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Voronoi diagram: Difference between revisions

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Voronoi diagram (view source)

Revision as of 22:57, 19 April 2022

39,728 bytes added ,  2 years ago
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→‎{{header|Phix}}: syntax coloured, added online link
m (→‎{{header|Phix}}: syntax coloured, added online link)
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{{trans|Liberty_BASIC}}
{{libheader|Phix/pGUI}}
{{libheader|Phix/online}}
Lifted the calculation strategy from Liberty Basic.
Lifted the calculation strategy from Liberty Basic. <br>
Can resize, double or halve sites (press +/-), and toggle between Euclid, Manhattan, and Minkowski (press e/m/w).
You can run this online [http://phix.x10.mx/p2js/voronoi.htm here] (it' a bit slow tho).
<lang Phix>--
<!--<lang Phix>(phixonline)-->
-- demo\rosetta\VoronoiDiagram.exw
<span style="color: #000080;font-style:italic;">--
--
-- demo\rosetta\VoronoiDiagram.exw
include pGUI.e
-- ===============================
 
--
Ihandle dlg, canvas, timer
-- Can resize, double or halve the number of sites (press +/-), and toggle
cdCanvas cddbuffer, cdcanvas
-- between Euclid, Manhattan, and Minkowski (press e/m/w).
 
--</span>
-- Stop any current drawing process before starting a new one:
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
-- Without this it /is/ going to crash, if it tries to finish
<span style="color: #008080;">include</span> <span style="color: #000000;">pGUI</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
-- drawing all 100 sites, when there are now only 50, for eg.
integer timer_active = 0
<span style="color: #004080;">Ihandle</span> <span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">timer</span>
 
<span style="color: #004080;">cdCanvas</span> <span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cdcanvas</span>
integer nsites = 200
integer last_width = -1, last_height
<span style="color: #000080;font-style:italic;">-- Stop any current drawing process before starting a new one:
sequence siteX, siteY, siteC
-- Without this it /is/ going to crash, if it tries to finish
 
-- drawing all 100 sites, when there are now only 50, for eg.</span>
enum EUCLID, MANHATTAN, MINKOWSKI
<span style="color: #004080;">integer</span> <span style="color: #000000;">timer_active</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
 
constant dmodes = {"Euclid", "Manhattan", "Minkowski"}
<span style="color: #004080;">integer</span> <span style="color: #000000;">nsites</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">200</span>
 
<span style="color: #004080;">integer</span> <span style="color: #000000;">last_width</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">last_height</span>
integer dmode = EUCLID,
<span style="color: #004080;">sequence</span> <span style="color: #000000;">siteX</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">siteY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">siteC</span>
drawn = 0 -- (last dmode actually shown)
 
<span style="color: #008080;">enum</span> <span style="color: #000000;">EUCLID</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">MANHATTAN</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">MINKOWSKI</span>
function distance(integer x1,y1, x2,y2)
atom d
<span style="color: #008080;">constant</span> <span style="color: #000000;">dmodes</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"Euclid"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Manhattan"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Minkowski"</span><span style="color: #0000FF;">}</span>
x1 -= x2
y1 -= y2
<span style="color: #004080;">integer</span> <span style="color: #000000;">dmode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">EUCLID</span><span style="color: #0000FF;">,</span>
switch dmode do
<span style="color: #000000;">drawn</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span> <span style="color: #000080;font-style:italic;">-- (last dmode actually shown)</span>
case EUCLID: d = x1*x1+y1*y1 -- (no need for sqrt)
case MANHATTAN: d = abs(x1)+abs(y1)
<span style="color: #008080;">function</span> <span style="color: #000000;">distance</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">x1</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">y1</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">x2</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">y2</span><span style="color: #0000FF;">)</span>
case MINKOWSKI: d = power(abs(x1),3)+power(abs(y1),3) -- ("" power(d,1/3))
<span style="color: #004080;">atom</span> <span style="color: #000000;">d</span>
end switch
<span style="color: #000000;">x1</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">x2</span>
return d
<span style="color: #000000;">y1</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">y2</span>
end function
<span style="color: #008080;">switch</span> <span style="color: #000000;">dmode</span> <span style="color: #008080;">do</span>
 
