Dwitter - javascript demos in 140 characters

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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KilledByAPixel

function u(t) {

for(i=2030;i--;)X=Y=Z=M=N=O=0,Y=48/t,N+=~(Y/i),X=M=i,N*=i/t,O=T(Z=t),N=i*t,Z=87-N,x.fillStyle=R(M,N,O,1),x.fillRect(-21+X,218+.5*Y,Z,Z);

Apr 6 2019 6:46 AM UTC

}// 136/140

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Created by my automatic dwitter emitter.

u/katkip

Awesomed it! looks like a road
u/KilledByAPixel

I thought so too.
u/KilledByAPixel

test

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KilledByAPixel

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=788,N=(t*i),O+=(i-N),M^=T(i+M),X*=C(i-t),x.fillStyle=R(N,M,Y,1),x.fillRect(885+0.36*X,300+.43*O,.1*N,.1*N)

Apr 8 2019 8:20 PM UTC

}// 133/140

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Created by my automatic dwitter emitter. Though it looks much different, this is continued from my previous dweet, now at 55 generations. Gonna keep going and see what happens...

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vinca

function u(t) {

eval(unescape(escape`景爨椠楮⁴籼⡣⹷楤瑨㵦㴹㤬砮景湴㴧㜰灸∧ⱡ㴰⤬砮晩汬呥硴⠢屵笱䘶㌱索ⰰⰷ〩Ɒ㵸⹧整䥭慧敄慴愨〬〬昬昩ⱡ㵮敷⁄慴攥㈵㔬搽瀮摡瑡⥩┴㴽愥㐦☨摛楝㵡⤻砮灵瑉浡来䑡瑡⡰ⰰⰰ⭡┹⤻`.replace(/u(..)/g,"$1%")))

Apr 5 2019 9:03 AM UTC

}// 133/140

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u/Xen

Yes!!!!
u/magna

Xen is having a hard time remixing this because it is already perfectly pyshedelic as it is.
u/magna

*psychedelic
u/vinca

for(i in t||(c.width=f=99,x.font='70px"',a=0),x.fillText("\u{1F631}",0,70),p=x.getImageData(0,0,f,f),a=new Date%255,d=p.data)i%4==a%4&&(d[i]=a);x.putImageData(p,0,0+a%9)

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Xen

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=3,O+=T(M/X),M-=(5-i),Y=T(M-t),X=S(i+91),X/=T(N*t),x.fillStyle=R(M,Z,N,1),x.fillRect(940+10*X,540+9.77*Y,O,O)

Apr 8 2019 4:53 PM UTC

}// 135/140

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Made by the dwitter emitter.

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vinca

function u(t) {

eval(unescape(escape`挮睩摴桼㴰ⱸ⹦楬汒散琨〬〬㉥㌬㉥㌩ⱸ⹦楬汓瑹汥㵒⡴⨹ⰰⰹ㤩ⱡ㴨堬夬䐬䄩㴾䐦☨䔽䐪㤬砮慲挨堽堫㌪䔪䌨䄩ⱙ㵙⭅⩓⡁⤬䔬〬㜩ⱸ⹣汯獥偡瑨⠩ⱡ⡘ⱙⱄⴱⱁ⨱⸲⤩ⱡ⠱攳ⰵ〰ⰱ㔬琩ⱸ⹦楬氨❥癥湯摤✩`.replace(/u(..)/g,"$1%")))

Apr 7 2019 1:14 PM UTC

}// 140/140

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LimeLaser

function u(t) {

r=Math.random
p=r()+r()
a=6.28*r()
p=p>1?2-p:p
x.fillStyle=`HSL(${57.3*a},${100*p}%,50%)`
x.fillRect(955+500*p*C(a),535-500*p*S(a),11,11)

Apr 6 2019 9:24 PM UTC

}// 137/140

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Uniform Random Sampling Within A Circle

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katkip

function u(t) {

f=frame;for(i=0;i<960;i++)x.fillStyle=R(0,0,C(f/t+C(f/40+i/89+t))*S(i/t)*128+128),x.fillRect(i*2,f*2,2,2)

Apr 6 2019 3:00 PM UTC

}// 105/140

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#waves

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rodrigo.siqueira

remix of d/12968 by u/rodrigo.siqueira

function u(t) {

c.width+=0
for(var i=1e3;i=i-.25;){
var K=(i&2)-S(t)
var X=K*S(i)/2+S(40*i+t)
var Y=C(i)/2-C(40*i-t)*K
x.fillRect(960+X*180,520+Y*180,4,3)
}

Apr 4 2019 12:12 PM UTC

}// 140/140

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Two dancing torus. "var" is not needed, but performance (fps) is better with them.

u/username

But if you do not specify anything, it will be a var anyway?
u/yonatan

It'll be global, which means it can be accessed outside of the u() function, which kills some compiler optimizations

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username

remix of d/13027 by u/username

function u(t) {

t*=256
for(i=3e3;i--;x.fillStyle=`hsl(${t*42},99%,50%`)K=(i&2)-t*t/i,X=S(i)+S(i)*K/t*9,Y=C(i)-C(i)*K/t*9,x.fillRect(960+X*150,640+Y*150,8,8)

Apr 5 2019 10:59 AM UTC

}// 140/140

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u/geb

#background

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username

remix of d/13053 by u/username

function u(t) {

for(c.width=i=2e3;i--;)X=(r=Math.random)()*1910,Y=r()*1070,S(t-(Y/4^X/4)/42)<S(t)?x.fillRect(X,Y,9,9):0

Apr 6 2019 5:43 PM UTC

}// 103/140

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golf?