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<!DOCTYPE html>
<html>
<head>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-113300143-1"></script>
<script>
if (document.location.hostname != 'localhost') {
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-113300143-1');
}
</script>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=1280, user-scalable=no">
<title>Intro to WebGL with Three.js</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Source+Code+Pro:ital,wght@0,200..900;1,200..900&family=Source+Sans+3:ital,wght@0,200..900;1,200..900&display=swap" rel="stylesheet">
<!-- Required stylesheet -->
<link rel="stylesheet" href="deck.js/core/deck.core.css">
<!-- Extension CSS files go here. Remove or add as needed. -->
<link rel="stylesheet" media="screen" href="deck.js/extensions/menu/deck.menu.css">
<link rel="stylesheet" media="screen" href="deck.js/extensions/goto/deck.goto.css">
<link rel="stylesheet" media="screen" href="deck.js/extensions/status/deck.status.css">
<link rel="stylesheet" media="screen" href="deck.js/extensions/navigation/deck.navigation.css">
<!-- Style theme. More available in /themes/style/ or create your own. -->
<link rel="stylesheet" media="screen" href="resources/theme.css">
<!-- Transition theme. More available in /themes/transition/ or create your own. -->
<!-- <link rel="stylesheet" media="screen" href="deck.js/themes/transition/fade.css"> -->
<!-- Basic black and white print styles -->
<!-- <link rel="stylesheet" media="print" href="deck.js/core/print.css"> -->
<!-- Required Modernizr file -->
<script src="deck.js/modernizr.custom.js"></script>
</head>
<body class="language-javascript">
<div class="deck-container">
<!-- Begin slides. Just make elements with a class of slide. -->
<section class="slide">
<iframe src="iframes/cube-title.html" frameborder="0"></iframe>
<div class="page-cover">
<h1 class="cover-title">Intro to WebGL<small>with Three.js</small></h1>
</div>
</section>
<section class="slide">
<h2>WebGL</h2>
<p>JavaScript API for rendering interactive 2D and 3D graphics<br>
inside an HTML <code class="language-markup"><canvas></code> element.</p>
<div class="slide">
<h3>Browser Support</h3>
<img src="images/webgl-browser-support.png" alt="">
</div>
</section>
<section class="slide">
<video class="spotlight" src="videos/webgl-demos.mp4"></video>
</section>
<section class="slide">
<iframe src="https://threejs.org/examples/webgl_points_sprites" frameborder="0"></iframe>
</section>
<section class="slide">
<h2>three.js</h2>
<p><a href="https://threejs.org/" target="_blank">threejs.org</a></p>
<p class="slide">3D Javascript Library</p>
<p class="slide">Renderers: WebGL, <canvas>, <svg>, CSS3D / DOM, and more</p>
<p class="slide">Scenes, Cameras, Geometry, 3D Model Loaders, Lights, Materials,<br>Shaders, Particles, Animation, Math Utilities</p>
</section>
<section class="slide">
<!-- <img class="spotlight" src="images/threejs.png" alt=""> -->
<iframe src="https://threejs.org" frameborder="0"></iframe>
<!-- <div class="abs-bc bc-text outline"><a href="https://threejs.org/" style="font-weight: bold; text-decoration: none;" target="_blank">threejs.org</a></div> -->
</section>
<!-- <section class="slide">
<img src="images/300.jpg" alt="" class="spotlight">
</section> -->
<section class="slide">
<iframe src="iframes/getting-started.html" frameborder="0"></iframe>
</section>
<section class="slide">
<pre class="overlay-full language-markup" style="font-size: 23px;"><code style="font-size: 23px;"><!DOCTYPE html>
<html>
<head>
<title>Basic Three.js App</title>
<style>
html, body { margin: 0; padding: 0; overflow: hidden; }
</style>
</head>
<body>
<script type="importmap">
{
"imports": {
"three": "https://cdn.jsdelivr.net/npm/three@<version>/build/three.module.js",
"three/addons/": "https://cdn.jsdelivr.net/npm/three@<version>/examples/jsm/"
}
}
</script>
<script type="module" src="/main.js"></script>
</body>
</html></code></pre>
</section>
<section class="slide" id="scene-required">
<pre class="overlay-full language-none" style="font-size: 23px;">
<code><span class="token keyword">import</span> <span class="token operator">*</span> <span class="token keyword">as</span> <span class="token constant">THREE</span> <span class="token keyword">from</span> <span class="token string">'three'</span><span class="token punctuation">;</span>
