public void reset(ptsPoint pt1, ptsPoint pt2)
{
var lineSeg = new rm21HorLineSegment(pt1, pt2);
lineSeg.Parent = this;
allChildSegments = new List<HorizontalAlignmentBase>();
allChildSegments.Add(lineSeg);
this.BeginStation = 0.0;
this.EndStation = lineSeg.EndStation;
this.Length = this.EndStation - this.BeginStation;
this.BeginAzimuth = lineSeg.BeginAzimuth;
this.EndAzimuth = lineSeg.EndAzimuth;
this.BeginDegreeOfCurve = this.EndDegreeOfCurve = 0.0;
this.BeginPoint = lineSeg.BeginPoint;
this.EndPoint = lineSeg.EndPoint;
restationAlignment();
alignmentData = new List<alignmentDataPacket>();
alignmentData.Add(new alignmentDataPacket(0, lineSeg));
}
private void createAddLineSegment(IRM21fundamentalGeometry fundGeomLineSeg)
{
ptList = fundGeomLineSeg.getPointList();
if (2 != ptList.Count)
throw new Exception("Line Segment fundamental geometry must have two and only two points.");
rm21HorLineSegment aLineSeg = new rm21HorLineSegment(ptList[0], ptList[1]);
if (null == allChildSegments_scratchPad) allChildSegments_scratchPad = new List<HorizontalAlignmentBase>();
allChildSegments_scratchPad.Add(aLineSeg);
}
public void appendTangent(ptsPoint TangentEndPoint)
{
// See "Solving SSA triangles"
// http://www.mathsisfun.com/algebra/trig-solving-ssa-triangles.html
var lastChainItem = allChildSegments.Last();
if (!(lastChainItem is rm21HorArc))
throw new Exception("Can't add tangent on a tangent segment.");
var finalArc = lastChainItem as rm21HorArc;
var incomingTanRay = new ptsRay(); incomingTanRay.StartPoint = finalArc.BeginPoint;
incomingTanRay.HorizontalDirection = finalArc.BeginAzimuth;
int offsetSide = Math.Sign(incomingTanRay.getOffset(TangentEndPoint));
double rad = finalArc.Radius;
Azimuth traverseToRevisedCenterPtAzimuth = finalArc.BeginAzimuth + offsetSide * Math.PI/2.0;
ptsVector traverseToRevisedCenterPt = new ptsVector(traverseToRevisedCenterPtAzimuth, rad);
ptsPoint revCenterPt = finalArc.BeginPoint + traverseToRevisedCenterPt;
ptsVector ccToTEPvec = finalArc.ArcCenterPt - TangentEndPoint;
ptsAngle rho = Math.Asin(rad / ccToTEPvec.Length);
ptsAngle ninetyDegrees = new ptsAngle();
ninetyDegrees.setFromDegreesDouble(90.0);
ptsAngle tau = ninetyDegrees - rho;
Azimuth ccToPtVecAz = ccToTEPvec.Azimuth;
Azimuth arcBegRadAz = finalArc.BeginRadiusVector.Azimuth;
ptsCogo.Angle.Deflection outerDefl = ccToPtVecAz.minus(arcBegRadAz);
ptsDegree defl = Math.Abs((tau - outerDefl).getAsDegreesDouble()) * offsetSide;
Deflection newDeflection = new Deflection(defl.getAsRadians());
finalArc.setDeflection(newDeflection: newDeflection);
var appendedLineSegment = new rm21HorLineSegment(finalArc.EndPoint, TangentEndPoint);
appendedLineSegment.BeginStation = finalArc.EndStation;
appendedLineSegment.Parent = this;
allChildSegments.Add(appendedLineSegment);
this.EndAzimuth = appendedLineSegment.EndAzimuth;
this.EndPoint = appendedLineSegment.EndPoint;
restationAlignment();
if (alignmentData.Count > 0)
alignmentData.RemoveAt(alignmentData.Count-1);
alignmentData.Add(new alignmentDataPacket(alignmentData.Count, finalArc));
alignmentData.Add(new alignmentDataPacket(alignmentData.Count, appendedLineSegment));
}