Dweets awesomed by u/RunRaj

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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Bugsy

function u(t) {

for(c.width|=r=999;--r;x.lineTo(960+C(r+t)*a,540+S(r+t)*a))a=r/2
x.stroke()

Jun 16 2018 4:32 PM UTC

}// 75/140

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The graph r=theta spinning around the origin. 65 characters to play with, so there's lots of remixing potential. Try messing around with the trig functions, it leads to some fun results

u/iverjo

Go fullscreen, stare at the center for 30 seconds, then look away from your screen (e.g. look at your keyboard). #opticalillusion
u/iverjo

#short

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leSchieber

function u(t) {

s=5;l=250;w=c.width=1920;h=c.height-l;r=1000;for(i=w/s;i--;){v=(t+i/w*s*r)%r;x.fillRect(w/r*v,(h/r*v+S(v*2*Math.PI)*100),s,300)}

Jun 16 2018 4:26 PM UTC

}// 128/140

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Xen

remix of d/5792 by u/sandromiccoli

function u(t) {

t?x.fillStyle=`hsla(${s=(t*49-t*30*C(t))%5e2},90%,50%,.4)`:x.translate(960,540)
x.rotate(t)
x.fillRect(s,s,s,s)
x.strokeRect(s,s,s,s)

Jun 16 2018 7:03 AM UTC

}// 133/140

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u/DataMeta

translucent fillRects with a strokeRect outline... neato

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Bugsy

function u(t) {

n=0;for(c.height=i=1080;i--;n=540*(1+S(t)*T((i%3.14)+1.57))){x.fillRect(960+(S(i*t/99)*200/Math.cosh((n-540)/40)),n,8,8)}

Jun 16 2018 12:42 AM UTC

}// 121/140

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DataMeta

function u(t) {

c.width|=0;p=Math.PI;for(i=0;i<800;i++)x.fillRect((i*1.86+C(S(t+i/(p**p)))*p**p+192),(i-S(t+i)*S(t*1.618-i/(p**p/.618))*88+133),9,9)

Jun 15 2018 4:30 AM UTC

}// 132/140

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u/robbyg

Bingo! Dino DNA!
u/aleamb

love it!
u/lionleaf

Cool! #DNA
u/Galaxtone

well dna unraveled

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robbyg

remix of d/8103 by u/robbyg

function u(t) {

x.fillText('╲╱'[new Date%2],t*600%2e3,t*10/3)

Jun 14 2018 9:42 PM UTC

}// 45/140

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#short #maze

u/robbyg

Only 7 characters longer than 10 PRINT CHR$(205.5+RND(1)); : GOTO 10 ;)
u/Xen

x.fillText('╲╱'[1+S(t*t)|0],t*600%2e3,t/.3)

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DataMeta

function u(t) {

c.width|=0;v=Math.abs;for(i=0;i<144;i++)x.ellipse(960+C(t)*64,b=540,b*.618*v(C(t-i)),b*v(S(C(t)+i)),C(S(i))-t+i,C(S(t)+t)-t,9-t);x.stroke();

Jun 14 2018 4:59 PM UTC

}// 140/140

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u/Xen

love it!

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jylikangas

function u(t) {

for(c.width=z=-4;z++;x.fill(new Path2D("M"+[i=d>30?d-30:1,j=i-1?30:d,i,-j,d,-d,d,d])))d=35/(2-t--%2),x.setTransform(z%3?-1:1,0,0,1,150,75)

Jun 14 2018 7:29 AM UTC

}// 138/140

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Endless double doors...

u/pythech

#path2d
u/zanella

*insert music theme for Get Smart here*
u/zanella

*insert music theme for Get Smart here*
u/zanella

(insert music theme for Get Smart here)
u/zanella

Sorry about the multiple comments, it wasn't posting when I clicked the button. :)

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magna

remix of d/8594 by u/magna

function u(t) {

c.width|=0
x.font='66px"'
for(Y=16;Y--;)for(X=29;X--;)x.fillText([...'🕛🕐🕑🕒🕓🕔🕕🕖🕗🕘🕙🕚'][(X+Y+t*9|0)%12],X*66,Y*66+66)

Jun 13 2018 5:10 PM UTC

}// 114/140

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magna

remix of d/8594 by u/magna

function u(t) {

x.font='25px"'
for(Y=43;Y--;)for(X=76;X--;)x.fillText([...'🌑🌘🌗🌖🌕🌔🌓🌒🌑'][(S((X*Y/99)+t*5)+1)*4.5|0],X*25,Y*25+25)

Jun 13 2018 1:42 PM UTC

}// 111/140

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u/zanella

Funny thing - it seems as if the moons are moving back-and-forth as if it was a flag. :)

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