@thi.ng/boids/constrain.js

n-dimensional boids simulation with modular behavior system

import { clamp2 as $clamp2, clamp3 as $clamp3 } from "@thi.ng/vectors/clamp";
const clamp2 = (min, max) => (p) => $clamp2(p, p, min, max);
const clamp3 = (min, max) => (p) => $clamp3(p, p, min, max);
const __wrap = (p, i, x, min, max) => {
  if (x < min || x > max) {
    p[i] = x < min ? x - min + max : x > max ? x - max + min : x;
    return true;
  }
};
const wrap2 = (min, max) => (p, boid) => {
  if (__wrap(p, 0, p[0], min[0], max[0]) || __wrap(p, 1, p[1], min[1], max[1]))
    boid.pos.reset(p);
  return p;
};
const wrap3 = (min, max) => (p, boid) => {
  if (__wrap(p, 0, p[0], min[0], max[0]) || __wrap(p, 1, p[1], min[1], max[1]) || __wrap(p, 2, p[2], min[2], max[2]))
    boid.pos.reset(p);
  return p;
};
export {
  clamp2,
  clamp3,
  wrap2,
  wrap3
};