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MySQL 5.1 リファレンスマニュアル :: 16 Spatial Extensions :: 16.2 The OpenGIS Geometry Model :: 16.2.6 Class Surface
« 16.2.5 Class LineString

16.2.7 Class Polygon »
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  • 16.2 The OpenGIS Geometry Model
  • 16.2.1 The Geometry Class Hierarchy
  • 16.2.2 Class Geometry
  • 16.2.3 Class Point
  • 16.2.4 Class Curve
  • 16.2.5 Class LineString
  • 16.2.6 Class Surface
  • 16.2.7 Class Polygon
  • 16.2.8 Class GeometryCollection
  • 16.2.9 Class MultiPoint
  • 16.2.10 Class MultiCurve
  • 16.2.11 Class MultiLineString
  • 16.2.12 Class MultiSurface
  • 16.2.13 Class MultiPolygon

16.2.6. Class Surface

A Surface is a two-dimensional geometry. It is a non-instantiable class. Its only instantiable subclass is Polygon.

Surface Properties

  • A Surface is defined as a two-dimensional geometry.

  • The OpenGIS specification defines a simple Surface as 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 Surface is the set of closed curves corresponding to its exterior and interior boundaries.

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