Synchronizing 3D Object Animations with UI Interactions using Theater.js

Introduction: Theater.js is a powerful animation library that allows for smooth, scriptable animations. When combined with Three.js, it enables developers to create immersive experiences where 3D objects animate in response to user interactions such as scrolling, clicking, or hovering over elements.

Implementation: To synchronize UI interactions with 3D animations, we can use Theater.js to animate properties of Three.js objects dynamically. For example, linking an HTML button click to rotate a cube:

const theater = theaterJS();
theater.addActor("cube", { rotation: { x: 0, y: 0, z: 0 } });

document.getElementById("animateBtn").addEventListener("click", () => {
    theater.getActor("cube").play({
        rotation: { y: Math.PI * 2 },
    });
});

Conclusion: By integrating Theater.js with UI events, developers can create highly interactive and visually appealing experiences in Three.js applications.