Struct BuoyancyForce 

pub struct BuoyancyForce {
    pub fluid_density: f32,
    pub gravity: f32,
    pub drag: f32,
}

Compute the buoyant force on a rigid body submerged in a WaterSurface.

Uses a simplified integration: sample the water height at the body’s XZ position and compute the submerged volume fraction of the body’s bounding box.

Fields

fluid_density: f32

Fluid density (kg/m³).

gravity: f32

Gravity magnitude.

drag: f32

Drag coefficient for water resistance.

Implementations

impl BuoyancyForce

pub fn new(fluid_density: f32) -> Self

pub fn compute( &self, position: Vec3, velocity: Vec3, half_extents: Vec3, water_h: f32, ) -> Vec3

Returns the buoyant force vector (upward) for a body at position with bounding box half_extents, given a water surface height water_h.

pub fn apply_to_body( &self, position: Vec3, velocity: Vec3, half_extents: Vec3, water_surface: &WaterSurface, ) -> Vec3

Apply buoyancy and drag to a rigid body from joints.rs. Returns the net upward force to be applied.

pub fn compute_with_torque( &self, position: Vec3, velocity: Vec3, half_extents: Vec3, orientation: Quat, water_surface: &WaterSurface, ) -> (Vec3, Vec3)

Compute torque from buoyancy when body is tilted (tilted buoyancy center). Returns (force, torque_moment) in world space.