Precise paint. If you want to use it on… by katkip

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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katkip

function u(t) {

fs=0;
t||(X=Y=0);c.onmousemove=e=>{X=e.x/(Z=(fs?1:0.295)),Y=e.y/Z};x.beginPath(),x.fillStyle="#0002",x.arc(X,Y,10,0,7),x.fill();

Sep 5 2019 9:51 AM UTC

}// 128/140

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Precise paint. If you want to use it on fullscreen, change fs to 1

u/katkip

^ edit: isn't precise when fs=1
u/Fime

On mobile, at least in opera touch there is always an offset in dweets which use mousemove


      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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