怎么动态创建不规则mesh

[111861]

如题，要做个室内编辑器https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1606718514493&di=da18e89a07cc89d8f0e3782a4f3125a5&imgtype=0&src=http%3A%2F%2Fhbimg.b0.upaiyun.com%2F8061e93e8e10a6d7184bdb79d889cb78fd7672bb2ab9c-pUxTuQ_fw658

[18581391615 (bobo)]

https://docs.cocos.com/creator/manual/zh/3d/mesh.html参考cocoscreator的文档