Canvas landing

Developer
Size
3,061 Kb
Views
12,144

How do I make an canvas landing?

What is a canvas landing? How do you make a canvas landing? This script and codes were developed by Khangeldy on 09 November 2022, Wednesday.

Canvas landing Previews

Canvas landing - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>canvas landing</title> <link rel="stylesheet" href="css/style.css">
</head>
<body>
<div class="container"> <main class="front-class"></main> <canvas id="front-id"></canvas>
</div>
<div class="assets"><img src="https://images.unsplash.com/photo-1449168013943-3a15804bb41c?ixlib=rb-0.3.5&amp;q=80&amp;fm=jpg&amp;crop=entropy&amp;w=1080&amp;fit=max&amp;s=1958d4bfb59a246c6092ff0daabd284b" id="hero" alt="hero image"/></div> <script src="js/index.js"></script>
</body>
</html>

Canvas landing - Script Codes CSS Codes

* { box-sizing: border-box;
}
html,
body { height: 5000px;
}
.container { width: 90%; height: 300px; position: relative;
}
.front-class { position: fixed; top: 0; left: 0;
}
#front-id { background: #1c1c1c; width: 100%; height: 100%;
}
.assets { display: none;
}
.assets #hero { background-size: cover;
}

Canvas landing - Script Codes JS Codes

var canvas = document.getElementById('front-id');
var context = canvas.getContext('2d');
hero = document.getElementById('hero');
hero.addEventListener('load', function() {	//context.drawImage(hero,0,0);	drawImageProp(context, hero, 0, 0, canvas.width, canvas.height);
});
window.addEventListener('scroll', function() {	var scrolled = window.pageYOffset;	if(scrolled > 100) {	hero.style.opacity = 0;	}
});
function drawImageProp(ctx, img, x, y, w, h, offsetX, offsetY) { if (arguments.length === 2) { x = y = 0; w = ctx.canvas.width; h = ctx.canvas.height; } // default offset is center offsetX = typeof offsetX === "number" ? offsetX : 0.5; offsetY = typeof offsetY === "number" ? offsetY : 0.5; // keep bounds [0.0, 1.0] if (offsetX < 0) offsetX = 0; if (offsetY < 0) offsetY = 0; if (offsetX > 1) offsetX = 1; if (offsetY > 1) offsetY = 1; var iw = img.width, ih = img.height, r = Math.min(w / iw, h / ih), nw = iw * r, // new prop. width nh = ih * r, // new prop. height cx, cy, cw, ch, ar = 1; // decide which gap to fill if (nw < w) ar = w / nw; if (nh < h) ar = h / nh; nw *= ar; nh *= ar; // calc source rectangle cw = iw / (nw / w); ch = ih / (nh / h); cx = (iw - cw) * offsetX; cy = (ih - ch) * offsetY; // make sure source rectangle is valid if (cx < 0) cx = 0; if (cy < 0) cy = 0; if (cw > iw) cw = iw; if (ch > ih) ch = ih; // fill image in dest. rectangle ctx.drawImage(img, cx, cy, cw, ch, x, y, w, h);
}
Canvas landing - Script Codes
Canvas landing - Script Codes
Home Page Home
Developer Khangeldy
Username Khangeldy
Uploaded November 09, 2022
Rating 3
Size 3,061 Kb
Views 12,144
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Khangeldy (Khangeldy) Script Codes
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