Como: Criar uma curva Bézier quadrática.
This example shows how to create a quadratic Bezier curve. To create a quadratic Bezier curve, use the PathGeometry, PathFigure, and QuadraticBezierSegment classes.
Exemplo
In the following examples, a quadratic Bezier curve is drawn from (10,100) to (300,100). The curve has a control point of (200,200).
[xaml]
In Extensible Application Markup Language (XAML), you can use attribute syntax to describe a path.
<Path Stroke="Black" StrokeThickness="1"
Data="M 10,100 Q 200,200 300,100" />
[xaml]
(Note that this attribute syntax actually creates a StreamGeometry, a lighter-weight version of a PathGeometry. For more information, see the Sintaxe de Marcação de Caminho page.)
In XAML, you may also draw a quadratic Bezier curve using object element syntax. The following is equivalent to the previous XAML example.
<Path Stroke="Black" StrokeThickness="1">
<Path.Data>
<PathGeometry>
<PathGeometry.Figures>
<PathFigureCollection>
<PathFigure StartPoint="10,100">
<PathFigure.Segments>
<PathSegmentCollection>
<QuadraticBezierSegment Point1="200,200" Point2="300,100" />
</PathSegmentCollection>
</PathFigure.Segments>
</PathFigure>
</PathFigureCollection>
</PathGeometry.Figures>
</PathGeometry>
</Path.Data>
</Path>
Este exemplo é parte de uma amostra maior; Para obter o exemplo completo, consulte o A amostra de geometrias.