C++*******************************************************************
C
C DEFOCUS.F 
C
C **********************************************************************
C=*                                                                    *
C=* This file is part of:   SPIDER - Modular Image Processing System.  *
C=* SPIDER System Authors:  Joachim Frank & ArDean Leith               *
C=* Copyright 1985-2010  Health Research Inc.,                         *
C=* Riverview Center, 150 Broadway, Suite 560, Menands, NY 12204.      *
C=* Email: spider@wadsworth.org                                        *
C=*                                                                    *
C=* SPIDER is free software; you can redistribute it and/or            *
C=* modify it under the terms of the GNU General Public License as     *
C=* published by the Free Software Foundation; either version 2 of the *
C=* License, or (at your option) any later version.                    *
C=*                                                                    *
C=* SPIDER is distributed in the hope that it will be useful,          *
C=* but WITHOUT ANY WARRANTY; without even the implied warranty of     *
C=* merchantability or fitness for a particular purpose.  See the GNU  *
C=* General Public License for more details.                           *
C=* You should have received a copy of the GNU General Public License  *
C=* along with this program. If not, see <http://www.gnu.org/licenses> *
C=*                                                                    *
C **********************************************************************
C
C   DEFOCUS(IRTFLG)
C
C   PURPOSE:  CALCULATE THE DEFOCUS AND AMPLITUDE CONTRAST COMPONENT 
C             USING LEAST SQUARES METHOD
C
C   VARIABLES:
C      KFR : ARRAY OF ALL THE MINIMUM FOR ONE IMAGE
C      A : AMPLITUDE OF ALL MINIMA      
C      NP : NUMBER OF MINIMUS CHOSEN FOR EACH IMAGE
C      KP : ARRAY OF SP. FREQ. POINTS OF MINIMUS
C      NA : ARRAY OF ABBERATION COORESPONDING TO EACH MINIMUS
C      NUM : NUMBER OF IMAGE IN THE SERIES
C
C--*******************************************************************

        SUBROUTINE DEFOCUS(IRTFLG)

        INCLUDE 'CMBLOCK.INC'
        INCLUDE 'CMLIMIT.INC'

C       NOTE: DEFO003 PASSES BACK DATA IN BUF BUT
C             IT APPEARS UNUSED HERE, ALTHOUGH NEEDED BY NOISE.F al

        REAL            KFR,KP,NA
        COMMON /COMMUN/ KFR(20),A(20),NP(20), KP(20,20),NA(20,20)
        COMMON /IOBUF/  BUF(NBUFSIZ)

        CHARACTER *81   IMFILE
        IRTFLG = 0
        LUN1   = 8

        CALL RDPRMI(NUM,NDUM,NOT_USED,
     &              'HOW MANY IMAGES IN THE SERIES')

        WRITE(NOUT,*)' INPUT IMAGE IN SEQUENCE'
        DO  I=1,NUM
           WRITE(NOUT,*)'# ',I,'   IMAGE'

           MAXIM = 0
	   CALL OPFILEC(0,.TRUE.,IMFILE,LUN1,'O',IFORM,NSAM,NROW,NSLICE,
     &             MAXIM,'IMAGE', .FALSE.,IRTFLG)
	   IF (IRTFLG .NE. 0) RETURN

	   WRITE(NOUT,10)NSAM,NROW
10	   FORMAT(' FILE DIMENSIONS:', I5,' X',I5)

           CALL DEFO003(I,N,KFR,A,NSAM,SPMAX,LUN1,BUF,20,IRTFLG)
           IF (IRTFLG .NE. 0) RETURN

           CALL RDPRMI(NP(I),NDUM,NOT_USED,
     &            'HOW MANY POINTS DO YOU WANT?')
           IF (NUM .EQ. 1 .AND. NP(1) .EQ. 0) RETURN

           DO  J=1,NP(I)
              WRITE(NOUT,8)J
8             FORMAT(' POINT #',I2)
              CALL RDPRM2(KP(I,J),NA(I,J),NOT_USED,
     &                'SP. FREQ. POINTS/ABBERATION(PI)')
        
	   ENDDO
	ENDDO

        IF (NUM .GT. 1) THEN
           WRITE(NOUT,*) ' ENTER CONSTRAINTS: '
           WRITE(NOUT,*) '           (1) SAME AMPLITUDE,'
           WRITE(NOUT,*)
     &     '           (2) SAME AMPLITUDE AND DEFINE DEFOCUS INTERVAL,'
           WRITE(NOUT,*) '           (3) SAME DEFOCUS'     
           CALL RDPRMI(NCONSTRAIN, NDUM,NOT_USED,
     &        'CONSTRAINTS: (1), (2) OR (3)')
           IF (NCONSTRAIN .EQ. 3) THEN
              WRITE(*,*) '***NO PROGRAM NOW'
              CALL ERRT(100,'DEFOCUS',NE)
              RETURN

           ELSEIF (NCONSTRAIN .EQ. 2) THEN
              CALL DEFO001(NUM,NP,KP,NA,NSAM,SPMAX)

           ELSE
              IF (NUM .GT. 11) THEN
                 CALL DEFO2001(NUM,NP,KP,NA,NSAM,SPMAX)
              ELSE
                 CALL DEFO1001(NUM,NP,KP,NA,NSAM,SPMAX)
              ENDIF
           ENDIF
        ELSE
C	   SINGLE INPUT FILE CASE
           CALL DEFO1001(NUM,NP,KP,NA,NSAM,SPMAX)
        ENDIF

        RETURN
        END