEX2) THEN
RJ=SRAD(J)-RDS
AIJ=0.D0
DO 430 K=NSETFI,NSETFI+NARI-1
J1=NSET(K)
DO 380 IX=1,3
380 XX(IX)=DIRVEC(IX,J1)*RI
IF (I .NE. J) THEN
X1=XX(1)*TM(1,1,I)+XX(2)*TM(2,1,I)+XX(3)*TM(3,1,I)-
1XJ(1)
X2=XX(1)*TM(1,2,I)+XX(2)*TM(2,2,I)+XX(3)*TM(3,2,I)-
1XJ(2)
X3=XX(1)*TM(1,3,I)+XX(2)*TM(2,3,I)+XX(3)*TM(3,3,I)-
1XJ(3)
DO 400 L=NSETFJ,NSETFJ+NARJ-1
J2=NSET(L)
DO 390 IX=1,3
390 XX(IX)=DIRVEC(IX,J2)*RJ
Y1=XX(1)*TM(1,1,J)+XX(2)*TM(2,1,J)+XX(3)*TM(3,1,
1J)-X1
Y2=XX(1)*TM(1,2,J)+XX(2)*TM(2,2,J)+XX(3)*TM(3,2,
1J)-X2
Y3=XX(1)*TM(1,3,J)+XX(2)*TM(2,3,J)+XX(3)*TM(3,3,
1J)-X3
AIJ=AIJ+1.D0/SQRT(Y1*Y1+Y2*Y2+Y3*Y3)
400 CONTINUE
ELSE
410 DO 420 L=NSETFJ,NSETFJ+NARJ-1
J2=NSET(L)
C AA=((DIRVEC(1,J2)*RJ-XX(1))**2+(DIRVEC(2,J2)*RJ
C & -XX(2))**2+(DIRVEC(3,J2)*RJ-XX(3))**2)
C ***** Modified by Jiro Toyoda at 1994-05-25 *****
C AIJ=AIJ+((DIRVEC(1,J2)*RJ-XX(1))**2+(DIRVEC(2,J2
C 1)*RJ -XX(2))**2+(DIRVEC(3,J2)*RJ-XX(3))**2)**-.5
C 2D0
AIJ=AIJ+((DIRVEC(1,J2)*RJ-XX(1))**2
1 +(DIRVEC(2,J2)*RJ-XX(2))**2
2 +(DIRVEC(3,J2)*RJ-XX(3))**2)**(-.5D0)
C ***************************** at 1994-05-25 *****
420 CONTINUE
END IF
430 CONTINUE
AIJ=AIJ/NARI/NARJ
ELSE
AIJ=1.D0/SQRT(DIST)
END IF
ABCMAT(IPS+(JPS-1)*NPS)=AIJ
ABCMAT(JPS+(IPS-1)*NPS)=AIJ
440 CONTINUE
450 CONTINUE
C INVERT A-MATRIX
CALL DGETRF(NPS,NPS,ABCMAT,NPS,IPIV,INFO)
IF( INFO.NE.0 ) THEN
WRITE(*,*) ' DGETRF FAILED WITH ERROR CODE ', INFO
STOP 'CONSTS'
ENDIF
CALL DGETRI(NPS,ABCMAT,NPS,IPIV,XSP, 3*LENABC,INFO)
IF( INFO.NE.0 ) THEN
WRITE(*,*) ' DGETRI FAILED WITH ERROR CODE ', INFO
STOP 'CONSTS'
ENDIF
C STORE INV. A-MATRIX AS LOWER TRIANGLE
II=0
DO 460 I=1,NPS
DO 460 J=1,I
II=II+1
ABCMAT(II)=ABCMAT(J+(I-1)*NPS)
460 CONTINUE
NPS2=II
RETURN
END
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