Struct AnimationFrameData 

pub struct AnimationFrameData {
    pub runtime_seconds: f32,
    pub origin: Rect,
    pub destination: Rect,
    pub opacity_start: f32,
    pub opacity_end: f32,
    pub builtin: Option<AnimationFrameResult>,
}

Data passed to animation hook methods describing the current frame.

Fields

runtime_seconds: f32

Elapsed time since the animation started, in seconds.

origin: Rect

The starting rectangle of the window (position and size at animation start).

destination: Rect

The target rectangle of the window (position and size at animation end).

opacity_start: f32

The starting opacity of the window.

opacity_end: f32

The target opacity of the window.

builtin: Option<AnimationFrameResult>

The frame that the configured built-in animation (e.g. slide) produces at Self::runtime_seconds.

Return this unchanged from an animation hook to delegate the frame to the built-in animation explicitly, or modify it first to build on top of it. It also tells a plugin where the built-in animation is placing the window this frame. None when the compositor does not provide it.