face-api/src/classes/FaceLandmarks68.ts

import { getCenterPoint } from '../utils/index';
import { FaceLandmarks } from './FaceLandmarks';
import { Point } from './Point';

export class FaceLandmarks68 extends FaceLandmarks {
  public getJawOutline(): Point[] {
    return this.positions.slice(0, 17);
  }

  public getLeftEyeBrow(): Point[] {
    return this.positions.slice(17, 22);
  }

  public getRightEyeBrow(): Point[] {
    return this.positions.slice(22, 27);
  }

  public getNose(): Point[] {
    return this.positions.slice(27, 36);
  }

  public getLeftEye(): Point[] {
    return this.positions.slice(36, 42);
  }

  public getRightEye(): Point[] {
    return this.positions.slice(42, 48);
  }

  public getMouth(): Point[] {
    return this.positions.slice(48, 68);
  }

  protected override getRefPointsForAlignment(): Point[] {
    return [
      this.getLeftEye(),
      this.getRightEye(),
      this.getMouth(),
    ].map(getCenterPoint);
  }
}