Struct SoulParams 

pub struct SoulParams {
    pub period: f32,
    pub max_alpha: f32,
    pub max_scale: f32,
    /* private fields */
}

Parameters for soul. Default is a clearly visible but not overwhelming ghost.

Each cycle lasts period seconds: the ghost starts as an exact copy (scale 1, opacity max_alpha), grows to max_scale and fades to transparent, then the cycle restarts. At the exact cycle start the ghost coincides with the image, so the output equals the input there.

The animation is driven by frame timestamps (pts × time_base); frames without timestamps render the cycle-start (identity) phase.

Fields

period: f32

Cycle length in seconds, 0.1..=10.0.

max_alpha: f32

Ghost opacity at cycle start, 0.0..=1.0; it decays linearly to zero across the cycle.

max_scale: f32

Ghost scale reached at cycle end, 1.0..=2.0.

Trait Implementations

impl Clone for SoulParams

fn clone(&self) -> SoulParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SoulParams

impl Debug for SoulParams

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

Formats the value using the given formatter.

impl Default for SoulParams

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for SoulParams

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

Equality operator ==.

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

Inequality operator !=.

impl Pod for SoulParams

impl StructuralPartialEq for SoulParams

impl Zeroable for SoulParams

fn zeroed() -> Self

Calls zeroed.