TextureLoader

const texture = new THREE.TextureLoader().load( './assets/mytexture.jpg' );

const geometry = new THREE.SphereGeometry( 3, 32, 16 ); // radisu, widthSegments, heightSegment
const material = new THREE.MeshLambertMaterial( {  map: texture } ); // map parameter를 이용하여 texture를 전달
const sphere = new THREE.Mesh( geometry, material );
this.scene.add( sphere )