## dwitter.net

+ New dweet
`function u(t) {`
```} // 122/140 ```

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)

``` u(t) is called 60 times per second. t: Elapsed time in seconds. S: Shorthand for Math.sin. C: Shorthand for Math.cos. T: Shorthand for Math.tan. R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5) c: A 1920x1080 canvas. x: A 2D context for that canvas. ```
remix of d/20898 by u/cantelope

`function u(t) {`

```}// 132/140 ```

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

• Metatron's Cube
`end-circle-offset == 0` is easy to check and means start and end are same circle, so draw that circle.
Otherwise draw the current circle with radius `0` which is same as `lineTo`.
`T=!T&&!x.beginPath(x.stroke())` starts/strokes the path every two circles.
Here is a version before all the bit hacking `for(c.width=640,i=16;i--;)for(j=16;j--;x.beginPath(x.stroke()))for(k=2;k--;)q=(i+j*k)%16,r=((q+2)/6|0)*64,x.arc(320+r*C(a=Math.PI/3*q+t),180+r*S(a),!j*32,0,7)`
``` u(t) is called 60 times per second. t: elapsed time in seconds. c: A 1920x1080 canvas. x: A 2D context for that canvas. S: Math.sin C: Math.cos T: Math.tan R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5) ```