60 byte road by yonatan

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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yonatan

remix of d/15974 by u/katkip

function u(t) {

f=frame
e=(f&2)-1
x.fillRect(960-e*f,f,e*f*(f**.5&1?.9:2),3)

Oct 8 2019 6:16 PM UTC

}// 60/140

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60 byte road

u/yonatan

50 bytes but *extremely* slow: e=t&2;x.fillRect(960-t*--e,t,e*t*(t**.5&1?.9:2),3)
u/joeytwiddle

Perspective on the road marking: f,e*f*(3e2/f**.5&1?.9:2),3


      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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