Dweets by u/rodrigo.siqueira

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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rodrigo.siqueira

remix of d/34491 by u/rodrigo.siqueira

function u(t) {

t?c.style.filter=`invert(`:𝕏=X=Y=0
for(i=5e4;i--;𝕏=X,x.fillRect(3e3+Y*4e3,1100+X*3e3,t<.9,.1))X=S(X*X-Y*Y+44),Y=C(2*𝕏*Y+1.92)+T(i)/1e4/(t-1)

Nov 5 2025 2:30 PM UTC

}// 140/140

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Double vortex #attractor

u/ximavus

woah

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rodrigo.siqueira

function u(t) {

t?c.style.filter=`invert(`:𝕏=X=Y=0
for(i=8e4;i--;𝕏=X,x.fillRect(3500+Y*5e3,1350+X*4e3,t<1,.1))
X=S(X*X-Y*Y+0.03),
Y=C(2*𝕏*Y+1.929)

Nov 3 2025 6:34 PM UTC

}// 130/140

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The mysterious Simone Attractor (a=0.03, b=1.929) #attractor

u/ximavus

eeeerieeee
u/magna

I audibly said, "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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rodrigo.siqueira

remix of d/34469 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`𩡯𬠨𫐽𫠽𞁥𜰬𪐽𜁼𭀪𞐹𛁪🐰𞱮𛐭𞱸𛡦𪑬𫁒𩑣𭀨𚀠𪠦𙡩𛰳𞐪𤰨𭀫𪠩𚰹𝠰𚱡𚡃𚁪𚐩𛁪𙠦𝐴𜀭𪐯𜠹𚡃𚁴𚱪𚐫𨐪𤰨𪠩𛁷👪🱓𚁪𚱮𛰷𜀰𚐪𨐯𞀳𞡭𛁷𚐬𪠽𪐪𪐫𚰬𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱩𛰸𜁽𛀹𞐥𛀤𮱮𙠦𝐰𯐥𨀩𨐽𜐱𝠰𚡮𛱭`.replace(/u../g,"")))

Oct 30 2025 6:44 PM UTC

}// 132/140

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Dynamic double #spiral

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rodrigo.siqueira

remix of d/34467 by u/dee-gomma

function u(t) {

x.fillRect(0,0,m=n=8e3,m)
for(i=0|-(t%14)*700,j=0;n--;x.clearRect(960+(j&&99*C(j+S(t))+a*C(j)),j&&540-a*S(j+i/m),w=4,5),j=i++**1.3)a=2e3*n/m

Oct 29 2025 12:58 PM UTC

}// 140/140

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Particles collapse (self-digestion in 10 seconds)

u/cantelope

ew
u/lewdev

#blackhole this is awesome!
u/ximavus

Its eating itself nice

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rodrigo.siqueira

remix of d/34457 by u/rodrigo.siqueira

function u(t) {

with(x)for(t||translate(960,540),j=2;j--;)for(i=98;i--;fillRect(t**6,T,T=150*S(i),4910/T/(t*20)))fillStyle=`hsl(${i/2} 99%${i}%`,rotate(.01)

Oct 28 2025 5:50 PM UTC

}// 140/140

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Explosive color reaction #waitforit (4 seconds)

u/joeytwiddle

I see a #virus

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rodrigo.siqueira

remix of d/34456 by u/ximavus

function u(t) {

with(x)for(t||translate(960,540),j=6;j--;)for(i=95;i--;fillRect(0,T*S(i),T=51/(t+.1)/t,5))fillStyle=`hsl(${i*2*t} ${i/t/2}%${i}%`,rotate(i)

Oct 27 2025 2:32 AM UTC

}// 139/140

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Abstract linework #spiral

u/rodrigo.siqueira

Change rotate(i) to rotate(T) to see overlapping patterns.
u/ximavus

Woah!

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rodrigo.siqueira

remix of d/34415 by u/rodrigo.siqueira

function u(t) {

for(i=c.width|=0;i--;c.style.background=`linear-gradient(#136,#fd8,#543)`)x.fillRect(k=2**(i+t%1-3),981-k,k/2,k)
x.fillRect(0,981,2e3,99)

Oct 25 2025 5:29 PM UTC

}// 137/140

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Sunrise on the Monolith Planet #monolith

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rodrigo.siqueira

remix of d/34446 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(x.globalAlpha=.05,0,i=k=2e3,k);i--;x.clearRect(i%9*130+420+(k=(Z*3-9+i%9)**(i*2+Z-2e3)),k*3*S(i)+400,k+60,240*(Z<4)))Z=t%6

Oct 23 2025 2:45 PM UTC

}// 137/140

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#default intro effect

u/ximavus

the x.globalAlpha effect is awesome dude

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rodrigo.siqueira

remix of d/34243 by u/joeytwiddle

function u(t) {

for(x.fillRect(0,0,i=2e4,i);i--;x.clearRect(960+S(i)*(120*S(k*2)+(1+S(t)/4)*300*S(k)**(i/(350+S(t*2)*130))),630+C(k)*540,3,3))k=(i+t)**2

Oct 22 2025 1:39 AM UTC

}// 136/140

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Spectral

u/neimad

Reminds me of an electron cloud
u/joeytwiddle

#ghost #halloween

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