public static LRect Join(LRect lhs, LRect rhs)
{
LPoint start = new LPoint(Math.Min(lhs.left, rhs.left), Math.Min(lhs.top, rhs.top));
LPoint end = new LPoint(Math.Max(lhs.Right, rhs.Right), Math.Max(lhs.Bottom, rhs.Bottom));
return(new LRect(start, end));
}
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string) && value is LPoint)
{
LRect rt = (LRect)value;
return(rt.Left + "," + rt.Top + rt.Right + "," + rt.Bottom);
}
return(base.ConvertTo(context, culture, value, destinationType));
}
public bool Include(LRect rect)
{
if ((rect.left >= Right) || (rect.Right <= left))
{
return(false);
}
if ((rect.Bottom <= top) || (rect.top >= Bottom))
{
return(false);
}
return(true);
}
public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if (value is string)
{
try
{
string s = (string)value;
return(LRect.Parse(s));
}
catch { }
throw new ArgumentException("Can not convert '" + (string)value + "' to type Person");
}
return(base.ConvertFrom(context, culture, value));
}
/// Creates a new rectangle that is the intersection of [a] and [b].
///
/// .----------.
/// | a |
/// | .--------+----.
/// | | result | b |
/// | | | |
/// '-+--------' |
/// | |
/// '-------------'
public static LRect Intersect(LRect lhs, LRect rhs)
{
int left = Math.Max(lhs.left, rhs.left);
int right = Math.Min(lhs.Right, rhs.Right);
int top = Math.Max(lhs.top, rhs.top);
int bottom = Math.Min(lhs.Bottom, rhs.Bottom);
// if (left >= right) return new LRect(0, 0, 0, 0);
// if (top >= bottom) return new LRect(0, 0, 0, 0);
int width = Math.Max(0, right - left);
int height = Math.Max(0, bottom - top);
return(new LRect(new LPoint(left, top), width, height));
}
