([\S\s]*?)<\/pre>/',$inText,$modelDescript);
    $metadata = json_decode($modelDescript[1], true);
    $viewClass = self::extractClassParams('view',$frameParams['class']);
    $hsSetClass = self::extractClassParams('hsset',$frameParams['class']);

    //Handle annotations and annotation sets
    if (isset($metadata['annotations'])) {
      $hotspots = [];
      $annotations = [];
      if ($hsSetClass != 'default' && isset($metadata['annotationSets'])) {
        foreach($metadata['annotationSets'][$hsSetClass] as $includeAn) {
          if (isset($metadata['annotations'][$includeAn])) {
            $annotations[$includeAn] = $metadata['annotations'][$includeAn];
          }
        }
      } else {
        $annotations = $metadata['annotations'];
      }
        foreach($annotations as $label => $an) {
        $elAnnot = Html::rawElement('div',['class' => 'HotspotAnnotation HiddenAnnotation'],$label);
        $hsDefault = array(
          'class' => 'Hotspot',
          'slot' => 'hotspot-'.(count($hotspots) +1),
          'onmousedown' => 'event.stopPropagation()',
          'ontouchstart' => 'event.stopPropagation()',
          'onclick' => 'onAnnotation(event)'
        );
        $attrHotspot = array_merge($hsDefault, $an);
        $elHotspot = Html::rawElement('button',$attrHotspot,$elAnnot.(count($hotspots) +1));
        array_push($hotspots, $elHotspot);
      }
    }

    //Set viewer configurations or use basic default if none defined
    if (isset($metadata['viewerConfig']) && isset($metadata['viewerConfig'][$viewClass])) {
      $attrModelView = $metadata['viewerConfig'][$viewClass];
    } else {
      $attrModelView = array('camera-controls' => true);
    }

    //Add important additional attributes and render model-viewer with hotspots
    $attrModelView = array_merge(['src' => $srcUrl, 'class' => 'mv-model', 'interpolation-decay' => '100'], $attrModelView);
    $attrModelView['style'] = 'width: 100%; height: 100%; min-height: 400px;';
    $elModel = Html::rawElement('model-viewer', $attrModelView, implode($hotspots));

    //Render and return container element with model-viewer
    $attrContainer = array(
      'style' => "width: 800px; height: 600px;",
      'onmousedown' => 'clearAnnotations()',
      'ontouchstart' => 'clearAnnotations()'
    );
    return Html::rawElement('div', $attrContainer, $elModel);
  }

  /**
   * Detect and return model user params from link classes
   * 
   * The best way to send information in a file link is by adding classes to the
   * link. This function parses the array of those classes and returns the information
   * or 'default'
   * 
   * @param string $paramType the type of parameter to be extracted 'view'|'hsset'
   * @param string $classList the string of class names as returned in $frameParams or default construction
   * @return string parameter name or 'default'
   */
  private static function extractClassParams(string $paramType, string $classList) {
    if (!in_array($paramType, ['view', 'hsset'])) {
      return 'default';
    }
    
    if (!isset($classList)) {
      return 'default';
    }

    $searchString = '/' . $paramType . '-(\S*)/';
    preg_match($searchString,$classList,$extractInfo);

    return ($extractInfo[1]) ? $extractInfo[1] : 'default';
  }

  /**
   * Small helper function to display information on the browser console
   * 
   * Usage:
   * echo '';
   * 
   * @param $data information to display
   * @param bool $add_script_tags true to put information is inside complete script tag
   */
  public static function console_log($data, $add_script_tags = false) {
    $command = 'console.log('. json_encode($data, JSON_HEX_TAG).');';
    if ($add_script_tags) {
        $command = '';
    }
    echo $command;
  }

  /**
   * ? But class won't work without it
   */
  function doTransform($image, $dstPath, $dstUrl, $params, $flags = 0) {
  }
}