您可以使用 Graphics 类的 DrawBeziers 方法来绘制连接的 Bézier 样条序列。
示例:
以下示例绘制由两个连接的 Bézier 样条组成的曲线。 第一个贝塞尔样条的端点是第二个贝塞尔样条的起点。
下图显示了连接的样条以及七个点:
Point[] p = {
new Point(10, 100), // start point of first spline
new Point(75, 10), // first control point of first spline
new Point(80, 50), // second control point of first spline
new Point(100, 150), // endpoint of first spline and
// start point of second spline
new Point(125, 80), // first control point of second spline
new Point(175, 200), // second control point of second spline
new Point(200, 80)}; // endpoint of second spline
Pen pen = new Pen(Color.Blue);
e.Graphics.DrawBeziers(pen, p);
' Point(10, 100) = start point of first spline
' Point(75, 10) = first control point of first spline
' Point(80, 50) = second control point of first spline
' Point(100, 150) = endpoint of first spline and start point of second spline
' Point(125, 80) = first control point of second spline
' Point(175, 200) = second control point of second spline
' Point(200, 80)} = endpoint of second spline
Dim p As Point() = { _
New Point(10, 100), _
New Point(75, 10), _
New Point(80, 50), _
New Point(100, 150), _
New Point(125, 80), _
New Point(175, 200), _
New Point(200, 80)}
Dim pen As New Pen(Color.Blue)
e.Graphics.DrawBeziers(pen, p)
编译代码
前面的示例设计用于 Windows 窗体,它需要 PaintEventArgse
,这是 Paint 事件处理程序的参数。