Move points along curve

[tianci]

Hello everyone

I built a few starting points on a complex curve, I want to move these points to the position of five millimeters according to the direction of the curve, but I found that after using tangent, except the top points and the left points move correctly, the points on the right and bottom are wrong, please help me, thanks in advance.

Tianci

move point on curve.gh (41.9 KB)

[Joseph_Oster]

These puzzles would be more fun if the objectives were more clearly defined. I have no idea…

move point on curve_2023_Jul28a.gh (45.4 KB)