尝试使用Autodesk.AEC.LevelsExtension
扩展名-只要模型随附有关现有楼层的必需AEC数据即可:
viewer.addEventListener(Autodesk.Viewing.OBJECT_TREE_CREATED_EVENT/Autodesk.Viewing.GEOMETRY_LOADED_EVENT , //wait till design data is loaded
viewer.loadExtension('Autodesk.AEC.LevelsExtension')
)
您可以使用model.getAecModelData()
检查模型是否包含必要的数据