STBuffer 方法

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.

命名空间：  Microsoft.SqlServer.Types
程序集：  Microsoft.SqlServer.Types（在 Microsoft.SqlServer.Types.dll 中）

语法

声明
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := False)> _
Public Function STBuffer ( _
    distance As Double _
) As SqlGeometry
用法
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

参数

• distance
  类型：System. . :: . .Double
  A double that specifies the distance from the SqlGeometry instance around which to calculate the buffer.

返回值

类型：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.

注释

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.

请参阅

参考

SqlGeometry 类

Microsoft.SqlServer.Types 命名空间