Stroke.GetGeometry 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
多載
GetGeometry() | |
GetGeometry(DrawingAttributes) |
使用指定的 Geometry 取得目前 Stroke 的 DrawingAttributes。 |
GetGeometry()
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
傳回
備註
GetGeometry使用 方法來取得 PathGeometry ,以自訂 的 Stroke 圖形。 請考慮快 Geometry 取 以避免呼叫 GetGeometry 多次,這可能會影響效能。
適用於
GetGeometry(DrawingAttributes)
使用指定的 Geometry 取得目前 Stroke 的 DrawingAttributes。
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
參數
- drawingAttributes
- DrawingAttributes
DrawingAttributes,可決定 Geometry 的 Stroke。
傳回
範例
下列範例示範如何在每個 StylusPointStroke 上繪製圓形。
FitToCurve如果 屬性設定為 true
,則會 GetBezierStylusPoints 使用 來取得手寫筆點。 否則,會 StylusPoints 使用 屬性。
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
備註
方法 GetGeometry 會使用 Width 的 drawingAttributes
、 HeightFitToCurveStylusTip 和 StylusTipTransform 屬性來判斷 。 Geometry 請考慮快 Geometry 取 以避免呼叫 GetGeometry 多次,這可能會影響效能。