4 <title>Sixth 3D engine demos</title>
5 <!-- 2018-06-22 Fri 02:53 -->
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198 <div class="row"><div class="col-md-9"><h1 class="title">Sixth 3D engine demos</h1>
201 <li>This is a subproject of <a href="http://www3.svjatoslav.eu/projects/sixth-3d/">Sixth 3D</a> which in turn is a subproject of
202 <a href="http://www3.svjatoslav.eu/projects/sixth/">Sixth</a>.
205 <li>Clone GIT repository using command:
206 <pre class="example">
207 git clone http://www2.svjatoslav.eu/git/sixth-3d-demos.git
211 <li><a href="http://www2.svjatoslav.eu/gitweb/?p=sixth-3d-demos.git;a=snapshot;h=HEAD;sf=tgz">Download latest snapshot in TAR GZ format</a>
214 <li>This program is free software: you can redistribute it and/or modify
215 it under the terms of the <a href="https://www.gnu.org/licenses/lgpl.html">GNU Lesser General Public License</a> as
216 published by the Free Software Foundation, either version 3 of the
217 License, or (at your option) any later version.
222 <li>Svjatoslav Agejenko
224 <li>Homepage: <a href="http://svjatoslav.eu">http://svjatoslav.eu</a>
226 <li>Email: <a href="mailto://svjatoslav@svjatoslav.eu">mailto://svjatoslav@svjatoslav.eu</a>
231 <li><a href="http://www.svjatoslav.eu/projects/">Other software projects hosted at svjatoslav.eu</a>
235 <div id="outline-container-sec-1" class="outline-2">
236 <h2 id="sec-1"><span class="section-number-2">1</span> Overview</h2>
237 <div class="outline-text-2" id="text-1">
239 Goal of this project is to show off capabilities and API usage of
240 <a href="http://www3.svjatoslav.eu/projects/sixth-3d/">Sixth 3D</a> engine.
244 All sample scenes below are rendered at interactive framerates.
248 <div id="outline-container-sec-2" class="outline-2">
249 <h2 id="sec-2"><span class="section-number-2">2</span> Navigating in space</h2>
250 <div class="outline-text-2" id="text-2">
251 <table class="table table-striped table-bordered table-hover table-condensed">
261 <th scope="col" class="text-left">key</th>
262 <th scope="col" class="text-left">result</th>
267 <td class="text-left">cursor keys</td>
268 <td class="text-left">move: left, right, forward, backward</td>
272 <td class="text-left">mouse scroll wheel</td>
273 <td class="text-left">move: up, down</td>
277 <td class="text-left">dragging with mouse</td>
278 <td class="text-left">look around</td>
285 <div id="outline-container-sec-3" class="outline-2">
286 <h2 id="sec-3"><span class="section-number-2">3</span> Samples</h2>
287 <div class="outline-text-2" id="text-3">
288 </div><div id="outline-container-sec-3-1" class="outline-3">
289 <h3 id="sec-3-1"><span class="section-number-3">3.1</span> Raytracing through voxels</h3>
290 <div class="outline-text-3" id="text-3-1">
293 <p><img src="screenshots/raytracing fractal in voxel polygon hybrid scene.png" class="img-responsive" alt="raytracing fractal in voxel polygon hybrid scene.png">
298 Test scene that is generated simultaneously using:
301 <li>conventional polygons
303 <li>for realtime navigation, and
309 <li>for on-demand raytracing
316 Instead of storing voxels in dumb [X * Y * Z] array, dynamically
317 partitioned <a href="https://en.wikipedia.org/wiki/Octree">octree</a> is used to compress data. Press "r" key anywhere in
318 the scene to raytrace current view through compressed voxel
324 <div id="outline-container-sec-3-2" class="outline-3">
325 <h3 id="sec-3-2"><span class="section-number-3">3.2</span> Conway's Game of Life</h3>
326 <div class="outline-text-3" id="text-3-2">
328 The Game of Life, also known simply as Life, is a cellular automaton
329 devised by the British mathematician John Horton Conway in 1970.
333 <li><a href="https://en.wikipedia.org/wiki/Conway's_Game_of_Life">https://en.wikipedia.org/wiki/Conway's_Game_of_Life</a>
337 <li>2 cell states: alive / dead
339 <li>Each cell sees 8 neighboring cells.
