force use of pandoc version >= 3.1.12.2
The `bin/pandoc-wrapper.sh` tool will verify that the ssytem has a recent enough version of `pandoc(1)`. We explain why we insist on `pandoc(1)`. version >= 3.1.12.2 in comments where the $PANDOC_MIN_VERSION is set. Added `--wrap=preserve` as a default argument to `pandoc(1)`. While this change will impact every HTML file generated, we believe this will improve the ability of someone to look at the generated HTML and correlate with the original markdown. Changed `bin/pandoc-wrapper.sh` VERSION from "1.4.2 2024-03-17" to "1.4.3 2024-03-18". Performed `make www` to achieve all of the above and to generate HTML using the new `--wrap=preserve` `pandoc(1)` mode.
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@@ -140,20 +140,18 @@ Location: <a href="../../location.html#JP">JP</a> - <em>Japan</em>
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span></span></code></pre></div>
|
||||
<p>There are two alt versions that let you control the compile time
|
||||
variables that control the fluid behaviour and the added variables to
|
||||
speed up or slow down the fluid as well as setting a timeout (if not 0):
|
||||
one for the original black and white and one for the colour one added by
|
||||
the author (at the request of the judges at the time of the contest).
|
||||
Another version is the deobfuscated version provided by the author as
|
||||
well. See the <a href="#alternate-code">Alternate code</a> section below
|
||||
for more details.</p>
|
||||
<p>There are two alt versions that let you control the compile time variables that
|
||||
control the fluid behaviour and the added variables to speed up or slow down the
|
||||
fluid as well as setting a timeout (if not 0): one for the original black and
|
||||
white and one for the colour one added by the author (at the request of the
|
||||
judges at the time of the contest). Another version is the deobfuscated version
|
||||
provided by the author as well. See the <a href="#alternate-code">Alternate code</a>
|
||||
section below for more details.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh1</span> <span class="op"><</span> file</span></code></pre></div>
|
||||
<p>WARNING: if you’re sensitive to/don’t like flashing colours/text or
|
||||
just want to see what this looks like not going so fast then you might
|
||||
wish to try the <a href="#alternate-code">Alternate code</a>
|
||||
instead.</p>
|
||||
<p>WARNING: if you’re sensitive to/don’t like flashing colours/text or just want to
|
||||
see what this looks like not going so fast then you might wish to try the
|
||||
<a href="#alternate-code">Alternate code</a> instead.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.bw.sh</span> endoh1.c</span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span> endoh1.c</span>
|
||||
@@ -164,91 +162,75 @@ instead.</p>
|
||||
<span id="cb3-7"><a href="#cb3-7" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.bw.sh</span> fountain.txt</span>
|
||||
<span id="cb3-8"><a href="#cb3-8" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.sh</span> fountain.txt</span></code></pre></div>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>The files <a href="endoh1.alt.c">endoh1.alt.c</a> and <a
|
||||
href="endoh1_color.alt.c">endoh1_color.alt.c</a> correspond to <a
|
||||
href="endoh1.c">endoh1.c</a> and <a
|
||||
href="endoh1_color.c">endoh1_color.c</a> but which allow you to speed up
|
||||
or slow down the fluid and change the behaviour of the fluid. The file
|
||||
<a href="endoh1.alt.c">endoh1.alt2.c</a> is deobfuscated and was
|
||||
provided by the author.</p>
|
||||
<p>The files <a href="endoh1.alt.c">endoh1.alt.c</a> and
|
||||
<a href="endoh1_color.alt.c">endoh1_color.alt.c</a> correspond to <a href="endoh1.c">endoh1.c</a> and
|
||||
<a href="endoh1_color.c">endoh1_color.c</a> but which allow you to speed up or slow down
|
||||
the fluid and change the behaviour of the fluid. The file
|
||||
<a href="endoh1.alt.c">endoh1.alt2.c</a> is deobfuscated and was provided by the author.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<p>For the default values, try:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> alt</span></code></pre></div>
|
||||
<p>In the <code>alt</code> versions a default time of 10 seconds is set
|
||||
as an alarm so that one can more easily go through the list of files to
|
||||
see them all in succession, for fun. That is controlled by the variable
|
||||
<code>TIMER</code> at compilation. For instance if you wish to change
|
||||
the value to 5:</p>
|
||||
<p>In the <code>alt</code> versions a default time of 10 seconds is set as an alarm so that
|
||||
one can more easily go through the list of files to see them all in succession,
|
||||
for fun. That is controlled by the variable <code>TIMER</code> at compilation.
