C
C Program CRT2D3D transforming 2-D system of rays to 3-D system of rays C to be processed by program MTT C C Version: 5.80 C Date: 2003, November 23 C C Coded by: Ludek Klimes C Department of Geophysics, Charles University Prague, C Ke Karlovu 3, 121 16 Praha 2, Czech Republic, C E-mail: klimes@seis.karlov.mff.cuni.cz C C....................................................................... C C Description of data files: C C Input data read from the standard input device (*): C The data are read by the list directed input (free format) and C consist of a single string 'SEP': C 'SEP'...String in apostrophes containing the name of the input C SEP parameter or history file with the input data. C No default, 'SEP' must be specified and cannot be blank. C C C Input data file 'SEP': C File 'SEP' has the form of the SEP C parameter file. The parameters, which do not differ from their C defaults, need not be specified in file 'SEP'. C Names of the input and output files: C CRTOUT='string'... File with the names of the output files of C program CRT. A single set of CRT output files is read C from CRTOUT. The CRT output files are assumed to contain C a 2-D system of rays. C For general description of file CRTOUT refer to C file writ.for. C Only files CRT-R, C CRT-I and C CRT-T are read by CRT2D3D. C Default: CRTOUT=' ' which means 'CRT-R'='r01.out', C 'CRT-I'='r01i.out', 'CRT-T'='t01.out' C CRTNEW='string'... File with the names of the output files C to contain 3-D sytem of rays composed of two 2-D systems C of rays shifted by vectors -(DX1,DX2,DX3) and C +(DX1,DX2,DX3). C The files CRT-R, CRT-I and CRT-T are generated. C The form of file CRTNEW is the same as of file CRTOUT. C Default: CRTNEW=' ' which means 'CRT-R'='r01-3d.out', C 'CRT-I'='r01i-3d.out', 'CRT-T'='t01-3d.out' C Data describing translation vector: C DX1=real, DX2=real, DX3=real ... Translation vector to be used C to create the 3-D system of rays composed of two input 2-D C systems of rays shifted by vectors -(DX1,DX2,DX3) and C +(DX1,DX2,DX3). The vector thus should be perpendicular C to the input 2-D system of rays. C Default: DX1=0., DX2=0., DX3=0. C C----------------------------------------------------------------------- C C Memory management: INCLUDE 'ram.inc' C ram.inc INTEGER IRAM(MRAM) EQUIVALENCE (IRAM,RAM) C C Common block /POINTC/ to store the results of complete ray tracing: INCLUDE 'pointc.inc' C pointc.inc C None of the storage locations of the common block are altered. C C Subroutines and external functions required: EXTERNAL AP00 C AP00... File 'ap.for'. C C----------------------------------------------------------------------- C CHARACTER*80 FILSEP,FCRT,FNEW,CH INTEGER LU0 PARAMETER (LU0=1) C C Auxiliary storage locations: INTEGER LU1,LU2,LU3,LU4,I,J,I1,I2,I3,I100,N100,NRAM PARAMETER (LU1=1,LU2=2,LU3=3,LU4=4) CHARACTER*80 FILE1,FILE2,FILE3,FILE4,FILE5,FILE6 REAL DX1,DX2,DX3,X1,X2,X3 C C Output format: INTEGER IFORM CHARACTER*10 FORMAT DATA IFORM/99999/,FORMAT/'(I6,I6,I6)'/ C C----------------------------------------------------------------------- C C Reading name of SEP file with input data: WRITE(*,'(A)') '+CRT2D3D: Enter input filename: ' FILSEP=' ' READ(*,*) FILSEP WRITE(*,'(A)') '+CRT2D3D: Working ... ' C C Reading all data from the SEP file into the memory: IF (FILSEP.NE.' ') THEN CALL RSEP1(LU0,FILSEP) ELSE C CRT2D3D-03 CALL ERROR('CRT2D3D-03: SEP file not given') C Input file in the form of the SEP (Stanford Exploration Project) C parameter or history file must be