Struct SeparatingLines 

pub struct SeparatingLines { /* private fields */ }

Separating Lines — a 2-bar continuation. After a counter-trend candle, the next candle of the opposite colour opens right back at the prior open and runs as an opening marubozu in the trend direction, so the trend “separates” from the pullback and resumes.

long body = |close − open| >= 0.5 * (high − low)
bar1, bar2 opposite colours
bar2 opens at bar1's open                 (|open2 − open1| <= 0.05 · range1)
bar2 is a long opening marubozu in its direction
  white bar2: open2 == low2  (no lower shadow)  -> +1.0
  black bar2: open2 == high2 (no upper shadow)  -> −1.0

Output is +1.0 (bullish continuation) or −1.0 (bearish continuation) when the pattern completes and 0.0 otherwise. The first bar always returns 0.0 because the two-bar window is not yet filled. Open-equality and marubozu thresholds follow the geometric house style rather than TA-Lib’s rolling averages. Pattern-shape check only — no trend filter is applied; combine with a trend indicator for actionable signals.

Signed ±1 encoding

This detector emits the uniform candlestick sign convention shared across the pattern family — +1.0 bullish, −1.0 bearish, 0.0 no pattern — so it drops straight into a machine-learning feature matrix where the two directions occupy a single dimension.

Example

use wickra_core::{Candle, Indicator, SeparatingLines};

let mut indicator = SeparatingLines::new();
indicator.update(Candle::new(12.0, 12.1, 9.9, 10.0, 1.0, 0).unwrap());
let out = indicator
    .update(Candle::new(12.0, 14.1, 12.0, 14.0, 1.0, 1).unwrap());
assert_eq!(out, Some(1.0));

Implementations

impl SeparatingLines

pub const fn new() -> Self

Construct a new Separating Lines detector.

Trait Implementations

impl Clone for SeparatingLines

fn clone(&self) -> SeparatingLines

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SeparatingLines

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

Formats the value using the given formatter.

impl Default for SeparatingLines

fn default() -> SeparatingLines

Returns the “default value” for a type.

impl Indicator for SeparatingLines

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 the indicator is still warming up.

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.