|
||||
For instance if you wish to change the value to 5:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber TIMER=5 alt</span></code></pre></div>
|
||||
<p>If you want to disable the alarm time, set it to 0:</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber TIMER=0 alt</span></code></pre></div>
|
||||
<p>It cannot be < 0 or > 60 (arbitrarily selected).</p>
|
||||
<p>The <code>SLEEP</code> variable is to delay the time between updates
|
||||
to make it easier to see and to not flash too quickly. The code protects
|
||||
against a value < 0 and defaults to 12321 but you can change it to.
|
||||
For instance to slow it down you could increase the sleep time from
|
||||
<code>12321</code> to <code>50000</code>:</p>
|
||||
<p>The <code>SLEEP</code> variable is to delay the time between updates to make it easier to
|
||||
see and to not flash too quickly. The code protects against a value < 0 and
|
||||
defaults to 12321 but you can change it to. For instance to slow it down you
|
||||
could increase the sleep time from <code>12321</code> to <code>50000</code>:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber SLEEP=50000 alt</span></code></pre></div>
|
||||
<p>If you wish to speed it up you might decrease the sleep time from
|
||||
<code>12321</code> to <code>9999</code>:</p>
|
||||
<p>If you wish to speed it up you might decrease the sleep time from <code>12321</code> to
|
||||
<code>9999</code>:</p>
|
||||
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber SLEEP=9999 alt</span></code></pre></div>
|
||||
<p>WARNING: the lower the value the faster it will flash so be careful
|
||||
if you’re sensitive to this.</p>
|
||||
<p>WARNING: the lower the value the faster it will flash so be careful if you’re
|
||||
sensitive to this.</p>
|
||||
<p>If you wish to change the gravity factor, pressure factor and/or
|
||||
viscosity factor, you should redefine the values <code>GRAVITY</code>,
|
||||
<code>PRESSURE</code> and/or <code>VISCOSITY</code> macros,
|
||||
respectively. For instance if you wish to change the viscosity and
|
||||
pressure factors but leave the other values alone:</p>
|
||||
viscosity factor, you should redefine the values <code>GRAVITY</code>, <code>PRESSURE</code> and/or
|
||||
<code>VISCOSITY</code> macros, respectively. For instance if you wish to change the
|
||||
viscosity and pressure factors but leave the other values alone:</p>
|
||||
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber VISCOSITY=X PRESSURE=Y alt</span></code></pre></div>
|
||||
<p>where <code>X</code> and <code>Y</code> are numbers or the letter
|
||||
<code>I</code> and which are, respectively, the viscosity and pressure
|
||||
factors. There is no attempt to check the value or type because doing so
|
||||
prevents the macros from being defined to <code>I</code> which would
|
||||
<p>where <code>X</code> and <code>Y</code> are numbers or the letter <code>I</code> and which are, respectively, the
|
||||
viscosity and pressure factors. There is no attempt to check the value or type
|
||||
because doing so prevents the macros from being defined to <code>I</code> which would
|
||||
prevent the author’s remarks about it from being done.</p>
|
||||
<p>You might also wish to try redefining the macros <code>G</code>,
|
||||
<code>P</code> and/or <code>V</code>. For instance:</p>
|
||||
<div class="sourceCode" id="cb10"><pre
|
||||
class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber GRAVITY=5 PRESSURE=5 VISCOSITY=5 alt</span></code></pre></div>
|
||||
<p>You might also wish to try redefining the macros <code>G</code>, <code>P</code> and/or <code>V</code>. For
|
||||
instance:</p>
|
||||
<div class="sourceCode" id="cb10"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber GRAVITY=5 PRESSURE=5 VISCOSITY=5 alt</span></code></pre></div>
|
||||
<p>You might try even:</p>
|
||||
<div class="sourceCode" id="cb11"><pre
|
||||
class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber GRAVITY=I alt</span></code></pre></div>
