public static EventStream<Long> animationFrames() {
        return animationTicks()
                .accumulate(t(0L, -1L), (state, now) -> state.map((d, last) -> {
                        return t(last == -1L ? 0L : now - last, now);
                }))
                .map(t -> t._1);
    }
public static EventStream<Long> animationFrames() {
        return animationTicks()
                .accumulate(t(0L, -1L), (state, now) -> state.map((d, last) -> {
                        return t(last == -1L ? 0L : now - last, now);
                }))
                .map(t -> t._1);
    }
public static EventStream < Long > animationFrames ( ) { return animationTicks ( ) . accumulate ( t ( 0L , - 1L ) , ( state , now ) -> state . map ( ( d , last ) -> { return t ( last == - 1L ? 0L : now - last , now ) ; } ) ) . map ( t -> t . _1 ) ; }
Returns a stream that, on each animation frame, emits the duration
elapsed since the previous animation frame, in nanoseconds.
Returns a stream that on each animation frame emits the duration elapsed since the previous animation frame in nanoseconds .