Struct ShapeField 

pub struct ShapeField {
    pub bones: Vec<ShapeBone>,
    pub density_falloff: f32,
    /* private fields */
}

The shape field: collection of bones defining the entity’s target form.

Fields

bones: Vec<ShapeBone>

density_falloff: f32

How quickly density falls off with distance from bones.

Implementations

impl ShapeField

pub fn new(bones: Vec<ShapeBone>) -> Self

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

Sample the combined density field at a world position.

pub fn sample_target(&self, rng_seed: u32) -> Vec2

Generate a target position for a particle based on density-weighted random sampling. Uses the bone system: pick a bone proportional to its densitylengthradius, then pick a point along the bone with gaussian offset.

pub fn bounds(&self) -> (Vec2, Vec2)

Bounding box of the shape field.

Trait Implementations

impl Clone for ShapeField

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 ShapeField

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

Formats the value using the given formatter.