Class Node

src/node/node.js:24–611

const _uniforms = Symbol('uniforms');

export default class Node {
  static Attr = Attr;

  constructor(attrs = {}) {
    this.attributes = new this.constructor.Attr(this);
    this[_resolution] = {width: 300, height: 150};
    Object.assign(this.attributes, attrs);
    // if(Object.seal) {
    //   Object.seal(this.attributes);
    // }
    this[_animations] = new Set();
    this[_eventListeners] = {};
    this[_captureEventListeners] = {};
  }

  get ancestors() {
    let parent = this.parent;
    const ret = [];
    while(parent) {
      ret.push(parent);
      parent = parent.parent;
    }
    return ret;
  }

  get animations() {
    return this[_animations];
  }

  get filters() {
    return this[_filters] || (this.parent && this.parent.filters);
  }

  get isVisible() {
    return false;
  }

  get layer() {
    if(this.parent) return this.parent.layer;
    return null;
  }

  get localMatrix() {
    const m = this.transformMatrix;
    const {x, y} = this.attributes;
    m[4] += x;
    m[5] += y;
    return m;
  }

  get opacity() {
    let opacity = this.attributes.opacity;
    if(this.parent && this.parent.opacity != null) {
      opacity *= this.parent.opacity;
    }
    return opacity;
  }