获取模型结构

const tree = viewer.engine?.getConstructTreeData({
  type: 'level',
  name: '1F',
  includeIds: true
});

type ConstructTreeType = 'level' | 'type' | 'major';

interface ConstructTreeSearchOptions {
  type?: ConstructTreeType | ConstructTreeType[];
  name?: string;
  componentId?: string | number;
  includeIds?: boolean;
}

返回结果固定包含 level、type 和 major 三类树。未初始化或模型未加载时，返回三个空数组。