Trailing-Edge
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PDP-10 Archives
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decuslib20-05
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decus/20-0152/test6.for
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PROGRAM TEST6
DIMENSION X(512),Y(512),IBUF(30)
DO 10 I=1,512
X(I)=ALOG10(FLOAT(I))
R=(6.2832)*FLOAT(I)/200.
Y(I)=SIN(R)
10 CONTINUE
CALL VTCLR
CALL GRAPHS(IBUF,227+4,X,Y,512,-1.0,0)
C
CALL VTHTXT(8,23,1,' CHANGING SHADE LINE POSITION ')
CALL BOUNDS(1,Y,YMAX,YMIN,512,0,0,0)
DO 30 J=1,3
DO 20 I=1,100
FI=I
SHADE=((FI/100.)*(YMAX-YMIN))+YMIN
CALL GRSHAD(IBUF,SHADE,0)
20 CONTINUE
DO 30 I=1,100
FI=100.-I
SHADE=((FI/100.)*(YMAX-YMIN))+YMIN
CALL GRSHAD(IBUF,SHADE,0)
30 CONTINUE
call vtclr
CALL EXIT
END