keyframeTrack.setInterpolation()

The keyframeTrack.setInterpolation() method is a built-in function in the Three.js library, which allows developers to set up custom interpolation for keyframe animations. This method sets the interpolation type for a specific keyframe track of a particular object in the scene.

Syntax

The syntax for using keyframeTrack.setInterpolation() method is as follows:

keyframeTrack.setInterpolation( interpolationType );

Here, interpolationType is a string parameter that defines the interpolation algorithm to be used for the keyframes.

Parameters

The setInterpolation() method accepts the following parameter:

• interpolationType - A string parameter that specifies the interpolation algorithm to be used for the keyframes.

The following interpolation types are supported:

• THREE.InterpolateLinear: The default linear interpolation method used for keyframes.
• THREE.InterpolateDiscrete: A step function that returns the value of the previous keyframe until the current frame is reached.
• THREE.InterpolateSmooth: A smooth interpolation function that uses a cubic hermite spline to compute the keyframe values.

Example

Here is an example that demonstrates how to use the keyframeTrack.setInterpolation() method to set the interpolation for a keyframe track:

let keyframeTrack = new THREE.NumberKeyframeTrack( '.rotation[x]', [0, 1, 2], [0, Math.PI / 2, Math.PI] );

keyframeTrack.setInterpolation( THREE.InterpolateSmooth );

In this example, a new instance of THREE.NumberKeyframeTrack is created to define the rotation of an object around the x-axis. The setInterpolation() method is then used to set the interpolation type for the keyframes to THREE.InterpolateSmooth.

Conclusion

In conclusion, the keyframeTrack.setInterpolation() method is a useful tool for customizing the interpolation of keyframe animations in Three.js. By using this method, developers can create more dynamic and polished animations for their projects.