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.
命名空間： Microsoft.SqlServer.Types
組件： Microsoft.SqlServer.Types (在 Microsoft.SqlServer.Types.dll 中)
語法
'宣告
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := False)> _
Public Function STBuffer ( _
distance As Double _
) As SqlGeometry
'用途
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
參數
- distance
型別：System.Double
A double that specifies the distance from the SqlGeometry instance around which to calculate the buffer.
傳回值
型別：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.
備註
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.