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Eyes that follow your mouse cursor. Using HTML5 canvas.
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| // Paul Irish animation loop polyfill | |
| // https://gist.github.com/paulirish/1579671 | |
| (function() { | |
| var lastTime = 0; | |
| var vendors = ['ms', 'moz', 'webkit', 'o']; | |
| for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { | |
| window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame']; | |
| window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] | |
| || window[vendors[x]+'CancelRequestAnimationFrame']; | |
| } | |
| if (!window.requestAnimationFrame) | |
| window.requestAnimationFrame = function(callback, element) { | |
| var currTime = new Date().getTime(); | |
| var timeToCall = Math.max(0, 16 - (currTime - lastTime)); | |
| var id = window.setTimeout(function() { callback(currTime + timeToCall); }, | |
| timeToCall); | |
| lastTime = currTime + timeToCall; | |
| return id; | |
| }; | |
| if (!window.cancelAnimationFrame) | |
| window.cancelAnimationFrame = function(id) { | |
| clearTimeout(id); | |
| }; | |
| }()); |
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| html, body { | |
| height: 100%; | |
| padding: 0; | |
| margin: 0; | |
| } | |
| body { | |
| background-color: #000; | |
| cursor: crosshair; | |
| } | |
| canvas { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| background-color: rgba(255,255,255,0.4); | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Eyes</title> | |
| <script src="animationPolyfill.js"></script> | |
| <script src="eyes.js"></script> | |
| <link rel="stylesheet" href="eyes.css"> | |
| </head> | |
| <body> | |
| <canvas id="eyes"></canvas> | |
| </body> | |
| </html> |
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| // Two eyes on a canvas that follow the mouse cursos | |
| // just like xeyes | |
| // Copyright (c) 2013 Niels Doorn | |
| var canvas; | |
| var context; | |
| var mx = 0; | |
| var my = 0; | |
| var eyes = [ | |
| { | |
| 'centerX' : 67, | |
| 'centerY' : 67, | |
| 'radius' : 65 | |
| }, | |
| { | |
| 'centerX' : 250, | |
| 'centerY' : 60, | |
| 'radius' : 45 | |
| }, | |
| { | |
| 'centerX' : 400, | |
| 'centerY' : 360, | |
| 'radius' : 34 | |
| }, | |
| { | |
| 'centerX' : 850, | |
| 'centerY' : 460, | |
| 'radius' : 150 | |
| }, | |
| { | |
| 'centerX' : 50, | |
| 'centerY' : 160, | |
| 'radius' : 25 | |
| }, | |
| { | |
| 'centerX' : 500, | |
| 'centerY' : 320, | |
| 'radius' : 40 | |
| } | |
| ] | |
| window.onload = function() { | |
| canvas = document.getElementById('eyes'); | |
| context = canvas.getContext('2d'); | |
| canvas.width = window.innerWidth; | |
| canvas.height = window.innerHeight; | |
| window.onmousemove = function(evt) { mx = evt.x; my = evt.y }; | |
| tekenFrame(); | |
| } | |
| function tekenFrame() { | |
| context.clearRect(0, 0, canvas.width, canvas.height); | |
| for (var i = 0; i < eyes.length; i++) { | |
| drawEye(eyes[i]); | |
| }; | |
| // loop | |
| requestAnimationFrame(tekenFrame); | |
| } | |
| function drawEye(eye) { | |
| bepaalCoordinaten(eye); | |
| // clip the eye | |
| context.save(); | |
| context.beginPath(); | |
| context.arc(eye.centerX, eye.centerY, eye.radius, 0, Math.PI * 2); | |
| context.clip(); | |
| // eye | |
| context.beginPath(); | |
| context.arc(eye.centerX, eye.centerY, eye.radius, 0, Math.PI * 2); | |
| context.fillStyle = "#fff"; | |
| context.fill(); | |
| context.closePath(); | |
| // iris | |
| context.beginPath(); | |
| context.arc(eye.centerX + eye.pupilX, eye.centerY + eye.pupilY, eye.radius / 2, 0, Math.PI * 2); | |
| context.fillStyle = "#007"; | |
| context.fill(); | |
| context.closePath(); | |
| // pupil | |
| context.beginPath(); | |
| context.arc(eye.centerX + eye.pupilX, eye.centerY + eye.pupilY, eye.radius / 5, 0, Math.PI * 2); | |
| context.fillStyle = "#000"; | |
| context.fill(); | |
| context.closePath(); | |
| context.restore(); | |
| } | |
| function bepaalCoordinaten(eye) { | |
| // afstand van middenpunt oog tot cursor | |
| dx = mx - eye.centerX; | |
| dy = my - eye.centerY; | |
| // stelling van pythagoras | |
| c = Math.sqrt((dx*dx) + (dy*dy)); | |
| // afstand middelpunt tot pupil | |
| r = eye.radius * 0.8; | |
| // cursor op oog | |
| if (Math.abs(dx) < r && Math.abs(dy) < r && c < r) { | |
| r = c; | |
| } | |
| // hoek bepalen | |
| alfa = Math.asin(dy / c); | |
| // coordinaten op rand cirkel bepalen | |
| eye.pupilX = Math.cos(alfa) * r; | |
| // 180 graden fout herstellen | |
| eye.pupilX = (dx < 0 ? eye.pupilX * -1 : eye.pupilX); | |
| eye.pupilY = Math.sin(alfa) * r; | |
| } |
Nice work this is exactly what I needed :)
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Any way to make this work on firefox? in lost.
Thanks1