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Simplify onFrame handling.

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This commit is contained in:
Jürg Lehni 2011-05-15 23:41:24 +01:00
parent c1dc823706
commit 3bd4db802c
1 changed files with 6 additions and 7 deletions
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13
src/document/DocumentView.js
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@ -169,8 +169,8 @@ var DocumentView = this.DocumentView = Base.extend({
this._onFrame = onFrame;
var that = this,
running = false,
lastTime,
totalTime = 0,
before,
time = 0,
count = 0;
function frame(dontSwitch) {
if (!that._onFrame) {
@ -182,17 +182,16 @@ var DocumentView = this.DocumentView = Base.extend({
// Request next frame already
DomEvent.requestAnimationFrame(frame, that._canvas);
running = true;
var time = Date.now() / 1000,
delta = lastTime ? time - lastTime : 0;
totalTime += delta;
var now = Date.now() / 1000,
delta = before ? now - before : 0;
that._onFrame({
delta: delta, // Time elapsed since last redraw in seconds
time: totalTime, // Time since first call of frame() in seconds
time: time += delta, // Time since first call of frame() in seconds
count: count++
});
before = now;
// Automatically draw view on each frame.
that.draw();
lastTime = time;
};
// Call the onFrame handler straight away, initializing the sequence
// of onFrame calls.