fn step_bool_segment(
from_ticks: i64,
from_value: &KeyframeValue,
to_ticks: i64,
to_value: &KeyframeValue,
sample_ticks: i64,
) -> Option<bool>fn step_bool_segment(
from_ticks: i64,
from_value: &KeyframeValue,
to_ticks: i64,
to_value: &KeyframeValue,
sample_ticks: i64,
) -> Option<bool>