/tracking.js

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8431b62 Oct 26, 2016
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@eduardolundgren @mairatma @zenorocha @overflowcrash @pablocp @lucascmelo
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>tracking.js - color with camera</title>
<link rel="stylesheet" href="assets/demo.css">
<script src="../build/tracking-min.js"></script>
<script src="../node_modules/dat.gui/build/dat.gui.min.js"></script>
<script src="assets/stats.min.js"></script>
<script src="assets/color_camera_gui.js"></script>
<style>
video, canvas {
margin-left: 100px;
margin-top: 35px;
position: absolute;
}
</style>
</head>
<body>
<div class="demo-title">
<p><a href="http://trackingjs.com" target="_parent">tracking.js</a> － choose the colors you want to detect through the controls on the right</p>
</div>
<div class="demo-frame">
<div class="demo-container">
<video id="video" width="600" height="450" preload autoplay loop muted controls></video>
<canvas id="canvas" width="600" height="450"></canvas>
</div>
</div>
<script>
window.onload = function() {
var video = document.getElementById('video');
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
var tracker = new tracking.ColorTracker();
tracking.track('#video', tracker, { camera: true });
tracker.on('track', function(event) {
context.clearRect(0, 0, canvas.width, canvas.height);
event.data.forEach(function(rect) {
if (rect.color === 'custom') {
rect.color = tracker.customColor;
}
context.strokeStyle = rect.color;
context.strokeRect(rect.x, rect.y, rect.width, rect.height);
context.font = '11px Helvetica';
context.fillStyle = "#fff";
context.fillText('x: ' + rect.x + 'px', rect.x + rect.width + 5, rect.y + 11);
context.fillText('y: ' + rect.y + 'px', rect.x + rect.width + 5, rect.y + 22);
});
});
initGUIControllers(tracker);
};
</script>
</body>
</html>