HOW TO：繪製一連串的貝茲曲線
更新：2007 年 11 月
您可以使用 Graphics 類別的 DrawBeziers 方法來繪製一連串連接的貝茲曲線 (Bézier Spline)。
範例
下列範例繪製由兩條連接的貝茲曲線所組成的曲線。第一條貝茲曲線的結束點即是第二條貝茲曲線的起始點。
下圖顯示的是連接的曲線和七個點。
.png)
' 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)
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);
編譯程式碼
上述範例是專為與 Windows Form 搭配使用而設計的，而且它需要 PaintEventArgs e (即 Paint 事件處理常式的參數)。