public double IntersectTraverse(Basin3 otherBasin)
{
var otherQtraverseProjection = otherBasin.Q3.ProjectOn(TraverseCalm);
var Qt = otherQtraverseProjection.ToVector3D();
Lambda_meridian = Qt.AngleTo(Q3.ToVector3D()).Radians;
return(Triangles.SinusesTheorem(
Math.PI / 2 + Delta_g_traverse,
r,
Lambda_meridian)
-
//r;
otherBasin.r); //there's deformation
//Qt.Length;
}