Stroke.GetGeometry 方法

public:
 System::Windows::Media::Geometry ^ GetGeometry();

public System.Windows.Media.Geometry GetGeometry();

member this.GetGeometry : unit -> System.Windows.Media.Geometry

Public Function GetGeometry () As Geometry

返回

一个Geometry表示 .Stroke

注解

使用该方法 GetGeometry 获取自定义 PathGeometry 形状 Stroke的方法。 请考虑缓存 Geometry 以避免多次调用 GetGeometry ，这可能会影响性能。

public:
 System::Windows::Media::Geometry ^ GetGeometry(System::Windows::Ink::DrawingAttributes ^ drawingAttributes);

public System.Windows.Media.Geometry GetGeometry(System.Windows.Ink.DrawingAttributes drawingAttributes);

member this.GetGeometry : System.Windows.Ink.DrawingAttributes -> System.Windows.Media.Geometry

Public Function GetGeometry (drawingAttributes As DrawingAttributes) As Geometry

参数

返回

一个Geometry表示 .Stroke

示例

下面的示例演示如何在每 StylusPoint 一个位置绘制一个 Stroke圆。 FitToCurve如果该属性设置为true，GetBezierStylusPoints则用于获取触笔点。 否则， StylusPoints 将使用该属性。

protected override void DrawCore(DrawingContext context, DrawingAttributes overrides)
{
    // Draw the stroke. Calling base.DrawCore accomplishes the same thing.
    Geometry geometry = GetGeometry(overrides);
    context.DrawGeometry(new SolidColorBrush(overrides.Color), null, geometry);

    StylusPointCollection points;

    // Get the stylus points used to draw the stroke.  The points used depends on
    // the value of FitToCurve.
    if (this.DrawingAttributes.FitToCurve)
    {
        points = this.GetBezierStylusPoints();
    }
    else
    {
        points = this.StylusPoints;
    }

    // Draw a circle at each stylus point.
    foreach (StylusPoint p in points)
    {
        context.DrawEllipse(null, new Pen(Brushes.Black, 1), (Point)p, 5, 5);
    }
}

Protected Overrides Sub DrawCore(ByVal context As DrawingContext, _
        ByVal overridedAttributes As DrawingAttributes)

    ' Draw the stroke. Calling base.DrawCore accomplishes the same thing.
    Dim geometry As Geometry = GetGeometry(overridedAttributes)
    context.DrawGeometry(New SolidColorBrush(overridedAttributes.Color), Nothing, geometry)

    Dim points As StylusPointCollection

    ' Get the stylus points used to draw the stroke.  The points used depends on
    ' the value of FitToCurve.
    If Me.DrawingAttributes.FitToCurve Then
        points = Me.GetBezierStylusPoints()
    Else
        points = Me.StylusPoints
    End If

    ' Draw a circle at each stylus point.
    Dim p As StylusPoint
    For Each p In points
        context.DrawEllipse(Nothing, New Pen(Brushes.Black, 1), CType(p, Point), 5, 5)
    Next p

End Sub

注解

该方法GetGeometry使用Width用于确定其Geometry属性的 、FitToCurveHeight属性StylusTip和StylusTipTransform属性drawingAttributes。 请考虑缓存 Geometry 以避免多次调用 GetGeometry ，这可能会影响性能。