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SUBROUTINE CONCLD (ICASE,IOOP)
C
C +-----------------------------------------------------------------+
C | |
C | Copyright (C) 1986 by UCAR |
C | University Corporation for Atmospheric Research |
C | All Rights Reserved |
C | |
C | NCARGRAPHICS Version 1.00 |
C | |
C +-----------------------------------------------------------------+
C
C
C
C
C
COMMON /CONRA1/ CL(30) ,NCL ,OLDZ ,PV(210) ,
1 FINC ,HI ,FLO
COMMON /CONRA2/ REPEAT ,EXTRAP ,PER ,MESS ,
1 ISCALE ,LOOK ,PLDVLS ,GRD ,
2 CINC ,CHILO ,CON ,LABON ,
3 PMIMX ,SCALE ,FRADV ,EXTRI ,
4 BPSIZ ,LISTOP
COMMON /CONRA3/ IREC
COMMON /CONRA4/ NCP ,NCPSZ
COMMON /CONRA5/ NIT ,ITIPV
COMMON /CONRA6/ XST ,YST ,XED ,YED ,
1 STPSZ ,IGRAD ,IG ,XRG ,
2 YRG ,BORD ,PXST ,PYST ,
3 PXED ,PYED ,ITICK
COMMON /CONRA7/ TITLE ,ICNT ,ITLSIZ
COMMON /CONRA8/ IHIGH ,INMAJ ,INLAB ,INDAT ,
1 LEN ,IFMT ,LEND ,
2 IFMTD ,ISIZEP ,INMIN
COMMON /CONRA9/ ICOORD(500), NP ,MXXY ,TR ,
1 BR ,TL ,BL ,CONV ,
2 XN ,YN ,ITLL ,IBLL ,
3 ITRL ,IBRL ,XC ,YC ,
4 ITLOC(210) ,JX ,JY ,ILOC ,
5 ISHFCT ,XO ,YO ,IOC ,NC
COMMON /CONR10/ NT ,NL ,NTNL ,JWIPT ,
1 JWIWL ,JWIWP ,JWIPL ,IPR ,
2 ITPV
COMMON /CONR11/ NREP ,NCRT ,ISIZEL ,
1 MINGAP ,ISIZEM ,
2 TENS
COMMON /CONR12/ IXMAX ,IYMAX ,XMAX ,YMAX
LOGICAL REPEAT ,EXTRAP ,PER ,MESS ,
1 LOOK ,PLDVLS ,GRD ,LABON ,
2 PMIMX ,FRADV ,EXTRI ,CINC ,
3 TITLE ,LISTOP ,CHILO ,CON
COMMON /CONR13/XVS(50),YVS(50),ICOUNT,SPVAL,SHIELD,
1 SLDPLT
LOGICAL SHIELD,SLDPLT
COMMON /CONR15/ ISTRNG
CHARACTER*64 ISTRNG
COMMON /CONR16/ FORM
CHARACTER*10 FORM
COMMON /CONR17/ NDASH, IDASH, EDASH
CHARACTER*10 NDASH, IDASH, EDASH
C
C
INTEGER GOOP
C
SAVE
DATA GOOP/0/
C
C STATEMENT FUNCTIONS FOR CONTOUR PLACEMENT WITHIN CELLS
C
CX(W1,W2) = STPSZ*( (W1-CONV)/(W1-W2) )
CY(W1,W2) = STPSZ*( (W1-CONV)/(W1-W2) )
IC = ICASE
ICASE = 0
C
C SPECIAL PROCESSING IF SHIELDING ACTIVATED
C
IF (.NOT.SHIELD) GO TO 1
C
C CHECK IF ANY CELL CORNER CONTAINS A SPECIAL VALUE
C IF SO THEN FLAG AND RETURN
C
IF (TR.NE.SPVAL.AND.BR.NE.SPVAL.AND.TL.NE.SPVAL.AND.BL.NE.SPVAL)
1 GO TO 1
C
C SPECIAL VALUE IN CELL FLAG AND RETURN
C
ICASE = -1
RETURN
C
C IF CURRENT BR VALUE LESS THAN CONTOUR THEN NEIGHBOR WILL BE WHERE
C CONTOUR IS DRAWN.