|
||||
<div class="sourceCode" id="cb11"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> clobber GRAVITY=I alt</span></code></pre></div>
|
||||
<p>See the author’s remarks for details on these macros where:</p>
|
||||
<pre><code>G = GRAVITY
|
||||
P = PRESSURE
|
||||
V = VISCOSITY</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<p>Use <code>endoh1.alt</code>, <code>endoh1_color.alt</code> and
|
||||
<code>endoh1.alt2</code> as you would <code>endoh1</code> and
|
||||
<code>endoh1_color</code> above.</p>
|
||||
<p>Use <code>endoh1.alt</code>, <code>endoh1_color.alt</code> and <code>endoh1.alt2</code> as you would <code>endoh1</code>
|
||||
and <code>endoh1_color</code> above.</p>
|
||||
<h3 id="alternate-try">Alternate try:</h3>
|
||||
<p>To see two different ways run on the source file and each of the text
|
||||
files, try:</p>
|
||||
<div class="sourceCode" id="cb13"><pre
|
||||
class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.alt.sh</span></span></code></pre></div>
|
||||
<p>The second run of each will be with the gravity factor set to
|
||||
<code>I</code>.</p>
|
||||
<p>To see the same thing but in the original uncoloured version,
|
||||
<p>To see two different ways run on the source file and each of the text files,
|
||||
try:</p>
|
||||
<div class="sourceCode" id="cb14"><pre
|
||||
class="sourceCode sh"><code class="sourceCode bash"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.alt.bw.sh</span></span></code></pre></div>
|
||||
<div class="sourceCode" id="cb13"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.alt.sh</span></span></code></pre></div>
|
||||
<p>The second run of each will be with the gravity factor set to <code>I</code>.</p>
|
||||
<p>To see the same thing but in the original uncoloured version, try:</p>
|
||||
<div class="sourceCode" id="cb14"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="ex">./try.alt.bw.sh</span></span></code></pre></div>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Let’s play <a
|
||||
href="https://en.wikipedia.org/wiki/Jeopardy!">Jeopardy!</a></p>
|
||||
<p>A: An obfuscated program that deals with complex numbers and produces
|
||||
animated ASCII graphics. Q: What is a Mandelbrot simulator?</p>
|
||||
<p>Let’s play <a href="https://en.wikipedia.org/wiki/Jeopardy!">Jeopardy!</a></p>
|
||||
<p>A: An obfuscated program that deals with complex numbers and produces animated ASCII graphics.
|
||||
Q: What is a Mandelbrot simulator?</p>
|
||||
<p>Bzzzt!</p>
|
||||
<p>Such heavily squeezed fluid simulation (this is parsed uniquely as
|
||||
fluids are not squeezable) has a few quirks that the judges were happy
|
||||
to experiment with.</p>
|
||||
<p>One configuration file was inspired by an <a
|
||||
href="https://web.archive.org/web/20230711134609/https://whatif.xkcd.com/6/">XKCD
|
||||
what if? entry</a>.</p>
|
||||
<p>Such heavily squeezed fluid simulation (this is parsed uniquely
|
||||
as fluids are not squeezable) has a few quirks that the judges were
|
||||
happy to experiment with.</p>
|
||||
<p>One configuration file was inspired by an <a href="https://web.archive.org/web/20230711134609/https://whatif.xkcd.com/6/">XKCD what if?
|
||||
entry</a>.</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
<h3 id="synopsis">Synopsis</h3>
|
||||
<p><strong>DO NOT FORGET</strong> <code>-DG=1 -DP=4 -DV=8</code> and
|
||||
make your terminal window larger than 80 x 25.</p>
|
||||
<div class="sourceCode" id="cb15"><pre
|
||||
class="sourceCode sh"><code class="sourceCode bash"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> endoh1.c <span class="at">-DG</span><span class="op">=</span>1 <span class="at">-DP</span><span class="op">=</span>4 <span class="at">-DV</span><span class="op">=</span>8 <span class="at">-D_BSD_SOURCE</span> <span class="at">-o</span> endoh1 <span class="at">-lm</span></span>
|
||||
<p><strong>DO NOT FORGET</strong> <code>-DG=1 -DP=4 -DV=8</code> and make your terminal window larger