<span class="scene-required"><span class="token keyword">var</span> scene <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>Scene</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="token keyword">var</span> aspect <span class="token operator">=</span> window<span class="token punctuation">.</span>innerWidth <span class="token operator">/</span> window<span class="token punctuation">.</span>innerHeight<span class="token punctuation">;</span>
<span class="scene-required"><span class="token keyword">var</span> camera <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>PerspectiveCamera</span><span class="token punctuation">(</span> <span class="token number">75</span><span class="token punctuation">,</span> aspect<span class="token punctuation">,</span> <span class="token number">0.1</span><span class="token punctuation">,</span> <span class="token number">1000</span> <span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> renderer <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>WebGLRenderer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
renderer<span class="token punctuation">.</span><span class="token function">setSize<span class="token punctuation">(</span> </span>window<span class="token punctuation">.</span>innerWidth<span class="token punctuation">,</span> window<span class="token punctuation">.</span>innerHeight <span class="token punctuation">)</span><span class="token punctuation">;</span>
document<span class="token punctuation">.</span>body<span class="token punctuation">.</span><span class="token function">appendChild<span class="token punctuation">(</span> </span>renderer<span class="token punctuation">.</span>domElement <span class="token punctuation">)</span><span class="token punctuation">;</span>
<div class="slide" id="scene-object"><span class="scene-object"><span class="token keyword">var</span> geometry <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>BoxGeometry</span><span class="token punctuation">(</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">1</span> <span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> material <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>MeshNormalMaterial</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> cube <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>Mesh</span><span class="token punctuation">(</span> geometry<span class="token punctuation">,</span> material <span class="token punctuation">)</span><span class="token punctuation">;</span>
scene<span class="token punctuation">.</span><span class="token function">add<span class="token punctuation">(</span></span> cube <span class="token punctuation">)</span><span class="token punctuation">;</span></span>
camera<span class="token punctuation">.</span>position<span class="token punctuation">.</span>z <span class="token operator">=</span> <span class="token number">5</span><span class="token punctuation">;</span></div>
<div class="slide" id="render-loop"><span class="render-loop"><span class="token keyword">function</span> <span class="token function">animate</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
cube<span class="token punctuation">.</span>rotation<span class="token punctuation">.</span>x <span class="token operator">+=</span> <span class="token number">0.1</span><span class="token punctuation">;</span>
cube<span class="token punctuation">.</span>rotation<span class="token punctuation">.</span>y <span class="token operator">+=</span> <span class="token number">0.1</span><span class="token punctuation">;</span>
renderer<span class="token punctuation">.</span><span class="token function">render</span><span class="token punctuation">(</span> scene<span class="token punctuation">,</span> camera <span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span></span>
renderer<span class="token punctuation">.</span><span class="token function">setAnimationLoop</span><span class="token punctuation">(</span> animate <span class="token punctuation">)</span><span class="token punctuation">;</span></div></code></pre>
</section>
<section class="slide">
<h2>Scene Graph</h2>
<img src="images/node-map.png" alt="">
</section>
<section class="slide">
<h2>Object3D</h2>
<pre><code>var group = new THREE.Group();
scene.add( group );
group.add( mesh1 );
group.add( mesh2 );
mesh2.visible = false;
group.remove( mesh2 );
group.children // mesh1
group.parent // scene</code></pre>
<!-- mesh.clone();