<span style="color: #008080;">case</span> <span style="color: #000000;">EUCLID</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">d</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">x1</span><span style="color: #0000FF;">*</span><span style="color: #000000;">x1</span><span style="color: #0000FF;">+</span><span style="color: #000000;">y1</span><span style="color: #0000FF;">*</span><span style="color: #000000;">y1</span> <span style="color: #000080;font-style:italic;">-- (no need for sqrt)</span>
sequence nearestIndex, dist
<span style="color: #008080;">case</span> <span style="color: #000000;">MANHATTAN</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">d</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x1</span><span style="color: #0000FF;">)+</span><span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y1</span><span style="color: #0000FF;">)</span>
 
<span style="color: #008080;">case</span> <span style="color: #000000;">MINKOWSKI</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">d</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x1</span><span style="color: #0000FF;">),</span><span style="color: #000000;">3</span><span style="color: #0000FF;">)+</span><span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y1</span><span style="color: #0000FF;">),</span><span style="color: #000000;">3</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- ("" power(d,1/3))</span>
function checkRow(integer site, integer x, integer height)
<span style="color: #008080;">end</span> <span style="color: #008080;">switch</span>
bool res = false
<span style="color: #008080;">return</span> <span style="color: #000000;">d</span>
atom dxSquared
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
integer x1 = siteX[site]-x
switch dmode do
<span style="color: #004080;">sequence</span> <span style="color: #000000;">nearestIndex</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">dist</span>
case EUCLID: dxSquared = x1*x1
case MANHATTAN: dxSquared = abs(x1)
<span style="color: #008080;">function</span> <span style="color: #000000;">checkRow</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">site</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">height</span><span style="color: #0000FF;">)</span>
case MINKOWSKI: dxSquared = power(abs(x1),3)
<span style="color: #004080;">bool</span> <span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #004600;">false</span>
end switch
<span style="color: #004080;">atom</span> <span style="color: #000000;">dxSquared</span>
for y=1 to height do
<span style="color: #004080;">integer</span> <span style="color: #000000;">x1</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">siteX</span><span style="color: #0000FF;">[</span><span style="color: #000000;">site</span><span style="color: #0000FF;">]-</span><span style="color: #000000;">x</span>
-- atom dSquared = distance(siteX[site],siteY[site],x,y) -- (sub-optimal..)
<span style="color: #008080;">switch</span> <span style="color: #000000;">dmode</span> <span style="color: #008080;">do</span>
atom dSquared
<span style="color: #008080;">case</span> <span style="color: #000000;">EUCLID</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dxSquared</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">x1</span><span style="color: #0000FF;">*</span><span style="color: #000000;">x1</span>
integer y1 = siteY[site]-y
<span style="color: #008080;">case</span> <span style="color: #000000;">MANHATTAN</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dxSquared</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x1</span><span style="color: #0000FF;">)</span>
switch dmode do
<span style="color: #008080;">case</span> <span style="color: #000000;">MINKOWSKI</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dxSquared</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x1</span><span style="color: #0000FF;">),</span><span style="color: #000000;">3</span><span style="color: #0000FF;">)</span>
case EUCLID: dSquared = dxSquared + y1*y1
<span style="color: #008080;">end</span> <span style="color: #008080;">switch</span>
case MANHATTAN: dSquared = dxSquared + abs(y1)
<span style="color: #008080;">for</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">height</span> <span style="color: #008080;">do</span>
case MINKOWSKI: dSquared = dxSquared + power(abs(y1),3)
<span style="color: #000080;font-style:italic;">-- atom dSquared = distance(siteX[site],siteY[site],x,y) -- (sub-optimal..)</span>
end switch
<span style="color: #004080;">atom</span> <span style="color: #000000;">dSquared</span>
if dSquared<=dist[x,y] then
<span style="color: #004080;">integer</span> <span style="color: #000000;">y1</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">siteY</span><span style="color: #0000FF;">[</span><span style="color: #000000;">site</span><span style="color: #0000FF;">]-</span><span style="color: #000000;">y</span>
dist[x,y] = dSquared
<span style="color: #008080;">switch</span> <span style="color: #000000;">dmode</span> <span style="color: #008080;">do</span>
nearestIndex[x,y] = site
<span style="color: #008080;">case</span> <span style="color: #000000;">EUCLID</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dSquared</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dxSquared</span><span style="color: #0000FF;">+</span><span style="color: #000000;">y1</span><span style="color: #0000FF;">*</span><span style="color: #000000;">y1</span>
res = true
<span style="color: #008080;">case</span> <span style="color: #000000;">MANHATTAN</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dSquared</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dxSquared</span><span style="color: #0000FF;">+</span><span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y1</span><span style="color: #0000FF;">)</span>
end if
<span style="color: #008080;">case</span> <span style="color: #000000;">MINKOWSKI</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dSquared</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dxSquared</span><span style="color: #0000FF;">+</span><span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y1</span><span style="color: #0000FF;">),</span><span style="color: #000000;">3</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #008080;">end</span> <span style="color: #008080;">switch</span>
return res
<span style="color: #008080;">if</span> <span style="color: #000000;">dSquared</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">dist</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: #008080;">then</span>
end function
<span style="color: #000000;">dist</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: #000000;">dSquared</span>
 
