Struct BuoyancyField 

pub struct BuoyancyField {
    pub up: Vec3,
    pub fluid_density: f32,
    pub gravity: f32,
    pub surface_height: Option<f32>,
}

Buoyancy force: applies upward lift inversely proportional to particle density.

Fields

up: Vec3

Upward direction (usually +Y).

fluid_density: f32

Fluid density (e.g. air ~1.2 kg/m³, water ~1000).

gravity: f32

Gravity magnitude used for buoyancy calculation.

surface_height: Option<f32>

Only apply below this height.

Implementations

impl BuoyancyField

pub fn air(gravity: f32) -> Self

pub fn water(gravity: f32, surface_y: f32) -> Self

pub fn smoke_in_air() -> Self

pub fn acceleration(&self, p_pos: Vec3, mass: f32, size: f32) -> Vec3

Buoyant acceleration for a particle with given mass and volume (estimated from size).

Trait Implementations

impl Clone for BuoyancyField

fn clone(&self) -> BuoyancyField

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuoyancyField

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

Formats the value using the given formatter.