Dweets awesomed by u/Tesseract

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: #Opposites

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rodrigo.siqueira

remix of d/25331 by u/rodrigo.siqueira

function u(t) {

f=(x,y,n=9)=>x/y<X/T(x)**2?f(x*x-y*y-.8,2*x*S(y)+.2,n+t/4+1):S(n/9)
for(i=2e4;i--;x.fillRect(X=u&2047,u>>11,f(X/4e3+.3,u/8e6-.2),1))u=-~u

Apr 18 2022 3:03 AM UTC

}// 137/140

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5th version #spiral with noise and details

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tomxor

remix of d/25008 by u/Joachim

function u(t) {

for(c.width=w=i=128;++i<9e3;x.fillRect(C=i%w,T=i/w,u=w/T,.4+!~~s-T/2*(s/2&l)))s=2*C/T-u-S(t+u/3)*u/2,l=8*t+u&1,x.fillStyle=R(u*16,s*8|l||i)

Feb 23 2022 2:22 AM UTC

}// 139/140

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Smolr #road into the #sunset

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u/tomxor

Combined the three separate fills/clears by inverting the technique to render each pixel. road=!~~s buildings=s/2&l lines=s*8|l
u/KilledByAPixel

wow!
u/pavel

That's amazing
u/magna

wow
u/Joachim

That is so awesome!
u/rep_movsd

This has to be one of the all time greats #underrated
u/stephanegeorget

incredible!
u/danny@hille.dk

Superb!
u/danny@hille.dk

for(c.width=w=188,i=2e4;i--;x.fillRect(C=i%w,T=i/w,u=w/T,.4-T/2*(s/2&l)))x.fillStyle=R((f=9*(s=2*C/T-u+S(u/2+t)*u/4)|(l=8*t+u&1)||w)+u*19,f+u*7,f)
u/tomxor

Oh nice, that one feels more toasty @Danny
u/Odog8

Woah! nice work
u/joeytwiddle

Amazing! Another impossible dweet!

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tactical_retard

function u(t) {

for(X=1920;X--;){
Y=frame

x.fillStyle=`hsl(${t*60*5},99%,50%`
x.fillRect(X,0,1,(X^Y) % ((X&Y)/1) )
}

x.drawImage(c,0,1)

Sep 17 2021 2:10 PM UTC

}// 121/140

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#sierpinski

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pavel

remix of d/19550 by u/tomxor

function u(t) {

for(c.width=w=127,i=9087;i--;t?p&u[r=i+w+r%3]<1&&--u[i]&++u[r]:u[i]=r)x.fillRect(X=i&w,Y=i>>7,.5,p=u[i]),v=Y-36,r=(X/3-21)**4>v*v?2:i*t|Y<30

Sep 10 2021 2:03 AM UTC

}// 140/140

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Overfilled #hourglass

u/pavel

#time
u/rep_movsd

Amazing!
u/tomxor

Excellent! makes me wonder what else we can do with this stuff...

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Toby

remix of d/23411 by u/rodrigo.siqueira

function u(t) {

for(x.drawImage(c,S(t*4)*2-40,S(t*3)*2-15,i=2e3,1111);i--;x.fillStyle=`hsl(${i*i*i},100%,${i*i}%)`)x.fillRect(960+i*i*T(t*i),540+S(i)*i,2,2)

Aug 2 2021 1:43 PM UTC

}// 140/140

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Astral voyager freak out

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ArthurThuczsec

remix of d/8595 by u/robbyg

function u(t) {

for(x.drawImage(c,0,5),Z=i=720;i--;x.fillRect(i*9-C(t-S(i/19))*Z-Z,0,Z,9))x.fillStyle=`hsl(${S(i+t)*t*i},${z=45+i%85}%,${z/3}%,.1)`

Jul 25 2021 12:53 PM UTC

}// 131/140

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rodrigo.siqueira

remix of d/23372 by u/ArthurThuczsec

function u(t) {

for(x.drawImage(c,K=S(t)*15-40,K/2+9,i=2e3,1111);i--;x.fillStyle=`hsl(${i},90%,${T(t)*99}%)`)x.fillRect(960+C(z=t*i)*i,540+S(z*i)*i,1,3)

Jul 23 2021 7:12 PM UTC

}// 136/140

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Crazy fireworks #starfield

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ArthurThuczsec

remix of d/23367 by u/rodrigo.siqueira

function u(t) {

for(x.drawImage(c,-40,-15,i=2e3,1111);i--;x.fillStyle=R(t*t%i,S(i+t/9)*i,S(i)*i))x.fillRect(960+C(z=t*i)*i,540+S(z)*i,2,3)

Jul 22 2021 2:26 PM UTC

}// 122/140

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Beyonder

u/andrea270872

warp speed! Very cool.
u/joeytwiddle

That works very well. A highly effective effect.

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mrfoogles

remix of d/22673 by u/lerc

function u(t) {

for(c.width=i=h=960;i-->0;){
n=C(i+t);q=S(i/152)
n>0?0:x.fillRect((i*h/2-i*i)**.5*S(i+t*S(t))+h/2,i,n*n*9*q,9*(q**.3))
}

May 3 2021 5:03 PM UTC

}// 120/140

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Pascal

remix of d/22362 by u/BackendForth

function u(t) {

c.width|=w=480;for(j=2;j--;)for(i=k=300;i--;x.fillRect(w+w*X/Z+w*j*2+Z*12*j,w-Y/Z*w,s=k/Z**2,s))X=3*C(U=i+t)+C(V=i*i),Y=S(i)+S(V)+1,Z=S(U)-5

May 1 2021 1:43 PM UTC

}// 140/140

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#stereograph #d3 donut, cross your eyes for a 3D effect

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u/erin

so cool
u/BackendForth

Nice!
u/magna

Nice! The z is inverted for me...
u/tomxor

Neat. Magna, are you uncrossing your eyes by any chance? :P (i.e making your eyes further apart)
u/magna

u/tomxor yeah! I've gotten used to relaxing my eyes and looking "afar", from the way SIRDS normally work. I don't I can cross my eyes without looking at something actually close to my eyes. I suspect most people are more comfortable with relaxing their eyes than crossing them...
u/smtsjhr

so fun!
u/joeytwiddle

If you are a person like magna, change: fillRect(w to fillRect(3*w and +w*j to -w*j

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