public static bool TryFindClosestPoint(
Line3 former, Line3 latter, out Vector3 formerPoint, out Vector3 latterPoint)
{
Vector3 cross = Vector3.Cross(former.Direction, latter.Direction);
float length = cross.Length();
if (length == 0)
{
formerPoint = Vector3.Zero;
latterPoint = Vector3.Zero;
return(false);
}
Plane3 formerPlane = Plane3.FromPointTangents(former.Origin, cross, former.Direction);
Plane3 latterPlane = Plane3.FromPointTangents(latter.Origin, cross, latter.Direction);
var intersectsFormer = latterPlane.Intersect(former, out formerPoint);
var intersectsLatter = formerPlane.Intersect(latter, out latterPoint);
// Should always be true.
return(intersectsFormer && intersectsLatter);
}