123 lines
4.3 KiB
Fortran
123 lines
4.3 KiB
Fortran
C-----------------------------------------------------------------------
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C This subroutine calculates the reciprocal coordinates of a reflection
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C Called by 3 commands :--
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C AH - to convert Euler angles to h,k,l
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C MR - to convert direct beam Euler angles to h,k,l
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C FI - to convert face indexing Euler angles to h,k,l
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C-----------------------------------------------------------------------
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SUBROUTINE RCPCOR
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INCLUDE 'COMDIF'
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DIMENSION RM1(3,3),XA(3),HA(3)
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IF (KI .EQ. 'AH') THEN
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WRITE (COUT,10000)
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CALL GWRITE (ITP,' ')
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ENDIF
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CALL MATRIX (R,RM1,RJUNK,RJUNK,'INVERT')
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100 IF (KI .EQ. 'MR') THEN
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CALL ANGET (THETAS,OMEGS,CHIS,PHIS)
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OMEGS = OMEGS - 90.0 + 0.5*THETAS
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ELSE IF (KI .EQ. 'FI') THEN
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THETAS = THETA
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OMEGS = OMEGA
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CHIS = CHI
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PHIS = PHI
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ELSE
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WRITE (COUT,11000)
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CALL FREEFM (ITR)
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IF (RFREE(1) .EQ. 0) THEN
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KI = ' '
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RETURN
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ENDIF
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THETAS = RFREE(1)
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OMEGS = RFREE(2)
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CHIS = RFREE(3)
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PHIS = RFREE(4)
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ENDIF
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CO = COS(OMEGS/DEG)
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SO = SIN(OMEGS/DEG)
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CC = COS(CHIS/DEG)
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SC = SIN(CHIS/DEG)
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CP = COS(PHIS/DEG)
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SP = SIN(PHIS/DEG)
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ESS = 2.0*SIN(THETAS/(2.0*DEG))
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XA(1) = ESS*(CO*CC*CP - SO*SP)
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XA(2) = ESS*(CO*CC*SP + SO*CP)
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XA(3) = ESS*CO*SC
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CALL MATRIX (RM1,XA,HA,RJUNK,'MVMULT')
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WRITE (COUT,12000) HA
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CALL GWRITE (ITP,' ')
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IF (KI .EQ. 'MR') KI = ' '
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IF (KI .EQ. 'MR' .OR. KI .EQ. 'FI') RETURN
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GO TO 100
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10000 FORMAT (' Calculate Reciprocal Coordinates ')
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11000 FORMAT (' Type the reflection angles (End) ',$)
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12000 FORMAT (5X,' Reciprocal Coordinates (h,k,l)',3F10.3)
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END
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C-----------------------------------------------------------------------
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C Index faces for ABSORP when they are set so that the face normal is
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C in the equator plane and normal to the microscope viewing direction
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C at the Kappa angles -45, 78, kappa (-60 start), phi (0 start)
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C-----------------------------------------------------------------------
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SUBROUTINE FACEIN
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INCLUDE 'COMDIF'
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DATA ISENSE/-1/
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NATT = 0
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ICOL = 0
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C-----------------------------------------------------------------------
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C Set the microscope to the initial viewing position and print message
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C The viewing position Kappa angles are -45, 78, -60, 0
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C The Euler equivalent is used below.
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C-----------------------------------------------------------------------
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THETA = -90.0
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OMEGA = 102.63
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CHI = -45.0
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PHI = -20.37
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CALL ANGSET (THETA,OMEGA,CHI,PHI,NATT,ICOL)
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WRITE (COUT,10000)
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CALL GWRITE (ITP,' ')
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C-----------------------------------------------------------------------
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C Get the adjusted angles and transform them
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C-----------------------------------------------------------------------
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100 WRITE (COUT,11000)
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CALL ALFNUM (ANS)
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C write (cout,99990)
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C99990 format (' Type omk, kap, phk for face ',$)
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C call freefm (itr)
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C omk = rfree(1)
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C if (omk .eq. 0) omk = 78.0
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C rka = rfree(2)
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C phk = rfree(3)
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C call eulkap (1,omega,chi,phi,omk,rka,phk,isttus)
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C99991 format (i3,7f8.2)
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CALL ANGET (THETA,OMEGA,CHI,PHI)
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CALL EULKAP (0,OMEGA,CHI,PHI,OMK,RKA,PHK,ISTTUS)
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C i = 2
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C write (COUT,99991) i,theta,omega,chi,phi,omk,rka,phk
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C call gwrite (itp, ' ')
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C OMK = OMK - 135.0
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IRL = 1
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IF (ANS .EQ. 'L') IRL = 0
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OMK = OMK - IRL*180.0
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CALL EULKAP (1,OMEGA,CHI,PHI,OMK,RKA,PHK,ISTTUS)
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THETA = 20.0
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C i = 3
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C write (COUT,99991) i,theta,omega,chi,phi,omk,rka,phk
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C call gwrite (itp, ' ')
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CALL RCPCOR
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WRITE (COUT,12000)
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CALL YESNO ('Y',ANS)
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IF (ANS .EQ. 'Y') GO TO 100
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KI = ' '
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RETURN
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10000 FORMAT (/20X,' CAD-4 Face Indexing'/
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$ ' Adjust Kappa and Phi with the pocket terminal,',
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$ ' so that the face-normal is'/
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$ ' a. Horizontal,'/
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$ ' b. Normal to the view direction, pointing right',
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$ ' or left.')
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11000 FORMAT (' When the face is set correctly, type R or L to',
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$ ' indicate whether'/
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$ ' the normal is pointing to the Right or Left (R) ',$)
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12000 FORMAT (/' Index another face (Y) ? ',$)
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END
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