|
||||
than 80 x 25.</p>
|
||||
<div class="sourceCode" id="cb15"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a><span class="fu">cc</span> endoh1.c <span class="at">-DG</span><span class="op">=</span>1 <span class="at">-DP</span><span class="op">=</span>4 <span class="at">-DV</span><span class="op">=</span>8 <span class="at">-D_BSD_SOURCE</span> <span class="at">-o</span> endoh1 <span class="at">-lm</span></span>
|
||||
<span id="cb15-2"><a href="#cb15-2" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh1</span> <span class="op"><</span> endoh1.c</span>
|
||||
<span id="cb15-3"><a href="#cb15-3" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh1</span> <span class="op"><</span> logo.txt</span>
|
||||
<span id="cb15-4"><a href="#cb15-4" aria-hidden="true" tabindex="-1"></a><span class="ex">./endoh1</span> <span class="op"><</span> column.txt</span>
|
||||
@@ -281,202 +263,119 @@ class="sourceCode sh"><code class="sourceCode bash"><span id="cb15-1"><a href="#
|
||||
`-'`' `-'`-' `-'`-' `-'`' `'`' `'`' `'`'
|
||||
|
||||
</code></pre>
|
||||
<p>This program is a fluid simulator using the <a
|
||||
href="http://en.wikipedia.org/wiki/Smoothed-particle_hydrodynamics">Smoothed-particle
|
||||
hydrodynamics (SPH)</a> method.</p>
|
||||
<p>The SPH particles represent the fluid flow. Particles have
|
||||
information about the position, density, and velocity. In every
|
||||
simulation step, they are changed by pressure force, viscosity force,
|
||||
and external force (i.e., gravity).</p>
|
||||
<p>This program reads a text from standard input, and uses it as an
|
||||
initial configuration of the particles. The character <code>#</code>
|
||||
represents a “wall particle” (a particle with a fixed position), and any
|
||||
other non-space characters represent free particles.</p>
|
||||
<p>The compilation options <code>-DG=1 -DP=4 -DV=8</code> represent,
|
||||
respectively, the factor of gravity, pressure, and viscosity. By
|
||||
changing their values, you can see different fluid behavior.</p>
|
||||
<p><a href="http://en.wikipedia.org/wiki/Marching_squares">Marching
|
||||
square</a>-like algorithm is used to render the particles.</p>
|
||||
<p>This program is a fluid simulator using the <a href="http://en.wikipedia.org/wiki/Smoothed-particle_hydrodynamics">Smoothed-particle hydrodynamics
|
||||
(SPH)</a> method.</p>
|
||||
<p>The SPH particles represent the fluid flow. Particles have information about
|
||||
the position, density, and velocity. In every simulation step, they are
|
||||
changed by pressure force, viscosity force, and external force (i.e., gravity).</p>
|
||||
<p>This program reads a text from standard input, and uses it as an initial
|
||||
configuration of the particles. The character <code>#</code> represents a “wall particle” (a
|
||||
particle with a fixed position), and any other non-space characters represent
|
||||
free particles.</p>
|
||||
<p>The compilation options <code>-DG=1 -DP=4 -DV=8</code> represent, respectively, the factor
|
||||
of gravity, pressure, and viscosity. By changing their values, you can see
|
||||
different fluid behavior.</p>
|
||||
<p><a href="http://en.wikipedia.org/wiki/Marching_squares">Marching square</a>-like algorithm
|
||||
is used to render the particles.</p>
|
||||
<h3 id="portability">Portability</h3>
|
||||
<p>The program requires a C99 compiler; it uses <code>complex</code>
|
||||
types and one-line comments. It also uses <code>usleep(3)</code>, which
|
||||
may require <code>-D_BSD_SOURCE</code> or so to build with no warning.
|
||||
Under these conditions, it should be portable. At least, recent
|
||||
compilers with <code>-std=c99 -Wall -W -Wextra -pedantic</code> say
|
||||
<p>The program requires a C99 compiler; it uses <code>complex</code> types and one-line
|
||||
comments. It also uses <code>usleep(3)</code>, which may require <code>-D_BSD_SOURCE</code> or so
|
||||
to build with no warning. Under these conditions, it should be portable.
