@thi.ng/boids/behaviors/attraction.js

n-dimensional boids simulation with modular behavior system

import { closestPointPolyline } from "@thi.ng/geom-closest-point";
import { __ensureFn } from "../internal/ensure.js";
const attractPolyline = (points, closed, lookahead = 1, weight = 1) => {
  const closest = [];
  const pos = [];
  return {
    weight: __ensureFn(weight),
    update: (boid) => {
      const { add, normalize } = boid.api;
      return closestPointPolyline(
        lookahead !== 0 ? add(
          pos,
          normalize(pos, boid.vel.curr, lookahead),
          boid.pos.curr
        ) : boid.pos.curr,
        points,
        closed,
        closest
      ) ? boid.steerTowards(closest) : boid.api.ZERO;
    }
  };
};
export {
  attractPolyline
};