C
1 CONTINUE
C
IF (BR.LT.CONV) GO TO 90
C
C CURRENT LOCATION IS WHERE CONTOUR WILL BE DRAWN
C
C TEST FOR VERTICAL CONTOUR BREAK
C
IF (BL.GE.CONV) GO TO 60
C
C VERTICAL CONTOUR BREAK
C
C CASE 1 LEFT NEIGHBOR LESS THAN CONTOUR LEVEL AND CURRENT
C LOCATION GE CONTOUR VALUE
C
IF (TR.GE.CONV) GO TO 40
C
C CASE 1A CONTOUR LOWER RIGHT
C
C
C CONTOUR FROM UPPER RIGHT
C
XO = XC-CX(BR,TR)
YO = YC
YN = YC-CY(BR,BL)
XN = XC
NC = 1
IOC = 4
IF (IC.NE.3) GO TO 10
ICASE = IOC
XN = XO
YN = YO
RETURN
10 IF (IOOP.NE.GOOP) GO TO 20
IF (IC.NE.2) GO TO 30
20 ICASE = NC
RETURN
C
C CASE 1B CONTOR UPPER LEFT
C
30 XN = XC-STPSZ
YN = YC-STPSZ+CY(TL,TR)
XO = XC-STPSZ+CX(TL,BL)
YO = YC-STPSZ
IOC = 2
NC = 3
GO TO 180
C
C CONTOURS FROM ABOVE AND UPPER LEFT
C
40 IF (TL.LT.CONV) GO TO 50
C
C CASE 1C CONTOUR LOWER LEFT
C
XO = XC-STPSZ+CX(TL,BL)
YO = YC-STPSZ
YN = YC-CY(BR,BL)
XN = XC
NC = 1
IOC = 2
GO TO 180
C
C CASE 1D CONTOUR FROM ABOVE
C
50 XO = XC-STPSZ
YO = YC-CY(TR,TL)
YN = YC-CY(BR,BL)
XN = XC
NC = 1
IOC = 3
GO TO 180
C
C
C TEST FOR HORIZONTAL CONTOUR BREAK
C
60 IF (TR.LT.CONV) GO TO 70
IF (TL.GE.CONV) GO TO 200
C
C CASE 2A CONTOUR UPPER LEFT
C
XO = XC-STPSZ
YO = YC-CY(TR,TL)
XN = XC-CX(BL,TL)
YN = YC-STPSZ
NC = 2
IOC = 3
GO TO 180
C
70 IF (TL.LT.CONV) GO TO 80
C
C CASE 2B CONTOUR FROM UPPER RIGHT
C
XO = XC-STPSZ
YO = YC-STPSZ+CY(TL,TR)
XN = XC-CX(BR,TR)
YN = YC
NC = 4
IOC = 3
GO TO 180
C
C CASE 2C CONTOUR FROM LEFT TO RIGHT
C
80 XO = XC-CX(BL,TL)
YO = YC-STPSZ
XN = XC-CX(BR,TR)
YN = YC
NC = 4
IOC = 2
GO TO 180
C
C
C CURRENT BR VALUE LESS THAN CONTOUR
C
C
90 IF (BL.LT.CONV) GO TO 150
C
C VERTICAL CONTOUR BREAK
C
C CASE 3 CURRENT SPACE LESS THAN CONTOUR LEVEL AND LEFT
C NEIGHBOR GE CONTOUR LEVEL
C
IF (TL.GE.CONV) GO TO 130
C
C CASE 3A CONTOUR LOWER LEFT
C
XO = XC-CX(BL,TL)
YO = YC-STPSZ
YN = YC-STPSZ+CY(BL,BR)
XN = XC
NC = 1
IOC = 2
IF (IC.NE.3) GO TO 100
ICASE = IOC
XN = XO
YN = YO
RETURN
100 IF (IOOP.NE.GOOP) GO TO 110
IF (IC.NE.4) GO TO 120
110 ICASE = NC
RETURN
C
C CASE 3B CONTOUR UPPERRIGHT
C
120 XO = XC-STPSZ
YO = YC-CY(TR,TL)
XN = XC-STPSZ+CX(TR,BR)
YN = YC
NC = 4
IOC = 3
GO TO 180
C
130 IF (TR.GE.CONV) GO TO 140
C
C CASE 3C CONTOUR FROM ABOVE
C
XO = XC-STPSZ
YO = YC-STPSZ+CY(TL,TR)
YN = YC-STPSZ+CY(BL,BR)
XN = XC
NC = 1
IOC = 3
GO TO 180
C
C CASE 3D CONTOUR LOWER RIGHT
C
140 XO = XC-STPSZ+CX(TR,BR)
YO = YC
YN = YC-STPSZ+CY(BL,BR)
XN = XC
NC = 1
IOC = 4
GO TO 180
C
C
C
C TEST FOR HORIZONTAL BREAK POINT
C
150 IF (TR.GE.CONV) GO TO 160
C
IF (TL.LT.CONV) GO TO 200
C
C CASE 4A CONTOUR UPPER LEFT
C
XN = XC-STPSZ+CX(TL,BL)
YN = YC-STPSZ
XO = XC-STPSZ
YO = YC-STPSZ+CY(TL,TR)
NC = 2
IOC = 3
GO TO 180
C
160 IF (TL.GE.CONV) GO TO 170
C
C CASE 4B CONTOUR UPPER RIGHT
C
XO = XC-STPSZ
YO = YC-CY(TR,TL)
XN = XC-STPSZ+CX(TR,BR)
YN = YC
NC = 4
IOC = 3
GO TO 180
C
C CASE 4C CONTOUR FROM LEFT TO RIGHT
C
170 YO = YC-STPSZ
XO = XC-STPSZ+CX(TL,BL)
XN = XC-STPSZ+CX(TR,BR)
YN = YC
NC = 4
IOC = 2
C
C DRAW THE CONTOUR LINES NOT ALREADY TAKEN CARE OF
C
180 IF (IABS(IC-NC).NE.2) GO TO 190
ICASE = IOC
XN = XO
YN = YO
RETURN
190 ICASE = NC
200 RETURN
END
|
