Problems with the texture using MTLLoader of three.js - three.js

Question

I'm using the MTLloader of the three.js library and I don't know why but the texture is not load. The mesh becomes completely white.
However, if I use the OBJ file provided by the examples of the three.js library, the object is loaded with its texture correctly.
Any idea?
I post the code:
function loadObj(urlObj, urlObjMtl, urlHairCompl){
var container, stats;
var camera, scene, renderer;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.z = 100;
controls = new THREE.TrackballControls( camera );
controls.rotateSpeed = 2.0;
controls.zoomSpeed = 4;
controls.panSpeed = 2;
controls.noZoom = false;
controls.noPan = false;
controls.staticMoving = false;
controls.dynamicDampingFactor = 0.3;
// scene
scene = new THREE.Scene();
var ambient = new THREE.AmbientLight( 0x444444 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0xffeedd );
directionalLight.position.set( 0, 0, 1 ).normalize();
scene.add( directionalLight );
// model
var loader = new THREE.OBJMTLLoader();
if (urlObj !== null){
loader.load( urlObj, urlObjMtl, function ( object ) {
object.position.y = 0;
object.position.z = -10;
scene.add( object );
} );
}
var display = document.getElementById('display') ;
renderer = new THREE.WebGLRenderer( { canvas: display } );
// window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
controls.handleResize();
}
function animate() {
//requestAnimationFrame( animate );
//render();
requestAnimationFrame( animate );
controls.update();
renderer.render( scene, camera );
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
}
Thanks a lot

Answer 1

Open in txt editor your .obj file and search for string reference -nan inside of it.
Replace the -nan value with 0.000000. Sometimes the .obj file get -nan when exported and than mapping textures fails in three.js.
Example:
vn -nan -nan -nan" should be "vn 0.000000 0.000000 0.000000
That was my case. With -nan it will load with OBJLoader, but when added the .mtl [OBJMTLLoader] it was failing. So fix for me was replacing the -nan with 0.000000.