/// <summary>在指定位置绘制字符</summary>
/// <param name="angle">旋转角度（以度为单位）</param>
private static void DrawChar(Graphics g, char c, float x, float y, Font font, Color color, int angle)
{
var pen = new Pen(color, 1);
var brush = new SolidBrush(color);
//g.DrawString(c.ToString(), font, brush, x, y);
var path = GetTextPath(g, c.ToString(), font);
var region = new Region(path);
var rect = region.GetBounds(g);
var rectFull = new RectangleF(0, 0, rect.Width + rect.X, rect.Height + rect.Y);
var rectHalf = new RectangleF(0, rect.Y + rect.Height / 2, rectFull.Width, rect.Height / 2); // 下半部区域
region.Intersect(rectHalf);
// 绘制字符图片(描边、填充一半底部)
var bitmap = new Bitmap((int)rectFull.Width, (int)rectFull.Height);
var g2 = Graphics.FromImage(bitmap);
g2.InterpolationMode = InterpolationMode.HighQualityBicubic;
g2.SmoothingMode = SmoothingMode.AntiAlias;
g2.CompositingQuality = CompositingQuality.HighQuality;
g2.DrawPath(pen, path); // 描边
g2.FillRegion(brush, region); // 填充一半底部
// 旋转
bitmap = Painter.Rotate(bitmap, angle);
// 绘制到目标位置
g.DrawImageUnscaled(bitmap, (int)x, (int)y);
}
