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- 100 REM === Setup graphics and initialize some constants
- 105 REM === For Amiga BASIC
- 110 CLS
- 120 PI = 3.141593
- 130 SW = 500:SH = 180:SC = SW / 1750:XF = SW / 2
- 140 IF SH / 1000 < SC THEN SC = SH / 1000
- 150 REM === Read the vector graphics from DATA and draw the picture
- 160 READ P$
- 170 IF P$ = "EOI" THEN END
- 180 IF P$ = "C" OR P$ = "E" THEN GOSUB 1010
- 190 IF P$ = "L" THEN GOSUB 1510
- 200 GOTO 160
- 1000 REM === Draw circle or ellipse
- 1010 READ XC,YC,XR:YR = XR: IF P$ = "E" THEN READ YR
- 1015 REM == Original var was AS which is a reserved token/var
- 1020 READ SA,EA
- 1030 XC=INT(XC*SC):YC=INT(YC*SC):XR=INT(XR*SC):YR=INT(YR*SC)
- 1040 A2 = XR * XR:B2 = YR * YR:F2 = 4 * A2
- 1050 X = 0:Y = YR:SI = 2 * B2 + A2 * (1 - 2 * YR)
- 1060 IF B2 * X > A2 * Y THEN GOTO 1110
- 1070 SP = X / Y:AN = ATN (SP):DG = 90 - AN * 180 / PI: GOSUB 1190
- 1080 IF SI >= 0 THEN SI = SI + F2 * (1 - Y):Y = Y - 1
- 1090 SI = SI + B2 * (4 * X + 6)
- 1100 X = X + 1: GOTO 1060
- 1110 F2 = 4 * B2
- 1120 X = XR:Y = 0:SI = 2 * A2 + B2 * (1 - 2 * XR)
- 1130 IF A2 * Y > B2 * X THEN RETURN
- 1140 SP = Y / X:AN = ATN (SP):DG = AN * 180 / PI: GOSUB 1190
- 1150 IF SI >= 0 THEN SI = SI + F2 * (1 - X):X = X - 1
- 1160 SI = SI + A2 * (4 * Y + 6)
- 1170 Y = Y + 1: GOTO 1130
- 1180 REM === Plot point on arc
- 1190 NS = SA:NE = EA: IF SA < 0 THEN NS = SA + 360:NE = EA + 360
- 1200 IF DG >= SA AND DG <= EA THEN LINE(XC + X + XF,YC - Y) - (XC + X + XF,YC - Y)
- 1210 IF 180 - DG >= SA AND 180 - DG <= EA THEN LINE(XC - X + XF,YC - Y) - (XC - X + XF,YC - Y)
- 1220 IF DG >= NS - 180 AND DG <= NE - 180 THEN LINE(XC - X + XF,YC + Y) - (XC - X + XF,YC + Y)
- 1230 IF 180 - DG >= NS - 180 AND 180 - DG <= NE - 180 THEN LINE(C + X + XF,YC + Y) - (C + X + XF,YC + Y)
- 1240 RETURN
- 1500 REM === Draw a line
- 1510 READ X1,Y1,X2,Y2
- 1520 X1 = X1 * SC:Y1 = Y1 * SC:X2 = X2 * SC:Y2 = Y2 * SC
- 1530 LINE(X1+XF,Y1) - (X2+XF,Y2)
- 1540 RETURN
- 5000 REM === This is the image data
- 5010 DATA L,-350,24,-45,0
- 5020 DATA L,-450,24,-89,38
- 5030 DATA L,-55,77,-88,499
- 5040 DATA L,-129,533,-365,514
- 5050 DATA L,-365,517,-88,560
- 5060 DATA L,-11,35,-48,528
- 5070 DATA L,23,30,-18,529
- 5080 DATA L,56,99,-18,530
- 5090 DATA L,124,111,56,99
- 5100 DATA L,38,24,124,111
- 5110 DATA L,-64,807,101,679
- 5120 DATA L,-140,983,101,679
- 5130 DATA L,-858,786,-185,998
