HTML & CSS Duman Efekti Kodu İndir - Smoke Effect Download
A Pen by Şenol GÜNECİ on CodePen.
Created
January 23, 2019 20:05
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Duman Efekti
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| <canvas id="canvas"></canvas> |
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| (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 = 300; | |
| 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 = 1; | |
| this.startSize = 32; | |
| this.endSize = 40; | |
| this.angle = Math.random() * 359; | |
| 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://somethinghitme.com/projects/particle%20test/images/smoke.png"; | |
| smokeImage.onload = function () { | |
| render(); | |
| } | |
| window.onresize = resizeMe; | |
| window.onload = resizeMe; | |
| function resizeMe() { | |
| canvas.height = document.body.offsetHeight; | |
| } |
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| body, html { | |
| background-color: #000; | |
| color: #fff; | |
| width: 100%; | |
| height: 100%; | |
| margin: 0; | |
| padding: 0; | |
| overflow: hidden; | |
| } | |
| canvas { | |
| position:absolute; | |
| margin-left : 50%; | |
| left: -150px; | |
| } |
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