Identify whether the points can construct a valid region for a topography surface.

Namespace: Autodesk.Revit.DB.Architecture
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since: 2014

Syntax

C#
`public static bool IsValidRegion( IList<XYZ> points )`

Visual Basic
`Public Shared Function IsValidRegion ( _ points As IList(Of XYZ) _ ) As Boolean`

Visual C++
`public: static bool IsValidRegion( IList<XYZ^>^ points )`

points: Type: System.Collections.Generic IList XYZ
The points set to be checked.

True if the size of points is not less than 3 and the points are not collinear after projecting to XY plane, that is, ignoring the elevation.

Exceptions

Exception	Condition
Autodesk.Revit.Exceptions ArgumentException	There are no points in the input points set.
Autodesk.Revit.Exceptions ArgumentNullException	A non-optional argument was NULL