@polygonjs/polygonjs/dist/src/core/geometry/BoundingBox.js

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

"use strict";
import { Box3, Vector3 } from "three";
function traverseAndInitBoundingBox(object) {
  let bbox;
  object.traverse((childObject) => {
    if (!bbox) {
      const geometry = childObject.geometry;
      if (geometry) {
        childObject.updateWorldMatrix(true, false);
        geometry.computeBoundingBox();
        if (geometry.boundingBox) {
          bbox = geometry.boundingBox.clone();
          bbox.applyMatrix4(childObject.matrixWorld);
        }
      }
    }
  });
  return bbox;
}
export function computeBoundingBoxFromObject3D(object) {
  const bbox = traverseAndInitBoundingBox(object);
  if (bbox) {
    bbox.expandByObject(object);
  }
  return bbox;
}
export function computeBoundingBoxFromObject3Ds(objects) {
  let bbox;
  for (const object of objects) {
    computeBoundingBoxFromObject3D(object);
  }
  if (bbox) {
    for (const object of objects) {
      if (bbox) {
        bbox.expandByObject(object);
      }
    }
  }
  bbox = bbox || new Box3(new Vector3(-1, -1, -1), new Vector3(1, 1, 1));
  return bbox;
}