Méthode STBuffer
Returns a geometric object that represents the union of all points whose distance from a SqlGeometry instance is less than or equal to a specified value.
Espace de noms : Microsoft.SqlServer.Types
Assembly : Microsoft.SqlServer.Types (en Microsoft.SqlServer.Types.dll)
Syntaxe
'Déclaration
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := False)> _
Public Function STBuffer ( _
distance As Double _
) As SqlGeometry
'Utilisation
Dim instance As SqlGeometry
Dim distance As Double
Dim returnValue As SqlGeometry
returnValue = instance.STBuffer(distance)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public SqlGeometry STBuffer(
double distance
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public:
SqlGeometry^ STBuffer(
double distance
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
member STBuffer :
distance:float -> SqlGeometry
public function STBuffer(
distance : double
) : SqlGeometry
Paramètres
- distance
Type : System. . :: . .Double
A double that specifies the distance from the SqlGeometry instance around which to calculate the buffer.
Valeur de retour
Type : Microsoft.SqlServer.Types. . :: . .SqlGeometry
A SqlGeometry object that represents the union of all points whose distance from the calling SqlGeometry is less than or equal to the specified value.
Notes
STBuffer calculates a buffer in the same manner as BufferWithTolerance, that specifies tolerance = distance * .001 and relative = true.
A negative buffer removes all points within the given distance of the boundary of the SqlGeometry.