341 <li>If alive cell neighbors count is 2 or 3, then cell survives,
344 <li>Dead cell becomes alive if neighbors count is exactly 3.
354 <p><img src="screenshots/life.png" class="img-responsive" alt="life.png">
359 Current application projects 2D game grid/matrix onto three
360 dimensional space. Extra dimension (height) is used to visualize
361 history (previous iterations) using glowing dots suspended in space.
367 <table class="table table-striped table-bordered table-hover table-condensed">
377 <th scope="col" class="text-left">key</th>
378 <th scope="col" class="text-left">result</th>
383 <td class="text-left">mouse click on the cell (cell)</td>
384 <td class="text-left">toggles cell state</td>
388 <td class="text-left"><space></td>
389 <td class="text-left">next iteration</td>
393 <td class="text-left">ENTER</td>
394 <td class="text-left">next iteeration with the history</td>
398 <td class="text-left">"c"</td>
399 <td class="text-left">clear the matrix</td>
406 <div id="outline-container-sec-3-3" class="outline-3">
407 <h3 id="sec-3-3"><span class="section-number-3">3.3</span> Text editors</h3>
408 <div class="outline-text-3" id="text-3-3">
411 <p><img src="screenshots/text editors.png" class="img-responsive" alt="text editors.png">
416 Initial test for creating user interfaces in 3D and:
419 <li>window focus handling
421 <li>picking objecs using mouse
423 <li>redirecting keyboard input to focused window
429 Window focus acts like a stack.
433 When window is clicked with the mouse, previously focused window (if
434 any) is pushed to the focus stack and new window receives focus. Red
435 frame appears around the window to indicate this.
439 When ESC key is pressed, window focus is returned to previous window
444 When any window is focused, all keyboard input is redirected to that
445 window, including cursor keys. To be able to navigate around the world
446 again, window must be unfocused first using ESC key.
453 <li>Improve focus handling:
455 <li>Perhaps add shortcut to navigate world without exiting entire
458 <li>Possibility to retain and reuse recently focused elements.
460 <li>Store user location in the world and view direction with the
461 focused window. So that when returning focus to far away object,
462 user is redirected also to proper location in the world.
466 <li>Possibility to store recently visited locations in the world and
474 <div id="outline-container-sec-3-4" class="outline-3">
475 <h3 id="sec-3-4"><span class="section-number-3">3.4</span> Mathematical formulas</h3>
476 <div class="outline-text-3" id="text-3-4">
479 <p><img src="screenshots/mathematical formulas.png" class="img-responsive" alt="mathematical formulas.png">
484 <li>TODO: instead of projecting 2D visualizations onto 3D space,
485 visualize some formula using all 3 dimensions avaliable.
490 <div id="outline-container-sec-3-5" class="outline-3">
491 <h3 id="sec-3-5"><span class="section-number-3">3.5</span> Sinus heightmaps and sphere</h3>
492 <div class="outline-text-3" id="text-3-5">
495 <p><img src="screenshots/sinus heightmaps and sphere.png" class="img-responsive" alt="sinus heightmaps and sphere.png">
500 Simple test scene. Easy to implement and looks nice.
505 </div><div class="col-md-3"><nav id="table-of-contents">
506 <div id="text-table-of-contents" class="bs-docs-sidebar">
508 <li><a href="#sec-1">1. Overview</a></li>
509 <li><a href="#sec-2">2. Navigating in space</a></li>
510 <li><a href="#sec-3">3. Samples</a>
512 <li><a href="#sec-3-1">3.1. Raytracing through voxels</a></li>
513 <li><a href="#sec-3-2">3.2. Conway's Game of Life</a></li>
514 <li><a href="#sec-3-3">3.3. Text editors</a></li>
515 <li><a href="#sec-3-4">3.4. Mathematical formulas</a></li>
516 <li><a href="#sec-3-5">3.5. Sinus heightmaps and sphere</a></li>
523 <footer id="postamble" class="">
524 <div><p class="author">Author: Svjatoslav Agejenko</p>
525 <p class="date">Created: 2018-06-22 Fri 02:53</p>
526 <p class="creator"><a href="http://www.gnu.org/software/emacs/">Emacs</a> 25.1.1 (<a href="http://orgmode.org">Org-mode</a> 8.2.10)</p>