Method needsRedraw

modules/core/src/lib/deck.ts:570–602

* Check if a redraw is needed * @returns `false` or a string summarizing the redraw reason

(
    opts: {
      /** Reset the redraw flag afterwards. Default `true` */
      clearRedrawFlags: boolean;
    } = {clearRedrawFlags: false}
  )

   * @returns `false` or a string summarizing the redraw reason
   */
  needsRedraw(
    opts: {
      /** Reset the redraw flag afterwards. Default `true` */
      clearRedrawFlags: boolean;
    } = {clearRedrawFlags: false}
  ): false | string {
    if (!this.layerManager) {
      // Not initialized or already finalized
      return false;
    }
    if (this.props._animate) {
      return 'Deck._animate';
    }

    let redraw: false | string = this._needsRedraw;

    if (opts.clearRedrawFlags) {
      this._needsRedraw = false;
    }

    const viewManagerNeedsRedraw = this.viewManager!.needsRedraw(opts);
    const layerManagerNeedsRedraw = this.layerManager.needsRedraw(opts);
    const effectManagerNeedsRedraw = this.effectManager!.needsRedraw(opts);
    const deckRendererNeedsRedraw = this.deckRenderer!.needsRedraw(opts);

    redraw =
      redraw ||
      viewManagerNeedsRedraw ||
      layerManagerNeedsRedraw ||
      effectManagerNeedsRedraw ||
      deckRendererNeedsRedraw;
    return redraw;
  }

  /**
   * Redraw the GL context