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城市建筑数据的三维白膜建模,属于三维建模领域里面,最原始也是最简单的建模了,模型体现的就是一个一个白色的盒子,方式就是吧建筑轮廓直接按照指定的高度拉伸即可。
1、生成方式
有三种方式可以生成:
a)纯代码绘制:这种方式处理起来也很简单,根据建筑轮廓,可以绘制多边形、墙体等Entity对象,或者PolygonGeometry、WallGeometry等Primitive对象。
b)建模软件自动建模:
这种方式需要建模软件能够根据属性参数进行自动化建模,同时,还需要软件数据格式支持(CAD/SHP/GEOJSON/KML等),三维建模数据导出格式支持(OBJ/DAE/3DTILES等)。
c)SHP -> 3DTILES 建模,这种方式是最简单的,无需其他的操作,直接一步到位。
2、SHP文件直接建膜
使用CesiumLab实现,点击通用模型切片。选择需要处理的shape数据,加载后,后边有个设置,设置里面有个建筑高度,道路水系等一般都是固定高度,房屋要根据高度字段来进行设置。属性字段可以根据需要选取,也可以全选。存储类型:散列。然后选择输出路径输出既可,最好输出路径不要带中文。