<span style="color: #000000;">nearestIndex</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: #000000;">site</span>
function redraw_cb(Ihandle /*ih*/, integer /*posx*/, integer /*posy*/)
<span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #004600;">true</span>
integer {width, height} = IupGetIntInt(canvas, "DRAWSIZE")
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
if width!=last_width
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
or height!=last_height
<span style="color: #008080;">return</span> <span style="color: #000000;">res</span>
or nsites!=length(siteX) then
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
if nsites<1 then nsites = 1 end if
siteX = sq_rand(repeat(width,nsites))
<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>
siteY = sq_rand(repeat(height,nsites))
<span style="color: #004080;">integer</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">width</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">height</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>
siteC = sq_rand(repeat(#FFFFFF,nsites))
<span style="color: #008080;">if</span> <span style="color: #000000;">width</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">last_width</span>
last_width = width
<span style="color: #008080;">or</span> <span style="color: #000000;">height</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">last_height</span>
last_height = height
<span style="color: #008080;">or</span> <span style="color: #000000;">nsites</span><span style="color: #0000FF;">!=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">siteX</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span>
drawn = 0
<span style="color: #008080;">if</span> <span style="color: #000000;">nsites</span><span style="color: #0000FF;"><</span><span style="color: #000000;">1</span> <span style="color: #008080;">then</span> <span style="color: #000000;">nsites</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end if
<span style="color: #000000;">siteX</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sq_rand</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">width</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nsites</span><span style="color: #0000FF;">))</span>
if drawn!=dmode -- (prevent double-draw, and)
<span style="color: #000000;">siteY</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sq_rand</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">height</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nsites</span><span style="color: #0000FF;">))</span>
and not timer_active then -- (drawing when rug moved..)
<span style="color: #000000;">siteC</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sq_rand</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">#FFFFFF</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nsites</span><span style="color: #0000FF;">))</span>
drawn = dmode
<span style="color: #000000;">last_width</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">width</span>
cdCanvasActivate(cddbuffer)
<span style="color: #000000;">last_height</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">height</span>
atom t0 = time(), t1
<span style="color: #000000;">drawn</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
t1 = time()+0.25
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
nearestIndex = repeat(repeat(1,height),width)
<span style="color: #008080;">if</span> <span style="color: #000000;">drawn</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">dmode</span> <span style="color: #000080;font-style:italic;">-- (prevent double-draw, and)</span>
dist = repeat(repeat(0,height),width)
<span style="color: #008080;">and</span> <span style="color: #008080;">not</span> <span style="color: #000000;">timer_active</span> <span style="color: #008080;">then</span> <span style="color: #000080;font-style:italic;">-- (drawing when rug moved..)</span>
-- fill distance table with distances from the first site
<span style="color: #000000;">drawn</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dmode</span>
integer x1 = siteX[1], y1 = siteY[1]
<span style="color: #7060A8;">cdCanvasActivate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
for x=1 to width do
<span style="color: #7060A8;">cdCanvasClear</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
for y=1 to height do
<span style="color: #004080;">atom</span> <span style="color: #000000;">t0</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">(),</span> <span style="color: #000000;">t1</span>
dist[x,y] = distance(x1,y1,x,y)
<span style="color: #000000;">t1</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">()+</span><span style="color: #000000;">0.25</span>
end for
<span style="color: #000000;">nearestIndex</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">height</span><span style="color: #0000FF;">),</span><span style="color: #000000;">width</span><span style="color: #0000FF;">)</span>
if timer_active then exit end if
<span style="color: #000000;">dist</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">height</span><span style="color: #0000FF;">),</span><span style="color: #000000;">width</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #000080;font-style:italic;">-- fill distance table with distances from the first site</span>
--for other towns
<span style="color: #004080;">integer</span> <span style="color: #000000;">x1</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">siteX</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">],</span> <span style="color: #000000;">y1</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">siteY</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span>
for i=2 to nsites do
<span style="color: #008080;">for</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">width</span> <span style="color: #008080;">do</span>
-- look left
<span style="color: #008080;">for</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">height</span> <span style="color: #008080;">do</span>
for x=siteX[i] to 1 by -1 do
<span style="color: #000000;">dist</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: #000000;">distance</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y1</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>
if not checkRow(i, x, height) then exit end if
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">timer_active</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
-- look right
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
for x=siteX[i]+1 to width do
<span style="color: #000080;font-style:italic;">--for other towns</span>
if not checkRow(i, x, height) then exit end if
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #000000;">nsites</span> <span style="color: #008080;">do</span>
end for
<span style="color: #000080;font-style:italic;">-- look left</span>
if timer_active then exit end if
<span style="color: #008080;">for</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">=</span><span style="color: #000000;">siteX</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">to</span> <span style="color: #000000;">1</span> <span style="color: #008080;">by</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span>
if time()>t1 then
<span style="color: #008080;">if</span> <span style="color: #008080;">not</span> <span style="color: #000000;">checkRow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">i</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">height</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
IupSetStrAttribute(dlg, "TITLE", "Voronoi diagram (generating - %3.2f%%)",{100*i/nsites})
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
IupFlush()
<span style="color: #000080;font-style:italic;">-- t1 =look time()+0.25right</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">=</span><span style="color: #000000;">siteX</span><span style="color: #0000FF;">[</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;">width</span> <span style="color: #008080;">do</span>
end if
<span style="color: #008080;">if</span> <span style="color: #008080;">not</span> <span style="color: #000000;">checkRow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">i</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">height</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end for
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
t1 = time()
<span style="color: #008080;">if</span> <span style="color: #000000;">timer_active</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
for y=1 to height do
<span style="color: #008080;">if</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">()></span><span style="color: #000000;">t1</span> <span style="color: #008080;">then</span>
integer nearest = nearestIndex[1,y]
<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;">"Voronoi diagram (generating - %3.2f%%)"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">100</span><span style="color: #0000FF;">*</span><span style="color: #000000;">i</span><span style="color: #0000FF;">/</span><span style="color: #000000;">nsites</span><span style="color: #0000FF;">})</span>
integer s = 1
<span style="color: #7060A8;">IupFlush</span><span style="color: #0000FF;">()</span>
for x=2 to width do
<span style="color: #000000;">t1</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">()+</span><span style="color: #000000;">0.25</span>
if nearestIndex[x,y]<>nearest then
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
cdCanvasSetForeground(cddbuffer, siteC[nearest])
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
cdCanvasLine(cddbuffer, s-1, y-1, x-2, y-1)
<span style="color: #000000;">t1</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">time</span><span style="color: #0000FF;">()</span>
nearest = nearestIndex[x,y]
<span style="color: #008080;">for</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">height</span> <span style="color: #008080;">do</span>
s = x
<span style="color: #004080;">integer</span> <span style="color: #000000;">nearest</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">nearestIndex</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">y</span><span style="color: #0000FF;">]</span>
end if
<span style="color: #004080;">integer</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span>
end for
<span style="color: #008080;">for</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #000000;">width</span> <span style="color: #008080;">do</span>
if timer_active then exit end if
<span style="color: #008080;">if</span> <span style="color: #000000;">nearestIndex</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;">nearest</span> <span style="color: #008080;">then</span>
cdCanvasSetForeground(cddbuffer, siteC[nearest])
<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: #000000;">siteC</span><span style="color: #0000FF;">[</span><span style="color: #000000;">nearest</span><span style="color: #0000FF;">])</span>
cdCanvasLine(cddbuffer, s-1, y-1, width-1, y-1)
<span style="color: #7060A8;">cdCanvasLine</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">x</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;">1</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #000000;">nearest</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">nearestIndex</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>
if not timer_active then
<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">x</span>
cdCanvasSetForeground(cddbuffer, CD_BLACK)
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
for i=1 to nsites do
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
cdCanvasSector(cddbuffer, siteX[i], siteY[i], 2, 2, 0, 360)
<span style="color: #008080;">if</span> <span style="color: #000000;">timer_active</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end for
<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: #000000;">siteC</span><span style="color: #0000FF;">[</span><span style="color: #000000;">nearest</span><span style="color: #0000FF;">])</span>
cdCanvasFlush(cddbuffer)
<span style="color: #7060A8;">cdCanvasLine</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">width</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
IupSetStrAttribute(dlg, "TITLE", "Voronoi diagram - %s, %dx%d, %d sites, %3.2fs",{dmodes[dmode],width,height,nsites,time()-t0})
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
end if
<span style="color: #008080;">if</span> <span style="color: #008080;">not</span> <span style="color: #000000;">timer_active</span> <span style="color: #008080;">then</span>
end if
<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_BLACK</span><span style="color: #0000FF;">)</span>
return IUP_DEFAULT
<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;">nsites</span> <span style="color: #008080;">do</span>
end function
<span style="color: #7060A8;">cdCanvasSector</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">siteX</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span> <span style="color: #000000;">siteY</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">],</span> <span style="color: #000000;">2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">360</span><span style="color: #0000FF;">)</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
function map_cb(Ihandle ih)
<span style="color: #7060A8;">cdCanvasFlush</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
cdcanvas = cdCreateCanvas(CD_IUP, ih)
<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;">"Voronoi diagram - %s, %dx%d, %d sites, %3.2fs"</span><span style="color: #0000FF;">,</span>
cddbuffer = cdCreateCanvas(CD_DBUFFER, cdcanvas)
<span style="color: #0000FF;">{</span><span style="color: #000000;">dmodes</span><span style="color: #0000FF;">[</span><span style="color: #000000;">dmode</span><span style="color: #0000FF;">],</span><span style="color: #000000;">width</span><span style="color: #0000FF;">,</span><span style="color: #000000;">height</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nsites</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">time</span><span style="color: #0000FF;">()-</span><span style="color: #000000;">t0</span><span style="color: #0000FF;">})</span>
cdCanvasSetBackground(cddbuffer, CD_WHITE)
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
cdCanvasSetForeground(cddbuffer, CD_BLACK)
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
return IUP_DEFAULT
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
end function
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
 
function esc_close(Ihandle /*ih*/, atom c)
<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>
if c=K_ESC then return IUP_CLOSE end if
<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>
integer wasdmode = dmode
<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>
switch c do
<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>
case '+': nsites *= 2
<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_BLACK</span><span style="color: #0000FF;">)</span>
case '-': nsites = max(floor(nsites/2),1)
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
case 'E','e': dmode = EUCLID
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
case 'M','m': dmode = MANHATTAN
case 'W','w': dmode = MINKOWSKI
<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>
end switch
<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>
if dmode!=wasdmode
<span style="color: #004080;">integer</span> <span style="color: #000000;">wasdmode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dmode</span>
or nsites!=length(siteX) then
<span style="color: #008080;">switch</span> <span style="color: #000000;">c</span> <span style="color: #008080;">do</span>
-- give any current drawing process 0.1s to abandon:
<span style="color: #008080;">case</span> <span style="color: #008000;">'+'</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">nsites</span> <span style="color: #0000FF;">*=</span> <span style="color: #000000;">2</span>
timer_active = 1
<span style="color: #008080;">case</span> <span style="color: #008000;">'-'</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">nsites</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">max</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">nsites</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">),</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
IupStoreAttribute(timer, "RUN", "YES")
<span style="color: #008080;">case</span> <span style="color: #008000;">'E'</span><span style="color: #0000FF;">,</span><span style="color: #008000;">'e'</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dmode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">EUCLID</span>
-- IupUpdate(canvas)
<span style="color: #008080;">case</span> <span style="color: #008000;">'M'</span><span style="color: #0000FF;">,</span><span style="color: #008000;">'m'</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dmode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">MANHATTAN</span>
end if
<span style="color: #008080;">case</span> <span style="color: #008000;">'W'</span><span style="color: #0000FF;">,</span><span style="color: #008000;">'w'</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">dmode</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">MINKOWSKI</span>
return IUP_CONTINUE
<span style="color: #008080;">end</span> <span style="color: #008080;">switch</span>
end function
<span style="color: #008080;">if</span> <span style="color: #000000;">dmode</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">wasdmode</span>
 
