Updating materials dynamically in ThreeJS runtime

I've successfully loaded an OBJ object with a material file (MTL) to a scene, which is working perfectly. The MTL file is linked to a JPG texture for the object, which I dynamically modify at runtime.

Now, my goal is to update the object with the new material (modified JPG) without having to remove and add the entire object to the scene, as this could impact performance.

Is there a method to simply re-render the object with the updated texture or re-attach the modified MTL?

mtlLoader.load("material.mtl", function (materials) {
materials.preload();
objLoader.setMaterials(materials);
objLoader.setPath("static/models/");
objLoader.load("object.obj", function (object) {
  scene.add(object);
});

Answer №1

To update the appearance of an object in your scene, simply manipulate the material without having to reload the entire object. Locate the material and modify its .map property using the following code snippet:

var textureLoader = new THREE.TextureLoader();
var newTexture = textureLoader.load('./path/to/new/image.png');
object.material.map = newTexture;

For loading new textures, utilize the TextureLoader class available in Three.js.

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