public static RectInt32 Union(RectInt32?rect1, RectInt32 rect2)
{
if (!rect1.HasValue)
{
return(rect2);
}
return(RectInt32.Union(rect1.Value, rect2));
}
public static RectInt32 Bounds(this RectInt32[] rects, int startIndex, int length)
{
Validate.Begin().IsNotNull <RectInt32[]>(rects, "rects").Check().IsRangeValid(rects.Length, startIndex, length, "rects").Check();
if (length == 0)
{
return(RectInt32.Zero);
}
RectInt32 a = rects[startIndex];
for (int i = startIndex + 1; i < (startIndex + length); i++)
{
a = RectInt32.Union(a, rects[i]);
}
return(a);
}
public static RectInt32?Union(RectInt32?rect1, RectInt32?rect2)
{
if (!rect1.HasValue && !rect2.HasValue)
{
return(null);
}
if (rect1.HasValue && !rect2.HasValue)
{
return(new RectInt32?(rect1.Value));
}
if (!rect1.HasValue && rect2.HasValue)
{
return(new RectInt32?(rect2.Value));
}
return(new RectInt32?(RectInt32.Union(rect1.Value, rect2.Value)));
}
public static RectInt32 Bounds(this IEnumerable <RectInt32> rects)
{
RectInt32 zero = RectInt32.Zero;
bool flag = true;
foreach (RectInt32 num2 in rects)
{
if (flag)
{
zero = num2;
flag = false;
}
else
{
zero = RectInt32.Union(zero, num2);
}
}
if (flag)
{
return(RectInt32.Empty);
}
return(zero);
}