tracking.js-sample/index.html at master · ClubeDosGeeksCoding/tracking.js-sample · GitHub

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<!DOCTYPE html>
<html>
<head>
	<title>Usando tracking.js</title>
	<script src="node_modules/tracking/build/tracking-min.js"></script>
	<script src="node_modules/tracking/build/data/face-min.js"></script>
</head>
<body>
	<div class="demo-container">
		<img id="img" src="assets/img1.jpg" />
	</div>
</body>
<style type="text/css">
	.rect {
		border: 2px solid green;
		left: -1000px;
		position: absolute;
		top: -1000px;
	}
</style>
<script>
	window.onload = function() {
		var img = document.getElementById('img');
		var tracker = new tracking.ObjectTracker(['face']);
		tracker.setStepSize(1.7);
		tracking.track('#img', tracker);
		tracker.on('track', function(event) {
			event.data.forEach(function(rect) {
				console.log(rect)
				window.plot(rect.x, rect.y, rect.width, rect.height);
			});
		});
		window.plot = function(x, y, w, h) {
			var rect = document.createElement('div');
			document.querySelector('.demo-container').appendChild(rect);
			rect.classList.add('rect');
			rect.style.width = w + 'px';
			rect.style.height = h + 'px';
			rect.style.left = (img.offsetLeft + x) + 'px';
			rect.style.top = (img.offsetTop + y) + 'px';
		};
	};
</script>
</html>