Chaos game: Difference between revisions
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(Added Fōrmulæ solution) |
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Implements five of the fractals on the wikipedia page. |
Implements five of the fractals on the wikipedia page. |
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{{libheader|Phix/pGUI}} |
{{libheader|Phix/pGUI}} |
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{{libheader|Phix/online}} |
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<lang Phix>-- demo\rosetta\Chaos_game.exw |
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You can run this online [http://phix.x10.mx/p2js/chaos.htm here]. Press space to cycle through the five fractals. |
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include pGUI.e |
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<!--<lang Phix>(phixonline)--> |
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<span style="color: #000080;font-style:italic;">-- |
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Ihandle dlg, canvas |
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-- demo\rosetta\Chaos_game.exw |
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cdCanvas cddbuffer, cdcanvas |
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-- =========================== |
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--</span> |
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enum TRI,SQ1,SQ2,SQ3,PENT |
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span> |
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<span style="color: #008080;">include</span> <span style="color: #000000;">pGUI</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span> |
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sequence descs = {"Sierpinsky Triangle", |
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"Square 1", |
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<span style="color: #004080;">Ihandle</span> <span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">canvas</span> |
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"Square 2", |
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<span style="color: #004080;">cdCanvas</span> <span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cdcanvas</span> |
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"Square 3", |
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"Pentagon"} |
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<span style="color: #008080;">enum</span> <span style="color: #000000;">TRI</span><span style="color: #0000FF;">,</span><span style="color: #000000;">SQ1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">SQ2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">SQ3</span><span style="color: #0000FF;">,</span><span style="color: #000000;">PENT</span> |
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integer mode = TRI |
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<span style="color: #004080;">sequence</span> <span style="color: #000000;">descs</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"Sierpinsky Triangle"</span><span style="color: #0000FF;">,</span> |
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<span style="color: #008000;">"Square 1"</span><span style="color: #0000FF;">,</span> |
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function redraw_cb(Ihandle /*ih*/, integer /*posx*/, integer /*posy*/) |
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<span style="color: #008000;">"Square 2"</span><span style="color: #0000FF;">,</span> |
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atom {w,h} = IupGetIntInt(canvas, "DRAWSIZE") |
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<span style="color: #008000;">"Square 3"</span><span style="color: #0000FF;">,</span> |
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atom {x,y} = {w*0.05,h*0.05} |
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<span style="color: #008000;">"Pentagon"</span><span style="color: #0000FF;">}</span> |
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{w,h} = {w*0.9,h*0.9} |
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sequence points = iff(mode<SQ1?{{x,y},{x+w/2,y+h},{x+w,y}}: |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">mode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">TRI</span> |
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iff(mode<PENT?{{x,y},{x,y+h},{x+w,y+h},{x+w,y}} |
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:{{x+w/6,y},{x,y+h*2/3},{x+w/2,y+h},{x+w,y+h*2/3},{x+w*5/6,y}})) |
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<span style="color: #008080;">function</span> <span style="color: #000000;">redraw_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000080;font-style:italic;">/*ih*/</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000080;font-style:italic;">/*posx*/</span><span style="color: #0000FF;">,</span> <span style="color: #000080;font-style:italic;">/*posy*/</span><span style="color: #0000FF;">)</span> |
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cdCanvasActivate(cddbuffer) |
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<span style="color: #004080;">atom</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">h</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupGetIntInt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"DRAWSIZE"</span><span style="color: #0000FF;">)</span> |
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integer last = 0 |
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<span style="color: #004080;">atom</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">w</span><span style="color: #0000FF;">*</span><span style="color: #000000;">0.05</span><span style="color: #0000FF;">,</span><span style="color: #000000;">h</span><span style="color: #0000FF;">*</span><span style="color: #000000;">0.05</span><span style="color: #0000FF;">}</span> |
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for i=1 to 1000 do |
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<span style="color: #0000FF;">{</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">h</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">w</span><span style="color: #0000FF;">*</span><span style="color: #000000;">0.9</span><span style="color: #0000FF;">,</span><span style="color: #000000;">h</span><span style="color: #0000FF;">*</span><span style="color: #000000;">0.9</span><span style="color: #0000FF;">}</span> |
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integer r = rand(length(points)) |
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<span style="color: #004080;">sequence</span> <span style="color: #000000;">points</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">mode</span><span style="color: #0000FF;"><</span><span style="color: #000000;">SQ1</span><span style="color: #0000FF;">?{{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">h</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">}}:</span> |
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if mode=TRI or r!=last then |
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<span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">mode</span><span style="color: #0000FF;"><</span><span style="color: #000000;">PENT</span><span style="color: #0000FF;">?{{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">h</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">h</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">}}</span> |
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atom {nx,ny} = points[r] |
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<span style="color: #0000FF;">:{{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">/</span><span style="color: #000000;">6</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">h</span><span style="color: #0000FF;">*</span><span style="color: #000000;">2</span><span style="color: #0000FF;">/</span><span style="color: #000000;">3</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">h</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">h</span><span style="color: #0000FF;">*</span><span style="color: #000000;">2</span><span style="color: #0000FF;">/</span><span style="color: #000000;">3</span><span style="color: #0000FF;">},{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">w</span><span style="color: #0000FF;">*</span><span style="color: #000000;">5</span><span style="color: #0000FF;">/</span><span style="color: #000000;">6</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">}}))</span> |
