@animech-public/playcanvas/build/playcanvas.dbg/src/scene/animation/animation.js

PlayCanvas WebGL game engine

class Key {
  constructor(time, position, rotation, scale) {
    this.time = time;
    this.position = position;
    this.rotation = rotation;
    this.scale = scale;
  }
}

/**
 * A animation node has a name and contains an array of keyframes.
 *
 * @category Animation
 */
class Node {
  /**
   * Create a new Node instance.
   */
  constructor() {
    this._name = '';
    this._keys = [];
  }
}

/**
 * An animation is a sequence of keyframe arrays which map to the nodes of a skeletal hierarchy. It
 * controls how the nodes of the hierarchy are transformed over time.
 *
 * @category Animation
 */
class Animation {
  /**
   * Create a new Animation instance.
   */
  constructor() {
    /**
     * Human-readable name of the animation.
     *
     * @type {string}
     */
    this.name = '';
    /**
     * Duration of the animation in seconds.
     *
     * @type {number}
     */
    this.duration = 0;
    this._nodes = [];
    this._nodeDict = {};
  }

  /**
   * Gets a {@link Node} by name.
   *
   * @param {string} name - The name of the {@link Node}.
   * @returns {Node} The {@link Node} with the specified name.
   */
  getNode(name) {
    return this._nodeDict[name];
  }

  /**
   * Adds a node to the internal nodes array.
   *
   * @param {Node} node - The node to add.
   */
  addNode(node) {
    this._nodes.push(node);
    this._nodeDict[node._name] = node;
  }

  /**
   * A read-only property to get array of animation nodes.
   *
   * @type {Node[]}
   */
  get nodes() {
    return this._nodes;
  }
}

export { Animation, Key, Node };