public static Rect2D Intersect(Rect2D rect1, Rect2D rect2)
{
if (rect1.IsUndefined() || rect2.IsUndefined())
{
return(Undefined);
}
var left = Math.Max(rect1.Left, rect2.Left);
var top = Math.Max(rect1.Top, rect2.Top);
var right = Math.Min(rect1.Right, rect2.Right);
var bottom = Math.Min(rect1.Bottom, rect2.Bottom);
return(left >= right || top >= bottom
? Undefined
: new Rect2D(new Point2D(left, top), new Point2D(right, bottom)));
}
public static Rect2D Union(Rect2D rect1, Rect2D rect2)
{
if (rect1.IsUndefined())
{
return(rect2);
}
if (rect2.IsUndefined())
{
return(rect1);
}
var left = Math.Min(rect1.Left, rect2.Left);
var top = Math.Min(rect1.Top, rect2.Top);
var right = Math.Max(rect1.Right, rect2.Right);
var bottom = Math.Max(rect1.Bottom, rect2.Bottom);
return(new Rect2D(new Point2D(left, top), new Point2D(right, bottom)));
}
public static bool IsDefined(this Rect2D rect) => !rect.IsUndefined();