What are the steps to import a .obj 3D model into Three.js?

Question

What are the steps to import a .obj 3D model into Three.js?

After incorporating your advice, here is the revised code:

var renderer = new THREE.WebGLRenderer( { alpha: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
element.appendChild( renderer.domElement );

var loader = new THREE.OBJLoader(); 
loader.load(

 '3D Model/Tiend3D.obj',

 function ( object ) {
     scene.add( object );
 });

 function render() {

   window.requestAnimationFrame( render );
   renderer.render( scene, camera );

 }

 render();

I'm encountering issues with the current code for importing the 3D model. I confirmed that the 3D model is accessible by substituting its path into an existing example, where it loaded correctly. However, upon examining the code for that example, I encountered several unfamiliar elements. Can you guide me on the appropriate method for loading the .obj file and incorporating it into the scene?

javascript three.js .obj

Answer 1

Answer №1

Your code is currently only rendering the scene once before the model is loaded. Adding elements to the scene won't be visible without re-rendering.

Typically, in WebGL rendering, a requestAnimationFrame loop is used to continuously update the visual scene.

function render() {

    window.requestAnimationFrame( render );
    renderer.render( scene, camera );

}

render();

Alternatively, if you only need to render one more frame after the object is loaded, you can call render in your onLoad callback:

function ( object ) {
    scene.add( object );
    renderer.render( scene, camera );
});

Answer 2

Your code is currently only rendering the scene once before the model is loaded. Adding elements to the scene won't be visible without re-rendering.

Typically, in WebGL rendering, a requestAnimationFrame loop is used to continuously update the visual scene.

function render() {

    window.requestAnimationFrame( render );
    renderer.render( scene, camera );

}

render();

Alternatively, if you only need to render one more frame after the object is loaded, you can call render in your onLoad callback:

function ( object ) {
    scene.add( object );
    renderer.render( scene, camera );
});

Answer 3

Answer №2

If you are confident that your object has materials and you followed the advice of @Andy Ray (using the

window.requestAnimationFrame( render )

function), you may also need to add lights to properly view the scene. Place the following code snippet after declaring the renderer:

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 );

Answer 4

If you are confident that your object has materials and you followed the advice of @Andy Ray (using the

window.requestAnimationFrame( render )

function), you may also need to add lights to properly view the scene. Place the following code snippet after declaring the renderer:

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 );

What are the steps to import a .obj 3D model into Three.js?

Answer №1

Answer №2

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