Method getFallbackBounds

src/map-link.js:872–913

(projection)

    return bnds;
  }
  getFallbackBounds(projection) {
    let bnds;

    let zoom = 0;
    let metaExtent = this.parentElement.getMeta('extent');
    if (metaExtent) {
      let content = Util._metaContentToObject(
          metaExtent.getAttribute('content')
        ),
        cs;

      zoom = content.zoom || zoom;

      let metaKeys = Object.keys(content);
      for (let i = 0; i < metaKeys.length; i++) {
        if (!metaKeys[i].includes('zoom')) {
          cs = Util.axisToCS(metaKeys[i].split('-')[2]);
          break;
        }
      }
      let axes = Util.csToAxes(cs);
      bnds = Util.boundsToPCRSBounds(
        bounds(
          point(
            +content[`top-left-${axes[0]}`],
            +content[`top-left-${axes[1]}`]
          ),
          point(
            +content[`bottom-right-${axes[0]}`],
            +content[`bottom-right-${axes[1]}`]
          )
        ),
        zoom,
        projection,
        cs
      );
    } else {
      let crs = M[projection];
      bnds = crs.options.crs.pcrs.bounds;
    }
    return bnds;
  }
  getBase() {
    let layer = this.getRootNode().host;
    //