Struct ShapeBone 

pub struct ShapeBone {
    pub start: Vec2,
    pub end: Vec2,
    pub radius: f32,
    pub density: f32,
    pub name: String,
}

A bone segment that defines part of the entity’s shape. Particles are attracted to positions near bones proportional to bone density.

Fields

start: Vec2

Start position of the bone (relative to entity center).

end: Vec2

End position.

radius: f32

Radius of influence around the bone.

density: f32

Density weight (higher = more particles attracted here).

name: String

Bone name (for debugging/editor).

Implementations

impl ShapeBone

pub fn new(start: Vec2, end: Vec2, radius: f32, density: f32) -> Self

pub fn named(self, name: &str) -> Self

pub fn length(&self) -> f32

Length of this bone segment.

pub fn midpoint(&self) -> Vec2

Midpoint of the bone.

pub fn closest_point(&self, pos: Vec2) -> Vec2

Closest point on the bone segment to a given position.

pub fn distance_to(&self, pos: Vec2) -> f32

Distance from a point to the bone segment.

pub fn density_at(&self, pos: Vec2, falloff: f32) -> f32

Density contribution at a point (gaussian falloff from bone).

Trait Implementations

impl Clone for ShapeBone

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShapeBone

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

Formats the value using the given formatter.