How can I incorporate a hotspot into specific areas of the object extension model that I've integrated using three.js?

I have successfully added a click event to the model loaded using Three.js, but I am facing issues with adding click events to specific parts of the uploaded model. For instance, while I can create a click event for the entire car model I imported, my goal is to trigger different actions based on where I click within the model - such as writing 'wheel' to the console when clicking on the wheel or 'glass' when clicking on the glass.

How can I achieve this level of interactivity?

const objLoader = new THREE.OBJLoader2();
objLoader.loadMtl('bugatti.mtl', null, (materials) => {
  objLoader.setMaterials(materials);
  objLoader.load('bugatti.obj', (event) => {
    const root = event.detail.loaderRootNode;
    scene.add(root);
    myModel = root;
       const domEvents = new THREEx.DomEvents(camera, renderer.domElement)

    domEvents.addEventListener(myModel, 'click', event => {
        console.log("car");
    });

Answer №1

During the design phase, it is recommended to address this issue by constructing a model comprised of various independent meshes that are combined to form a more intricate object. By following this approach, selecting individual components in frameworks like three.js (or any other 3D engine) will become significantly simpler.

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