MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0

A `MultiCurve`

is a geometry collection
composed of `Curve`

elements.
`MultiCurve`

is a noninstantiable class.

`MultiCurve`

Properties

A

`MultiCurve`

is a one-dimensional geometry.A

`MultiCurve`

is simple if and only if all of its elements are simple; the only intersections between any two elements occur at points that are on the boundaries of both elements.A

`MultiCurve`

boundary is obtained by applying the “mod 2 union rule” (also known as the “odd-even rule”): A point is in the boundary of a`MultiCurve`

if it is in the boundaries of an odd number of`Curve`

elements.A

`MultiCurve`

is closed if all of its elements are closed.The boundary of a closed

`MultiCurve`

is always empty.