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Pat Cavit 2016-05-17 14:53:33 -07:00
parent db609b9142
commit df233c02ed
2 changed files with 62 additions and 62 deletions
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62
limiter.js
View file

@ -1,35 +1,35 @@
var FRAME_BUDGET = 16 // 60 frames per second = 1 call per 16 ms var FRAME_BUDGET = 16 // 60 frames per second = 1 call per 16 ms
module.exports = function($window, render) { module.exports = function($window, render) {
var rAF = $window.requestAnimationFrame || $window.setTimeout var rAF = $window.requestAnimationFrame || $window.setTimeout
var cAF = $window.cancelAnimationFrame || $window.clearTimeout var cAF = $window.cancelAnimationFrame || $window.clearTimeout
var last = 0 var last = 0
var pending var pending
return function() { return function() {
var now = new Date() var now = new Date()
// First render, OR if the time since the last render is greater // First render, OR if the time since the last render is greater
// than the frame budget // than the frame budget
// just immediately render // just immediately render
if(!last || now - last > FRAME_BUDGET) { if(!last || now - last > FRAME_BUDGET) {
last = now; last = now;
return render() return render()
} }
// Redraw already pending, abort // Redraw already pending, abort
if(pending) { if(pending) {
return return
} }
// Schedule a redraw for the next tick // Schedule a redraw for the next tick
pending = rAF(function() { pending = rAF(function() {
render() render()
last = new Date() last = new Date()
pending = null pending = null
}, FRAME_BUDGET - (now - last)) }, FRAME_BUDGET - (now - last))
} }
} }

62
mithril.js
View file

@ -578,37 +578,37 @@ var createRenderer = function($window) {
var FRAME_BUDGET = 16 // 60 frames per second = 1 call per 16 ms var FRAME_BUDGET = 16 // 60 frames per second = 1 call per 16 ms
var limiter = function($window, render) { var limiter = function($window, render) {
var rAF = $window.requestAnimationFrame || $window.setTimeout var rAF = $window.requestAnimationFrame || $window.setTimeout
var cAF = $window.cancelAnimationFrame || $window.clearTimeout var cAF = $window.cancelAnimationFrame || $window.clearTimeout
var last = 0 var last = 0
var pending var pending
return function() { return function() {
var now = new Date() var now = new Date()
// First render, OR if the time since the last render is greater // First render, OR if the time since the last render is greater
// than the frame budget // than the frame budget
// just immediately render // just immediately render
if(!last || now - last > FRAME_BUDGET) { if(!last || now - last > FRAME_BUDGET) {
last = now; last = now;
return render() return render()
} }
// Redraw already pending, abort // Redraw already pending, abort
if(pending) { if(pending) {
return return
} }
// Schedule a redraw for the next tick // Schedule a redraw for the next tick
pending = rAF(function() { pending = rAF(function() {
render() render()
last = new Date() last = new Date()
pending = null pending = null
}, FRAME_BUDGET - (now - last)) }, FRAME_BUDGET - (now - last))
} }
} }
; ;