scratchfoundation/paper.js
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Implement onFrame event.delta & event.time.

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This commit is contained in:
Jonathan Puckey 2011-05-11 22:46:08 +02:00
parent b7f28140e7
commit bd932a9242
1 changed files with 12 additions and 1 deletions
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13
src/util/PaperScript.js
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@ -149,13 +149,24 @@ var PaperScript = this.PaperScript = new function() {
try {
var onFrame = eval('onFrame');
if (onFrame) {
var lastTime;
var totalTime = 0;
function frame() {
// Request next frame already
DomEvent.requestAnimationFrame(frame, doc && doc.canvas);
onFrame();
var time = Date.now() / 1000;
// Time elapsed since last redraw in seconds:
var delta = lastTime ? time - lastTime : 0;
// Time since first call of frame() in seconds:
totalTime += delta;
onFrame({
delta: delta,
time: totalTime
});
// Automatically redraw document each frame.
if (doc)
doc.redraw();
lastTime = time;
};
// Call the onFrame handler and redraw the document:
frame();