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C
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
SUBROUTINE AGBACK
C
C The subroutine AGBACK is used to draw a graph background, as directed
C by the current contents of the parameter list.
C
C The following common block contains the AUTOGRAPH control parameters,
C all of which are real. If it is changed, all of AUTOGRAPH (especially
C the routine AGSCAN) must be examined for possible side effects.
C
COMMON /AGCONP/ QFRA,QSET,QROW,QIXY,QWND,QBAC , SVAL(2) ,
+ XLGF,XRGF,YBGF,YTGF , XLGD,XRGD,YBGD,YTGD , SOGD ,
+ XMIN,XMAX,QLUX,QOVX,QCEX,XLOW,XHGH ,
+ YMIN,YMAX,QLUY,QOVY,QCEY,YLOW,YHGH ,
+ QDAX(4),QSPA(4),PING(4),PINU(4),FUNS(4),QBTD(4),
+ BASD(4),QMJD(4),QJDP(4),WMJL(4),WMJR(4),QMND(4),
+ QNDP(4),WMNL(4),WMNR(4),QLTD(4),QLED(4),QLFD(4),
+ QLOF(4),QLOS(4),DNLA(4),WCLM(4),WCLE(4) ,
+ QODP,QCDP,WOCD,WODQ,QDSH(26) ,
+ QDLB,QBIM,FLLB(10,8),QBAN ,
+ QLLN,TCLN,QNIM,FLLN(6,16),QNAN ,
+ XLGW,XRGW,YBGW,YTGW , XLUW,XRUW,YBUW,YTUW ,
+ XLCW,XRCW,YBCW,YTCW , WCWP,HCWP,SCWP ,
+ XBGA(4),YBGA(4),UBGA(4),XNDA(4),YNDA(4),UNDA(4),
+ QBTP(4),BASE(4),QMNT(4),QLTP(4),QLEX(4),QLFL(4),
+ QCIM(4),QCIE(4),RFNL(4),WNLL(4),WNLR(4),WNLB(4),
+ WNLE(4),QLUA(4) ,
+ RBOX(6),DBOX(6,4),SBOX(6,4)
C
C The following common block contains other AUTOGRAPH variables, both
C real and integer, which are not control parameters.
C
COMMON /AGORIP/ SMRL , ISLD , MWCL,MWCM,MWCE,MDLA,MWCD,MWDQ ,
+ INIF
C
C Declare the block data routine external to force it to load.
C
C +NOAO - Block data replaced with run time initialization subroutine.
C
C EXTERNAL AGDFLT
call agdflt
C
C -NOAO
C
C Do an appropriate SET call for the following routines. The call is
C equivalent to "CALL SET (XLCW,XRCW,YBCW,YTCW,0.,1.,0.,1.,1)", but
C makes the viewport cover the whole plotter frame, which avoids the
C problems resulting from clipping by GKS.
C
CALL SET (0.,1.,0.,1.,-XLCW/(XRCW-XLCW),(1.-XLCW)/(XRCW-XLCW),
+ -YBCW/(YTCW-YBCW),(1.-YBCW)/(YTCW-YBCW),1)
C
C Draw the labels, if any, first.
C
IDLB=IFIX(QDLB)
IF (IDLB.EQ.0) GO TO 101
C
LBIM=IFIX(QBIM)
CALL AGLBLS (IDLB,WCWP,HCWP,FLLB,LBIM,FLLN,DBOX,SBOX,RBOX)
C
C Now draw each of the four axes.
C
101 I=0
C
102 I=I+1
C
IF (I.EQ.5) GO TO 108
C
IF (QDAX(I).EQ.0.) GO TO 102
C
GO TO (103,104,105,106) , I
C
C Y axis - left.
C
103 WNLB(1)=0.-YBGW
IF (XBGA(1)-WNLL(1).LT.DBOX(3,2).AND.
+ XBGA(1)+WNLR(1).GT.DBOX(3,1)) WNLB(1)=0.-DBOX(3,4)
C
WNLE(1)=YTGW-1.
IF (XBGA(1)-WNLL(1).LT.DBOX(4,2).AND.
+ XBGA(1)+WNLR(1).GT.DBOX(4,1)) WNLE(1)=DBOX(4,3)-1.
C
GO TO 107
C
C Y axis - right.
C
104 WNLB(2)=YTGW-1.
IF (XBGA(2)-WNLR(2).LT.DBOX(4,2).AND.
+ XBGA(2)+WNLL(2).GT.DBOX(4,1)) WNLB(2)=DBOX(4,3)-1.
C
WNLE(2)=0.-YBGW
IF (XBGA(2)-WNLR(2).LT.DBOX(3,2).AND.
+ XBGA(2)+WNLL(2).GT.DBOX(3,1)) WNLE(2)=0.-DBOX(3,4)
C
GO TO 107
C
C X axis - bottom.
C
105 WNLB(3)=XRGW-1.
IF (YBGA(3)-WNLL(3).LT.DBOX(2,4).AND.
+ YBGA(3)+WNLR(3).GT.DBOX(2,3)) WNLB(3)=DBOX(2,1)-1.
C
WNLE(3)=0.-XLGW
IF (YBGA(3)-WNLL(3).LT.DBOX(1,4).AND.
+ YBGA(3)+WNLR(3).GT.DBOX(1,3)) WNLE(3)=0.-DBOX(1,2)
C
GO TO 107
C
C X axis - top.
C
106 WNLB(4)=0.-XLGW
IF (YBGA(4)-WNLR(4).LT.DBOX(1,4).AND.
+ YBGA(4)+WNLL(4).GT.DBOX(1,3)) WNLB(4)=0.-DBOX(1,2)
C
WNLE(4)=XRGW-1.
IF (YBGA(4)-WNLR(4).LT.DBOX(2,4).AND.
+ YBGA(4)+WNLL(4).GT.DBOX(2,3)) WNLE(4)=DBOX(2,1)-1.
C
107 Q=AMIN1(0.,QDAX(I))
C
CALL AGAXIS (I,Q,
+ QSPA(I),WCWP,HCWP,XBGA(I),YBGA(I),XNDA(I),YNDA(I),
+ QLUA(I),UBGA(I),UNDA(I),FUNS(I),QBTP(I),BASE(I),
+ QJDP(I),WMJL(I),WMJR(I),QMNT(I),QNDP(I),WMNL(I),
+ WMNR(I),QLTP(I),QLEX(I),QLFL(I),QLOF(I),QLOS(I),
+ DNLA(I),WCLM(I),WCLE(I),RFNL(I),QCIM(I),QCIE(I),
+ WNLL(I),WNLR(I),WNLB(I),WNLE(I))
C
GO TO 102
C
C Do set call for user and return.
C
108 CALL SET (XLCW,XRCW,YBCW,YTCW,XLUW,XRUW,YBUW,YTUW,
+ 1+IABS(IFIX(QLUX))*2+IABS(IFIX(QLUY)))
C
RETURN
C
END
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