Stroke.GetGeometry Método

Definição

Namespace:

System.Windows.Ink

Assembly:

PresentationCore.dll

Obtém o Geometry da Stroke atual.

Sobrecargas

GetGeometry()	Obtém o Geometry da Stroke atual.
GetGeometry(DrawingAttributes)	Obtém o Geometry do Stroke atual usando os DrawingAttributes especificados.

GetGeometry()

Obtém o Geometry da Stroke atual.

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

Retornos

Geometry

Um Geometry que representa o Stroke.

Comentários

Use o GetGeometry método para obter um PathGeometry para personalizar a forma do Stroke. Considere armazenar em cache o Geometry para evitar chamar GetGeometry várias vezes, o que pode afetar o desempenho.

GetGeometry(DrawingAttributes)

Obtém o Geometry do Stroke atual usando os DrawingAttributes especificados.

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

Parâmetros

drawingAttributes

DrawingAttributes

O DrawingAttributes que determina o Geometry do Stroke.

Retornos

Geometry

Um Geometry que representa o Stroke.

Exemplos

O exemplo a seguir demonstra como desenhar um círculo em cada StylusPoint um de um Stroke. Se a FitToCurve propriedade for definida truecomo , o GetBezierStylusPoints será usado para obter os pontos de caneta. Caso contrário, a StylusPoints propriedade será usada.

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

Comentários

O GetGeometry método usa as Widthpropriedades , Height, FitToCurveStylusTip e StylusTipTransform de drawingAttributes para determinar o Geometry. Considere armazenar em cache o Geometry para evitar chamar GetGeometry várias vezes, o que pode afetar o desempenho.