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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.container {
height: 100vh;
display: grid;
grid-template-columns: repeat(2, 1fr);
}
.container>div {
border: 1px solid black;
}
</style>
</head>
<body>
<div class="container">
<div class="up-left"></div>
<div class="up-right"></div>
<div class="down-left"></div>
<div class="down-right"></div>
</div>
<script src="./webgazer.js" type="text/javascript"></script>
<script>
const upLeft = document.querySelector('.up-left')
const upRight = document.querySelector('.up-right')
const downLeft = document.querySelector('.down-left')
const downRight = document.querySelector('.down-right')
webgazer.setGazeListener(function (data, elapsedTime) {
if (data == null) {
return;
}
upLeft.style.backgroundColor = 'white';
upRight.style.backgroundColor = 'white';
downLeft.style.backgroundColor = 'white';
downRight.style.backgroundColor = 'white';
if (data.x < window.innerWidth / 2 && data.y < window.innerHeight / 2) {
upLeft.style.backgroundColor = 'tomato';
}
if (data.x > window.innerWidth / 2 && data.y < window.innerHeight / 2) {
upRight.style.backgroundColor = 'tomato';
}
if (data.x < window.innerWidth / 2 && data.y > window.innerHeight / 2) {
downLeft.style.backgroundColor = 'tomato';
}
if (data.x > window.innerWidth / 2 && data.y > window.innerHeight / 2) {
downRight.style.backgroundColor = 'tomato';
}
}).begin()
</script>
</body>
</html>