Struct FluidDelta 

pub struct FluidDelta {
    pub frame: u64,
    pub base_frame: u64,
    pub changed_indices: Vec<u32>,
    pub positions: Vec<Vec3Fix>,
    pub velocities: Vec<Vec3Fix>,
    pub checksum: u64,
}

Delta-compressed fluid state update

Only contains particles that have changed significantly since the last snapshot.

Fields

frame: u64

Frame number

base_frame: u64

Base frame this delta is relative to

changed_indices: Vec<u32>

Changed particle indices

positions: Vec<Vec3Fix>

New positions for changed particles

velocities: Vec<Vec3Fix>

New velocities for changed particles

checksum: u64

Full state checksum (for validation)

Implementations

impl FluidDelta

pub fn compute( old_positions: &[Vec3Fix], old_velocities: &[Vec3Fix], new_positions: &[Vec3Fix], new_velocities: &[Vec3Fix], threshold: Fix128, base_frame: u64, new_frame: u64, ) -> Self

Compute delta between two states

pub fn apply( &self, base_positions: &mut [Vec3Fix], base_velocities: &mut [Vec3Fix], )

Apply delta to base state

Both base slices are bounds-checked before either one is written: a base_velocities shorter than base_positions used to panic on the velocity write after base_positions[i] had already been overwritten, leaving the pair in a half-updated state for whichever particle triggered it.

pub fn changed_count(&self) -> usize

Number of changed particles

pub fn compression_ratio(&self, total_particles: usize) -> f32

Compression ratio (1.0 = no compression, 0.0 = perfect)

Trait Implementations

impl Clone for FluidDelta

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 FluidDelta

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

Formats the value using the given formatter.