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{x,y} = {(x+nx)/2,(y+ny)/2} |
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<span style="color: #7060A8;">cdCanvasActivate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span> |
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cdCanvasPixel(cddbuffer, x, y, CD_GREY) |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">last</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span> |
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if mode=SQ2 |
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<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">1000</span> <span style="color: #008080;">do</span> |
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or mode=SQ3 then |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">r</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">rand</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">points</span><span style="color: #0000FF;">))</span> |
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r = mod(r,length(points))+1 |
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<span style="color: #008080;">if</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">=</span><span style="color: #000000;">TRI</span> <span style="color: #008080;">or</span> <span style="color: #000000;">r</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">last</span> <span style="color: #008080;">then</span> |
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if mode=SQ3 then |
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<span style="color: #004080;">atom</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">nx</span><span style="color: #0000FF;">,</span><span style="color: #000000;">ny</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">points</span><span style="color: #0000FF;">[</span><span style="color: #000000;">r</span><span style="color: #0000FF;">]</span> |
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r = mod(r,length(points))+1 |
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<span style="color: #0000FF;">{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{(</span><span style="color: #000000;">x</span><span style="color: #0000FF;">+</span><span style="color: #000000;">nx</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">ny</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">}</span> |
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end if |
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<span style="color: #7060A8;">cdCanvasPixel</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">CD_GREY</span><span style="color: #0000FF;">)</span> |
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end if |
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<span style="color: #008080;">if</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">=</span><span style="color: #000000;">SQ2</span> |
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last = r |
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<span style="color: #008080;">or</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">=</span><span style="color: #000000;">SQ3</span> <span style="color: #008080;">then</span> |
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end if |
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<span style="color: #000000;">r</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">mod</span><span style="color: #0000FF;">(</span><span style="color: #000000;">r</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">points</span><span style="color: #0000FF;">))+</span><span style="color: #000000;">1</span> |
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end for |
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<span style="color: #008080;">if</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">=</span><span style="color: #000000;">SQ3</span> <span style="color: #008080;">then</span> |
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cdCanvasFlush(cddbuffer) |
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<span style="color: #000000;">r</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">mod</span><span style="color: #0000FF;">(</span><span style="color: #000000;">r</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">points</span><span style="color: #0000FF;">))+</span><span style="color: #000000;">1</span> |
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IupSetStrAttribute(dlg, "TITLE", "Chaos Game (%s)", {descs[mode]}) |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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return IUP_DEFAULT |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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end function |
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<span style="color: #000000;">last</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">r</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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function timer_cb(Ihandle /*ih*/) |
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span> |
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IupUpdate(canvas) |
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<span style="color: #7060A8;">cdCanvasFlush</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span> |
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return IUP_IGNORE |
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<span style="color: #7060A8;">IupSetStrAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"TITLE"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Chaos Game (%s)"</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">descs</span><span style="color: #0000FF;">[</span><span style="color: #000000;">mode</span><span style="color: #0000FF;">]})</span> |
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end function |
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<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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function map_cb(Ihandle ih) |
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cdcanvas = cdCreateCanvas(CD_IUP, ih) |
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<span style="color: #008080;">function</span> <span style="color: #000000;">timer_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000080;font-style:italic;">/*ih*/</span><span style="color: #0000FF;">)</span> |
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cddbuffer = cdCreateCanvas(CD_DBUFFER, cdcanvas) |
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<span style="color: #7060A8;">IupUpdate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">)</span> |
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cdCanvasSetBackground(cddbuffer, CD_WHITE) |
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<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_IGNORE</span> |
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cdCanvasSetForeground(cddbuffer, CD_GRAY) |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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return IUP_DEFAULT |
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end function |
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<span style="color: #008080;">function</span> <span style="color: #000000;">map_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000000;">ih</span><span style="color: #0000FF;">)</span> |
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<span style="color: #000000;">cdcanvas</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">cdCreateCanvas</span><span style="color: #0000FF;">(</span><span style="color: #004600;">CD_IUP</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">ih</span><span style="color: #0000FF;">)</span> |
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function esc_close(Ihandle /*ih*/, atom c) |
