T * sin (t) ≈ Christmas tree (github.com)

Same formula on Quake's Railgun

Yeah it's a helix.

cool

I really like the simplicity.

Can you reverse the direction of one of the spirals?

Or maybe slow down one to half-speed?

(Maybe it would look better, maybe not.)

Nice job

Really like that - beautiful and elegant.

Someone also reimplemented it in Mathematica

http://community.wolfram.com/groups/-/m/t/175891

Very merry cleverness

Original reddit post: http://www.reddit.com/r/programming/comments/1tswai/t_sin_t_...

This reminds me of when I first started programming in Turbo Pascal. I made a Christmas tree using graphic mode and trig functions. I also only used if-then statements so i ended up with about a thousand lines :) Looking at this more elegant tree reminds me of why I went into this career.

It seems awfully appropriate 'starring' this repository.

Quick reimplementation in the desmos graphing calculator: https://www.desmos.com/calculator/brjshfkaof

Press play next to t_0 to animate.

Link to github.io page for the lazy: http://anvaka.github.io/atree/

with dynamic alpha, and mouse orient around x-axis: http://jsfiddle.net/rYa5d/1/

Very nice and not complicated at all -- good work!

Thanks for sharing!

Extra credit to anyone who can implement this in HTML/CSS without using the canvas element. Since CSS transformations are hardware accelerated, I bet it can be made to look as smooth as the reference GIF.

May I suggest t * sin( k * ln(t) ), for some constant k? That makes the path self similar about the (0, 0) point. Maybe you'd like that.

Oh god staring at this just motivates me to work. Thanks a lot for sharing, as well as all the commenters showing the different implementations of it.

Yet another entry. The Christmas tree in Tao Presentations is less than 30 lines of code, with a star at the top and blinking lights. Code here: http://www.taodyne.com/shop/dev/en/blog/275-a-christmas-tree....