語言

PathGeometry.GetPointAtFractionLength(Double, Point, Point) 方法

定義

在指定長度的比例下得到 和 Point 切向量 PathGeometry 。

public:
 void GetPointAtFractionLength(double progress, [Runtime::InteropServices::Out] System::Windows::Point % point, [Runtime::InteropServices::Out] System::Windows::Point % tangent);
[System.Security.SecurityCritical]
public void GetPointAtFractionLength(double progress, out System.Windows.Point point, out System.Windows.Point tangent);
public void GetPointAtFractionLength(double progress, out System.Windows.Point point, out System.Windows.Point tangent);
[<System.Security.SecurityCritical>]
member this.GetPointAtFractionLength : double * Point * Point -> unit
member this.GetPointAtFractionLength : double * Point * Point -> unit
Public Sub GetPointAtFractionLength (progress As Double, ByRef point As Point, ByRef tangent As Point)

參數

progress
Double

此長度 PathGeometry的分數。

point
Point

當此方法返回時,包含了該 PathGeometry 方法在指定長度比例處的位置。 這個參數會未初始化傳遞。

tangent
Point

當此方法返回時,包含切向量。 這個參數會未初始化傳遞。

屬性

適用於