@thi.ng/geom/aabb.js

Functional, polymorphic API for 2D geometry types & SVG generation

import { SQRT2_2 } from "@thi.ng/math/api";
import { add3 } from "@thi.ng/vectors/add";
import { ZERO3 } from "@thi.ng/vectors/api";
import { maddN3 } from "@thi.ng/vectors/maddn";
import { max3 } from "@thi.ng/vectors/max";
import { min3 } from "@thi.ng/vectors/min";
import { sub3 } from "@thi.ng/vectors/sub";
import { subN3 } from "@thi.ng/vectors/subn";
import { AABB } from "./api/aabb.js";
import { __argsVV } from "./internal/args.js";
function aabb(...args) {
  return new AABB(...__argsVV(args));
}
const aabbFromMinMax = (min, max, attribs) => new AABB(min, sub3([], max, min), attribs);
const aabbFromMinMaxWithMargin = (min, max, margin, attribs) => aabbFromMinMax(min, max, attribs).offset(margin);
const aabbFromCentroid = (centroid, size, attribs) => new AABB(maddN3([], size, -0.5, centroid), size, attribs);
const aabbWithCentroidAndMargin = (centroid, size, margin, attribs) => aabbFromCentroid(centroid, size, attribs).offset(margin);
const intersectionAABB = (a, b) => {
  const p = max3([], a.pos, b.pos);
  const q = min3(null, add3([], a.pos, a.size), add3([], b.pos, b.size));
  const size = max3(null, sub3(null, q, p), ZERO3);
  return size[0] > 0 && size[1] > 0 && size[2] > 0 ? new AABB(p, size) : void 0;
};
function inscribedAABB(...args) {
  let pos, r;
  if (args.length === 1) {
    const c = args[0];
    pos = c.pos;
    r = c.r;
  } else {
    [pos, r] = args;
  }
  r *= SQRT2_2;
  return aabb(subN3([], pos, r), r * 2);
}
export {
  aabb,
  aabbFromCentroid,
  aabbFromMinMax,
  aabbFromMinMaxWithMargin,
  aabbWithCentroidAndMargin,
  inscribedAABB,
  intersectionAABB
};