mesh.lookAt( scene.position );
THREE.SceneUtils.detach( child, parent, scene );
THREE.SceneUtils.attach( child, scene, parent ); -->
</section>
<section class="slide">
<iframe src="iframes/hierarchy.html" frameborder="0"></iframe>
</section>
<section class="slide instant">
<iframe src="iframes/transforms.html" frameborder="0"></iframe>
<h2>Object3D Transforms</h2>
<div class="temp abs-bc"><pre><code>mesh.position.x = 0</code></pre></div>
<div class="slide temp abs-bc"><pre><code>mesh.position.x = -100</code></pre></div>
<div class="slide temp abs-bc"><pre><code>mesh.scale.set(2,2,2)</code></pre></div>
<div class="slide temp abs-bc"><pre><code>mesh.rotation.y = Math.PI / 4</code></pre></div>
<div class="slide temp abs-bc"><pre><code>mesh.rotation.y = Math.PI * 5 / 4</code></pre></div>
</section>
<section class="slide">
<h2>Unit Circle</h2>
<p class="temp"><img src="images/unit-circle.png" alt=""></p>
<p class="slide"><img src="images/unit-circle-radians.png" alt=""></p>
<div class="slide temp abs-bc"><pre><code>mesh.rotation.y = THREE.Math.degToRad(45);</code></pre></div>
<!-- http://etc.usf.edu/clipart/ -->
<!-- http://etc.usf.edu/clipart/galleries/617-unit-circles -->
</section>
<section class="slide">
<iframe src="iframes/circle-animation.html" frameborder="0" style="z-index: 3;"></iframe>
<h2>Unit Circle</h2>
<p><img src="images/unit-circle-trig.png" alt=""></p>
<div class="slide temp abs-bc">
<pre><code>mesh.position.x = Math.cos( time );
mesh.position.y = Math.sin( time );</code></pre></div>
<div class="slide"></div>
</section>
<section class="slide instant">
<iframe src="iframes/camera.html" frameborder="0" id="camera-demo"></iframe>
<h2 style="position: relative;">Cameras</h2>
<div class="temp abs-bc"><pre><code>cam = new THREE.PerspectiveCamera( fov, aspect, near, far )</code></pre></div>
<div class="slide temp abs-bc"><pre><code>cam = new THREE.PerspectiveCamera( fov, aspect, near, far )</code></pre></div>
<div class="slide temp abs-bc"><pre><code>cam = new THREE.PerspectiveCamera( fov, aspect, near, far )</code></pre></div>
<div class="slide temp abs-bc"><pre><code>camera.fov = 15</code></pre></div>
<div class="slide temp abs-bc"><pre><code>camera.fov = 60</code></pre></div>
<div class="slide temp abs-bc"><pre><code>camera.far = 1000</code></pre></div>
<div class="slide temp abs-bc"><pre><code>camera.far = 3000</code></pre></div>
<div class="slide temp abs-bc"><pre style="font-size: 26px;"><code style="font-size: 26px;">camera = new THREE.OrthographicCamera( left, right, top, bottom, near, far );</code></pre></div>
</section>
<section class="slide">
<!-- <iframe src="https://threejs.org/examples/misc_controls_orbit" frameborder="0"></iframe> -->
<iframe src="iframes/misc_controls_orbit.html" frameborder="0"></iframe>
</section>
<section class="slide">
<h2>Camera Controls</h2>
<p><a href="https://github.com/mrdoob/three.js/blob/dev/examples/jsm/controls/OrbitControls.js" target="_blank">/three.js/examples/jsm/controls/OrbitControls.js</a></p>
<div class="slide temp"><pre style="font-size: 26px;"><code style="font-size: 26px;">import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
controls = new THREE.OrbitControls( camera );
function animate() {
requestAnimationFrame( animate );
controls.update();
renderer.render( scene, camera );
}</code></pre></div>
<div class="slide temp"><pre><code>controls.enablePan = false;
controls.enableZoom = false;
controls.enableRotate = false;
controls.minDistance
controls.maxDistance
controls.minPolarAngle
controls.maxPolarAngle</code></pre></div>
</section>
<section class="slide">
<img class="spotlight" src="images/orbit-all-the-things.jpg" alt="">
</section>
<section class="slide">
<img class="spotlight" src="images/geometry.png" alt="">
<div class="page-cover">
<h1 class="cover-title">Geometry</small></h1>
</div>
</section>
<section class="slide">
<h2>Geometry</h2>
<iframe src="iframes/geometry.html" frameborder="0"></iframe>
<div class="slide temp abs-bc"><pre><code>var geo = new THREE.BoxGeometry( width, height, depth );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var geo = new THREE.SphereGeometry( 60, 24, 16 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var geo = new THREE.CylinderGeometry( ... );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var geo = new THREE.TorusGeometry( ... );</code></pre></div>
</section>
<section class="slide">
