.net c# winform绘制波形图,循环绘制

winform绘图项目中,经常需要绘制波形图,简称贝塞尔图形.

可以使用 Graphics 的 DrawBezier 绘画.具体代码如下:

        public void Draw()
        {
            Graphics graphics = this.CreateGraphics();
            Pen pen = new Pen(Color.Black, 1);
            int startx = 50;
            int starty = 300;
            int height = 40;
            int width = 55;
            Point pointX1 = new Point(startx, starty);
            Point pointY1 = new Point(startx + this.Width, starty);
            Point pointX2 = new Point(startx, starty - 45);
            Point pointY2 = new Point(startx, starty + 45);
            graphics.DrawLine(pen, pointX1, pointY1);
            graphics.DrawLine(pen, pointX2, pointY2);
            for (int i = 0; i < 10; i++)
            {
                //上部分半圆
                graphics.DrawBezier(pen, startx + width * 2 * i, starty, startx + width * 2 * i + 15, starty - height, startx + width * 2 * i + 40, starty - height, startx + width + width * 2 * i, starty);
                //下半部分半圆
                graphics.DrawBezier(pen, startx + width + (width * 2 * i), starty, startx + width + (width * 2 * i) + 15, starty + height, startx + width + (width * 2 * i) + 40, starty + height, startx + width * 2 + (width * 2 * i), starty);
            }
        }

实现效果如下: