scrawl-canvas
Version:
Version 8.9.4 - 19 Nov 2022
104 lines (81 loc) • 4.15 kB
HTML
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Demo DOM 013</title>
<link href="css/normalize.css" rel="stylesheet" />
<link href="css/tests.css" rel="stylesheet" />
<style>
#mystack {
border-width: 0;
margin: 0 auto;
overflow: hidden;
width: 600px;
height: 600px;
}
.controls {
grid-template-columns: 1fr 2fr 2fr 1fr 2fr 2fr;
}
</style>
</head>
<body>
<h1><a href="index.html">Scrawl-canvas v8</a> - DOM test 013</h1>
<h2>Track mouse movements over a 3d rotated and scaled canvas element</h2>
<div class="controls">
<div class="green label">Start</div>
<div class="green">X: <input class="controlItem" id="start_xAbsolute" type="range" value="300" min="0" max="600" step="1" /></div>
<div class="green">Y: <input class="controlItem" id="start_yAbsolute" type="range" value="300" min="0" max="600" step="1" /></div>
<div class="green label">Dimensions</div>
<div class="green">W: <input class="controlItem" id="width" type="range" value="400" min="0" max="600" step="10" /></div>
<div class="green">H: <input class="controlItem" id="height" type="range" value="400" min="0" max="600" step="10" /></div>
<div class="green label">Handles</div>
<div class="green">X: <input class="controlItem" id="handle_xAbsolute" type="range" value="200" min="-200" max="600" step="1" /></div>
<div class="green">Y: <input class="controlItem" id="handle_yAbsolute" type="range" value="200" min="-200" max="600" step="1" /></div>
<div class="green label">Offset</div>
<div class="green">X: <input class="controlItem" id="offset_xAbsolute" type="range" value="0" min="-200" max="200" step="1" /></div>
<div class="green">Y: <input class="controlItem" id="offset_yAbsolute" type="range" value="0" min="-200" max="200" step="1" /></div>
<div class="yellow label">Roll</div>
<div class="yellow"><input class="controlItem" id="roll" type="range" value="0" min="0" max="360" step="1" /></div>
<div class="yellow"> </div>
<div class="yellow label">Pitch</div>
<div class="yellow"><input class="controlItem" id="pitch" type="range" value="0" min="0" max="360" step="1" /></div>
<div class="yellow"> </div>
<div class="yellow label">Yaw</div>
<div class="yellow"><input class="controlItem" id="yaw" type="range" value="0" min="0" max="360" step="1" /></div>
<div class="yellow"> </div>
<div class="yellow label">Scale</div>
<div class="yellow"><input class="controlItem" id="scale" type="range" value="1" min="0.2" max="2" step="0.02" /></div>
<div class="yellow"> </div>
</div>
<div id="mystack" data-scrawl-stack>
<canvas
id="mycanvas"
width="400"
height="400"
data-scrawl-canvas
data-base-background-color="beige"
></canvas>
</div>
<p id="reportmessage"></p>
<div class="testinfo">
<h4>Test purpose</h4>
<ul>
<li>Create a Scrawl-canvas stack <div>, containing a <canvas> element.</li>
<li>Set the canvas so that it uses a local mouse tracking function</li>
<li>Add a Wheel entity to the canvas, which will track the mouse cursor's position</li>
<li>Add a second Wheel entity whose position we shall manually update so that it matches the mouse event object's `offsetX` and `offsetY` values</li>
<li>Position and rotate the canvas within the stack, checking repeatedly that both Wheel entitys continue to track the mouse cursor position</li>
</ul>
<h4>Known issues</h4>
<ul>
<li>Resizing the canvas (dimensions attributes) will lead to positioning failures.</li>
<li>Touch positioning is (often) returning 'NaN' for both canvas.here and canvas.base.here on Android browser - needs investigating.</li>
</ul>
<p><b>Touch test:</b> should work as expected</p>
<p><a href="../docs/demo/dom-013.html">Annotated code</a></p>
</div>
<script src="dom-013.js" type="module"></script>
</body>
</html>