Struct FlowField 

pub struct FlowField {
    pub source: FlowSource,
    pub strength: f32,
    pub phase_speed: f64,
}

Time-evolving noise or image flow, with no mutable frame cursor.

Fields

source: FlowSource

Field material.

strength: f32

Acceleration scale.

phase_speed: f64

Phase rate per second.

Implementations

impl FlowField

pub fn curl(seed: u32, frequency: f64, strength: f32) -> Self

Constructs an explicit shared two-dimensional curl source.

Trait Implementations

impl Clone for FlowField

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ParticleModifier for FlowField

fn apply( &self, particle: &mut Particle, step: f32, time: Time, _: &mut Random, ) -> Result<(), ValidationError>

Updates one live particle; index and canonical age remain engine-owned.

fn work(&self) -> u64

Conservative per-particle operator work charged before replay.

fn resets_color(&self) -> bool

Requests birth-color restoration before the ordered modifier chain. Multiplicative lifetime energy curves use this to avoid frame-count accumulation.

fn apply_event( &self, particle: &mut Particle, step_seconds: f32, time: Time, random: &mut Random, ) -> Result<bool, ValidationError>

Optional predicted-step collision response, preserving the original callback API.