public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value != null)
{
switch (Type.GetTypeCode(value.GetType()))
{
case TypeCode.Int16:
case TypeCode.Int32:
case TypeCode.Int64:
case TypeCode.Decimal:
case TypeCode.Single:
case TypeCode.Double:
return(new SexagesimalAngle((double)value));
case TypeCode.String:
return(SexagesimalAngle.Parse((string)value));
case TypeCode.Object:
if (value.GetType() == typeof(SexagesimalAngle))
{
return(value);
}
break;
}
}
return(base.ConvertFrom(context, culture, value));
}
public override bool IsValid(ITypeDescriptorContext context, object value)
{
if (value != null)
{
switch (Type.GetTypeCode(value.GetType()))
{
case TypeCode.Int16:
case TypeCode.Int32:
case TypeCode.Int64:
case TypeCode.Decimal:
decimal decValue = (decimal)value;
return(decValue > (decimal) - SexagesimalAngle.MaxTotalDegrees && decValue < (decimal)SexagesimalAngle.MaxTotalDegrees);
case TypeCode.Single:
case TypeCode.Double:
double dblValue = (double)value;
return(dblValue > (double)-SexagesimalAngle.MaxTotalDegrees && dblValue < (double)SexagesimalAngle.MaxTotalDegrees);
case TypeCode.String:
SexagesimalAngle result;
return(SexagesimalAngle.TryParse((string)value, out result));
case TypeCode.Object:
if (value.GetType() == typeof(SexagesimalAngle))
{
return(true);
}
break;
}
}
return(false);
}
public static bool TryParse(string s, IFormatProvider provider, out SexagesimalAngle result)
{
if (provider == null)
{
provider = CultureInfo.CurrentCulture;
}
NumberFormatInfo nfi = (NumberFormatInfo)provider.GetFormat(typeof(NumberFormatInfo));
string pattern = string.Format(PatternFormat, nfi.NumberDecimalSeparator);
Match match = Regex.Match(s, pattern);
if (match.Success)
{
int degree = string.IsNullOrEmpty(match.Groups["degree"].Value) ? 0 : int.Parse(match.Groups["degree"].Value);
int minute = string.IsNullOrEmpty(match.Groups["minute"].Value) ? 0 : int.Parse(match.Groups["minute"].Value);
int second = string.IsNullOrEmpty(match.Groups["second"].Value) ? 0 : int.Parse(match.Groups["second"].Value);
int hundredth = string.IsNullOrEmpty(match.Groups["hundredth"].Value) ? 0 : int.Parse(match.Groups["hundredth"].Value);
bool negative = match.Groups["sign"].Value == "-";
result = new SexagesimalAngle(degree, minute, second, hundredth, negative);
return(true);
}
else
{
pattern = string.Format(NumericPattern, nfi.NumberDecimalSeparator);
match = Regex.Match(s, pattern);
if (match.Success)
{
double angle;
if (match.Groups["degree"].Success && double.TryParse(match.Groups["angle"].Value, NumberStyles.Float, provider, out angle))
{
result = new SexagesimalAngle(angle);
return(true);
}
else if (match.Groups["radian"].Success && double.TryParse(match.Groups["angle"].Value, NumberStyles.Float, provider, out angle))
{
result = SexagesimalAngle.FromRadian(angle);
return(true);
}
}
}
result = new SexagesimalAngle();
return(false);
}
public static bool TryParse(string s, out SexagesimalAngle result)
{
return(TryParse(s, null, out result));
}
public SexagesimalAngle Subtract(SexagesimalAngle op)
{
return(new SexagesimalAngle((int)(((long)this._units - (long)op._units) % (long)MaxTotalUnits)));
}