Struct SpringNetwork 

pub struct SpringNetwork { /* private fields */ }

Sparse undirected collection keyed by particle pairs.

Implementations

impl SpringNetwork

pub fn new() -> Self

Examples found in repository

examples/basic_particle.rs (line 12)

fn simulate() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    let mut particles = create_template(2, 2)?;
    particles.set_attribute_vector(ATTR_R, 0, &[0.25, 0.5])?;
    particles.set_attribute_vector(ATTR_R, 1, &[0.75, 0.5])?;
    set_mass(&mut particles, 0, 2.0)?;
    let mut springs = SpringNetwork::new();
    springs.insert((0, 1), Spring::new(1.0, 0.4, None)?)?;
    let boundary = ReflectBox::new(&[0.0, 0.0], &[1.0, 1.0])?;
    let mut thermostat = LangevinThermostat::new(
        0.01,
        0.1,
        ResolvedRng::new(42, RngMethod::IndexedSplitMix64),
        ParticleSelection::AliveOnly,
    )?;
    let mut integrator = SemiImplicitEuler;
    for step in 0..20 {
        // Force modules accumulate acceleration; each step starts from zero.
        particles.attribute_mut::<f64>(ATTR_A)?.fill(0.0);
        springs.apply(&mut particles, ParticleSelection::AliveOnly)?;
        integrator.apply(&mut particles, 0.01)?;
        boundary.apply_to_particles(&mut particles)?;
        thermostat.apply(&mut particles, 0.01)?;
        if (step + 1) % 10 == 0 {
            let summary = kinetic_summary(&particles, ParticleSelection::AliveOnly)?;
            println!(
                "step {}: KE={}, temperature={}",
                step + 1,
                summary.energy,
                summary.temperature
            );
        }
    }
    Ok(())
}

pub fn with_capacity(edge_capacity: usize) -> Self

Reserves edge storage without imposing a particle count.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn minimum_particle_count(&self) -> usize

Smallest particle count capable of containing every current endpoint.

pub fn insert( &mut self, pair: (usize, usize), law: Spring, ) -> Result<Option<Spring>, SpringNetworkError>

Inserts or replaces one pair after validating the complete request.

Examples found in repository

examples/basic_particle.rs (line 13)

fn simulate() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    let mut particles = create_template(2, 2)?;
    particles.set_attribute_vector(ATTR_R, 0, &[0.25, 0.5])?;
    particles.set_attribute_vector(ATTR_R, 1, &[0.75, 0.5])?;
    set_mass(&mut particles, 0, 2.0)?;
    let mut springs = SpringNetwork::new();
    springs.insert((0, 1), Spring::new(1.0, 0.4, None)?)?;
    let boundary = ReflectBox::new(&[0.0, 0.0], &[1.0, 1.0])?;
    let mut thermostat = LangevinThermostat::new(
        0.01,
        0.1,
        ResolvedRng::new(42, RngMethod::IndexedSplitMix64),
        ParticleSelection::AliveOnly,
    )?;
    let mut integrator = SemiImplicitEuler;
    for step in 0..20 {
        // Force modules accumulate acceleration; each step starts from zero.
        particles.attribute_mut::<f64>(ATTR_A)?.fill(0.0);
        springs.apply(&mut particles, ParticleSelection::AliveOnly)?;
        integrator.apply(&mut particles, 0.01)?;
        boundary.apply_to_particles(&mut particles)?;
        thermostat.apply(&mut particles, 0.01)?;
        if (step + 1) % 10 == 0 {
            let summary = kinetic_summary(&particles, ParticleSelection::AliveOnly)?;
            println!(
                "step {}: KE={}, temperature={}",
                step + 1,
                summary.energy,
                summary.temperature
            );
        }
    }
    Ok(())
}

pub fn insert_many( &mut self, entries: impl IntoIterator<Item = ((usize, usize), Spring)>, ) -> Result<(), SpringNetworkError>

Applies a batch atomically. Duplicate pairs in the batch are rejected.

pub fn get(&self, pair: (usize, usize)) -> Option<&Spring>

pub fn remove( &mut self, pair: (usize, usize), ) -> Result<Option<Spring>, SpringNetworkError>

pub fn iter(&self) -> impl Iterator<Item = ((usize, usize), &Spring)> + '_

pub fn clear(&mut self)

pub fn apply( &self, objects: &mut PhysObj, selection: ParticleSelection, ) -> Result<(), SpringNetworkError>

Adds Hooke-law acceleration contributions to canonical particle state. Accumulates contributions directly in stable edge-slot order after validating all endpoints and inverse masses. Dense state needs no full scratch. Adding each edge to existing acceleration can round differently from summing a temporary contribution column first. Shared destinations are updated serially; no per-worker full-system buffers are allocated.

Examples found in repository

examples/basic_particle.rs (line 25)

fn simulate() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    let mut particles = create_template(2, 2)?;
    particles.set_attribute_vector(ATTR_R, 0, &[0.25, 0.5])?;
    particles.set_attribute_vector(ATTR_R, 1, &[0.75, 0.5])?;
    set_mass(&mut particles, 0, 2.0)?;
    let mut springs = SpringNetwork::new();
    springs.insert((0, 1), Spring::new(1.0, 0.4, None)?)?;
    let boundary = ReflectBox::new(&[0.0, 0.0], &[1.0, 1.0])?;
    let mut thermostat = LangevinThermostat::new(
        0.01,
        0.1,
        ResolvedRng::new(42, RngMethod::IndexedSplitMix64),
        ParticleSelection::AliveOnly,
    )?;
    let mut integrator = SemiImplicitEuler;
    for step in 0..20 {
        // Force modules accumulate acceleration; each step starts from zero.
        particles.attribute_mut::<f64>(ATTR_A)?.fill(0.0);
        springs.apply(&mut particles, ParticleSelection::AliveOnly)?;
        integrator.apply(&mut particles, 0.01)?;
        boundary.apply_to_particles(&mut particles)?;
        thermostat.apply(&mut particles, 0.01)?;
        if (step + 1) % 10 == 0 {
            let summary = kinetic_summary(&particles, ParticleSelection::AliveOnly)?;
            println!(
                "step {}: KE={}, temperature={}",
                step + 1,
                summary.energy,
                summary.temperature
            );
        }
    }
    Ok(())
}

Trait Implementations

impl Clone for SpringNetwork

fn clone(&self) -> SpringNetwork

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpringNetwork

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

Formats the value using the given formatter.

impl Default for SpringNetwork

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SpringNetwork

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SpringNetwork

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.