Topic: Algorithm: Point A connects segments, sorted by 1, 2, 3, 4, 5

[ssdd]

Algorithm: Point A connects segments, sorted by 1, 2, 3, 4, 5

[It's Alive!]

find the plane, then look for clockwise, vector cross product of AB & AC is co directional to the normal of the plane.
I have no idea how to do it in lisp

edit, I suppose finding #1 might be hard, unless you can align the UCS somehow

[well20152016]

find the plane, then look for clockwise, vector cross product of AB & AC is co directional to the normal of the plane.
I have no idea how to do it in lisp

edit, I suppose finding #1 might be hard, unless you can align the UCS somehow

Find the normal first，Then sort by normal。

c++  should be faster。