Sierpinski arrowhead curve: Difference between revisions
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Alextretyak (talk | contribs) m (→{{header|11l}}) |
(Added XPL0 example.) |
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} |
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}</lang> |
}</lang> |
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=={{header|XPL0}}== |
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<lang XPL0>int PosX, PosY; |
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real Dir; |
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proc Curve(Order, Length, Angle); |
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int Order; real Length, Angle; |
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[if Order = 0 then |
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[PosX:= PosX + fix(Length*Cos(Dir)); |
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PosY:= PosY - fix(Length*Sin(Dir)); |
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Line(PosX, PosY, $E \yellow\); |
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] |
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else [Curve(Order-1, Length/2.0, -Angle); |
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Dir:= Dir + Angle; |
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Curve(Order-1, Length/2.0, +Angle); |
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Dir:= Dir + Angle; |
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Curve(Order-1, Length/2.0, -Angle); |
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]; |
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]; |
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def Order=5, Length=300.0, Pi=3.141592654, Sixty=Pi/3.0; |
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[SetVid($12); \VGA graphics: 640x480x8 |
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PosX:= 640/4; PosY:= 3*480/4; |
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Move(PosX, PosY); |
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Dir:= 0.0; |
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if (Order&1) = 0 then |
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Curve(Order, Length, +Sixty) |
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else [Dir:= Dir + Sixty; |
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Curve(Order, Length, -Sixty); |
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]; |
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]</lang> |
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{{out}} |
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<pre> |
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http://www.xpl0.org/rcarrow.gif |
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</pre> |
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=={{header|zkl}}== |
=={{header|zkl}}== |
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