Could you explain the idea behind your calculation?

[tdoan2010]

Hi @eisman,
I'm very interested in your project and I want to develop it further and make it work with the latest D3 version. To be able to do that, I would like to understand your calculation. Could you please explain to me why you need these functions?

1. rotation
2. rotatePoint
3. rotate
4. unitaryNormalVector
5. unitaryVector

I see that you use them a lot in the tickRelationshipsOutlines function. What kind of path are you trying to draw each tick?

[Degooya]

it's for calculating the relationships, which comprises arrows and captions. Unfortunately I'm not a mathematician, which is why I can't explain how the calculation works. Maybe this will help though:

https://www2.mathematik.tu-darmstadt.de/~otto/LEHRE/notesLA218.pdf