private static CaptchaAtribute CalculateCaptchaAtributes()
{
int wdStep = Width / 5;
string RefCaracter = "ABCDEFGHIJLMNPQRSTUVWXYZ0123456789abcdefghijlmnopqrstuvwxyz";
CaptchaAtribute result = new CaptchaAtribute(new WriteLine[5], new WriteCaractere[5]);
for (int i = 0; i < 5; i++)
{
Random GenH = new Random((int)DateTime.Now.Ticks & 0x0000CCCC);
Random GenV = new Random((int)DateTime.Now.Ticks & 0x0000FFFF);
WriteLine cptline = new WriteLine(new PointF[5]);
for (int j = 0; j < 5; j++)
{
PointF p = new PointF(GenH.Next(wdStep * (j + 1)), GenV.Next(0, Height));
cptline.LineSize = GenH.Next(1, 8);
cptline.Color = GetColor(GenV.Next(0, 140));
cptline.Points[j] = p;
}
WriteCaractere cptCaracter = new WriteCaractere();
cptCaracter.Color = GetColor(GenV.Next(0, 140));
/// startV = wdStep * i;
cptCaracter.FontSize = GenH.Next(40, 60);
cptCaracter.Caracter = RefCaracter[GenH.Next(0, RefCaracter.Length - 1)].ToString();
cptCaracter.FontName = Descriptions.Fonts.GetName(GenV.Next(0, 2));
PointF pc = new PointF(10 + GenH.Next(wdStep * i, (wdStep * i + 1)), 5 + GenV.Next(0, Height - (cptCaracter.FontSize + 10)));
cptCaracter.Point = pc;
cptCaracter.Style = Descriptions.Fonts.GetStyle(GenV.Next(0, 3));
result.Caracteres[i] = cptCaracter;
result.Lines[i] = cptline;
}
return(result);
}
public void CaptchaValue()
{
WriteCaractere[] caracteres = new WriteCaractere[]
{
new WriteCaractere()
{
Caracter = "T"
},
new WriteCaractere()
{
Caracter = "e"
},
new WriteCaractere()
{
Caracter = "s"
},
new WriteCaractere()
{
Caracter = "t"
},
new WriteCaractere()
{
Caracter = "s"
}
};
CaptchaAtribute cpt = new CaptchaAtribute(new WriteLine[5], caracteres);
Assert.AreEqual("Tests", cpt.CaptchaValue);
}
public static string GenCaptcha(string path, int width, int height, out string captcha)
{
Width = width;
Height = height;
CaptchaAtribute cptAtrib = CalculateCaptchaAtributes();
using (Image <Rgba32> img = new Image <Rgba32>(width, height))
{
img.Mutate(ctx => ctx
.Fill(Rgba32.LightGray) // white background image
.DrawPolygon(cptAtrib.Lines[0].Color, cptAtrib.Lines[0].LineSize, cptAtrib.Lines[0].Points)
.DrawPolygon(cptAtrib.Lines[1].Color, cptAtrib.Lines[1].LineSize, cptAtrib.Lines[1].Points)
.DrawPolygon(cptAtrib.Lines[2].Color, cptAtrib.Lines[2].LineSize, cptAtrib.Lines[2].Points)
.DrawPolygon(cptAtrib.Lines[3].Color, cptAtrib.Lines[3].LineSize, cptAtrib.Lines[3].Points)
.DrawPolygon(cptAtrib.Lines[4].Color, cptAtrib.Lines[4].LineSize, cptAtrib.Lines[4].Points)
.DrawText(cptAtrib.Caracteres[0].Caracter,
SystemFonts.CreateFont(cptAtrib.Caracteres[0].FontName, cptAtrib.Caracteres[0].FontSize, cptAtrib.Caracteres[0].Style), cptAtrib.Caracteres[0].Color, cptAtrib.Caracteres[0].Point)
.DrawText(cptAtrib.Caracteres[1].Caracter,
SystemFonts.CreateFont(cptAtrib.Caracteres[1].FontName, cptAtrib.Caracteres[1].FontSize, cptAtrib.Caracteres[1].Style), cptAtrib.Caracteres[1].Color, cptAtrib.Caracteres[1].Point)
.DrawText(cptAtrib.Caracteres[2].Caracter,
SystemFonts.CreateFont(cptAtrib.Caracteres[2].FontName, cptAtrib.Caracteres[2].FontSize, cptAtrib.Caracteres[2].Style), cptAtrib.Caracteres[2].Color, cptAtrib.Caracteres[2].Point)
.DrawText(cptAtrib.Caracteres[3].Caracter,
SystemFonts.CreateFont(cptAtrib.Caracteres[3].FontName, cptAtrib.Caracteres[3].FontSize, cptAtrib.Caracteres[3].Style), cptAtrib.Caracteres[3].Color, cptAtrib.Caracteres[3].Point)
.DrawText(cptAtrib.Caracteres[4].Caracter,
SystemFonts.CreateFont(cptAtrib.Caracteres[4].FontName, cptAtrib.Caracteres[4].FontSize, cptAtrib.Caracteres[4].Style), cptAtrib.Caracteres[4].Color, cptAtrib.Caracteres[4].Point)
);
string filename = String.Concat(Guid.NewGuid().ToString(), ".png");
img.Save(path + "/" + filename);
captcha = cptAtrib.CaptchaValue;
return(filename);
}
}
