Space time rotator by rodrigo.siqueira

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    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.

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rodrigo.siqueira

remix of d/17369 by u/rodrigo.siqueira

function u(t) {

for(c.width=i=2e3;i--;)Z=i/350,x.globalAlpha=.3,X=C(i/9+t)/Z,Y=S(i/9+t)/Z,x.fillRect(980+150*(X*C(t)-Z*S(t)),500-Y*150+Z*S(t*2.3)*59,9,9)

Jan 25 2020 12:18 AM UTC

}// 137/140

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Space time rotator

u/rodrigo.siqueira

This is the same helix from the previous dweet but now with perspective applied:: X/Z and Y/Z (divided by Z, so the image will get smaller when Z is higher)


      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)

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