Synchronizing Diagonal Rotation Between Objects

To synchronize the rotation of Object2 with Object1, you need to apply the same rotation changes to both objects. Since Object1 has an initial rotation and Object2 starts with no rotation, you'll need to handle this difference while keeping their rotational movements synchronized.

Here's how you can achieve this:

Solution 1: Apply the Same Rotation Changes

JAVASCRIPTCopied
// Initial setup
Object1.rotation.set(-0.5, 0, 0.3);
Object2.rotation.set(0, 0, 0);

// In your animation loop
function animate() {
    // Calculate rotation increment
    const rotationIncrement = 0.05;
    
    // Apply the same rotation increment to both objects
    Object1.rotation.x += rotationIncrement;
    Object2.rotation.x += rotationIncrement;
    
    // If you need diagonal rotation, apply to other axes too
    // Object1.rotation.z += rotationIncrement * 0.6; // For example
    // Object2.rotation.z += rotationIncrement * 0.6;
    
    requestAnimationFrame(animate);
}

Solution 2: Match Absolute Rotations

If you want Object2 to exactly match Object1's rotation (including the initial offset):

JAVASCRIPTCopied
// Initial setup
Object1.rotation.set(-0.5, 0, 0.3);
Object2.rotation.set(-0.5, 0, 0.3); // Start with the same rotation

// In your animation loop
function animate() {
    // Apply rotation to Object1
    Object1.rotation.x += 0.05;
    
    // Make Object2 match Object1's rotation exactly
    Object2.rotation.copy(Object1.rotation);
    
    requestAnimationFrame(animate);
}

Solution 3: Using Quaternions for Complex Rotations

For more complex rotational synchronization, especially for diagonal rotations, quaternions can be helpful:

JAVASCRIPTCopied
// Initial setup
Object1.rotation.set(-0.5, 0, 0.3);
Object2.rotation.set(0, 0, 0);

// Create a quaternion to represent the rotation increment
const rotationQuaternion = new THREE.Quaternion();
// Set the axis of rotation (for diagonal rotation)
const rotationAxis = new THREE.Vector3(1, 0.5, 0.3).normalize();
const rotationAngle = 0.05;

// In your animation loop
function animate() {
    // Set the quaternion to represent rotation around the axis
    rotationQuaternion.setFromAxisAngle(rotationAxis, rotationAngle);
    
    // Apply the rotation to both objects
    Object1.quaternion.premultiply(rotationQuaternion);
    Object2.quaternion.premultiply(rotationQuaternion);
    
    requestAnimationFrame(animate);
}

Choose the solution that best fits your specific requirements for how the objects should rotate together.