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Team:Calgary/VGSandbox
From 2012.igem.org
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| + | <!DOCTYPE html> | ||
| + | <html lang="en"> | ||
| + | <head> | ||
| + | <meta charset="utf-8" /> | ||
| + | <title>Dizzy</title> | ||
| + | <style> | ||
| + | * { margin: 0;} | ||
| + | body { font-family: helvetica; padding: 10px; } | ||
| + | input { width: 50px; } | ||
| + | /*video, canvas { display: block; }*/ | ||
| + | p { margin-top: 20px;} | ||
| + | </style> | ||
| + | </head> | ||
| + | <body> | ||
| + | <video height="360" width="480"> | ||
| + | <source src="assets/dizzy.mp4" /> | ||
| + | <source src="assets/dizzy.ogv" /> | ||
| + | </video><canvas></canvas> | ||
| + | <p> | ||
| + | <input type="button" id="play" value="play"> | ||
| + | <span id="position">00:00</span> / <span id="duration"></span> | ||
| + | </p> | ||
| + | <script src="/js/h5utils.js"></script> | ||
| + | <script> | ||
| + | var video = document.querySelector('video'); | ||
| + | var togglePlay = document.querySelector('#play'); | ||
| + | var position = document.querySelector('#position'); | ||
| + | var canvas = document.querySelector('canvas'); | ||
| + | var ctx = canvas.getContext('2d'); | ||
| + | |||
| + | addEvent(togglePlay, 'click', function () { | ||
| + | video.playbackRate = 0.5; | ||
| + | if (video.paused) { | ||
| + | if (video.ended) video.currentTime = 0; | ||
| + | video.play(); | ||
| + | this.value = "pause"; | ||
| + | } else { | ||
| + | video.pause(); | ||
| + | this.value = "play"; | ||
| + | } | ||
| + | }); | ||
| + | |||
| + | setInterval(function () { | ||
| + | position.innerHTML = asTime(video.currentTime); | ||
| + | |||
| + | // ctx.restore(); | ||
| + | ctx.drawImage(video, 0, 0, video.width, video.height, 0, 0, canvas.width, canvas.height); | ||
| + | }, 1000 / 15); | ||
| + | |||
| + | addEvent(video, 'ended', function () { | ||
| + | togglePlay.value = "play"; | ||
| + | }); | ||
| + | |||
| + | addEvent(video, 'canplay', function () { | ||
| + | video.muted = true; | ||
| + | document.querySelector('#duration').innerHTML = asTime(this.duration); | ||
| + | startCanvas(); | ||
| + | }); | ||
| + | |||
| + | |||
| + | function startCanvas() { | ||
| + | canvas.setAttribute('height', Math.floor(video.height)); | ||
| + | canvas.setAttribute('width', Math.floor(video.width)); | ||
| + | |||
| + | ctx.translate(canvas.width/2, canvas.height/2); | ||
| + | ctx.scale(-1, 1); | ||
| + | ctx.translate(-canvas.width/2, -canvas.height/2); | ||
| + | ctx.drawImage(video, 0, 0, video.width, video.height, 0, 0, canvas.width, canvas.height); | ||
| + | |||
| + | // var mirror = canvas.height * 0.6; | ||
| + | // var grad = ctx.createLinearGradient(0, 0, 0, mirror); | ||
| + | // grad.addColorStop(0, 'rgba(0, 0, 0, 0.5)'); | ||
| + | // grad.addColorStop(1, 'rgba(0, 0, 0, 1)'); | ||
| + | // ctx.fillStyle = grad; | ||
| + | // ctx.rect(0, 0, canvas.width, mirror); | ||
| + | // ctx.fill(); | ||
| + | // ctx.save(); | ||
| + | } | ||
| + | |||
| + | function asTime(t) { | ||
| + | t = Math.round(t); | ||
| + | var s = t % 60; | ||
| + | var m = Math.round(t / 60); | ||
| + | |||
| + | return two(m) + ':' + two(s); | ||
| + | } | ||
| + | |||
| + | function two(s) { | ||
| + | s += ""; | ||
| + | if (s.length < 2) s = "0" + s; | ||
| + | return s; | ||
| + | } | ||
| + | </script> | ||
| + | </body> | ||
| + | </html> | ||
Revision as of 16:32, 16 May 2012
<!DOCTYPE html>
00:00 /
