Creates a fixed Symmetric Parabola defined by 2 pass-through points and the grade at the start point.
public ProfileParabolaSymmetric AddFixedSymmetricParabolaByTwoPointsAndStartGrade( Point2d point1, Point2d point2, double startGrade )
Public Function AddFixedSymmetricParabolaByTwoPointsAndStartGrade ( point1 As Point2d, point2 As Point2d, startGrade As Double ) As ProfileParabolaSymmetric
public: ProfileParabolaSymmetric^ AddFixedSymmetricParabolaByTwoPointsAndStartGrade( Point2d point1, Point2d point2, double startGrade )