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<title>Sixth 3D - 3D engine</title>
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</head>
<body>
-<div id="content" class="container">
-<div class="row"><div class="col-md-9"><h1 class="title">Sixth 3D - 3D engine</h1>
+<div id="content" class="content">
+<h1 class="title">Sixth 3D - 3D engine</h1>
+<div id="table-of-contents" role="doc-toc">
+<h2>Table of Contents</h2>
+<div id="text-table-of-contents" role="doc-toc">
+<ul>
+<li><a href="#org4be6df3">1. General</a>
+<ul>
+<li><a href="#org12afa0c">1.1. Source code</a></li>
+</ul>
+</li>
+<li><a href="#org97fb9d0">2. Project description</a>
+<ul>
+<li><a href="#orge702afc">2.1. Justification for software rendering</a></li>
+<li><a href="#orgc55629c">2.2. Justification for Java</a></li>
+</ul>
+</li>
+<li><a href="#org0cf9612">3. API documentation</a></li>
+<li><a href="#orga3215f4">4. Instructions to embed Sixth-3D in your project</a></li>
+<li><a href="#orgbfe98c3">5. <span class="todo TODO">TODO</span> features to add</a>
+<ul>
+<li><a href="#orgac1820b">5.1. Render only visible polygons</a></li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
-<div id="outline-container-sec-1" class="outline-2">
-<h2 id="sec-1"><span class="section-number-2">1</span> General</h2>
+<div id="outline-container-org4be6df3" class="outline-2">
+<h2 id="org4be6df3"><span class="section-number-2">1.</span> General</h2>
<div class="outline-text-2" id="text-1">
<ul class="org-ul">
<li>This program is free software: released under Creative Commons Zero
-(CC0) license
-</li>
+(CC0) license</li>
<li>Program author:
<ul class="org-ul">
-<li>Svjatoslav Agejenko
-</li>
-<li>Homepage: <a href="https://svjatoslav.eu">https://svjatoslav.eu</a>
-</li>
-<li>Email: <a href="mailto://svjatoslav@svjatoslav.eu">mailto://svjatoslav@svjatoslav.eu</a>
-</li>
-</ul>
-</li>
+<li>Svjatoslav Agejenko</li>
+<li>Homepage: <a href="https://svjatoslav.eu">https://svjatoslav.eu</a></li>
+<li>Email: <a href="mailto://svjatoslav@svjatoslav.eu">mailto://svjatoslav@svjatoslav.eu</a></li>
+</ul></li>
-<li><a href="https://www.svjatoslav.eu/projects/">Other software projects hosted at svjatoslav.eu</a>
-</li>
+<li><a href="https://www.svjatoslav.eu/projects/">Other software projects hosted at svjatoslav.eu</a></li>
</ul>
</div>
-<div id="outline-container-sec-1-1" class="outline-3">
-<h3 id="sec-1-1"><span class="section-number-3">1.1</span> Source code</h3>
+<div id="outline-container-org12afa0c" class="outline-3">
+<h3 id="org12afa0c"><span class="section-number-3">1.1.</span> Source code</h3>
<div class="outline-text-3" id="text-1-1">
<ul class="org-ul">
-<li><a href="https://www2.svjatoslav.eu/gitweb/?p=sixth-3d.git;a=snapshot;h=HEAD;sf=tgz">Download latest snapshot in TAR GZ format</a>
-</li>
+<li><a href="https://www2.svjatoslav.eu/gitweb/?p=sixth-3d.git;a=snapshot;h=HEAD;sf=tgz">Download latest snapshot in TAR GZ format</a></li>
-<li><a href="https://www2.svjatoslav.eu/gitweb/?p=sixth-3d.git;a=summary">Browse Git repository online</a>
-</li>
+<li><a href="https://www2.svjatoslav.eu/gitweb/?p=sixth-3d.git;a=summary">Browse Git repository online</a></li>
-<li>Clone Git repository using command:
+<li><p>
+Clone Git repository using command:
+</p>
<pre class="example">
git clone https://www2.svjatoslav.eu/git/sixth-3d.git
+</pre></li>
-</pre>
-</li>
-
-<li>See <a href="https://www3.svjatoslav.eu/projects/sixth-3d/apidocs/">JavaDoc</a>.