<img class="spotlight" src="images/marble.jpg" alt="">
<div class="page-cover">
<h1 class="cover-title cover-inverted">Materials</small></h1>
</div>
</section>
<section class="slide">
<h2>Materials</h2>
<iframe src="iframes/material.html" frameborder="0"></iframe>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshBasicMaterial({ ... });</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshLambertMaterial({ ... });</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshPhongMaterial({ ... });</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshStandardMaterial({ ... });</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshToonMaterial({ ... });</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshNormalMaterial({ ... });</code></pre></div>
<div class="slide temp abs-bc"><pre><code>var material = new THREE.MeshNormalMaterial({ ... });</code></pre></div>
</section>
<section class="slide">
<h2>Material Properties</h2>
<iframe src="iframes/material-options.html" frameborder="0"></iframe>
<div class="temp abs-bc"><pre><code>flatShading: false</code></pre></div>
<div class="slide temp abs-bc"><pre><code>flatShading: true</code></pre></div>
<div class="slide temp abs-bc"><pre><code>flatShading: true // face normals</code></pre></div>
<div class="slide temp abs-bc"><pre><code>flatShading: true // face normals</code></pre></div>
<div class="slide temp abs-bc"><pre><code>flatShading: false // vertex normals</code></pre></div>
<div class="slide temp abs-bc"><pre><code>color: 0xaaaaaa</code></pre></div>
<div class="slide temp abs-bc"><pre><code>color: 0x3794cf</code></pre></div>
<div class="slide temp abs-bc"><pre><code>shininess: 40</code></pre></div>
<div class="slide temp abs-bc"><pre><code>shininess: 80</code></pre></div>
<div class="slide temp abs-bc"><pre><code>wireframe: true</code></pre></div>
<div class="slide temp abs-bc"></div>
<div class="slide temp abs-bc"><pre><code>transparent: true, opacity: 0.5</code></pre></div>
</section>
<div class="slide">
<h2>UVs</h2>
<iframe src="iframes/UVs.html" frameborder="0"></iframe>
<div class="slide"></div>
<div class="slide"></div>
<div class="slide"></div>
</div>
<section class="slide">
<h2>Texture Mapping</h2>
<iframe src="iframes/texture-mapping.html" frameborder="0"></iframe>
<div class="temp abs-bc"><pre><code>var loader = new THREE.TextureLoader();
var texture = loader.load("color-map.jpg");</code></pre></div>
<div class="temp slide abs-bc"><pre><code>map: texture</code></pre></div>
<div class="temp slide abs-bc"><pre><code>normalMap: texture</code></pre></div>
<div class="temp slide abs-bc"><pre><code>specularMap: texture</code></pre></div>
<div class="temp slide abs-bc"><pre><code>map: colorMap, specularMap: specMap, normalMap: normalMap</code></pre></div>
<div class="temp slide abs-bc"><pre><code>var material = new THREE.MeshPhongMaterial({
color: 0xaaaaaa,
specular: 0x333333,
shininess: 15,
map: colorMap,
specularMap: specMap,
normalMap: normalMap
});</code></pre></div>
</section>
<section class="slide">
<img class="spotlight" src="images/sunny-sky.jpg" alt="">
<div class="page-cover">
<h1 class="cover-title cover-inverted">Lights</small></h1>
</div>
</section>
<section class="slide">
<h2>Lights</h2>
<iframe src="iframes/lights.html" frameborder="0"></iframe>
<div class="temp abs-bc"><pre><code>light = new THREE.DirectionalLight( 0xdddddd, 0.8 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.position.set( -80, 80, 80 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.position.x = 80;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.target.position = 160;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.position.x = -80;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.DirectionalLight( 0xdddddd, 0.8 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.DirectionalLight( 0xb4e7f2, 0.8 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.DirectionalLight( 0xb4e7f2, 0.2 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.DirectionalLight( 0xb4e7f2, 1.5 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.DirectionalLight( 0xb4e7f2, 0.8 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.PointLight( 0xb4e7f2, 0.8 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.PointLight( 0xb4e7f2, 0.8 );</code></pre></div>
<!-- <div class="slide temp abs-bc"><pre><code>light.distance = 300;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.distance = 0;</code></pre></div> -->
<div class="slide temp abs-bc"><pre><code>light = new THREE.SpotLight( 0xb4e7f2, 0.8 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.angle = Math.PI / 9;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.angle = Math.PI / 5;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.penumbra = 0.4;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.penumbra = 0;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light.penumbra = 0.8;</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.AmbientLight( 0x444444 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.AmbientLight( 0x000000 );</code></pre></div>
<div class="slide temp abs-bc"><pre><code>light = new THREE.AmbientLight( 0x444444 );</code></pre></div>
</section>
<section class="slide">
<iframe src="iframes/lights-three-point.html" frameborder="0"></iframe>
<h2 style="position: relative;">Three Point Lighting</h2>
<div class="temp abs-bc bc-text outline">Key, Fill, Rim</div>
<div class="slide temp abs-bc bc-text outline">Key, Fill, Rim</div>
</section>
<section class="slide">
<iframe src="iframes/loader.html" frameborder="0"></iframe>
<h2>Model Loader</h2>
<div class="slide temp abs-bc"><pre style="font-size: 30px"><code style="font-size: 30px">import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
const loader = new GLTFLoader();
loader.load("teapot.glb", function( gltf ) {
mesh = gltf.scene.children[0];
mesh.material = new THREE.MeshPhongMaterial();
scene.add( mesh );
});</code></pre></div>
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<div class="page-cover">
<h1 class="cover-title">Interaction</small></h1>
</div>
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<!-- http://stemkoski.github.io/Three.js/Mouse-Over.html -->
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<pre class="overlay-full language-none" style="font-size: 26px;"><code><span class="interaction1"><span class="token comment" spellcheck="true">// normalized device coordinates (-1 to +1)
</span>pointer<span class="token punctuation">.</span>x <span class="token operator">=</span> <span class="token punctuation">(</span> event<span class="token punctuation">.</span>clientX <span class="token operator">/</span> window<span class="token punctuation">.</span>innerWidth <span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span> <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">;</span>
pointer<span class="token punctuation">.</span>y <span class="token operator">=</span> <span class="token operator">-</span> <span class="token punctuation">(</span> event<span class="token punctuation">.</span>clientY <span class="token operator">/</span> window<span class="token punctuation">.</span>innerHeight <span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">;</span></span>
raycaster <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">THREE<span class="token punctuation">.</span>Raycaster</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="interaction2">raycaster<span class="token punctuation">.</span><span class="token function">setFromCamera<span class="token punctuation">(</span></span> pointer<span class="token punctuation">,</span> camera <span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="interaction3"><span class="token keyword">var</span> intersects <span class="token operator">=</span> raycaster<span class="token punctuation">.</span><span class="token function">intersectObjects<span class="token punctuation">(</span></span> scene<span class="token punctuation">.</span>children <span class="token punctuation">)</span><span class="token punctuation">;</span>
INTERSECTED <span class="token operator">=</span> intersects<span class="token punctuation">[</span> <span class="token number">0</span> <span class="token punctuation">]</span><span class="token punctuation">.</span>object<span class="token punctuation">;</span></span></code></pre>
<div class="slide" id="interaction1"></div>
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<h1 class="cover-title">
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<small><a href="https://davidlyons.dev" style="color: #fff; text-shadow: 0 5px 3px rgba(0,0,0,0.7);">davidlyons.dev</a></small>
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<small><a href="https://davidlyons.dev">davidlyons.dev</a></small>
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