Perp fram changes

Grasshopper
1

Hello again, One question, I have a curve that, with rotation cero has a perp frame in a direction and when i move the slider, the perp frame changes, so in cero degress i have to look at it in top plane and the rest of angles in front. I want always to be valid in front plane, 13_limpio.gh (20.7 KB)
anybody knows why? Thanks a lot

2

Check these two methods.

Canvas%20at%2001%3B16%3B04
Canvas at 01;16;04.png1215×596 154 KB
13_limpio_re.gh (30.9 KB)

3

Thanks a lot!!! But you know why it happens?

4

and another question, the y vector you put in the cross product, it is always positioned at the begining of the other vector b? Thanks!!!

5

You can find the direction of the cross product by the right-hand rule.