|
||||
At least, recent compilers with <code>-std=c99 -Wall -W -Wextra -pedantic</code> say
|
||||
nothing.</p>
|
||||
<div class="sourceCode" id="cb17"><pre
|
||||
class="sourceCode sh"><code class="sourceCode bash"><span id="cb17-1"><a href="#cb17-1" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> <span class="at">-DG</span><span class="op">=</span>1 <span class="at">-DP</span><span class="op">=</span>4 <span class="at">-DV</span><span class="op">=</span>8 <span class="at">-D_BSD_SOURCE</span> <span class="at">-std</span><span class="op">=</span>c99 <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> endoh1.c</span>
|
||||
<div class="sourceCode" id="cb17"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb17-1"><a href="#cb17-1" aria-hidden="true" tabindex="-1"></a><span class="fu">gcc</span> <span class="at">-DG</span><span class="op">=</span>1 <span class="at">-DP</span><span class="op">=</span>4 <span class="at">-DV</span><span class="op">=</span>8 <span class="at">-D_BSD_SOURCE</span> <span class="at">-std</span><span class="op">=</span>c99 <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> endoh1.c</span>
|
||||
<span id="cb17-2"><a href="#cb17-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb17-3"><a href="#cb17-3" aria-hidden="true" tabindex="-1"></a><span class="fu">clang</span> <span class="at">-DG</span><span class="op">=</span>1 <span class="at">-DP</span><span class="op">=</span>4 <span class="at">-DV</span><span class="op">=</span>8 <span class="at">-D_BSD_SOURCE</span> <span class="at">-std</span><span class="op">=</span>c99 <span class="at">-Wall</span> <span class="at">-W</span> <span class="at">-Wextra</span> <span class="at">-pedantic</span> endoh1.c</span></code></pre></div>
|
||||
<p>I expect it to work in any Unix-like environment. VTxxx/ANSI
|
||||
sequences are used to clear screen and move cursor to home.</p>
|
||||
<p>I’ve tested with gcc-4.6.3 and clang-3.0 on Linux (Ubuntu 12.04) and
|
||||
gcc-4.5.3 and clang-3.1 on Cygwin. On Cygwin, gcc and clang complain
|
||||
about a usage of <code>I</code> (complex’s imaginary unit), but I bet
|
||||
this is cygwin’s issue; it is surely a C99 feature.</p>
|
||||
<p>I expect it to work in any Unix-like environment. VTxxx/ANSI sequences are
|
||||
used to clear screen and move cursor to home.</p>
|
||||
<p>I’ve tested with gcc-4.6.3 and clang-3.0 on Linux (Ubuntu 12.04)
|
||||
and gcc-4.5.3 and clang-3.1 on Cygwin. On Cygwin, gcc and clang complain about
|
||||
a usage of <code>I</code> (complex’s imaginary unit), but I bet this is cygwin’s issue;
|
||||
it is surely a C99 feature.</p>
|
||||
<h3 id="obfuscation-w-spoiler">Obfuscation w/ Spoiler</h3>
|
||||
<p>First of all, the source code itself serves as an initial
|
||||
configuration. Preprocessing directives (such as
|
||||
<code>#include</code>)’s <code>#</code> serve as walls.</p>
|
||||
<p>This program uses <code>double complex</code> to represent any 2D
|
||||
vector. But, note that the <code>x-axis</code> and <code>y-axis</code>
|
||||
are swapped (real axis = y-axis, imaginary axis = x-axis). The purpose
|
||||
of swapping is not only obfuscation, but also short coding: for example,
|
||||
to add gravity to total force, <code>force += G</code> suffices, rather
|
||||
than <code>force += G*I</code>.</p>
|
||||
<p>(Incidentally, you can exert horizontal gravity by using for instance
|
||||
<code>-DG=I</code>)</p>
|
||||
<p>Every five entries of <code>double complex a[]</code> contain
|
||||
information of one particle: position, wall-flag, density, force, and
|
||||
velocity, in turn.</p>
|
||||
<p>You can use <code>G</code>, <code>P</code>, and <code>V</code> as a
|
||||
guide to find the calculation code of gravity, pressure, and viscosity
|
||||
forces.</p>
|
||||
<p>Though some assignments may look meaningless, they are actually
|
||||
meaningful; they extract “integer part of real part” from a complex
|
||||
value by assigning (and casting) it to an integer-type variable.</p>
|
||||
<p>First of all, the source code itself serves as an initial configuration.
