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.
Seems to me like you also need to scroll down and back up again (to pause the dweet and resume it) for it to run, after clicking on the canvas. Chrome {whatever the latest version is} on Elementary OS {also latest}.
@BirdsTweetCodersDweet thanks! yes, I couldn't figure a way to call playDemo() after dweet transition/reload (seems timers are also reset). so it'll need to get this "play" message from server when scrolling back. (made in chrome/windows and tested on firefox; same thing on scrolling, but mouse wheel event return different values on firefox)
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)