remix of d/21413 but coincidentally loo… by smtsjhr

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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smtsjhr

remix of d/21419 by u/smtsjhr

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲👠𪑮𭡥𬡴𚀩𨡬𭑲𚀵𬁸𚑠𞱦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜑥𜰻𪐭𛐻𚑻𭰽𛐵𚡃𚁴𛰲𚐫𝐬𪰽𭰪𭰪𠰨𪐩𚰲𝐰𛁸𛡬𪑮𩑔𫰨𞐶𜀫𚁶🐴𜀪𭰪𤰨𪐫𭀩𚐫𪰪𤰨𪠽𪐯𜐩𛀵𝀰𚱶𛰲𚱫𚡃𚁪𚱷𚐩𯐻𮀮𬱴𬡯𪱥𚀩`.replace(/u../g,'')))

Jan 29 2021 7:49 AM UTC

}// 122/140

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remix of d/21413 but coincidentally looks like d/21490 **

u/smtsjhr

(SOURCE 158/140): c.style.filter=invert()blur(5px);for(c.width|=i=1e3;i--;){w=-5*C(t/2)+5,k=w*w*C(i)+250,x.lineTo(960+(v=40*w*S(i+t))+k*S(j=i/1),540+v/2+k*C(j+w))};x.stroke()
u/smtsjhr

how to golf without giving up blur effect??
u/smtsjhr

** @ u/danny@hille.dk please see my reply in d/21490 bless!
u/danny@hille.dk

As far as i know you cannot use the "clearRect motion blur trick" on lines, because lines uses strokeStyle, you can however do somthin like this: x.fillStyle='#0001' for(x.fillRect(0,0,i=2e3,i);i--;x.clearRect(960+(v=40*w*S(i+t))+k*S(i),540+v/2+k*C(i+w),9,9))w=-5*C(t/2)+5,k=w*w*C(i)+99
u/smtsjhr

thanks again u/danny@hille.dk thats great!


      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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