|
||||
Preprocessing directives (such as <code>#include</code>)’s <code>#</code> serve as walls.</p>
|
||||
<p>This program uses <code>double complex</code> to represent any 2D vector. But, note that
|
||||
the <code>x-axis</code> and <code>y-axis</code> are swapped (real axis = y-axis, imaginary axis =
|
||||
x-axis). The purpose of swapping is not only obfuscation, but also short
|
||||
coding: for example, to add gravity to total force, <code>force += G</code> suffices,
|
||||
rather than <code>force += G*I</code>.</p>
|
||||
<p>(Incidentally, you can exert horizontal gravity by using for instance <code>-DG=I</code>)</p>
|
||||
<p>Every five entries of <code>double complex a[]</code> contain information of one particle:
|
||||
position, wall-flag, density, force, and velocity, in turn.</p>
|
||||
<p>You can use <code>G</code>, <code>P</code>, and <code>V</code> as a guide to find the calculation code of
|
||||
gravity, pressure, and viscosity forces.</p>
|
||||
<p>Though some assignments may look meaningless, they are actually meaningful; they
|
||||
extract “integer part of real part” from a complex value by assigning (and
|
||||
casting) it to an integer-type variable.</p>
|
||||
<h3 id="notes-about-additional-files">Notes about Additional Files</h3>
|
||||
<p><a href="logo.txt">logo.txt</a> is a source of the logo in this
|
||||
remark file.</p>
|
||||
<p><a href="column.txt">column.txt</a> is a water column collapse, which
|
||||
is a popular demo of SPH.</p>
|
||||
<p><a href="logo.txt">logo.txt</a> is a source of the logo in this remark file.</p>
|
||||
<p><a href="column.txt">column.txt</a> is a water column collapse, which is a popular demo of SPH.</p>
|
||||
<p><a href="pour-out.txt">pour-out.txt</a> pours you a cup of tea.</p>
|
||||
<p><a href="tanada.txt">tanada.txt</a> simulates “Terrace farming”.
|
||||
(“Tanada” means a “<a
|
||||
href="https://en.wikipedia.org/wiki/Terrace_(earthworks)">terraced rice
|
||||
<p><a href="tanada.txt">tanada.txt</a> simulates “Terrace farming”. (“Tanada” means a “<a href="https://en.wikipedia.org/wiki/Terrace_(earthworks)">terraced rice
|
||||
fields</a>” in Japanese.)</p>
|
||||
<p><a href="clock.txt">clock.txt</a> is a “water” clock created by
|
||||
HAMANO Tsukasa.</p>
|
||||
<p><a href="clock.txt">clock.txt</a> is a “water” clock created by HAMANO Tsukasa.</p>
|
||||
<p>Other <code>*.txt</code> files are from the judges.</p>
|
||||
<p><a href="endoh1_color.c">endoh1_color.c</a> is a variant that shows
|
||||
the density by using terminal 256 colors.</p>
|
||||
<p><a href="endoh1_color.c">endoh1_color.c</a> is a variant that shows the density by using terminal 256
|
||||
colors.</p>
|
||||
<h3 id="acknowledgments">Acknowledgments</h3>
|
||||
<p>I would like to thank my wife <span class="citation"
|
||||
data-cites="hirekoke">@hirekoke</span> for her teaching me the SPH
|
||||
method.</p>
|
||||
<p>The judges <strike>ordered</strike> suggested creating a color
|
||||
version after the contest.</p>
|
||||
<p>The judges and HAMANO Tsukasa (The silver medalist at this IOCCC)
|
||||
kindly provided many configuration files.</p>
|
||||
<h2 id="copyright-and-cc-by-sa-4.0-license">Copyright and CC BY-SA 4.0
|
||||
License:</h2>
|
||||
<p>This file is Copyright (c) 2023 by Landon Curt Noll. All Rights
|
||||
Reserved. You are free to share and adapt this file under the terms of
|
||||
this license:</p>
|
||||
<p>I would like to thank my wife <span class="citation" data-cites="hirekoke">@hirekoke</span> for her teaching me the SPH method.</p>
|
||||
<p>The judges <strike>ordered</strike> suggested creating a color version
|
||||
after the contest.</p>
|
||||
<p>The judges and HAMANO Tsukasa (The silver medalist at this IOCCC) kindly
|
||||
provided many configuration files.</p>
|
||||
<h2 id="copyright-and-cc-by-sa-4.0-license">Copyright and CC BY-SA 4.0 License:</h2>
|
||||
<p>This file is Copyright (c) 2023 by Landon Curt Noll. All Rights Reserved.
