React threejs объединяет две трубы, чтобы создать тройник с CSG, который не работает должным образом

import React, { Component } from 'react';
import * as THREE from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls';
import { CSG } from '@enable3d/three-graphics/jsm/csg';

export default class TubeViewer extends Component {
    componentDidMount() {
        //Add Scene
        this.scene = new THREE.Scene();

        //Add Renderer
        this.renderer = new THREE.WebGLRenderer({ antialias: true });
        this.renderer.setClearColor('#808080');
        this.renderer.shadowMap.enabled = true;
        this.renderer.shadowMap.type = THREE.PCFSoftShadowMap;
        this.renderer.setPixelRatio(window.devicePixelRatio);
        this.renderer.setSize(window.innerWidth, window.innerHeight);
        this.mount.appendChild(this.renderer.domElement);

        //Add Camera
        const fov = 60;
        const aspect = window.innerWidth / window.innerHeight;
        const near = 1.0;
        const far = 1000.0;
        this.camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
        this.camera.position.set(1, aspect, 1, 1000);


        //Tee-piece

        const curve1 = new THREE.LineCurve(new THREE.Vector3(2, 0, 0), new THREE.Vector3(2, 0, 0.1));
        const curve11 = new THREE.LineCurve(new THREE.Vector3(2.0, 0, 0.05), new THREE.Vector3(2.05, 0, 0.05));

        const geometry1 = new THREE.TubeGeometry(curve1, 20, 0.025, 8, false);
        const geometry2 = new THREE.TubeGeometry(curve2, 20, 0.025, 8, false);

        const material = new THREE.MeshBasicMaterial({ color: '#C0C0C0' });

        const mesh1 = new THREE.Mesh(geometry1, material);
        const mesh2 = new THREE.Mesh(geometry2, material);

        const mesh3 = CSG.union(mesh1, mesh2);

        this.scene.add(mesh3);


        //Add raycaster to for interactivity
        this.raycaster = new THREE.Raycaster();
        this.mouse = new THREE.Vector2();

        this.renderer.domElement.addEventListener('click', onClick.bind(this), false);

        function onClick(event) {
            event.preventDefault();

            this.mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
            this.mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;

            this.raycaster.setFromCamera(this.mouse, this.camera);

            var intersects = this.raycaster.intersectObjects(this.scene.children, true);

            if (intersects.length > 0) {
                console.log('Intersection:', intersects[0]);
                //console.log(intersects[0].object.uuid);
                // console.log(`GUID: ${intersects[0]}`);
                let object = intersects[0].object;

                object.material.color.set(Math.random() * 0xffffff);
            }
        }

        //Settings
        //Add Camera Controls
        const controls = new OrbitControls(this.camera, this.renderer.domElement);
        controls.addEventListener('change', this.render); // use if there is no animation loop
        controls.minDistance = 2;
        controls.maxDistance = 10;
        controls.target.set(0, 0, -0.2);
        controls.update();

        ///Add AMBIENT LIGHT
        let light = new THREE.DirectionalLight(0xffffff, 1.0);
        light.position.set(20, 100, 10);
        light.target.position.set(0, 0, 0);
        light.castShadow = true;
        light.shadow.bias = -0.001;
        light.shadow.mapSize.width = 2048;
        light.shadow.mapSize.height = 2048;
        light.shadow.camera.near = 0.1;
        light.shadow.camera.far = 500.0;
        light.shadow.camera.near = 0.5;
        light.shadow.camera.far = 500.0;
        light.shadow.camera.left = 100;
        light.shadow.camera.right = -100;
        light.shadow.camera.top = 100;
        light.shadow.camera.bottom = -100;
        this.scene.add(light);
        light = new THREE.AmbientLight(0xffffff, 0.7);
        this.scene.add(light);

        //Start animation
        this.start();
    }

    //Unmount when animation has stopped
    componentWillUnmount() {
        this.stop();
        this.mount.removeChild(this.renderer.domElement);
    }

    //Function to start animation
    start = () => {
        //Rotate Models
        if (!this.frameId) {
            this.frameId = requestAnimationFrame(this.animate);
        }
    };

    //Function to stop animation
    stop = () => {
        cancelAnimationFrame(this.frameId);
    };

    //Animate models here
    animate = () => {
        //ReDraw scene with camera and scene object
        if (this.cubeMesh) this.cubeMesh.rotation.y += 0.01;
        this.renderScene();
        this.frameId = window.requestAnimationFrame(this.animate);
    };

    //Render the scene
    renderScene = () => {
        if (this.renderer) this.renderer.render(this.scene, this.camera);
    };

    render() {
        return (
            <div
                style={{ width: '800px', height: '800px' }}
                ref={(mount) => {
                    this.mount = mount;
                }}
            />
        );
    }
}

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