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
11.2.7 Class Curve
A Curve is a one-dimensional geometry, usually represented by a sequence
of points. Particular subclasses of Curve define the type of
interpolation between points. Curve is a non-instantiable class.
11.2.8 Curve Properties
- The coordinates of its points.
-
Curveis defined as one-dimensional geometry. -
A
Curveis simple if it does not pass through the same point twice. -
A
Curveis closed if its start point is equal to its end point. -
The boundary of a closed
Curveis empty. -
The boundary of a non-closed
Curveconsists of its two end points. -
A
Curvethat is simple and closed is aLinearRing.
