Smoke Effect Demo

Developer
Danwarfel
Size
2,920 Kb
Views
8,096
  1. Smoke Effect Demo Previews
  2. Smoke Effect Demo HTML Codes
  3. Smoke Effect Demo CSS Codes
  4. Smoke Effect Demo JS Codes

How do I make an smoke effect demo?

Just a little smoke effect on canvas demo.. What is a smoke effect demo? How do you make a smoke effect demo? This script and codes were developed by Danwarfel on 04 January 2023, Wednesday.

Smoke Effect Demo Previews
IQ Test

Smoke Effect Demo - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Smoke Effect Demo</title> <script src="https://s.codepen.io/assets/libs/modernizr.js" type="text/javascript"></script> <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="canvas"></canvas> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Smoke Effect Demo - Script Codes CSS Codes

body, html { background-color: transparent; color: #fff; width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden;
}
canvas { position: absolute; margin-left: 0%;
}

Smoke Effect Demo - Script Codes JS Codes

(function () { var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame; window.requestAnimationFrame = requestAnimationFrame;
})();
var canvas = document.getElementById("canvas"), ctx = canvas.getContext("2d");
canvas.height = document.body.offsetHeight;
canvas.width = 600;
var parts = [], minSpawnTime = 40, lastTime = new Date().getTime(), maxLifeTime = Math.min(5000, (canvas.height/(1.5*60)*1000)), emitterX = canvas.width / 2, emitterY = canvas.height - 10, smokeImage = new Image();
function spawn() { if (new Date().getTime() > lastTime + minSpawnTime) { lastTime = new Date().getTime(); parts.push(new smoke(emitterX, emitterY)); }
}
function render() { var len = parts.length; ctx.clearRect(0, 0, canvas.width, canvas.height); while (len--) { if (parts[len].y < 0 || parts[len].lifeTime > maxLifeTime) { parts.splice(len, 1); } else { parts[len].update(); ctx.save(); var offsetX = -parts[len].size/2, offsetY = -parts[len].size/2; ctx.translate(parts[len].x-offsetX, parts[len].y-offsetY); ctx.rotate(parts[len].angle / 180 * Math.PI); ctx.globalAlpha = parts[len].alpha; ctx.drawImage(smokeImage, offsetX,offsetY, parts[len].size, parts[len].size); ctx.restore(); } } spawn(); requestAnimationFrame(render);
}
function smoke(x, y, index) { this.x = x; this.y = y; this.size = 2; this.startSize = 25; this.endSize = 40; this.angle = Math.random() * 339; this.startLife = new Date().getTime(); this.lifeTime = 0; this.velY = -1 - (Math.random()*0.5); this.velX = Math.floor(Math.random() * (-6) + 3) / 10;
}
smoke.prototype.update = function () { this.lifeTime = new Date().getTime() - this.startLife; this.angle += 0.2; var lifePerc = ((this.lifeTime / maxLifeTime) * 100); this.size = this.startSize + ((this.endSize - this.startSize) * lifePerc * .1); this.alpha = 1 - (lifePerc * .01); this.alpha = Math.max(this.alpha,0); this.x += this.velX; this.y += this.velY;
}
smokeImage.src = "http://danwarfel.com/smoke-particle.gif";
smokeImage.onload = function () { render();
}
window.onresize = resizeMe;
window.onload = resizeMe;
function resizeMe() { canvas.height = document.body.offsetHeight;
}
Smoke Effect Demo - Script Codes
Smoke Effect Demo - Script Codes
Home Page Home
Developer Danwarfel
Username danwarfel
Uploaded January 04, 2023
Rating 4
Size 2,920 Kb
Views 8,096
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