public override Line Cut(Line L, Point reference)
{
Point P = IntersectionPoint(L);
if(P==null) return null;
bool IsRefAtLeft = new Vector(P, reference) * L.Director.Normal > 0;
bool IsOriginAtLeft = L.Director.Normal * new Vector(P,Origin) > 0;
if (IsRefAtLeft == IsOriginAtLeft)
return new LineSegment(P,Origin);
if ((new Vector(P, reference) * L.Director.Normal) * (L.Director.Normal * new Vector(P, Origin)) == 0)
return this;
return new LineSegment(P, B);
}
public Vector(Vector V)
: base(V)
{
}
public Ray(Point P, Vector V)
: base(P, V)
{
}
public Line(Line L)
{
_origin = new Point(L.Origin);
Director = new Vector(L.Director);
}
public Line(Point P, Point Q)
{
_origin = new Point(P);
Director = new Vector(P,Q);
}
public Line(Point P, Vector V)
{
_origin = new Point(P);
Director = new Vector(V);
}
public LineSegment(Point A, Vector V)
: base(A, V)
{
}