Question on Measuring Line Difficulty

A horizontal line and a line from (0,0) to (3,4) are different, even if both has the distance of 5. The same can be said for other similar distanceslines.
- https://math.stackexchange.com/questions/1527319/number-of-squares-crossed-by-a-diagonal
- https://www.cut-the-knot.org/Curriculum/Geometry/LineThroughGrid.shtml

Another problem with difficulty can be based on sharp angles in the pattern.