Hi guys,
I just encountered a problem with LineLine intersection method with two nearly parallel lines.

Rhino.Geometry.Intersect.Intersection.LineLine(edge1, edge2, out double t1, out double t2)

I was expecting the method return false or the parameters t1 and t2 are out of bounds, But this is not happening. I managed to solve this by a parallel check before computing the intersection.
Just so that you know!

Hi @torabiarchitect
the line-line intersection is supposed to find the closest points (shortest distance) between two infinite lines which are not perfectly parallel.
Jess

Thank you both! the second overload worked for me without a double check. however the documentation remarks that I must filter the â€śnearly parallelâ€ť lines !
bool rc = Intersect.LineLine(lineA, lineB, out a, out b, tolerance, segments);

if (rc)
{
double angle_tol = RhinoMath.ToRadians(1.0); // or whatever
double parallel_tol = Math.Cos(angle_tol);
if ( Math.Abs(lineA.UnitTangent * lineB.UnitTangent) >= parallel_tol )
{
... do whatever you think is appropriate
}
}