Struct ShootingStar 

pub struct ShootingStar { /* private fields */ }

Shooting Star — a single-bar bearish reversal candidate.

A Shooting Star has the same geometry as an Inverted Hammer (small body near the bottom, long upper shadow ≥ 2× body, short lower shadow) but is read bearishly because it appears at the top of an uptrend.

body         = |close − open|
upper_shadow = high − max(open, close)
lower_shadow = min(open, close) − low
star         = upper_shadow >= 2 * body
              && lower_shadow <= body
              && body > 0

Output is −1.0 when the shape matches, 0.0 otherwise. Pattern-shape check only — no trend filter is applied; combine with a trend indicator for actionable signals.

Signed ±1 encoding

A Shooting Star is bearish by definition, so under the uniform candlestick sign convention (+1.0 bullish, −1.0 bearish, 0.0 none) it emits −1.0 when the shape matches and 0.0 otherwise — it never emits +1.0. The same geometry read at the bottom of a downtrend is the bullish InvertedHammer, which carries the opposite sign.

Example

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

let mut indicator = ShootingStar::new();
let candle = Candle::new(10.0, 15.0, 9.9, 10.5, 1.0, 0).unwrap();
assert_eq!(indicator.update(candle), Some(-1.0));

Implementations

impl ShootingStar

pub const fn new() -> ShootingStar

Construct a new Shooting Star detector.

Trait Implementations

impl Clone for ShootingStar

fn clone(&self) -> ShootingStar

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShootingStar

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

Formats the value using the given formatter.

impl Default for ShootingStar

fn default() -> ShootingStar

Returns the “default value” for a type.

impl Indicator for ShootingStar

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.