private void Initialize()
{
// Distance from start to center.
const float twoPi = 2 * 3.141592654f;
float oox = Origin.X - Center.X;
float ooy = Origin.Y - Center.Y;
float eex = End.X - Center.X;
float eey = End.Y - Center.Y;
Distance = (float)Math2.Sqrt(oox * oox + ooy * ooy);
// Alpha angle: start with X axis
Alpha = (float)Math2.Atan2(ooy, oox);
// Beta angle: end with X axis
Beta = (float)Math2.Atan2(eey, eex);
// Gamma angle is arc angle (beta - alpha)
if (Alpha < 0 && Beta > 0)
{
Gamma = Beta - (Alpha + twoPi);
}
else if (Alpha > 0 && Beta < 0)
{
Gamma = (Beta + twoPi) - Alpha;
}
else
{
Gamma = Beta - Alpha;
}
if (Math2.Abs(Gamma) > 3.141592654f)
{
Gamma = Beta - Alpha;
}
}
internal static double ParseDouble()
{
string val = ReadNumber();
if (val == null)
{
Logger.Error("ParseDouble: no numbers at {0} in '{1}'. Skipped.", CurrentIndex, Line);
return(double.MinValue);
}
try
{
return(Math2.StringToDouble(val));
}
catch (Exception ex)
{
Logger.Error("ParseDouble ERROR parsing '{0}': {1}", val, ex);
return(double.MinValue);
}
}