Struct ShadowParams 

pub struct ShadowParams {
    pub base: f32,
    pub grow: f32,
    pub alpha: f32,
    pub fade: f32,
    pub soft: f32,
}

Tunable mapping for cast_shadow: how a blob/contact shadow’s size and opacity change with the caster’s height above the surface. Defaults give the natural look — small/dark/sharp when the caster touches down, growing larger, fainter and softer as it rises. Pass a negative fade to invert the opacity ramp (fainter when close, more opaque when far).

Fields

base: f32

Radius (px) when the caster sits on the surface (height 0).

grow: f32

Extra radius per unit of height — the shadow grows as the caster rises.

alpha: f32

Opacity at height 0 (0..1) — darkest/sharpest when touching the surface.

fade: f32

Opacity lost per unit of height — the shadow fades as the caster rises.

soft: f32

Edge softness 0..1 at height 0 — feathering also widens with height.

Trait Implementations

impl Clone for ShadowParams

fn clone(&self) -> ShadowParams

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ShadowParams

impl Default for ShadowParams

fn default() -> Self

Returns the “default value” for a type.