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Death Star (view source)

Revision as of 16:55, 12 November 2021

25,978 bytes added ,  2 years ago
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→‎{{header|Phix}}: added syntax colouring, made p2js compatible
(Added 11l)
m (→‎{{header|Phix}}: added syntax colouring, made p2js compatible)
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{{trans|Go}}
{{libheader|Phix/pGUI}}
{{libheader|Phix/online}}
<lang Phix>-- demo\rosetta\DeathStar.exw
You can run this online [http://phix.x10.mx/p2js/deathstar.htm here]. Note it is rather slow to redraw fullscreen.
include pGUI.e
<!--<lang Phix>(phixonline)-->
 
<span style="color: #000080;font-style:italic;">--
Ihandle dlg, canvas
-- demo\rosetta\DeathStar.exw
cdCanvas cddbuffer, cdcanvas
-- ==========================
 
--
function dot(sequence x, sequence y)
-- Translated from Go.
return sum(sq_mul(x,y))
--</span>
end function
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
 
<span style="color: #008080;">include</span> <span style="color: #000000;">pGUI</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
function normalize(sequence v)
atom len = sqrt(dot(v, v))
if len=0 then return {0,0,0} end if
return sq_mul(v,1/len)
end function
 
enum X,Y,Z
 
function hit(sequence s, atom x, y, atom r)
x -= s[X]
y -= s[Y]
atom zsq := r*r - (x*x + y*y)
if zsq >= 0 then
atom zsqrt := sqrt(zsq)
return {s[Z] - zsqrt, s[Z] + zsqrt, true}
end if
return {0, 0, false}
end function
<span style="color: #008080;">constant</span> <span style="color: #000000;">title</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"Death Star"</span>
procedure deathStar(integer width, height, atom k, atom amb, sequence direction)
<span style="color: #004080;">Ihandle</span> <span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">canvas</span>
integer lum
<span style="color: #004080;">cdCanvas</span> <span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cdcanvas</span>
sequence vec
integer r = floor((min(width,height)-40)/2)
integer cx = floor(width/2)
integer cy = floor(height/2)
sequence pos = {0,0,0},
neg = {r*-3/4,r*-3/4,r*-1/4}
 
for y = pos[Y]-r to pos[Y]+r do
for x = pos[X]-r to pos[X]+r do
atom {zb1, zb2, hit1} := hit(pos, x, y, r)
if hit1 then
atom {zs1, zs2, hit2} := hit(neg, x, y, r/2)
if not hit2 or zs2<=zb2 then
if hit2 and zs1<=zb1 then
vec = {neg[X] - x, neg[Y] - y, neg[Z] - zs2}
else
vec = {x - pos[X], y - pos[Y], zb1 - pos[Z]}
-- vec = {x, y, zb1}
end if
atom s = dot(direction, normalize(vec))
lum = and_bits(#FF,255*(iff(s<0?0:power(s,k))+amb)/(1+amb))
lum += lum*#100+lum*#10000
cdCanvasPixel(cddbuffer, cx+x, cy-y, lum)
end if
end if
end for
end for
end procedure
<span style="color: #008080;">function</span> <span style="color: #000000;">dot</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">)</span>
function redraw_cb(Ihandle /*ih*/, integer /*posx*/, integer /*posy*/)
<span style="color: #008080;">return</span> <span style="color: #7060A8;">sum</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">sq_mul</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>
integer {width, height} = IupGetIntInt(canvas, "DRAWSIZE")
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
cdCanvasActivate(cddbuffer)
cdCanvasClear(cddbuffer)
<span style="color: #008080;">function</span> <span style="color: #000000;">normalize</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">)</span>
deathStar(width, height, 1.5, 0.2, normalize({20, -40, -10}))
<span style="color: #004080;">atom</span> <span style="color: #000000;">len</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dot</span><span style="color: #0000FF;">(</span><span style="color: #000000;">v</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">))</span>
cdCanvasFlush(cddbuffer)
<span style="color: #008080;">if</span> <span style="color: #000000;">len</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span> <span style="color: #008080;">return</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">}</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
return IUP_DEFAULT
<span style="color: #008080;">return</span> <span style="color: #7060A8;">sq_mul</span><span style="color: #0000FF;">(</span><span style="color: #000000;">v</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">/</span><span style="color: #000000;">len</span><span style="color: #0000FF;">)</span>
end function
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
 
