@polygonjs/polygonjs/dist/src/core/SetUtils.js

node-based WebGL 3D engine https://polygonjs.com

"use strict";
export function setFirstValue(set) {
  for (const item of set) {
    return item;
  }
}
let i = 0;
export function setToArray(set, target) {
  target.length = set.size;
  i = 0;
  for (const item of set) {
    target[i] = item;
    i++;
  }
  return target;
}
export function setCopy(src, target) {
  target.clear();
  for (const item of src) {
    target.add(item);
  }
  return target;
}
export function setUnion(set0, set1, target) {
  target.clear();
  for (const item of set0) {
    target.add(item);
  }
  for (const item of set1) {
    target.add(item);
  }
  return target;
}
export function setIntersection(set0, set1, target) {
  target.clear();
  for (const item of set0) {
    if (set1.has(item)) {
      target.add(item);
    }
  }
  for (const item of set1) {
    if (set0.has(item)) {
      target.add(item);
    }
  }
  return target;
}
export function setDifference(set0, set1, target) {
  target.clear();
  for (const item of set0) {
    if (!set1.has(item)) {
      target.add(item);
    }
  }
  return target;
}
export function setXOR(set0, set1, target) {
  target.clear();
  for (const item of set0) {
    if (!set1.has(item)) {
      target.add(item);
    }
  }
  for (const item of set1) {
    if (!set0.has(item)) {
      target.add(item);
    }
  }
  return target;
}