Three.js Keyframe Animation Interpolation

Based on your project, I can provide some information about keyframe animation interpolation in Three.js.

Interpolation Types in Three.js

Three.js provides several interpolation methods for keyframe animations:

• CubicInterpolant: Provides smooth cubic spline interpolation, useful for natural-looking motion
• DiscreteInterpolant: Provides step-wise interpolation with no blending between values
• LinearInterpolant: Provides simple linear interpolation between keyframes
• QuaternionLinearInterpolant: Specifically designed for interpolating quaternions (rotations)

Improving Custom Keyframe Interpolation

When working with custom keyframe interpolation in Three.js, consider these approaches:

1. Choose the right interpolant for your needs: Different animation types benefit from different interpolation methods. For example:

   • Use QuaternionLinearInterpolant for rotations to avoid gimbal lock
   • Use CubicInterpolant for smooth, natural motion
   • Use DiscreteInterpolant when you need abrupt changes

2. Optimize keyframe density: Too many keyframes can impact performance, while too few might not capture the desired motion

3. Consider easing functions: Custom easing can enhance the feel of animations

4. Debug visualization: Add helper objects to visualize animation paths

If you need specific advice on your implementation, I would need more details about what particular aspects of the keyframe interpolation you're trying to improve or debug.