Distance Line Line wrong result

[ArpegorPSGH]

When applying this node to parrallel lines, intersection flag is True instead of False (the distance between lines is far greater than Tolerance). Could this be corrected?

[zeffii]

it's behaving as intended, according to the code that implements that function.

 In case of parallel lines it will return the origin of the first line as the closest point 

https://github.com/nortikin/sverchok/blob/675f70c33f537c87f546e35a8394fe63960dec44/utils/geom.py#L2479-L2510

[zeffii]

i think your suggestion is valid.

[zeffii]

when the else is run, the dist = (inter_p[0] - line_origin_b).length part is (i think) likely (but depending on the orientation of the lines) to be an operation on the same vector3d. there inter_p[0] and line_origin_b are identical, and subtracting one from the other will result in a (0, 0, 0) and have 0 length

[ArpegorPSGH]

One solution is to calculate the angle between the line's directions and if it is 0 or 180, output false for intersection.

[ArpegorPSGH]

Well, after analysing it a bit, the problem just stems from a little mistake from the author of the function : instead of dist = (inter_p[0] - line_origin_b).length, it should be dist = (inter_p[0] - line_origin_a).length. Perhaps you could correct that, @zeffii.