Interpolation Methods in Three.js

Based on your current approach of using Vector3 arrays to create a curve and then using getPoint() for animation, there are several interpolation options in Three.js that might offer improvements depending on your specific needs.

Available Interpolants in Three.js

Three.js provides several interpolation methods that could potentially be more efficient or better suited for your animation needs:

• LinearInterpolant: Provides simple linear interpolation between points
• CubicInterpolant: Offers cubic spline interpolation for smoother transitions
• DiscreteInterpolant: Steps between discrete values without interpolation
• QuaternionLinearInterpolant: Specifically designed for quaternion interpolation (rotations)

Recommendations

If you're animating camera or object movement along a path, you might want to consider:

1. For smoother motion: Use CubicInterpolant or one of Three.js's curve classes like CatmullRomCurve3 which provides natural-looking curved paths through your points

2. For performance: If your path has many points, LinearInterpolant might be more efficient than cubic interpolation while still providing decent results

3. For camera animations: If your animation involves rotations, consider using QuaternionLinearInterpolant specifically for the rotation component

The current approach using getPoint() with a parameter range of 0-1 is a standard and effective method. The main consideration would be which curve type you're using underneath and whether it matches your needs for smoothness versus performance.

Without knowing more specifics about your implementation, it's difficult to recommend a definitively "better" approach, but these interpolation options provide different trade-offs that might better suit your particular animation requirements.