-</li>
+<li>See <a href="https://www3.svjatoslav.eu/projects/sixth-3d/apidocs/">JavaDoc</a>.</li>
</ul>
</div>
</div>
</div>
-<div id="outline-container-sec-2" class="outline-2">
-<h2 id="sec-2"><span class="section-number-2">2</span> Project description</h2>
+<div id="outline-container-org97fb9d0" class="outline-2">
+<h2 id="org97fb9d0"><span class="section-number-2">2.</span> Project description</h2>
<div class="outline-text-2" id="text-2">
<ul class="org-ul">
-<li>See: <a href="https://www3.svjatoslav.eu/projects/sixth-3d-demos/">demos of current 3D engine capabilities</a>
-</li>
+<li>See: <a href="https://www3.svjatoslav.eu/projects/sixth-3d-demos/">demos of current 3D engine capabilities</a></li>
</ul>
<p>
-<a href="#sec-2-1">In software</a>, <a href="#sec-2-2">pure Java</a> realtime 3D rendering engine. With the final
+<a href="#orge702afc">In software</a>, <a href="#orgc55629c">pure Java</a> realtime 3D rendering engine. With the final
goal of becoming a platform for buildng 3D user interfaces and
interactive data visualization for <a href="https://www3.svjatoslav.eu/projects/sixth/">project Sixth</a>.
</p>
<p>
-Sixth 3D can be also used as standalone <a href="#sec-4">3D engine in your project</a>.
+Sixth 3D can be also used as standalone <a href="#orga3215f4">3D engine in your project</a>.
</p>
</div>
-<div id="outline-container-sec-2-1" class="outline-3">
-<h3 id="sec-2-1"><a id="ID-d03013e5-931b-40ca-bc4b-e4b3f23b9a4e" name="ID-d03013e5-931b-40ca-bc4b-e4b3f23b9a4e"></a><span class="section-number-3">2.1</span> Justification for software rendering</h3>
+<div id="outline-container-orge702afc" class="outline-3">
+<h3 id="orge702afc"><span class="section-number-3">2.1.</span> Justification for software rendering</h3>
<div class="outline-text-3" id="text-2-1">
<p>
3D rendering is done in software, 100% pure Java on CPU. At least for
</p>
</div>
</div>
-<div id="outline-container-sec-2-2" class="outline-3">
-<h3 id="sec-2-2"><a id="ID-a11f7150-1b25-4ca4-a3c3-8c8bd1352bd4" name="ID-a11f7150-1b25-4ca4-a3c3-8c8bd1352bd4"></a><span class="section-number-3">2.2</span> Justification for Java</h3>
+<div id="outline-container-orgc55629c" class="outline-3">
+<h3 id="orgc55629c"><span class="section-number-3">2.2.</span> Justification for Java</h3>
<div class="outline-text-3" id="text-2-2">
<ul class="org-ul">
-<li>It is easy to refactor and experiment with.
-</li>
+<li>It is easy to refactor and experiment with.</li>
<li>Easy portability and installation. No need to deal with platform
-specific dependencies.
-</li>
+specific dependencies.</li>
<li>It scales well to handle great complexity.
<ul class="org-ul">
<li>Allows to implement clever performance optimizations (instead of
-going for GPU offered brute-force rendering approach).
-</li>
-</ul>
-</li>
+going for GPU offered brute-force rendering approach).</li>
+</ul></li>
<li>No limitations imposed by:
<ul class="org-ul">
-<li>requirement for decent GPU
-</li>
-<li>GPU missing features
-</li>
-<li>GPU missing/incomplete/buggy drivers
-</li>
-<li>OpenGL specification
-</li>
-</ul>
-</li>
+<li>requirement for decent GPU</li>
+<li>GPU missing features</li>
+<li>GPU missing/incomplete/buggy drivers</li>
+<li>OpenGL specification</li>
+</ul></li>
<li>It is fast enough thanks to:
<ul class="org-ul">
-<li>Java virtual machine just-in-time compiler.
-</li>
-<li>Growing CPU cores count.
