bool wxBlockDouble::Combine(const wxBlockDouble &b)
{
if (!Touches(b)) return false;
if (Contains(b)) return true;
if (b.Contains(*this))
{
*this = b;
return true;
}
wxBlockDouble unionBlock;
Union( *this, b, &unionBlock );
if (unionBlock.IsEmpty()) return false;
// at least one of the two blocks has to be at each corner of the union
if (((unionBlock.GetLeftTop() == GetLeftTop()) || (unionBlock.GetLeftTop() == b.GetLeftTop())) &&
((unionBlock.GetRightTop() == GetRightTop()) || (unionBlock.GetRightTop() == b.GetRightTop())) &&
((unionBlock.GetLeftBottom() == GetLeftBottom()) || (unionBlock.GetLeftBottom() == b.GetLeftBottom())) &&
((unionBlock.GetRightBottom() == GetRightBottom()) || (unionBlock.GetRightBottom() == b.GetRightBottom())) )
{
*this = unionBlock;
return true;
}
return false;
}
Line Box::GetLeftLine()
{
Line l(GetLeftTop(), GetLeftBot());
return l;
}
Line Box::GetTopLine()
{
Line l(GetRightTop(), GetLeftTop());
return l;
}