- 5140 DATA L,-864,752,-197,911
- 5150 DATA L,-62,687,-158,892
- 5160 DATA L,-226,836,-138,667
- 5170 DATA L,-689,586,-150,645
- 5180 DATA L,-340,640,-689,586
- 5190 DATA L,-724,633,-354,685
- 5200 DATA L,-360,701,-724,633
- 5210 DATA L,-774,676,-375,747
- 5220 DATA L,-380,765,-774,676
- 5230 DATA L,-239,796,-328,776
- 5240 DATA L,-320,757,-230,773
- 5250 DATA L,-214,729,-295,713
- 5260 DATA L,-286,695,-206,706
- 5270 DATA L,-190,663,-263,652
- 5280 DATA L,-365,788,-367,801
- 5290 DATA L,-367,801,-359,789
- 5300 DATA L,-225,827,-226,836
- 5310 DATA L,-62,687,-64,807
- 5320 DATA C,-41,31,31,-7,94
- 5330 DATA C,-90,73,36,-6,87
- 5340 DATA C,-126,496,38,266,354
- 5350 DATA C,-82,526,34,261,356
- 5360 DATA C,32,30,9,44,175
- 5370 DATA C,-261,553,461,78,93
- 5380 DATA C,-177,151,50,6,78
- 5390 DATA C,-811,219,688,-19,6
- 5400 DATA C,-205,420,50,269,341
- 5410 DATA C,-190,-999,1469,259,269
- 5420 DATA C,-264,-1083,1539,262,271
- 5430 DATA C,-212,414,41,271,339
- 5440 DATA C,-710,226,573,-21,8
- 5450 DATA C,-184,148,41,8,78
- 5460 DATA C,-331,859,768,78,86
- 5470 DATA C,-49,293,495,163,188
- 5480 DATA C,-256,278,295,154,196
- 5490 DATA C,-191,874,38,261,331
- 5500 DATA C,-865,759,7,80,183
- 5510 DATA C,-849,764,24,170,246
- 5520 DATA C,-175,952,47,257,318
- 5530 DATA C,-150,659,15,-41,89
- 5540 DATA C,-342,659,19,-25,81
- 5550 DATA C,-351,657,28,263,342
- 5560 DATA C,-363,721,20,-26,78
- 5570 DATA C,-371,721,26,260,342
- 5580 DATA C,-384,784,20,-12,78
- 5590 DATA C,-267,686,34,84,155
- 5600 DATA C,-285,680,15,147,267
- 5610 DATA C,-199,683,24,254,341
- 5620 DATA C,-198,683,22,-19,68
- 5630 DATA C,-217,747,18,-16,80
- 5640 DATA C,-300,746,33,82,163
- 5650 DATA C,-317,742,15,159,255
- 5660 DATA C,-226,746,28,261,347
- 5670 DATA C,-333,807,31,80,147
- 5680 DATA C,-256,824,31,-6,77
- 5690 DATA C,772,75,53,0,360
- 5700 DATA L,718,64,584,32
- 5710 DATA L,584,32,535,188
- 5720 DATA E,531,390,302,197,0,360
- 5730 DATA C,260,298,67,40,246
- 5740 DATA C,806,298,67,-69,141
- 5750 DATA C,426,351,49,0,360
- 5760 DATA C,639,351,49,0,360
- 5770 DATA E,533,458,115,54,200,340
- 5780 DATA E,531,673,151,313,142,263
- 5790 DATA E,531,673,151,313,-82,37
- 5800 DATA E,419,708,109,132,104,263
- 5810 DATA E,644,708,109,132,-83,76
- 5820 DATA E,400,961,75,61,62,192
- 5830 DATA E,663,961,75,61,-11,118
- 5840 DATA L,327,976,736,976
- 5850 DATA EOI
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