specified. C There is no default filename. ENDIF C C Reading input parameters from the SEP file: CALL RSEP3R('DX1',DX1,0.) CALL RSEP3R('DX2',DX2,0.) CALL RSEP3R('DX3',DX3,0.) CALL RSEP3T('CRTOUT',FCRT,' ') CALL RSEP3T('CRTNEW',FNEW,' ') C C Opening input and output files: FILE1='r01.out' FILE2='r01i.out' FILE3='t01.out' FILE4='r01-3d.out' FILE5='r01i-3d.out' FILE6='t01-3d.out' IF (FCRT.NE.' ') THEN OPEN (LU1,FILE=FCRT,FORM='FORMATTED',STATUS='OLD') READ (LU1,*) FILE1,CH,FILE2,FILE3 CLOSE (LU1) ENDIF IF (FNEW.NE.' ') THEN OPEN (LU1,FILE=FNEW,FORM='FORMATTED',STATUS='OLD') READ (LU1,*) FILE4,CH,FILE5,FILE6 CLOSE (LU1) ENDIF C C Triangles: WRITE(*,'(2A)') '+CRT2D3D: Writing triangles ... ' OPEN(LU1,FILE=FILE3,STATUS='OLD') OPEN(LU2,FILE=FILE6) N100=0 C C Loop for the triangles 10 CONTINUE C Reading the interval READ(LU1,*,END=20) I1,I2,I3 N100=MAX0(I1,I2,N100) C Setting output format IF(2*I1.GT.IFORM.OR.2*I2.GT.IFORM) THEN IFORM1=IFORM1*10+9 FORMAT(3:3)=CHAR(ICHAR(FORMAT(3:3))+1) FORMAT(6:6)=FORMAT(3:3) FORMAT(9:9)=FORMAT(3:3) END IF IF (I1.EQ.0) THEN C New elementary wave: WRITE(LU2,FORMAT) I1,I2,I3 ELSE IF(I3.NE.0) THEN C CRT2D3D-01 C CALL ERROR('CRT2D3D-01: Input data are not 2-D') END IF C Writing the triangles WRITE(LU2,FORMAT) 2*I1-1,2*I1,2*I2-1 WRITE(LU2,FORMAT) 2*I1,2*I2-1,2*I2 END IF GO TO 10 C 20 CONTINUE CLOSE(LU1) CLOSE(LU2) C C Writing rays: WRITE(*,'(2A)') '+CRT2D3D: 0% of rays rewritten ' OPEN(LU1,FILE=FILE1,FORM='UNFORMATTED',STATUS='OLD') OPEN(LU2,FILE=FILE2,FORM='UNFORMATTED',STATUS='OLD') OPEN(LU3,FILE=FILE4,FORM='UNFORMATTED') OPEN(LU4,FILE=FILE5,FORM='UNFORMATTED') I100=0 C C Loop for the points of rays NRAM=0 50 CONTINUE C Reading the results of the complete ray tracing CALL AP00(0,LU1,LU2) IF(IPT.LE.1.AND.NRAM.GT.0) THEN C New ray - recording the duplication of the last ray J=0 51 CONTINUE WRITE(LU3) (IRAM(I),I=J+1,J+6),(RAM(I),I=J+7,J+14+IRAM(J+3)) J=J+14+IRAM(J+3) IF(J.LT.NRAM) GO TO 51 NRAM=0 END IF IF(IWAVE.LT.1) THEN C End of rays GO TO 60 END IF IF(IPT.LE.1)THEN C New ray - recording the initial points X1=YI(3)-DX1 X2=YI(4)-DX2 X3=YI(5)-DX3 WRITE(LU4) -IWAVE,2*IRAY-1,ICB1I,IEND,ISHEET,IREC,YLI, * YI(1),YI(2),X1,X2,X3,(YI(I),I=6,MYI) X1=YI(3)+DX1 X2=YI(4)+DX2 X3=YI(5)+DX3 WRITE(LU4) -IWAVE,2*IRAY ,ICB1I,IEND,ISHEET,IREC,YLI, * YI(1),YI(2),X1,X2,X3,(YI(I),I=6,MYI) END IF X1=Y(3)-DX1 X2=Y(4)-DX2 X3=Y(5)-DX3 WRITE(LU3) IWAVE,2*IRAY-1,NY,ICB1,ISRF,KMAH, * X,UEBRAY,YL,Y(1),Y(2),X1,X2,X3,(Y(I),I=6,NY) IF(NRAM+12+NY.GT.MRAM) THEN C CRT2D3D-02 C CALL ERROR('CRT2D3D-02: Too small array RAM to store a ray') C Dimension MRAM of array RAM in include file C ram.inc C should probably be increased to accommodate a long ray. END IF IRAM(NRAM+1)=IWAVE IRAM(NRAM+2)=2*IRAY IRAM(NRAM+3)=NY IRAM(NRAM+4)=ICB1 IRAM(NRAM+5)=ISRF IRAM(NRAM+6)=KMAH RAM(NRAM+7)=X RAM(NRAM+8)=UEBRAY DO 56 I=1,6 RAM(NRAM+8+I)=YL(I) 56 CONTINUE RAM(NRAM+15)=Y(1) RAM(NRAM+16)=Y(2) RAM(NRAM+17)=Y(3)+DX1 RAM(NRAM+18)=Y(4)+DX2 RAM(NRAM+19)=Y(5)+DX3 DO 57 I=6,NY RAM(NRAM+14+I)=Y(I) 57 CONTINUE NRAM=NRAM+14+NY IF(100*IRAY.GE.I100*N100) THEN WRITE(*,'(A,I3)') '+CRT2D3D:',I100 I100=I100+1 END IF GO TO 50 C 60 CONTINUE CLOSE(LU1) CLOSE(LU2) CLOSE(LU3) CLOSE(LU4) WRITE(*,'(A)') '+CRT2D3D: Done. ' C STOP END C C======================================================================= C INCLUDE 'error.for' C error.for INCLUDE 'sep.for' C sep.for INCLUDE 'length.for' C length.for INCLUDE 'ap.for' C ap.for C C======================================================================= C