Function sample_point 

pub fn sample_point(
    animation: &AnimatedPoint,
    time: MediaTime,
    aspect: f64,
) -> Vec2

Samples a position that may move along spatial curves.

Between two keyframes whose facing tangents (the first’s out_tangent, the second’s in_tangent) are both zero, the value moves in a straight line exactly as an Animated<Vec2> does. Otherwise it travels along the cubic Bezier through them, measured in a space aspect wide per unit high, at the speed the timing curve sets: the curve’s eased amount is the fraction of its length travelled. An amount past either end continues straight on along the curve’s tangent there.