three-stdlib/misc/MorphAnimMesh.js

stand-alone library of threejs examples

import { Mesh, AnimationMixer, AnimationClip } from "three";
class MorphAnimMesh extends Mesh {
  constructor(geometry, material) {
    super(geometry, material);
    this.type = "MorphAnimMesh";
    this.mixer = new AnimationMixer(this);
    this.activeAction = null;
  }
  setDirectionForward() {
    this.mixer.timeScale = 1;
  }
  setDirectionBackward() {
    this.mixer.timeScale = -1;
  }
  playAnimation(label, fps) {
    if (this.activeAction) {
      this.activeAction.stop();
      this.activeAction = null;
    }
    const clip = AnimationClip.findByName(this, label);
    if (clip) {
      const action = this.mixer.clipAction(clip);
      action.timeScale = clip.tracks.length * fps / clip.duration;
      this.activeAction = action.play();
    } else {
      throw new Error("THREE.MorphAnimMesh: animations[" + label + "] undefined in .playAnimation()");
    }
  }
  updateAnimation(delta) {
    this.mixer.update(delta);
  }
  copy(source, recursive) {
    super.copy(source, recursive);
    this.mixer = new AnimationMixer(this);
    return this;
  }
}
export {
  MorphAnimMesh
};
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