bool PolyChecker::Intersect(const DPoint2 &a, const DPoint2 &b, const DPoint2 &c, const DPoint2 &d)
{
if (IntersectProp(a, b, c, d))
return true;
else if (Between(a, b, c) || Between(a, b, d) ||
Between(c, d, a) || Between(c, d, b))
return true;
else
return false;
}
/*---------------------------------------------------------------------
Returns TRUE iff segments ab and cd intersect, properly or improperly.
---------------------------------------------------------------------*/
bool Intersect( tPointi a, tPointi b, tPointi c, tPointi d )
{
if ( IntersectProp( a, b, c, d ) )
return TRUE;
else if ( Between( a, b, c )
|| Between( a, b, d )
|| Between( c, d, a )
|| Between( c, d, b )
)
return TRUE;
else return FALSE;
}
