AnimationMixer.update()

AnimationMixer.update() is a method in the Three.js library that allows the user to update the mixer's animation data.

Syntax

animationMixer.update( deltaTime );

Parameters

• deltaTime [optional] : A number that indicates the delta time since the last update, in seconds. If not provided, the value is computed automatically.

Return Value

• None

Description

The AnimationMixer class is responsible for handling all of the animations within a given scene. The update() method is an essential component of the animation system, as it updates the animation data by invoking the animate() function on all the animations that are currently being controlled by the mixer.

When the update() method is called, it takes the delta time as a parameter. Delta time is simply the amount of time that has passed since the last time the update() method was called. If no delta time is specified, the method will automatically calculate the delta time using the current system time.

By updating the mixer's animation data, the update() method ensures that all the animations within the scene are played back correctly. Additionally, the method can also be used to pause or stop an animation if needed.

Examples

var mixer = new THREE.AnimationMixer( mesh )

var animation = THREE.AnimationClip.findByName( animations, 'animation1' )
var action = mixer.clipAction( animation )

action.play()

function animate() {
  requestAnimationFrame( animate )

  // update the mixer with proper delta time
  mixer.update( clock.getDelta() )

  renderer.render( scene, camera )
}

This example shows how the update() method is used to update the mixer's animation data in a rendering loop. Notice how the mixer is created and used to play an animation, while the update() method is called in the animate() function. Also, note that clock.getDelta() is passed as the delta time parameter to the update() method to ensure correct playback timing.

Remarks

• The update() method should be called on every animation frame to ensure correct playback timing.
• If the delta time is not provided, the method will automatically calculate it.