|
||||
You are free to share and adapt this file under the terms of this license:</p>
|
||||
<pre><code>Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)</code></pre>
|
||||
<p>For more information, see:
|
||||
https://creativecommons.org/licenses/by-sa/4.0/</p>
|
||||
<p>For more information, see: https://creativecommons.org/licenses/by-sa/4.0/</p>
|
||||
|
||||
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|
||||
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|
||||
|
||||
<!-- START: this line starts content generated by: bin/output-index-inventory.sh -->
|
||||
|
||||
<h1 id="inventory-for-2012endoh1"><a name="inventory"></a>Inventory for
|
||||
2012/endoh1</h1>
|
||||
<h1 id="inventory-for-2012endoh1"><a name="inventory"></a>Inventory for 2012/endoh1</h1>
|
||||
<p><a href="#top">Jump to top</a></p>
|
||||
<h2 id="primary-files">Primary files</h2>
|
||||
<ul>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.c">endoh1.c</a>
|
||||
- entry source</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/Makefile">Makefile</a>
|
||||
- entry Makefile</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.alt.c">endoh1.alt.c</a>
|
||||
- alternative source</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.alt2.c">endoh1.alt2.c</a>
|
||||
- alternate alternative source</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1_color.alt.c">endoh1_color.alt.c</a>
|
||||
- alternative source</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.orig.c">endoh1.orig.c</a>
|
||||
- original source</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/clock.txt">clock.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/column.txt">column.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/column2.txt">column2.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/column3.txt">column3.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/corners.txt">corners.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/dripping-pan.txt">dripping-pan.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/evaporation.txt">evaporation.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/flat.txt">flat.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/fountain.txt">fountain.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/funnel.txt">funnel.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/funnel2.txt">funnel2.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/funnel3.txt">funnel3.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/glass-half-empty.txt">glass-half-empty.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/leidenfrost.txt">leidenfrost.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/logo.txt">logo.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/pour-out.txt">pour-out.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/tanada.txt">tanada.txt</a>
|
||||
- fluid initial state as text</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.alt.bw.sh">try.alt.bw.sh</a>
|
||||
- how to run alternate code in black and white</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.alt.sh">try.alt.sh</a>
|
||||
- how to run alternative code</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.bw.sh">try.bw.sh</a>
|
||||
- try.alt.bw.sh</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.sh">try.sh</a>
|
||||
- how to run in color</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1_color.c">endoh1_color.c</a>
|
||||
- alternative source using terminal 256 colors</li>
|
||||
<li><a href="2012_endoh1.tar.bz2">2012_endoh1.tar.bz2</a> - download
|
||||
entry source</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.c">endoh1.c</a> - entry source</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/Makefile">Makefile</a> - entry Makefile</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.alt.c">endoh1.alt.c</a> - alternative source</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.alt2.c">endoh1.alt2.c</a> - alternate alternative source</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1_color.alt.c">endoh1_color.alt.c</a> - alternative source</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1.orig.c">endoh1.orig.c</a> - original source</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/clock.txt">clock.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/column.txt">column.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/column2.txt">column2.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/column3.txt">column3.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/corners.txt">corners.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/dripping-pan.txt">dripping-pan.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/evaporation.txt">evaporation.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/flat.txt">flat.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/fountain.txt">fountain.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/funnel.txt">funnel.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/funnel2.txt">funnel2.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/funnel3.txt">funnel3.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/glass-half-empty.txt">glass-half-empty.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/leidenfrost.txt">leidenfrost.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/logo.txt">logo.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/pour-out.txt">pour-out.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/tanada.txt">tanada.txt</a> - fluid initial state as text</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.alt.bw.sh">try.alt.bw.sh</a> - how to run alternate code in black and white</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.alt.sh">try.alt.sh</a> - how to run alternative code</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.bw.sh">try.bw.sh</a> - try.alt.bw.sh</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/try.sh">try.sh</a> - how to run in color</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/endoh1_color.c">endoh1_color.c</a> - alternative source using terminal 256 colors</li>
|
||||
<li><a href="2012_endoh1.tar.bz2">2012_endoh1.tar.bz2</a> - download entry source</li>
|
||||
</ul>
|
||||
<h2 id="secondary-files">Secondary files</h2>
|
||||
<ul>
|
||||
<li><a href="index.html">index.html</a> - entry home page</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/.entry.json">.entry.json</a>
|
||||
- description of entry in JSON</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/.gitignore">.gitignore</a>
|
||||
- list of files that should not be committed under git</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/.entry.json">.entry.json</a> - description of entry in JSON</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
|
||||
<li><a href=".path">.path</a> - directory path from top directory</li>
|
||||
<li><a
|
||||
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/README.md">README.md</a>
|
||||
- markdown source for index.html</li>
|
||||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2012/endoh1/README.md">README.md</a> - markdown source for index.html</li>
|
||||
</ul>
|
||||
|
||||
<!-- END: next line ends content generated by: bin/output-index-inventory.sh -->
|
||||
|
||||
Reference in new issue
Block a user