What I’m trying to do here is to have points on a tunnel 3D alignment line from all the centroid of elements so as to get the chainage of that where that element is located?
Please find the below sketch for a visual explanation-
red x is element centroid
black is alignment line
blue is tunnel extents
red circle are the points which I need to extract
which is perpendicular from the element centroid. (closest point on alignment)
Please let me know if anyone have any approach or idea.
Thanks in advance,