Geometry_Engine: Edge case for FitLine with three equidistant points

[peterjamesnugent]

Description:

With three equidistant points you can this line:

BHoM_Engine/Geometry_Engine/Compute/FitLine.cs

Line 67 in 5b19bd4

double b = (p1 + Math.Sqrt(p1 * p1 + 4 * p2 * p2)) / (2 * p2);

To produce NaN because you're dividing by 0, i.e. p2 = 0.

Steps to reproduce:

See test script.

Expected behaviour:

A line through the middle of all three points.

Test file(s):

#3278-FitLineEdgeCase