Struct Ballistic 

pub struct Ballistic(/* private fields */);

Coupled constant gravity and linear drag, including the zero-drag limit.

Implementations

impl Ballistic

pub fn burst(center: Point, count: u64) -> Self

Creates a seeded radial burst with default speed 80..160 and life 3s.

pub fn gravity(self, gravity: Vector2) -> Self

Replaces constant acceleration in units/squared second.

pub fn drag(self, drag: f64) -> Self

Replaces nonnegative linear damping coefficient in reciprocal seconds.

pub fn speed(self, minimum: f64, maximum: f64) -> Self

Replaces deterministic radial speed range.

impl Ballistic

pub fn seed(self, seed: u64) -> Self

Replaces deterministic initial-state seed.

pub fn lifetime(self, lifetime: Duration) -> Self

Replaces positive half-open lifetime in seconds.

Trait Implementations

impl Clone for Ballistic

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 Ballistic

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

Formats the value using the given formatter.

impl TrajectoryModel for Ballistic

fn analytic_bounds(&self, age: f32) -> Result<Option<Rect>, ValidationError>

Conservative extent of every particle center at this age, for models whose Self::analytic_upload lets the GPU evaluate positions. Returning None keeps the ordinary evaluated path.

fn spawned(&self, from: Time, to: Time) -> Range<u64>

Stable IDs born in [from,to).

fn birth_time(&self, _: u64) -> Time

Exact integer-tick birth time of one stable ID.

fn state( &self, index: u64, age: f32, ) -> Result<Option<Particle>, ValidationError>

Complete state at this age; None means absent/dead.

fn duration(&self) -> Option<Duration>

Optional finite natural duration for timeline registration.

fn analytic_upload( &self, _age_seconds: f32, _primitive: InstanceKind, _align_to_velocity: bool, ) -> Result<Option<AnalyticInstanceUpload>, ValidationError>

Optional seeded initial-state upload for supported random-access models. Custom models and unsupported precision retain the ordinary evaluated path.