Snow

Developer
Moeid Saleem
Size
2,733 Kb
Views
22,264
  1. Snow Previews
  2. Snow HTML Codes
  3. Snow CSS Codes
  4. Snow JS Codes

How do I make an snow?

Forked from Brian Douglas's Pen Snow.. What is a snow? How do you make a snow? This script and codes were developed by Moeid Saleem on 28 October 2022, Friday.

Snow Previews
IQ Test

Snow - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Snow</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id="c" width="800" height="800"></canvas> <script src="js/index.js"></script>
</body>
</html>

Snow - Script Codes CSS Codes

body { background: #222; text-align: center;
}
canvas { background: -webkit-linear-gradient( rgb(84, 184, 195), rgb(125, 205, 178) ); background: linear-gradient( rgb(84, 184, 195), rgb(125, 205, 178) ); opacity: 30%;
}

Snow - Script Codes JS Codes

function Utils() {}
Utils.prototype.randomNumber = function(min, max) { return Math.floor(Math.random() * (max - min + 1)) + min;
};
Utils.prototype.Sin = function(n, angle, arc, plus) { return plus ? n + Math.sin(angle) * arc : n - Math.sin(angle) * arc;
};
Utils.prototype.Cos = function(n, angle, arc, plus) { return plus ? n + Math.cos(angle) * arc : n - Math.cos(angle) * arc;
};
var utils = new Utils();
(function(Utils) { function Canvas(_) { this.canvas = document.getElementById(_); this.context = this.canvas.getContext('2d'); this.width = this.canvas.width; this.height = this.canvas.height; } function Snow(canvas, amount) { this.canvas = canvas; this.amount = amount; this.generate(); this.init(); } Snow.prototype.config = function(_) { return { id: _, x: 0, y: 0, vx: 0, vy: 0, alpha: 0.1, angle: 0 }; }; Snow.prototype.generate = function() { var i, snowflake; this.arr = []; for (i = 0; i < this.amount; ++i) { snowflake = this.config(i); this.arr.push(snowflake); } }; Snow.prototype.reset = function(_) { _ = this.arr[_]; _.init = false; _.x = Utils.randomNumber(0, this.canvas.width); _.y = Utils.randomNumber(0, this.canvas.height / 3); _.vy = Utils.randomNumber(0.5, 1.5); _.vx = Utils.randomNumber(0.1, 0.5); _.alpha = Utils.randomNumber(0.1, 0.5); }; Snow.prototype.tick = function(_) { var index = _; _ = this.arr[_]; this.canvas.context.fillStyle = "rgba(255,255,255, " + _.alpha + ")"; if (_.id % 2 === 0) { this.canvas.context.fillRect(_.x, _.y, 3, 3); } else { this.flake(_); } _.y += _.vy; _.id % 2 === 0 ? _.x = Utils.Sin(_.x, _.angle, 1, true) : _.x = Utils.Cos(_.x, _.angle, 0.5, true); _.angle+=0.01; if (_.init) { _.alpha -= 0.01; } else { _.alpha += 0.01; } if (_.alpha <= 0) { this.reset(index); } else if (_.alpha >= 1) { _.init = true; } }; Snow.prototype.flake = function(_) { var size = 3; this.canvas.context.save(); this.canvas.context.translate(_.x, _.y); for (var row = 0; row < 3; row++) { for (var column = 0; column < 3; column++) { var x = column * size; var y = row * size; if (row % 2 == 0) { if (column % 2 == 0) { this.canvas.context.fillStyle = "transparent"; } else { this.canvas.context.fillStyle = "rgba(255,255,255, " + _.alpha + ")"; } } else { if (column % 2 == 0) { this.canvas.context.fillStyle = "rgba(255,255,255, " + _.alpha + ")"; } else { this.canvas.context.fillStyle = "transparent"; } } this.canvas.context.fillRect(x, y, size, size); } } this.canvas.context.fill(); this.canvas.context.restore(); }; Snow.prototype.render = function() { var _this = this, i; this.canvas.context.clearRect(0, 0, this.canvas.width, this.canvas.height); for (i = 0; i < this.arr.length; ++i) { this.tick(i); } window.requestAnimationFrame(this.render.bind(this)); }; Snow.prototype.init = function() { var i; for (i = 0; i < this.arr.length; ++i) { this.reset(i); } this.render(); console.table(this.arr); }; return new Snow(new Canvas('c'), 20);
})(utils);
Snow - Script Codes
Snow - Script Codes
Home Page Home
Developer Moeid Saleem
Username moeidsaleem
Uploaded October 28, 2022
Rating 3
Size 2,733 Kb
Views 22,264
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Moeid Saleem (moeidsaleem) Script Codes
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A Pen by Moeid Saleem
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