public SlopePipes(double slope, Pipe pipe)
{
Slope = slope;
ReferenceLine = (pipe.Location as LocationCurve).Curve as Line;
ReferencePoint0 = ReferenceLine.GetEndPoint(0);
ReferencePoint1 = ReferenceLine.GetEndPoint(1);
ReferenceDirection = ReferenceLine.Direction;
ReferenceLine.MakeUnbound();
SkewPipes = new List <SkewPipe>();
SkewPipes.Add(new SkewPipe(0, pipe));
}