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Fixed the bug when emit('stop') the requestAnimationFrame callback still run #320

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Fixed the bug when emit('stop') the requestAnimationFrame callback still run #320

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7 changes: 4 additions & 3 deletions src/tracking.js
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Original file line number Diff line number Diff line change
Expand Up @@ -245,9 +245,10 @@
// it seems all handled in the tracking.TrackerTask..
// so in short, remove the tracking.TrackerTask from here
// if the user want to use it, it can create it himself
var requestId;
var stopRequestAnimationFrame = false;
var requestAnimationFrame_ = function() {
requestId = window.requestAnimationFrame(function() {
window.requestAnimationFrame(function() {
if (stopRequestAnimationFrame) return;
if (element.readyState === element.HAVE_ENOUGH_DATA) {
try {
// Firefox v~30.0 gets confused with the video readyState firing an
Expand All @@ -263,7 +264,7 @@

var task = new tracking.TrackerTask(tracker);
task.on('stop', function() {
window.cancelAnimationFrame(requestId);
stopRequestAnimationFrame = true;
});
task.on('run', function() {
requestAnimationFrame_();
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