Top dweets of all time

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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primo

function u(t) {

D=new ImageData(c.width=w=568,j=320)
for(a=D.data;j--;)for(i=w;i--;a[o|3]=255)a[o=j*w+i<<2]=(2+S(i/j+t*8))*85
x.putImageData(D,0,0)

Oct 4 2021 10:37 AM UTC

}// 131/140

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red silk

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astucky21

function u(t) {

x.fillRect(0,0,1920,1080); //FILL IT ALL!

x.fillStyle=R(255/t,255*S(t),255*S(t)) //Let's see what all this does...OOH!

Oct 3 2021 8:48 PM UTC

}// 119/140

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My first Dweet! Just testing stuff out, new to all of this. Looking forward to posting many more though.

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taupelink

remix of d/23737 by u/taupelink

function u(t) {

for(i=480;--i;x.fillRect(t*f-i*X,480-q/Y,-5*q/t,i))f=i*t,X=f*f%4-2,Y=f**5%4-2,x.fillStyle=R(q=i,q*=1+S((i/6^i/2+t**X)/t),q+=i*Y,i/(q+600)/t)

Sep 30 2021 1:06 AM UTC

}// 140/140

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d/23963

u/cantelope

my wife likes this one so much she asked me to print it so i did. she says she's going to frame it. :)

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firegodjr

function u(t) {

x.globalCompositeOperation="difference"
x.fillStyle="#f00"
x.fillRect(0,0,1,1)
x.drawImage(c,1,0)
x.drawImage(c,0,1)

Sep 29 2021 6:57 PM UTC

}// 116/140

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Recurrence

u/aleamb

#recursion #sierpinski

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sigveseb

remix of d/23948 by u/rodrigo.siqueira

function u(t) {

for(i=k=680;--i;x.fillRect(k-i*Y,k-v*i,10*q*X*v,Y*i*v))f=i*t,X=f*f%3-1,Y=X*f%4-2,x.fillStyle=R(q=i*X*X*k,q*=X*X,q*=t*Y*q/i/X,i/q/q),v=.7**t

Sep 29 2021 10:40 AM UTC

}// 139/140

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Red and white

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ketolli

function u(t) {

c.width=a=1920;for(i=0;i<150;i++)x.fillRect(S(t+(i/4))*50+a/2,8*i,C(t+(i/20))*40,S(t+(i/3))*50)

Sep 19 2021 5:33 PM UTC

}// 95/140

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Tapeworm

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kozlovvictorzx

remix of d/20135 by u/danny@hille.dk

function u(t) {

eval(unescape(escape`𩠽𪐽🡓𚁴𚱹𛰲𝐵𚡃𚁴𚐫𪐪𜐮𝐶𚐪𞐹𒡫🐰𒡦𫱲𚁹👣𛡷𪑤𭁨🐱𞐲𜀻𮐭🐲𜀻𚑻𩡯𬠨𪐽𝀻𪐭𛐻𚑻𫠽𩠨𪐩𒡭👦𚁩𚰱𚐊𬐽𪐥𜠿𪰺𞐹𛑫𒡸𛡦𪑬𫁓𭁹𫁥👠𬡧𨠨𜀬𙁻𬐫𝀰𯐬𜀩𨀊𫠭𫐼𝐦𙡸𛡦𪑬𫁒𩑣𭀨𫠫𩠨𭀬𮐯𜠵𝐩𚰹𝀰𛁹𛁫👭𛑮𛀲𞐩𯑽`.replace(/u../g,'')))

Sep 10 2021 7:34 PM UTC

}// 135/140

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my pixelated remix

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taupelink

remix of d/23806 by u/taupelink

function u(t) {

k=120;for(i=k;i--;)
f=i*t,X=f*f%16,Y=X*f%4-2,
x.fillStyle=R(0,k+k*Y/2,k+k*C(Y*1.57)),
x.fillRect(k*X,540+k/Y,k/5**t,i)

Sep 10 2021 3:57 AM UTC

}// 118/140

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d/23823 figure 3

u/taupelink

briefly: Y ranges from -2 to 2. Below the middle line, Y is positive and there's more green than average. In the large top and bottom areas, Y is between -1 and 1, and there is more blue than average.
u/taupelink

Note the formula for the top of the rectangle, 540+k/Y. This breaks the window up into four horizontal bands. From top to bottom, they are: -2<Y<-1, -1<Y<0, 1<Y<2, and 0<Y<1 respectively.
u/taupelink

Correction: -1<Y<0 is the top band, -2<Y<-1 the second from the top.
u/taupelink

The green component formula is k+k*Y/2. This is greater than k when Y>0.
u/taupelink

The blue formula is k+k*C(Y*1.57). This is greater than k when C(Y*1.57)>0, i.e., when -1<Y<1.

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Tekmap

remix of d/23817 by u/pavel

function u(t) {

for(i=420;r=--i>>2;i&4||x.beginPath(x.fill()))x.fillStyle=`hsl(177,42%,${90-3*r}%`,x.arc(960,580,24*r,a=(i*2-.5+(~r%2|1)*C(t-r/7))/.9549,a)

Sep 9 2021 1:51 PM UTC

}// 139/140

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ArthurThuczsec

remix of d/21603 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=99)=>T(S(X)+S(Y))<9&&n>0?f(X*X-Y*Y-1.4,2*X*Y,n-2):n/69
for(i=1e3;i--;x.fillStyle=R(i%X))x.fillRect(X=t*49,i,1,f(X/9e3+.1,i/9e3)**2)

Sep 7 2021 9:56 PM UTC

}// 140/140

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Art-1

u/cantelope

#slowdraw
u/cantelope

looks cool