public static SizeF Add(SizeF first, SizeF second)
{
return new SizeF(first.width + second.width, first.height + second.height);
}
public static SizeF Subtract(SizeF first, SizeF second)
{
return new SizeF(first.width - second.width, first.height - second.height);
}
public SizeF(SizeF size)
{
this.width = size.width;
this.height = size.height;
}