'宣言
 
Public Overloads Function ComputePointAtLength( _
   ByVal length As System.Single, _
   ByVal flatteningTolerance As System.Single, _
   ByRef unitTangentVector As Point2F _
) As Point2F

public Point2F ComputePointAtLength( 
   System.float length,
   System.float flatteningTolerance,
   out Point2F unitTangentVector
)

パラメータ

length

The distance along the geometry of the point and tangent to find. If this distance is less then 0, this method calculates the first point in the geometry. If this distance is greater than the length of the geometry, this method calculates the last point in the geometry.

flatteningTolerance

The maximum bounds on the distance between points in the polygonal approximation of the geometry. Smaller values produce more accurate results but cause slower execution.

unitTangentVector

Whenthis method returns, contains a reference to the tangent vector at the specified distance along the geometry. If the geometry is empty, this vector contains NaN as its x and y values. You must allocate storage for this parameter.

戻り値の型

Geometry クラス
Geometry メンバ
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