Dweets awesomed by u/danny@hille.dk

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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anotherkitten

function u(t) {

c.width|=0
x.translate(960,540)
for(i=111;i--;x.fillRect(i*(S(t)*9-4)-25,i*(C(t)*9-4)-25,i*8+50,i*8+50))x.rotate(.69),x.fillStyle=R(0,i*1.8)

Nov 17 2020 4:03 PM UTC

}// 140/140

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spiraling vine

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dnmc

function u(t) {

r=Math.random
j=960+S(t)*400
k=540+C(t)*400
for(i=0;i++<80*t;){
j+=r()*8-4
k+=r()*8-4
x.fillStyle=R(0,(S(t*4)+1)*127)
x.fillRect(j,k,6,6)
}

Nov 17 2020 7:07 AM UTC

}// 139/140

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It's the circle of life...

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taupelink

remix of d/20630 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(S(S(C(p=Y*S(q=X%3*2-2)-2+Y%1.5)))),x.fillStyle=R(h*p,h*q,2*h)

Nov 17 2020 1:17 AM UTC

}// 140/140

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d/20654

u/joeytwiddle

Entrance to sietch as perceived by an insect with compound eyes
u/tomxor

Nice description, (and dweet) :)

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danny@hille.dk

remix of d/20618 by u/danny@hille.dk

function u(t) {

for(c.width=433,p=1;p++<6;)for(i=400;i--;)x.fillStyle=`hsla(${p*t*5},99%,50%,.4`,x.fillRect(i,m=C(i/(9*p+96)+t)*p*S(+p+S(i/66))*9+57,1,m)

Nov 16 2020 9:55 PM UTC

}// 137/140

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u/ciaccodavide

Smooth!

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rodrigo.siqueira

remix of d/20620 by u/dnmc

function u(t) {

c.width|=0
for(var q=0;q<120;q++)for(var w=0;w<110;w++)
if((V=q|w+t*140)%9)x.fillRect(960+q*(w/9)-w*7,50+w*9,7,9)

Nov 16 2020 7:49 PM UTC

}// 113/140

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Fastpinski triangle flow #Sierpinski

u/danny@hille.dk

Nice
u/tomxor

Feels like some kind of alien pyramid... ok yeah i've been watching too much startgate

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danny@hille.dk

function u(t) {

for(c.width=333,p=0;p++<6;)for(i=400;i--;x.fillStyle=R(0,0,p*44))x.fillRect(i,(C(i/(6*p+66)+p+t)*p*S(S(i/99+t*4)*C(t))*9)+4*p**2+30,i,1080)

Nov 15 2020 2:45 PM UTC

}// 139/140

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parallax waves

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New_Core

function u(t) {

t?t%2<1.98?0:Z=Z*1.4:Z=.1
for(i=22;i--;x.fillRect(300+b*50,0,C(a+b),182))b=t*60%2,x.setTransform(d=Z*S(a=t/7+i/3.5),e=Z*C(a),e,-d,999,540)

Nov 14 2020 3:55 PM UTC

}// 138/140

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tomxor

remix of d/20584 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𜐹𜠬𤠽𝀸𛁩🐸𜀶𝀻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁓𚰹𝠬𥀫𝐴𛁃𚁡👍𨑴𪀮𨑴𨑮𜠨𤰽𪐥𞐷𛑒𛁔👩𛰹𝰭𤠬𬠽𚁓𚡓𚱔𚡔𚐪𚠮𝐩𚠹𚐪𜠰𛑲𙠴𝀦𙡲🠳𝠿𬠼𝀲🱔𛱒𞡓𛱒𞠱𛁲🠳𝠿𬠼𤠺𮠨𜰩𛰵𚐩𮠽𫠽🡮𛐭𙠦𠰨𨐯𜰫𬠫𭀪𞐩𚡃𚁔𛰵𚱺𚁮𚐪𜠩𛑲𛰶`.replace(/u../g,'')))

Nov 14 2020 1:20 PM UTC

}// 139/140

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#stargate connected to a world with a #blackhole

u/tomxor

From "A Matter of Time" episode, requested from u/nbevans on HN.

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dnmc

function u(t) {

c.width=1920
for(q=0;q<192;q++)for(w=0;w<108;w++)if(q*w%Math.round(S(t/5)*50)!=0){x.fillStyle=R(C(t)*200);x.fillRect(q*10,w*10,10,10)}

Nov 14 2020 5:11 AM UTC

}// 134/140

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Mystery boxes

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rodrigo.siqueira

remix of d/20575 by u/geb

function u(t) {

for(i=5e3,c.width|=f=g=>99*(T(i+t/5))*g(i*i);i--;)x.strokeRect(960+f(C),540+f(S),s=5*S(i/1e3),s)

Nov 13 2020 1:20 PM UTC

}// 96/140

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Use fullscreen for dizzying effect. #stars

u/donbright

heh that really is weird in fullscreen
u/magna

I got dizzy and can't get out of fullscreen HALP!

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