Three-Dimensional Entities in a Three-Dimensional Field: Triangles and Multipatches
Triangles are plane, three-sided polygons used in the TIN data model, where each triangle has a calculated maximum slope and a direction (aspect). Further, each point on or within the triangle has a “z” value such as elevation.
Multipatches are the outer surface, or shell, of features that occupy a discrete area or volume in three-dimensional space. For example, a representation of a building (discussed in Chapter 9).
Get Introducing Geographic Information Systems with ArcGIS: A Workbook Approach to Learning GIS, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
