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<!DOCTYPE html>
<html>
<head>
<title>Demo Canvas 008</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0; maximum-scale=1.0; user-scalable=0;">
<link rel="stylesheet" media="all" href="../docco.css" />
</head>
<body>
<div id="container">
<div id="background"></div>
<ul id="jump_to">
<li>
<a class="large" href="javascript:void(0);">Jump To …</a>
<a class="small" href="javascript:void(0);">+</a>
<div id="jump_wrapper">
<div id="jump_page_wrapper">
<div id="jump_page">
<a class="source" href="canvas-001.html">
./demo/canvas-001.js
</a>
<a class="source" href="canvas-002.html">
./demo/canvas-002.js
</a>
<a class="source" href="canvas-003.html">
./demo/canvas-003.js
</a>
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./demo/canvas-004.js
</a>
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./demo/canvas-005.js
</a>
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./demo/canvas-006.js
</a>
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./demo/canvas-007.js
</a>
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./demo/canvas-008.js
</a>
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</a>
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./demo/canvas-010.js
</a>
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./demo/canvas-011.js
</a>
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</a>
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./demo/canvas-013.js
</a>
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./demo/canvas-014.js
</a>
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</a>
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./demo/canvas-015a.js
</a>
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</a>
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./demo/canvas-018.js
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</a>
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</a>
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./demo/canvas-020.js
</a>
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</a>
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</a>
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</a>
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./demo/canvas-032.js
</a>
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./demo/canvas-033.js
</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
<a class="source" href="canvas-045.html">
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</a>
<a class="source" href="canvas-046.html">
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</a>
<a class="source" href="canvas-047.html">
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</a>
<a class="source" href="canvas-048.html">
./demo/canvas-048.js
</a>
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</a>
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</a>
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</a>
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</a>
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</a>
<a class="source" href="filters-001.html">
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</a>
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</a>
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</a>
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<a class="source" href="filters-101.html">
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./demo/filters-502.js
</a>
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</a>
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./demo/filters-504.js
</a>
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./demo/filters-505.js
</a>
<a class="source" href="mediapipe-001.html">
./demo/mediapipe-001.js
</a>
<a class="source" href="mediapipe-002.html">
./demo/mediapipe-002.js
</a>
<a class="source" href="mediapipe-003.html">
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</a>
<a class="source" href="modules-001.html">
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
<a class="source" href="particles-001.html">
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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</a>
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./demo/tensorflow-001.js
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./demo/utilities.js
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<ul class="sections">
<li id="section-1">
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<a class="ss" href="#section-1">§</a>
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<h1 id="demo-canvas-008">Demo Canvas 008</h1>
<p>Picture entity position; manipulate copy attributes</p>
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<p><a href="../../demo/canvas-008.html">Run code</a></p>
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<div class="content"><div class='highlight'><pre><span class="hljs-keyword">import</span> {
importDomImage,
library <span class="hljs-keyword">as</span> L,
makePicture,
makeRender,
makeUpdater,
} <span class="hljs-keyword">from</span> <span class="hljs-string">'../source/scrawl.js'</span>
<span class="hljs-keyword">import</span> { reportSpeed } <span class="hljs-keyword">from</span> <span class="hljs-string">'./utilities.js'</span>;</pre></div></div>
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<h4 id="scene-setup">Scene setup</h4>
<p>Get a handle to the Canvas wrapper</p>
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<div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> canvas = L.<span class="hljs-property">artefact</span>.<span class="hljs-property">mycanvas</span>;</pre></div></div>
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<p>Namespacing boilerplate</p>
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<div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> namespace = <span class="hljs-string">'demo'</span>;
<span class="hljs-keyword">const</span> <span class="hljs-title function_">name</span> = (<span class="hljs-params">n</span>) => <span class="hljs-string">`<span class="hljs-subst">${namespace}</span>-<span class="hljs-subst">${n}</span>`</span>;</pre></div></div>
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<p>Import image from DOM, and create Picture entity using it</p>
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<div class="content"><div class='highlight'><pre><span class="hljs-title function_">importDomImage</span>(<span class="hljs-string">'.flowers'</span>);
<span class="hljs-keyword">const</span> piccy = <span class="hljs-title function_">makePicture</span>({
<span class="hljs-attr">name</span>: <span class="hljs-title function_">name</span>(<span class="hljs-string">'myFlower'</span>),
<span class="hljs-attr">asset</span>: <span class="hljs-string">'iris'</span>,
<span class="hljs-attr">width</span>: <span class="hljs-number">200</span>,
<span class="hljs-attr">height</span>: <span class="hljs-number">200</span>,
<span class="hljs-attr">startX</span>: <span class="hljs-number">300</span>,
<span class="hljs-attr">startY</span>: <span class="hljs-number">200</span>,
<span class="hljs-attr">handleX</span>: <span class="hljs-number">100</span>,
<span class="hljs-attr">handleY</span>: <span class="hljs-number">100</span>,
<span class="hljs-attr">copyWidth</span>: <span class="hljs-number">200</span>,
<span class="hljs-attr">copyHeight</span>: <span class="hljs-number">200</span>,
<span class="hljs-attr">copyStartX</span>: <span class="hljs-number">100</span>,
<span class="hljs-attr">copyStartY</span>: <span class="hljs-number">100</span>,
<span class="hljs-attr">lineWidth</span>: <span class="hljs-number">10</span>,
<span class="hljs-attr">strokeStyle</span>: <span class="hljs-string">'gold'</span>,
<span class="hljs-attr">order</span>: <span class="hljs-number">1</span>,
<span class="hljs-attr">method</span>: <span class="hljs-string">'drawAndFill'</span>,
});</pre></div></div>
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<p>Create a second Picture entity, this time pulling in the image dynamically</p>
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<div class="content"><div class='highlight'><pre>piccy.<span class="hljs-title function_">clone</span>({
<span class="hljs-attr">name</span>: <span class="hljs-title function_">name</span>(<span class="hljs-string">'myFactory'</span>),
<span class="hljs-attr">imageSource</span>: <span class="hljs-string">'img/canalFactory-800.webp'</span>,
<span class="hljs-attr">width</span>: <span class="hljs-number">600</span>,
<span class="hljs-attr">height</span>: <span class="hljs-number">400</span>,
<span class="hljs-attr">startX</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">startY</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">handleX</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">handleY</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">copyWidth</span>: <span class="hljs-number">600</span>,
<span class="hljs-attr">copyHeight</span>: <span class="hljs-number">400</span>,
<span class="hljs-attr">copyStartX</span>: <span class="hljs-number">150</span>,
<span class="hljs-attr">copyStartY</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">order</span>: <span class="hljs-number">0</span>,
<span class="hljs-attr">method</span>: <span class="hljs-string">'fill'</span>,
});</pre></div></div>
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<h4 id="scene-animation">Scene animation</h4>
<p>Function to display frames-per-second data, and other information relevant to the demo</p>
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<div class="content"><div class='highlight'><pre><span class="hljs-keyword">const</span> report = <span class="hljs-title function_">reportSpeed</span>(<span class="hljs-string">'#reportmessage'</span>, <span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) {</pre></div></div>
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