Struct ThreeDrives 

pub struct ThreeDrives { /* private fields */ }

Three Drives — a symmetric harmonic pattern of three drives separated by two retracements, read from the last seven pivots. Each drive extends the retracement that precedes it, so the seven pivots span six alternating legs R1 D1 R2 D2 R3 D3:

D1 / R1 ∈ [1.13, 1.75]        (each drive extends the leg before it)
D2 / R2 ∈ [1.13, 1.75]
D3 / R3 ∈ [1.13, 1.75]
D1 ≈ D2 ≈ D3 (within 20%)     (the three drives are similar in size)
R1 ≈ R2 ≈ R3 (within 30%)     (the retracements between them are similar)

The third drive is what separates this from a plain two-push extension: a structure that stops after two drives is not a match, it is an incomplete pattern the detector keeps waiting on.

Output is +1.0 (bullish, terminal D a swing low — drives down), -1.0 (bearish, drives up), or 0.0; never None. See crates/wickra-core/src/indicators/three_drives.rs.

Implementations

impl ThreeDrives

pub const fn new() -> Self

Construct a new Three Drives detector.

Trait Implementations

impl Clone for ThreeDrives

fn clone(&self) -> ThreeDrives

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThreeDrives

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

Formats the value using the given formatter.

impl Default for ThreeDrives

fn default() -> Self

Returns the “default value” for a type.

impl Indicator for ThreeDrives

type Input = Candle

Type of one input data point (typically f64 for a price, or Candle / Tick).

type Output = f64

Type of one output value.

fn update(&mut self, candle: Candle) -> Option<f64>

Feed one new data point into the indicator and return the freshly computed output, or None if there is no value for this input.

fn reset(&mut self)

Reset all internal state, leaving the indicator equivalent to a freshly constructed instance with the same parameters.

fn warmup_period(&self) -> usize

Number of inputs required before the first non-None output can be produced.

fn is_ready(&self) -> bool

Whether the indicator has emitted at least one value since the last reset.

fn name(&self) -> &'static str

Stable, human-readable indicator name. Used by chaining and diagnostics.