![]() ArcGIS can render 3D models as features in a multipatch feature class. Solid models are common in CAD, engineering, and other applications representing solid objects. However, if one wanted to measure all the foot-rungs on the telephone pole, the result would be one telephone pole in x,y space, with many z-values, each one representing another rung on the way up the pole. There is a z-value at the top of the pole and a different z-value at the bottom. Multipatches may represent geometric objects, like spheres and cubes, or real-world objects, like buildings and trees.įor example, a telephone pole could be represented as a multipatch object. ![]() ![]() Multipatches are a type of geometry composed of planar three-dimensional rings and triangles, used in combination to model objects that occupy discrete areas or volumes in three-dimensional space. True 3D surfaces are sometimes known as solid model surfaces, and ArcGIS handles these through multipatch features. A functional surface is continuous, and all surface locations may have only one elevation, or z, value per x,y coordinate. ArcGIS has the ability to work with both 2.5D and true 3D data.ĪrcGIS 3D Analyst can store 2.5D functional surfaces, such as raster, triangulated irregular network (TIN), and terrain data. Many software applications today actually store and display data only in 2.5D. This adds perspective to the visualization capabilities of GIS. Using the ArcGIS 3D Analyst extension, functional surfaces can be displayed in two-and-a-half dimensions (2.5D) and features can be rendered as objects with surfaces in space in three dimensions (3D). Objects suited to solid modeling are buildings, machine parts, highway structures, and other objects placed on the earth's surface.Ī GIS can represent features in more than two dimensions. Multipatch Geometry The ArcGIS Format for Representing Three-Dimensional Objects
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |