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35 lines
2.4 KiB
QBasic
35 lines
2.4 KiB
QBasic
'3d cube
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'polygon filled using paint. ;*)
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'I could probably shorten the code in less than 20 lines but
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'I'd rather make another 25 liner. ;*)
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'Relsoft 2003
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1 IF C& = 0 THEN SCREEN 9, , 1, 0 ELSE DIM CubeM!(8, 7), CubeV(12, 2)
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2 FOR V = 1 TO 8 + 12
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3 IF V < 9 THEN READ CubeM!(V, 0), CubeM!(V, 1), CubeM!(V, 2) ELSE READ CubeV(V - 8, 0), CubeV(V - 8, 1), CubeV(V - 8, 2)
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4 NEXT V
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5 DO
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6 ax! = (ax! + .01) * -(ax! < 6.283186)
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7 ay! = (ay! + .01) * -(ay! < 6.283186)
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8 az! = (az! + .01) * -(az! < 6.283186)
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9 FOR I = 1 TO 8
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10 CubeM!(I, 6) = (256 * ((CubeM!(I, 0) * (COS(ay!) * COS(az!)) + CubeM!(I, 1) * (COS(ax!) * -SIN(az!) + SIN(ax!) * SIN(ay!) * COS(az!)) + CubeM!(I, 2) * (-SIN(ax!) * -SIN(az!) + COS(ax!) * SIN(ay!) * COS(az!)))) \ (256 - ((CubeM!(I, 0) * ( _
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-SIN(ay!)) + CubeM!(I, 1) * (SIN(ax!) * COS(ay!)) + CubeM!(I, 2) * (COS(ax!) * COS(ay!)))))) + 320
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11 CubeM!(I, 7) = -(256 * ((CubeM!(I, 0) * (COS(ay!) * SIN(az!)) + CubeM!(I, 1) * (COS(ax!) * COS(az!) + SIN(ax!) * SIN(ay!) * SIN(az!)) + CubeM!(I, 2) * (-SIN(ax!) * COS(az!) + COS(az!) * SIN(ay!) * SIN(az!)))) \ (256 - ((CubeM!(I, 0) * (- _
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SIN(ay!)) + CubeM!(I, 1) * (SIN(ax!) * COS(ay!)) + CubeM!(I, 2) * (COS(ax!) * COS(ay!)))))) + 175
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12 NEXT I
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13 LINE (0, 0)-(639, 350), 0, BF
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14 FOR I = 1 TO 12
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15 IF (CubeM!(CubeV(I, 2), 6) - CubeM!(CubeV(I, 0), 6)) * (CubeM!(CubeV(I, 1), 7) - CubeM!(CubeV(I, 0), 7)) - (CubeM!(CubeV(I, 1), 6) - CubeM!(CubeV(I, 0), 6)) * (CubeM!(CubeV(I, 2), 7) - CubeM!(CubeV(I, 0), 7)) < -256 THEN
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16 LINE (CubeM!(CubeV(I, 0), 6), CubeM!(CubeV(I, 0), 7))-(CubeM!(CubeV(I, 1), 6), CubeM!(CubeV(I, 1), 7)), I + 2
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17 LINE (CubeM!(CubeV(I, 1), 6), CubeM!(CubeV(I, 1), 7))-(CubeM!(CubeV(I, 2), 6), CubeM!(CubeV(I, 2), 7)), I + 2
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18 LINE (CubeM!(CubeV(I, 2), 6), CubeM!(CubeV(I, 2), 7))-(CubeM!(CubeV(I, 0), 6), CubeM!(CubeV(I, 0), 7)), I + 2
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19 PAINT ((CubeM!(CubeV(I, 0), 6) + CubeM!(CubeV(I, 1), 6) + CubeM!(CubeV(I, 2), 6)) \ 3, (CubeM!(CubeV(I, 0), 7) + CubeM!(CubeV(I, 1), 7) + CubeM!(CubeV(I, 2), 7)) \ 3), I + 2
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20 END IF
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21 NEXT I
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22 PCOPY 1, 0
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23 LOOP UNTIL INKEY$ <> ""
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DATA -80,-80,-80,80,-80,-80,80, 80,-80,-80, 80,-80,-80,-80, 80,80,-80, 80,80, 80, 80, -80, 80, 80
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DATA 5,1,8,1,4,8,6,5,7,5,8,7,2,6,3,6,7,3,1,2,4,2,3,4,4,3,8,3,7,8,5,6,1,6,2,1
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