//
// Given one of the fixed endpoints on this segment, return a congruent segment with the: fixed endpoint and the other point being moved.
//
public Segment GetOppositeSegment(Point pt)
{
if (!HasPoint(pt))
{
return(null);
}
Point fixedPt = pt;
Point variablePt = this.OtherPoint(pt);
Point vector = Point.MakeVector(fixedPt, variablePt);
Point opp = Point.GetOppositeVector(vector);
// 'Move' the vector to begin at its starting point: pt
return(new Segment(pt, new Point("", pt.X + opp.X, pt.Y + opp.Y)));
}
