MySQL Manual
11 Spatial Extensions in MySQL
- 11.2 The OpenGIS Geometry Model
- 11.2.1 The Geometry Class Hierarchy
- 11.2.2 Class
Geometry - 11.2.4 Class
Point - 11.2.7 Class
Curve - 11.2.9 Class
LineString - 11.2.12 Class
Surface - 11.2.14 Class
Polygon - 11.2.17 Class
GeometryCollection - 11.2.18 Class
MultiPoint - 11.2.21 Class
MultiCurve - 11.2.23 Class
MultiLineString - 11.2.25 Class
MultiSurface - 11.2.27 Class
MultiPolygon
11.2.12 Class Surface
A Surface is a two-dimensional geometry. It is a non-instantiable
class. Its only instantiable subclass is Polygon.
11.2.13 Surface Properties
-
A
Surfaceis defined as a two-dimensional geometry. -
The OpenGIS specification defines a simple
Surfaceas a geometry that consists of a single ``patch'' that is associated with a single exterior boundary and zero or more interior boundaries. -
The boundary of a simple
Surfaceis the set of closed curves corresponding to its exterior and interior boundaries.