function map_cb(Ihandle ih)
<span style="color: #008080;">enum</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;">Z</span>
cdcanvas = cdCreateCanvas(CD_IUP, ih)
cddbuffer = cdCreateCanvas(CD_DBUFFER, cdcanvas)
<span style="color: #008080;">function</span> <span style="color: #000000;">hit</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</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;">r</span><span style="color: #0000FF;">)</span>
cdCanvasSetBackground(cddbuffer, CD_BLACK)
<span style="color: #000000;">x</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">X</span><span style="color: #0000FF;">]</span>
return IUP_DEFAULT
<span style="color: #000000;">y</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">Y</span><span style="color: #0000FF;">]</span>
end function
<span style="color: #004080;">atom</span> <span style="color: #000000;">zsq</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">r</span><span style="color: #0000FF;">*</span><span style="color: #000000;">r</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;">x</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">*</span><span style="color: #000000;">y</span><span style="color: #0000FF;">)</span>
 
<span style="color: #008080;">if</span> <span style="color: #000000;">zsq</span> <span style="color: #0000FF;">>=</span> <span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
procedure main()
<span style="color: #004080;">atom</span> <span style="color: #000000;">zsqrt</span> <span style="color: #0000FF;">:=</span> <span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">zsq</span><span style="color: #0000FF;">)</span>
IupOpen()
<span style="color: #008080;">return</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">Z</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">zsqrt</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">Z</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">zsqrt</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">true</span><span style="color: #0000FF;">}</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
canvas = IupCanvas(NULL)
<span style="color: #008080;">return</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">false</span><span style="color: #0000FF;">}</span>
IupSetAttribute(canvas, "RASTERSIZE", "340x340") -- initial size
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
IupSetCallback(canvas, "MAP_CB", Icallback("map_cb"))
 
<span style="color: #008080;">procedure</span> <span style="color: #000000;">deathStar</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</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: #004080;">atom</span> <span style="color: #000000;">k</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</span> <span style="color: #000000;">amb</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">sequence</span> <span style="color: #000000;">direction</span><span style="color: #0000FF;">)</span>
dlg = IupDialog(canvas)
IupSetAttribute(dlg, "TITLE", "Draw a sphere")
<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;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">t1</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">t0</span><span style="color: #0000FF;">,</span>
IupSetCallback(canvas, "ACTION", Icallback("redraw_cb"))
<span style="color: #000000;">lmul</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">255</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">+</span><span style="color: #000000;">amb</span><span style="color: #0000FF;">)</span>
 
<span style="color: #004080;">integer</span> <span style="color: #000000;">r</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">((</span><span style="color: #7060A8;">min</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;">40</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">),</span>
IupMap(dlg)
<span style="color: #000000;">cx</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">width</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">),</span>
IupSetAttribute(canvas, "RASTERSIZE", NULL) -- release the minimum limitation
<span style="color: #000000;">cy</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">height</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">)</span>
IupShowXY(dlg,IUP_CENTER,IUP_CENTER)
<span style="color: #004080;">sequence</span> <span style="color: #000000;">pos</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">},</span>
IupMainLoop()
<span style="color: #000000;">neg</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">r</span><span style="color: #0000FF;">*-</span><span style="color: #000000;">3</span><span style="color: #0000FF;">/</span><span style="color: #000000;">4</span><span style="color: #0000FF;">,</span><span style="color: #000000;">r</span><span style="color: #0000FF;">*-</span><span style="color: #000000;">3</span><span style="color: #0000FF;">/</span><span style="color: #000000;">4</span><span style="color: #0000FF;">,</span><span style="color: #000000;">r</span><span style="color: #0000FF;">*-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">/</span><span style="color: #000000;">4</span><span style="color: #0000FF;">}</span>
IupClose()
end procedure
<span style="color: #008080;">for</span> <span style="color: #000000;">y</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">r</span> <span style="color: #008080;">to</span> <span style="color: #0000FF;">+</span><span style="color: #000000;">r</span> <span style="color: #008080;">do</span>
 