<span style="color: #008080;">or</span> <span style="color: #000000;">nsites</span><span style="color: #0000FF;">!=</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">siteX</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span>
function timer_cb(Ihandle /*ih*/)
<span style="color: #000080;font-style:italic;">-- give any current drawing process 0.1s to abandon:</span>
timer_active = 0
<span style="color: #000000;">timer_active</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span>
IupStoreAttribute(timer, "RUN", "NO")
<span style="color: #7060A8;">IupStoreAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">timer</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"RUN"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"YES"</span><span style="color: #0000FF;">)</span>
IupUpdate(canvas)
<span style="color: #000080;font-style:italic;">-- IupUpdate(canvas)</span>
return IUP_IGNORE
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end function
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_CONTINUE</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
procedure main()
IupOpen()
<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>
<span style="color: #000000;">timer_active</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
canvas = IupCanvas(NULL)
<span style="color: #7060A8;">IupStoreAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">timer</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"RUN"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"NO"</span><span style="color: #0000FF;">)</span>
IupSetAttribute(canvas, "RASTERSIZE", "600x400") -- initial size
<span style="color: #7060A8;">IupUpdate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">)</span>
IupSetCallback(canvas, "MAP_CB", Icallback("map_cb"))
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_IGNORE</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
timer = IupTimer(Icallback("timer_cb"), 100, 0) -- (inactive)
 