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<span style="color: #000000;">cddbuffer</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">cdCreateCanvas</span><span style="color: #0000FF;">(</span><span style="color: #004600;">CD_DBUFFER</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cdcanvas</span><span style="color: #0000FF;">)</span> |
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if c=K_ESC then return IUP_CLOSE end if |
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<span style="color: #7060A8;">cdCanvasSetBackground</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">CD_WHITE</span><span style="color: #0000FF;">)</span> |
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if c=' ' then |
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<span style="color: #7060A8;">cdCanvasSetForeground</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">CD_GRAY</span><span style="color: #0000FF;">)</span> |
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mode += 1 |
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<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span> |
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if mode>PENT then |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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mode = TRI |
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end if |
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<span style="color: #008080;">function</span> <span style="color: #000000;">key_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000080;font-style:italic;">/*ih*/</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">)</span> |
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cdCanvasClear(cddbuffer) |
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<span style="color: #008080;">if</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">=</span><span style="color: #004600;">K_ESC</span> <span style="color: #008080;">then</span> <span style="color: #008080;">return</span> <span style="color: #004600;">IUP_CLOSE</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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IupRedraw(canvas) |
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<span style="color: #008080;">if</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">=</span><span style="color: #008000;">' '</span> <span style="color: #008080;">then</span> |
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end if |
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<span style="color: #000000;">mode</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">1</span> |
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return IUP_CONTINUE |
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<span style="color: #008080;">if</span> <span style="color: #000000;">mode</span><span style="color: #0000FF;">></span><span style="color: #000000;">PENT</span> <span style="color: #008080;">then</span> |
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end function |
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<span style="color: #000000;">mode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">TRI</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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procedure main() |
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<span style="color: #7060A8;">cdCanvasClear</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span> |
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IupOpen() |
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<span style="color: #7060A8;">IupRedraw</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">)</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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canvas = IupCanvas(NULL) |
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<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_CONTINUE</span> |
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IupSetAttribute(canvas, "RASTERSIZE", "640x640") |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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IupSetCallback(canvas, "MAP_CB", Icallback("map_cb")) |
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IupSetCallback(canvas, "ACTION", Icallback("redraw_cb")) |
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<span style="color: #008080;">procedure</span> <span style="color: #000000;">main</span><span style="color: #0000FF;">()</span> |
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<span style="color: #7060A8;">IupOpen</span><span style="color: #0000FF;">()</span> |
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dlg = IupDialog(canvas) |
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IupSetAttribute(dlg, "TITLE", "Chaos Game") |
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<span style="color: #000000;">canvas</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupCanvas</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"RASTERSIZE=640x640"</span><span style="color: #0000FF;">)</span> |
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IupSetCallback(dlg, "K_ANY", Icallback("esc_close")) |
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<span style="color: #7060A8;">IupSetCallbacks</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"MAP_CB"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"map_cb"</span><span style="color: #0000FF;">),</span> |
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<span style="color: #008000;">"ACTION"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"redraw_cb"</span><span style="color: #0000FF;">)})</span> |
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IupShow(dlg) |
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<span style="color: #000000;">dlg</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupDialog</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">`TITLE="Chaos Game"`</span><span style="color: #0000FF;">)</span> |
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IupSetAttribute(canvas, "RASTERSIZE", NULL) |
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<span style="color: #7060A8;">IupSetCallback</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"KEY_CB"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"key_cb"</span><span style="color: #0000FF;">))</span> |
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Ihandle timer = IupTimer(Icallback("timer_cb"), 40) |
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IupMainLoop() |
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<span style="color: #7060A8;">IupShow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">)</span> |
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IupClose() |
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<span style="color: #7060A8;">IupSetAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"RASTERSIZE"</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">NULL</span><span style="color: #0000FF;">)</span> |
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end procedure |
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<span style="color: #004080;">Ihandle</span> <span style="color: #000000;">timer</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupTimer</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"timer_cb"</span><span style="color: #0000FF;">),</span> <span style="color: #000000;">40</span><span style="color: #0000FF;">)</span> |
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<span style="color: #008080;">if</span> <span style="color: #7060A8;">platform</span><span style="color: #0000FF;">()!=</span><span style="color: #004600;">JS</span> <span style="color: #008080;">then</span> |
|||
main()</lang> |
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<span style="color: #7060A8;">IupMainLoop</span><span style="color: #0000FF;">()</span> |
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<span style="color: #7060A8;">IupClose</span><span style="color: #0000FF;">()</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span> |
|||
<span style="color: #000000;">main</span><span style="color: #0000FF;">()</span> |
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<!--</lang>--> |
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=={{header|Plain English}}== |
=={{header|Plain English}}== |