Random dweets | Dwitter

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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Current theme challenge: #Food

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Blacklink

function u(t) {

c.width=1920
for(var X=0;X<1920;X+=10){
for(var Y=0;Y<1080;Y+=10){x.fillStyle=R(((X+t*100)/(t^4))^((Y+t*100)/(t^4)))
x.fillRect(X,Y,10,10)}}

Sep 12 2019 10:19 AM UTC

}// 140/140

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Baby's first fractal

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atgz

remix of d/9503 by u/atgz

function u(t) {

v=Math.abs;for(c.width|=i=351;i--;)x.ellipse(960+C(t)*64,b=540,b*.618*v(C(t-i)),b*v(S(C(t)+i--)),-t+i--,-t,7);x.stroke();

Aug 31 2018 9:22 PM UTC

}// 122/140

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katkip

remix of d/11620 by u/f8f82804

function u(t) {

for(i=c.width*=1;i--;Z<1.6&&x.fillRect(960+900*X,540+800*Y/S(t/9),s=9+(9-Z),s)){ϕ=i/600;θ=i-t/5+ϕ*4.5;X=S(θ*3+i)*S(ϕ);Y=C(ϕ);Z=C(θ)*ϕ+2;}

Jan 3 2019 1:11 PM UTC

}// 137/140

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DirtyDan

remix of d/5673 by u/DirtyDan

function u(t) {

p=11/7
a=960
b=535
c.width=a*2
for(i=0;i<a;i+=10)for(j=0;j<b;j+=10)
x.fillRect(a+b*S(i/a*p+S(t))*1/S(j/b*p),b+b*S(j/b*p)*C(i/a*p+C(t)),9,9)

Mar 6 2018 3:27 AM UTC

}// 139/140

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑻𨰮𭱩𩁴𪁼🐰𞱏🐲𜀰𚡓𚀵𚡴𚐻𣰽𣰾𜀿𣰺𚁐🐭𣰬𜀩𞱴𩑸𭁁𫁩𩱮🐢𨱥𫡴𩑲𘠻𩡯𫡴🐨𝐸𚱏𛰵𜀭𤀯𝠹𚐫𘡥𫐠𪑭𬁡𨱴𘠻𩡩𫁬𥁥𮁴𚀢𢡕𣑐𘠬𞐶𜀬𜑥𜰭𣰬𢠽𜐲𞐹𚰲𚡐𛑏𚐻𩡩𫁴𩑲👠𨡬𭑲𚀤𮰷𜀭𢠯𜰰𯑰𮁠𞱦𪑬𫁒𩑣𭀨𞐰𜀭𢠯𜠬𜑥𜰬𢠬𜰰𚑽`.replace(/u../g,'')))

May 16 2019 4:11 PM UTC

}// 140/140

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JUMP! (with blur shadow, thanks katkip!)

u/katkip

Your welcome! Nice
u/magna

WOW

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rodrigo.siqueira

remix of d/34470 by u/ximavus

function u(t) {

t?onmousemove=e=>T=e:x.translate(960,w=i=540)
for(i=w;i--;x.rotate(1))x.fillStyle=R(z=i*i%255,z,z),x.fillRect(T.x*3.4-960,T.y*3.4-w,20,20)

Nov 2 2025 3:45 PM UTC

}// 138/140

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Mouse spiral paint #uncompressed as wished by u/ximavus

u/rodrigo.siqueira

My favorite trick here is onmousemove=e=>T=e:x , so you can get coords from T.x and T.y later. And the letter T prevents the "ReferenceError: X is not defined" initialization bug, since T is a previously defined variable.
u/rodrigo.siqueira

You can compress even more by changing the random component from i*i%255 to i*i%w but the image will be a little bit lighter.
u/rodrigo.siqueira

My second favorite trick here is the ternary operator: t?(...when t=0...):(...when t>0...)
u/ximavus

Thank you!
u/ximavus

Actually those tricks are awesome especially the onmousemove one

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5Mixer

function u(t) {

i=w=c.width=1920
x.font="7em ῦ"
n=150
x.fillText("👾",n,200)
x.fillText("🐄",n,S(t*5)*n+600)
while(i-->0)x.fillRect(i,1e3,1,S((i+n)/n)*70-n)

Feb 28 2017 9:09 AM UTC

}// 138/140

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Plz put me down alien.

u/5Mixer

This was just a quick one, didn't spend too much time golfing. Interesting but minor discovery, use em as the unit in font size and you might not have to go into double digits.
u/iverjo

Thanks for the tip :)
u/joeytwiddle

#emoji #funny #scene #cow #ufo #alien

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Agnes

remix of d/32394 by u/Agnes

function u(t) {

for(x.reset(i=F=0);i++<9;)for(j=1e3,D=t-i;j--;x.fillRect(j%10*5+M(Q=D>0)+300*(i/3+1+S(Q?i:t)+Q*D*C(i)),400+j/5+M(),5,2))M=()=>Q*D*9*T(j*F++)

Sep 11 2024 10:37 AM UTC

}// 140/140

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#default target practice but with conservation of momentum for particles (v2)

u/neimad

next level
u/geeknik

ok that's cool
u/magna

Incredible!
u/aleamb

amazing!
u/Agnes

Director's cut changes that I want to do in retrospect: 1) remove Q and replace its definition by D*=D>0 so multiplying by D is the same as multiplying by Q then D, and 2) replace j/5 by j/10 and j=1e3 by j=2e3 so the patterns on the blocks before blowing up dissapear. Also 3) M=_ instead of M=()

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lionleaf

function u(t) {

c.width|=0
for(i=37;i--;x.fillRect(i*50,(a?500:660)+(i%2?50:S(t*9+i)*9),50,900))a=i<9|i>27

Jan 11 2020 2:14 AM UTC

}// 90/140

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Announcing monthly theme challenges! Simply make a dweet following the dweet and tag it with the right hashtag. The first one is #castle . Have fun! Feedback welcome on discord

u/katkip

Fun!

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katkip

function u(t) {

c.width*=1;x.lineTo(960,540);for(i=0;i++<30;)x.lineTo(S(i*i+t*i/9)*960+960,C(i*i+t*i/7)*440+540);x.fill("evenodd");

Oct 18 2018 1:05 PM UTC

}// 115/140

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#abstract