private void DoFloat(UInt32 NumberOfPoints, BinaryReader _br, Pen p)
{
System.DrawingCore.PointF[] Points = new System.DrawingCore.PointF[NumberOfPoints];
bool first = true;
for (int i = 0; i < NumberOfPoints; i++)
{
Points[i].X = _br.ReadSingle();
Points[i].Y = _br.ReadSingle();
}
PointF PointA = new PointF();
PointF PointB = new PointF();
for (int i = 0; i < NumberOfPoints; i++)
{
if (first)
{
PointA = Points[i];
first = false;
}
else
{
PointB = Points[i];
DoInstructions(PointA.X, PointB.X, PointA.Y, PointB.Y, p);
PointA = PointB;
}
}
}
private void DoCompressed(UInt32 NumberOfSegments, BinaryReader _br, Pen p, UInt32 Offset, UInt32 NumberOfPoints, float Tension)
{
//bool first = true;
PointF[] Points = new System.DrawingCore.PointF[NumberOfPoints];
for (int i = 0; i < NumberOfPoints; i++)
{
Points[i].X = (float)_br.ReadInt16();
Points[i].Y = (float)_br.ReadInt16();
}
DoInstructions(Points, p, Offset, NumberOfSegments, Tension);
}
/// <summary>
/// 验证码图片 => byte[]
/// </summary>
/// <param name="verifyCode">验证码</param>
/// <param name="width">宽</param>
/// <param name="height">高</param>
/// <returns>byte[]</returns>
public byte[] CreateByteByImgCheckCode(string checkCode, int width, int height)
{
Font font = new Font("Arial", 14, (FontStyle.Bold | FontStyle.Italic));
Brush brush;
Bitmap bitmap = new Bitmap(width, height);
Graphics g = Graphics.FromImage(bitmap);
SizeF totalSizeF = g.MeasureString(checkCode, font);
SizeF curCharSizeF;
PointF startPointF = new PointF(0, (height - totalSizeF.Height) / 2);
Random random = new Random(); //随机数产生器
g.Clear(Color.White); //清空图片背景色
for (int i = 0; i < checkCode.Length; i++)
{
brush = new LinearGradientBrush(new Point(0, 0), new Point(1, 1), Color.FromArgb(random.Next(255), random.Next(255), random.Next(255)), Color.FromArgb(random.Next(255), random.Next(255), random.Next(255)));
g.DrawString(checkCode[i].ToString(), font, brush, startPointF);
curCharSizeF = g.MeasureString(checkCode[i].ToString(), font);
startPointF.X += curCharSizeF.Width;
}
//画图片的干扰线
for (int i = 0; i < 10; i++)
{
int x1 = random.Next(bitmap.Width);
int x2 = random.Next(bitmap.Width);
int y1 = random.Next(bitmap.Height);
int y2 = random.Next(bitmap.Height);
g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
}
//画图片的前景干扰点
for (int i = 0; i < 100; i++)
{
int x = random.Next(bitmap.Width);
int y = random.Next(bitmap.Height);
bitmap.SetPixel(x, y, Color.FromArgb(random.Next()));
}
g.DrawRectangle(new Pen(Color.Silver), 0, 0, bitmap.Width - 1, bitmap.Height - 1); //画图片的边框线
g.Dispose();
//保存图片数据
MemoryStream stream = new MemoryStream();
bitmap.Save(stream, ImageFormat.Jpeg);
//输出图片流
return(stream.ToArray());
}
