Function sample_visual 

pub fn sample_visual(
    properties: &VisualProperties,
    time: MediaTime,
    aspect: f64,
) -> EvaluatedVisual

Evaluates visual properties at a timestamp: a clip’s at timeline time, a transform node’s at composition time. aspect is the width over the height of the space the position is normalized in (the canvas), in which a position moving along a spatial curve is measured.

An overshooting timing curve can carry a value past its keyframes. Opacity is clamped to its domain, 0..=1; position, scale, and rotation have no bounds and keep the overshoot, as far as a finite f32 goes.