@threlte/extras/dist/utilities/meshBounds.js

Utilities, abstractions and plugins for your Threlte apps

import { Matrix4, Ray, Sphere, Vector3 } from 'three';
const sphere = new Sphere();
const inverseMatrix = new Matrix4();
const ray = new Ray();
const v = new Vector3();
export const meshBounds = function (raycaster, intersects) {
    if (this.geometry.boundingSphere === null) {
        this.geometry.computeBoundingSphere();
    }
    sphere.copy(this.geometry.boundingSphere ?? sphere);
    sphere.applyMatrix4(this.matrixWorld);
    if (!raycaster.ray.intersectsSphere(sphere)) {
        return;
    }
    inverseMatrix.copy(this.matrixWorld).invert();
    ray.copy(raycaster.ray).applyMatrix4(inverseMatrix);
    if (this.geometry.boundingBox !== null &&
        ray.intersectBox(this.geometry.boundingBox, v) === null) {
        return;
    }
    const distance = v.distanceTo(raycaster.ray.origin);
    const point = v.clone();
    intersects.push({
        distance,
        point,
        object: this
    });
};