<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>
main()</lang>
<span style="color: #000080;font-style:italic;">-- Let the user know we aren't completely dead just yet</span>
<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;">"%s - drawing (%d%%)"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">title</span><span style="color: #0000FF;">,</span><span style="color: #000000;">100</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">+</span><span style="color: #000000;">r</span><span style="color: #0000FF;">)/(</span><span style="color: #000000;">2</span><span style="color: #0000FF;">*</span><span style="color: #000000;">r</span><span style="color: #0000FF;">)})</span>
<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;">1</span>
<span style="color: #000080;font-style:italic;">--
-- Hmm, not entirely sure why this is needed, but without it
-- after ~7 seconds the window gets a "(Not Responding)" and
-- then something decides to force a full repaint, which at
-- fullscreen will never finish in &lt; 7s on this ancient box.
-- I suppose this is the corrollary to the above, this time
-- letting Windows 10 know the process is not quite dead...
-- Currently and possibly forever neither of these routines
-- exist in pGUI.js, the browser is more forgiving anyway.
--</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: #008080;">if</span> <span style="color: #7060A8;">IupLoopStep</span><span style="color: #0000FF;">()=</span><span style="color: #004600;">IUP_CLOSE</span> <span style="color: #008080;">then</span>
<span style="color: #7060A8;">IupExitLoop</span><span style="color: #0000FF;">()</span>
<span style="color: #008080;">exit</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">x</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">r</span> <span style="color: #008080;">to</span> <span style="color: #0000FF;">+</span><span style="color: #000000;">r</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">atom</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">zb1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">zb2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">hit1</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">hit</span><span style="color: #0000FF;">(</span><span style="color: #000000;">pos</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;">r</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">hit1</span> <span style="color: #008080;">then</span>
<span style="color: #004080;">atom</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">zs1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">zs2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">hit2</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">hit</span><span style="color: #0000FF;">(</span><span style="color: #000000;">neg</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;">r</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #008080;">not</span> <span style="color: #000000;">hit2</span> <span style="color: #008080;">or</span> <span style="color: #000000;">zs2</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">zb2</span> <span style="color: #008080;">then</span>
<span style="color: #004080;">bool</span> <span style="color: #000000;">dish</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">hit2</span> <span style="color: #008080;">and</span> <span style="color: #000000;">zs1</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">zb1</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">vec</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dish</span><span style="color: #0000FF;">?</span><span style="color: #7060A8;">sq_sub</span><span style="color: #0000FF;">(</span><span style="color: #000000;">neg</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;">zs2</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;">zb1</span><span style="color: #0000FF;">})</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dot</span><span style="color: #0000FF;">(</span><span style="color: #000000;">direction</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">normalize</span><span style="color: #0000FF;">(</span><span style="color: #000000;">vec</span><span style="color: #0000FF;">)),</span>
<span style="color: #000000;">l</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">?</span><span style="color: #000000;">0</span><span style="color: #0000FF;">:</span><span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #000000;">k</span><span style="color: #0000FF;">))</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">lum</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">and_bits</span><span style="color: #0000FF;">(</span><span style="color: #000000;">#FF</span><span style="color: #0000FF;">,</span><span style="color: #000000;">lmul</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">l</span><span style="color: #0000FF;">+</span><span style="color: #000000;">amb</span><span style="color: #0000FF;">))</span>
<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;">cx</span><span style="color: #0000FF;">+</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cy</span><span style="color: #0000FF;">-</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">lum</span><span style="color: #0000FF;">*</span><span style="color: #000000;">#10101</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;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">t1</span><span style="color: #0000FF;">!=</span><span style="color: #000000;">t0</span> <span style="color: #008080;">then</span>
<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: #000000;">title</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: #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>
<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>
<span style="color: #7060A8;">cdCanvasActivate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
<span style="color: #7060A8;">cdCanvasClear</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">deathStar</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;">1.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">0.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">normalize</span><span style="color: #0000FF;">({</span><span style="color: #000000;">20</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">40</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">10</span><span style="color: #0000FF;">}))</span>
<span style="color: #7060A8;">cdCanvasFlush</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<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>
<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>
<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>
<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_BLACK</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">procedure</span> <span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
<span style="color: #7060A8;">IupOpen</span><span style="color: #0000FF;">()</span>
<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=340x340"</span><span style="color: #0000FF;">)</span>
<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>
<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="%s"`</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">title</span><span style="color: #0000FF;">})</span>
<span style="color: #7060A8;">IupMap</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">)</span>
<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: #7060A8;">IupShow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">)</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|POV-Ray}}==
Petelomax
7,813

edits

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