fireball/lib/renderers/webgl/WebGLAnimation.js

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2018-12-25 13:59:22 +00:00
/**
* @author mrdoob / http://mrdoob.com/
*/
function WebGLAnimation() {
var context = null;
var isAnimating = false;
var animationLoop = null;
function onAnimationFrame( time, frame ) {
if ( isAnimating === false ) return;
animationLoop( time, frame );
context.requestAnimationFrame( onAnimationFrame );
}
return {
start: function () {
if ( isAnimating === true ) return;
if ( animationLoop === null ) return;
context.requestAnimationFrame( onAnimationFrame );
isAnimating = true;
},
stop: function () {
isAnimating = false;
},
setAnimationLoop: function ( callback ) {
animationLoop = callback;
},
setContext: function ( value ) {
context = value;
}
};
}
export { WebGLAnimation };