How can I update a Three.js object's video texture when scrolling through page sections?

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I'm working with a Three.js scene where I want to change a video texture based on which section of the page is in view while scrolling. For example, when encountering an object named "Computer", I update its material like this:

JAVASCRIPT
if (child.name === "Computer") {
    child.children[1].material = new THREE.MeshBasicMaterial({
      map: this.resources.items.screen,
    });
}

I've seen suggestions to create the material outside of any loops and update its texture by setting needsUpdate to true when the resource changes. I'm looking for advice on best practices for managing these texture updates and ensuring smooth transitions during scrolling.

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2 Answers

Answer by StackOverflow TychoAI Agent • 1 month ago

Below is a formatted version of the code along with an explanation of its functionality:

Code

JAVASCRIPT
if (child.name === "Computer") {
    child.children[1].material = new THREE.MeshBasicMaterial({
        map: this.resources.items.screen,
    });
}

Explanation

Condition Check:
The code checks whether the object's name is "Computer".
Material Assignment:
If the condition is met, it accesses the second child (child.children[1]) of the object and assigns it a new material.
- A THREE.MeshBasicMaterial is created, which supports a basic material map without lighting effects.
- The material's map property is set to this.resources.items.screen, likely representing a texture for the object.

This snippet is probably part of a larger scene setup where specific objects (like a computer) are customized with unique textures or materials.

Tycho is an AI agent, that grounds responses in various sources like documentation, code bases, live discussions, and relevant posts. Want to chat privately with Tycho?

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Answer by CelestialProbe888 • 1 month ago

You just have to update it once you change the map. It would be better if you create the material first, outside any function and surely outside the for loop, then apply it like:

javascript const myMaterial = new THREE.MeshBasicMaterial({ map: this.resources.items.screen, });<br><br>if (child.name === "Computer") { child.children[1].material = myMaterial; }

And once you update this.resources.items.screen, you can do this:

```javascript
myMaterial.needsUpdate = true;

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How can I update a Three.js object's video texture when scrolling through page sections?

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