<span style="color: #008080;">procedure</span> <span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
dlg = IupDialog(canvas)
<span style="color: #7060A8;">IupOpen</span><span style="color: #0000FF;">()</span>
IupSetAttribute(dlg, "TITLE", "Voronoi diagram")
IupSetCallback(dlg, "K_ANY", Icallback("esc_close"))
<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=600x400"</span><span style="color: #0000FF;">)</span>
IupSetCallback(canvas, "ACTION", Icallback("redraw_cb"))
<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>
 
<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>
IupMap(dlg)
IupSetAttribute(canvas, "RASTERSIZE", NULL) -- release the minimum limitation
<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;">100</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- (inactive)</span>
IupShowXY(dlg,IUP_CENTER,IUP_CENTER)
IupMainLoop()
<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="Voronoi diagram"`</span><span style="color: #0000FF;">)</span>
IupClose()
<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>
end procedure
<span style="color: #7060A8;">IupShow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">)</span>
main()</lang>
<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> <span style="color: #000080;font-style:italic;">-- release the minimum limitation</span>
<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>
<span style="color: #7060A8;">IupMainLoop</span><span style="color: #0000FF;">()</span>
<span style="color: #7060A8;">IupClose</span><span style="color: #0000FF;">()</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
<span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
<!--</lang>-->
 
=={{header|Processing}}==
Petelomax
7,794

edits

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