I found animated Christmas tree on reddit:

Was curious to make it in js. Current results are here: Happy new 2022!. Wish you all great successes and joy, doing what you love!

The tree is built of two spirals. These 11 lines of code render one line on spiral. It includes 3d projection and background shadow. Almost the same as this wiki image:

EDIT: Thank you reddit. With your help we made it almost perfect. You are awesome!

Huge appreciation goes to @CensoredUsername who made significant improvement.

@Yazuak first gave and implemented idea of how to manage even distribution of points along the curves.

• Vitaliy Kaurov implemented the same tree in Wolfram language... in just 15 lines of code.
• David Librera rewrote this in CoffeeScript. Checkout his repository for nice OO design.
• Chris Warren-Smith wrote it in SmallBASIC
• Mike Mallin made it available in C using SDL2 and OpenGL 3.2
• SFML port by @deniskropp is available here: https://github.com/deniskropp/christmas_tree

So, what's left? Just small changes which could make this tree perfect:

• Shadows are not accurate
• I think code is more complex than it should be (subjectively).

MIT