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import { Observable } from '../../Observable';
import { performanceTimestampProvider } from '../../scheduler/performanceTimestampProvider';
import { animationFrameProvider } from '../../scheduler/animationFrameProvider';
export function animationFrames(timestampProvider) {
return timestampProvider ? animationFramesFactory(timestampProvider) : DEFAULT_ANIMATION_FRAMES;
}
function animationFramesFactory(timestampProvider) {
return new Observable((subscriber) => {
const provider = timestampProvider || performanceTimestampProvider;
const start = provider.now();
let id = 0;
const run = () => {
if (!subscriber.closed) {
id = animationFrameProvider.requestAnimationFrame((timestamp) => {
id = 0;
const now = provider.now();
subscriber.next({
timestamp: timestampProvider ? now : timestamp,
elapsed: now - start,
});
run();
});
}
};
run();
return () => {
if (id) {
animationFrameProvider.cancelAnimationFrame(id);
}
};
});
}
const DEFAULT_ANIMATION_FRAMES = animationFramesFactory();
//# sourceMappingURL=animationFrames.js.map
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