-</li>
-</ul>
-</li>
+<li>Java virtual machine just-in-time compiler.</li>
+<li>Growing CPU cores count.</li>
+</ul></li>
<li>As a result it is easy to run on various hardware platforms and
-operating systems.
-</li>
+operating systems.</li>
</ul>
</div>
</div>
</div>
-<div id="outline-container-sec-3" class="outline-2">
-<h2 id="sec-3"><span class="section-number-2">3</span> API documentation</h2>
+<div id="outline-container-org0cf9612" class="outline-2">
+<h2 id="org0cf9612"><span class="section-number-2">3.</span> API documentation</h2>
<div class="outline-text-2" id="text-3">
<ul class="org-ul">
-<li>See <a href="https://www3.svjatoslav.eu/projects/sixth-3d/apidocs/">JavaDoc</a>.
-</li>
+<li>See <a href="https://www3.svjatoslav.eu/projects/sixth-3d/apidocs/">JavaDoc</a>.</li>
</ul>
<p>
So far best resource is to download and explore source code for:
</p>
<ul class="org-ul">
-<li>3D engine (<a href="https://www3.svjatoslav.eu/projects/sixth-3d/graphs/">generated code graphs</a> (generated using <a href="https://www3.svjatoslav.eu/projects/javainspect/">JavaInspect</a>))
-</li>
-<li>For API usage examples, see <a href="https://www3.svjatoslav.eu/projects/sixth-3d-demos/">demos</a>
-</li>
+<li>3D engine (<a href="https://www3.svjatoslav.eu/projects/sixth-3d/graphs/">generated code graphs</a> (generated using <a href="https://www3.svjatoslav.eu/projects/javainspect/">JavaInspect</a>))</li>
+<li>For API usage examples, see <a href="https://www3.svjatoslav.eu/projects/sixth-3d-demos/">demos</a></li>
</ul>
</div>
</div>
-<div id="outline-container-sec-4" class="outline-2">
-<h2 id="sec-4"><a id="ID-08f71987-90af-40dc-bb65-bac87db9e652" name="ID-08f71987-90af-40dc-bb65-bac87db9e652"></a><span class="section-number-2">4</span> Instructions to embed Sixth-3D in your project</h2>
+<div id="outline-container-orga3215f4" class="outline-2">
+<h2 id="orga3215f4"><span class="section-number-2">4.</span> Instructions to embed Sixth-3D in your project</h2>
<div class="outline-text-2" id="text-4">
<p>
Maven <b>pom.xml</b> file snippet:
</p>
<div class="org-src-container">
-
<pre class="src src-xml"><<span style="color: #A6E22E;">dependencies</span>>
...
<<span style="color: #A6E22E;">dependency</span>>
</p>
</div>
</div>
-<div id="outline-container-sec-5" class="outline-2">
-<h2 id="sec-5"><span class="section-number-2">5</span> <span class="label label-primary TODO">TODO</span> features to add</h2>
+<div id="outline-container-orgbfe98c3" class="outline-2">
+<h2 id="orgbfe98c3"><span class="section-number-2">5.</span> <span class="todo TODO">TODO</span> features to add</h2>
<div class="outline-text-2" id="text-5">
<ul class="org-ul">
<li>read this as example, and apply improvements/fixes where applicable:
-<a href="http://blog.rogach.org/2015/08/how-to-create-your-own-simple-3d-render.html">http://blog.rogach.org/2015/08/how-to-create-your-own-simple-3d-render.html</a>
-</li>
+<a href="http://blog.rogach.org/2015/08/how-to-create-your-own-simple-3d-render.html">http://blog.rogach.org/2015/08/how-to-create-your-own-simple-3d-render.html</a></li>
+
+<li>Improve triangulation. Read: <a href="https://ianthehenry.com/posts/delaunay/">https://ianthehenry.com/posts/delaunay/</a></li>
<li>Partial region/frame repaint: when only one small object changed on
-the scene, it would be faster to re-render that specific area.
-</li>
+the scene, it would be faster to re-render that specific area.</li>
<li>Once partial rendering works, in would be easy to add multi-core
rendering support. So that each core renders it's own region of the
-screen.
