public static RectInt32 Intersect(RectInt32 a, RectInt32 b)
{
// MS.NET returns a non-empty rectangle if the two rectangles
// touch each other
if (!a.IntersectsWithInclusive(b))
{
return(new RectInt32(0, 0, 0, 0));
}
//
return(RectInt32.FromLTRB(
Math.Max(a.Left, b.Left),
Math.Max(a.Top, b.Top),
Math.Min(a.Right, b.Right),
Math.Min(a.Bottom, b.Bottom)));
}
private bool IntersectsWithInclusive(RectInt32 r)
{
return(!((Left > r.Right) || (Right < r.Left) ||
(Top > r.Bottom) || (Bottom < r.Top)));
}
/// <summary>
/// Intersect Method
/// </summary>
///
/// <remarks>
/// Replaces the Rectangle with the intersection of itself
/// and another Rectangle.
/// </remarks>
public void Intersect(RectInt32 rect)
{
this = RectInt32.Intersect(this, rect);
}
