private Bitmap FractionToBitmap(Fraction f)
{
//Measuring numbers to determine bitmap width
var num = f.Numerator;
var den = f.Denominator;
var font = new Font("Verdana", 170, GraphicsUnit.Pixel);
int bmpwidth;
SizeF numsize, densize;
using (var g = this.CreateGraphics())
{
numsize = g.MeasureString(num.ToString(), font);
densize = g.MeasureString(den.ToString(), font);
bmpwidth = (int)Math.Max(numsize.Width, densize.Width) + 10;
}
var bmp = new Bitmap(bmpwidth, 480);
//Draw fraction
using (var g = Graphics.FromImage(bmp))
{
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
//Numerator
var numcenter = new Point(bmp.Width / 2, bmp.Height * 1 / 4);
g.DrawString(num.ToString(), font, Brushes.Black , new PointF(numcenter.X - numsize.Width / 2, numcenter.Y - numsize.Height / 2));
//Denominator
var dencenter = new Point(bmp.Width / 2, bmp.Height * 3 / 4);
g.DrawString(den.ToString(), font, Brushes.Black, new PointF(dencenter.X - densize.Width / 2, dencenter.Y - densize.Height / 2));
//The fraction line
var pen = new Pen(Brushes.Black, 10) {StartCap = LineCap.Round, EndCap = LineCap.Round};
g.DrawLine(pen, 10, bmp.Height / 2, bmp.Width - 10, bmp.Height / 2);
}
return bmp;
}
private static Fraction Negate(Fraction frac1)
{
var num = -frac1.Numerator;
var den = frac1.Denominator;
return new Fraction(num, den);
}
private static Fraction Multiply(Fraction frac1, Fraction frac2)
{
try
{
checked
{
var num = frac1.Numerator * frac2.Numerator;
var den = frac1.Denominator * frac2.Denominator;
return (new Fraction(num, den));
}
}
catch (OverflowException)
{
throw new FractionException("Overflow occurred while performing arithemetic operation");
}
catch (Exception)
{
throw new FractionException("An error occurred while performing arithemetic operation");
}
}
public static void ReduceFraction(Fraction frac)
{
if (frac.Numerator == 0)
{
frac.Denominator = 1;
return;
}
if (frac.Denominator < 0) // if -ve sign in denominator
{
//pass -ve sign to numerator
frac.Numerator *= -1;
frac.Denominator *= -1;
}
var gcd = GCD(frac.Numerator, frac.Denominator);
frac.Numerator /= gcd;
frac.Denominator /= gcd;
}
public static Fraction Inverse(Fraction frac1)
{
if (frac1.Numerator == 0)
throw new FractionException("Operation not possible (Denominator cannot be assigned a ZERO Value)");
var num = frac1.Denominator;
var den = frac1.Numerator;
return (new Fraction(num, den));
}
public static Fraction FareyAdd(Fraction frac1, Fraction frac2)
{
var num = frac1.Numerator + frac2.Numerator;
var den = frac1.Denominator + frac2.Denominator;
return (new Fraction(num, den));
}
