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1 | C ACH JA, DAS AUCH |
2 | C |
3 | C |
4 | INTEGER X,Y |
5 | C |
6 | C |
7 | 1000 CALL PL$RST |
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8 | C |
9 | CALL GITTER |
10 | C |
11 | CALL PL$MV(0,0) |
12 | CALL DOWN |
13 | DO 3000 X=0,600 |
14 | XR=X |
15 | PHI=(3.141/180.0)*XR |
16 | Y=SIN(PHI)*90.0 |
17 | CALL DODOT(X,Y) |
18 | 3000 CONTINUE |
19 | CALL UP |
20 | C |
21 | CALL PL$MV(0,0) |
22 | DO 4001 X=0,600 |
23 | XR=X |
24 | PHI=(3.141/180.0)*XR |
25 | Y=COS(PHI)*55.0+SIN(PHI*12.0)*40.0 |
26 | CALL DODOT(X,Y) |
27 | 4001 CONTINUE |
28 | CALL UP |
29 | C |
30 | C |
31 | CALL PL$MV(0,0) |
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32 | C CALL REBOOT |
33 | CALL PL$MV (0,-250) |
34 | PAUSE 7 |
35 | GO TO 1000 |
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36 | END |
37 | C |
38 | C |
39 | C |
40 | SUBROUTINE DODOT(X,Y) |
41 | INTEGER X,Y |
42 | IF (Y.LE.100) GO TO 444 |
43 | CALL UP |
44 | GO TO 3001 |
45 | 444 IF (Y.GE.-100) GO TO 555 |
46 | CALL UP |
47 | GO TO 3001 |
48 | 555 CALL PL$MV(X,Y) |
49 | CALL DOWN |
50 | 3001 RETURN |
51 | END |
52 | C |
53 | CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
54 | C |
55 | SUBROUTINE GITTER |
56 | INTEGER X,Y |
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57 | DO 2000 X=0,600,50 |
58 | CALL LINE(X,-100,X,100) |
59 | 2000 CONTINUE |
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60 | 1500 DO 1600 Y=0,200,50 |
61 | CALL LINE(0,Y-100,600,Y-100) |
62 | 1600 CONTINUE |
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63 | 1300 DO 1400 Y=0,150,50 |
64 | DO 222 X=0,580,20 |
65 | CALL LINE(X,Y-75,X+10,Y-75) |
66 | 222 CONTINUE |
67 | 1400 CONTINUE |
68 | C |
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69 | CALL LINE (0,1,600,1) |
70 | CALL LINE (0,-1,600,-1) |
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71 | CALL LINE (-1,-100,-1,100) |
72 | CALL LINE (1,-100,1,100) |
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73 | C |
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74 | RETURN |
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75 | END |
76 | C |
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77 | C |
78 | SUBROUTINE LINE(X1,Y1,X2,Y2) |
79 | INTEGER X1,Y1,X2,Y2 |
80 | CALL PL$MV(X1,Y1) |
81 | CALL PL$PD |
82 | CALL PL$MV(X2,Y2) |
83 | CALL PL$PU |
84 | RETURN |
85 | END |
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86 | CCCCCCCCCC |
87 | C |
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88 | SUBROUTINE DOWN |
89 | INTEGER PEN,PENX |
90 | COMMON /PENSTA/PEN,PENX |
91 | IF (PEN.EQ.0) CALL PL$PD |
92 | PEN=1 |
93 | PENX=PENX+1 |
94 | RETURN |
95 | END |
96 | C |
97 | SUBROUTINE UP |
98 | INTEGER PEN,PENX |
99 | COMMON /PENSTA/PEN,PENX |
100 | IF (PEN.EQ.1) CALL PL$PU |
101 | PEN=0 |
102 | PENX=PENX+1 |
103 | RETURN |
104 | END |
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105 | CCCCCCCCCC |
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106 | $0 |
107 | |
108 | |