function getCurrentModels() {
  const selector = $('#weight-select');
  const keys = sampelText.split('').map(char => 
    'U+' + char.charCodeAt(0).toString(16).toUpperCase().padStart(4, '0'));
  const modelDict = res.glyphModels[selector.val()];
  return keys.map(key => modelDict[key]);
}
Get glyph models by the selected heights
@returns { GlyphModel[] }