-</li>
+screen.</li>
<li>Antialiazing. Would improve text readability. If antialiazing is too
expensive for every frame, it could be used only for last frame
-before animations become still and waiting for user input starts.
-</li>
+before animations become still and waiting for user input starts.</li>
</ul>
</div>
-<div id="outline-container-sec-5-1" class="outline-3">
-<h3 id="sec-5-1"><span class="section-number-3">5.1</span> Render only visible polygons</h3>
+<div id="outline-container-orgac1820b" class="outline-3">
+<h3 id="orgac1820b"><span class="section-number-3">5.1.</span> Render only visible polygons</h3>
<div class="outline-text-3" id="text-5-1">
<ul class="org-ul">
-<li>This would significantly reduce RAM <-> CPU traffic.
-</li>
+<li>This would significantly reduce RAM <-> CPU traffic.</li>
<li>General algorithm description:
<ul class="org-ul">
<li>For each horizontal scanline:
<ul class="org-ul">
-<li>sort polygon edges from left to right
-</li>
+<li>sort polygon edges from left to right</li>
<li>while iterating and drawing pixels over screen X axis (left to
right) track next appearing/disappearing polygons.
<ul class="org-ul">
-<li>For each polygon edge update Z sorted active polygons list.
-</li>
+<li>For each polygon edge update Z sorted active polygons list.</li>
<li>Only draw pixel from the top-most polygon.
<ul class="org-ul">
<li>Only if polygon area is transparent/half-transparent add
-colors from the polygons below.
-</li>
-</ul>
-</li>
-</ul>
-</li>
-</ul>
-</li>
-</ul>
-</li>
+colors from the polygons below.</li>
+</ul></li>
+</ul></li>
+</ul></li>
+</ul></li>
<li>As a bonus, this would allow to track which polygons are really
visible in the final scene for each frame.
<li>Dynamic geometry simplification:
<ul class="org-ul">
<li>Dynamically detect and replace invisible objects from the
-scene with simplified bounding box.
-</li>
+scene with simplified bounding box.</li>
<li>Dynamically replace boudnig box with actual object once it
-becomes visible.
-</li>
-</ul>
-</li>
+becomes visible.</li>
+</ul></li>
-<li>Dynamically unload unused textures from RAM.
-</li>
-</ul>
-</li>
-</ul>
-</li>
+<li>Dynamically unload unused textures from RAM.</li>
+</ul></li>
+</ul></li>
</ul>
</div>
</div>
</div>
-</div><div class="col-md-3"><nav id="table-of-contents">
-<div id="text-table-of-contents" class="bs-docs-sidebar">
-<ul class="nav">
-<li><a href="#sec-1">1. General</a>
-<ul class="nav">
-<li><a href="#sec-1-1">1.1. Source code</a></li>
-</ul>
-</li>
-<li><a href="#sec-2">2. Project description</a>
-<ul class="nav">
-<li><a href="#sec-2-1">2.1. Justification for software rendering</a></li>
-<li><a href="#sec-2-2">2.2. Justification for Java</a></li>
-</ul>
-</li>
-<li><a href="#sec-3">3. API documentation</a></li>
-<li><a href="#sec-4">4. Instructions to embed Sixth-3D in your project</a></li>
-<li><a href="#sec-5">5. features to add</a>
-<ul class="nav">
-<li><a href="#sec-5-1">5.1. Render only visible polygons</a></li>
-</ul>
-</li>
-</ul>
</div>
-</nav>
-</div></div></div>
-<footer id="postamble" class="">
-<div><p class="author">Author: Svjatoslav Agejenko</p>
-<p class="date">Created: 2021-01-10 P 01:14</p>
-<p class="creator"><a href="http://www.gnu.org/software/emacs/">Emacs</a> 26.1 (<a href="http://orgmode.org">Org-mode</a> 9.1.9)</p>
+<div id="postamble" class="status">
+<p class="author">Author: Svjatoslav Agejenko</p>
+<p class="date">Created: 2022-07-13 Wed 03:46</p>
+<p class="validation"><a href="https://validator.w3.org/check?uri=referer">Validate</a></p>
</div>
-</footer>
</body>
</html>
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