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OverlayAnimation

viewport_lib::renderer

Enum OverlayAnimation 

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pub enum OverlayAnimation {
    None,
    FadeIn {
        start_time: f64,
        duration: f32,
    },
    FadeOut {
        start_time: f64,
        duration: f32,
    },
    Pulse {
        start_time: f64,
        period: f32,
    },
}
Expand description

Animation applied to shape opacity each frame.

The animation is resolved during prepare() using the time field on OverlayFrame. All start_time and time values share the same application-defined epoch (e.g. seconds since app launch).

viewport-lib does not own the event loop. The host application must request continuous repaints while animations are active so that prepare() is called often enough to produce smooth updates.

Variants§

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None

No animation; use opacity as-is.

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FadeIn

Fade from 0 to opacity over duration seconds.

Fields

§start_time: f64

Absolute time when the fade starts.

§duration: f32

Duration of the fade in seconds.

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FadeOut

Fade from opacity to 0 over duration seconds.

Fields

§start_time: f64

Absolute time when the fade starts.

§duration: f32

Duration of the fade in seconds.

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Pulse

Oscillate opacity between 0 and opacity with a sinusoidal wave.

Fields

§start_time: f64

Absolute time when the pulse starts.

§period: f32

Period of one full oscillation in seconds.

Trait Implementations§

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impl Clone for OverlayAnimation

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fn clone(&self) -> OverlayAnimation

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for OverlayAnimation

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impl Debug for OverlayAnimation

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for OverlayAnimation

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl PartialEq for OverlayAnimation

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fn eq(&self, other: &OverlayAnimation) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for OverlayAnimation

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