Dweets by u/Agnes

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: #Opposites

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Agnes

remix of d/9653 by u/Agnes

function u(t) {

A=a=>a*Math.random();for(P='M960 540',i=Q=255;i--;P+='t'+(20-A(40))+' '+(20-A(40)));x.strokeStyle='#'+(A(1000)|0),x.stroke(new Path2D(P))

Sep 10 2018 10:18 PM UTC

}// 137/140

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Violent brush strokes

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Agnes

remix of d/9650 by u/Agnes

function u(t) {

A=a=>Math.random()*a;for(P='M960 540',i=Q=255;i--;P+='l'+(20-A(40))+' '+(20-A(40)));x.strokeStyle=R(A(Q),A(Q),A(Q)),x.stroke(new Path2D(P))

Sep 3 2018 9:29 PM UTC

}// 139/140

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Yarn planet (variant of previous dweet with strokes instead of fills)

u/f8f82804

#path2d
u/donbright

creative

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Agnes

function u(t) {

A=a=>Math.random()*a;for(P='M960 540',i=500;i--;P+='l'+(15-A(30))+' '+(15-A(30)));x.fillStyle=R(A(Q=255),A(Q),A(Q),.1),x.fill(new Path2D(P))

Sep 3 2018 6:10 PM UTC

}// 140/140

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Pastel

u/katkip

Nice

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Agnes

remix of d/8422 by u/Agnes

function u(t) {

i=new Image();d=[...c.toDataURL()];for(j=1+~~t*100;j--;d[~~(Math.random()*d.length)]="a");i.src=d.join("");i.onload=()=>x.drawImage(i,0,0);

Aug 10 2018 9:56 AM UTC

}// 139/140

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Re-make of d/8422 with the "u" variable re-named "d" (having a variable named "u" breaks your dweet in most views)... interestingly, this violates the new cross-domain content policy!

u/BirdsTweetCodersDweet

Could it be the toDataURL() ?
u/Agnes

I think we realised it's not actually the cross-domain policy breaking it but something else. The console errors are when you try to load corrupted PNG data, which this produces pretty often.

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Agnes

function u(t) {

for(i=25,G=x.createRadialGradient(Q=960,M=540,Q,Q,M,1);i--;x.fillRect(0,0,2e3,2e3))G.addColorStop(i/25,R(F=(i*t)%255,0,F,.05)),x.fillStyle=G

Aug 9 2018 9:22 AM UTC

}// 140/140

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Demonstrating the power of radial gradients.

u/d0n.key

#satisfying
u/joeytwiddle

This works well in my Firefox and Safari. In Chrome it's smooth but so slow.

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Agnes

function u(t) {

for(c.width|=i=2;i--;)for(j=2;j--;)x.fillStyle=(j%2?'hsl(':'hsla(')+'0,100%,50%,.25'+(i%2?')':''),x.fillRect(X=960*i,Y=540*j,958,537)

Aug 8 2018 11:27 AM UTC

}// 133/140

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HSL compatibility tester: depending on how your strict your browser is, one to four of these squares will be pink (technically translucent red).

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Agnes

remix of d/9088 by u/firegodjr

function u(t) {

F=n=>C(n)^T(n/t|0);x.drawImage(c,0,l=9);for(j=214;j--;)x.fillStyle='#'+F(j+t*60^-t*60+j).toString(16).padStart(3,'0'),x.fillRect(j*l,0,l,l)

Aug 4 2018 10:24 AM UTC

}// 139/140

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Fractal Metropolis 1972

Show more comments…
u/katkip

Wow
u/joeytwiddle

Looks so cool and cyber, then come silly green smiley faces
u/katkip

That actually looks like a GOL
u/iverjo

Wow! Interestingly, this is the result of a long remix chain
u/fujimotos

The loop starts here: d/8940
u/donbright

i want a sweater like this
u/tomxor

I love this one!

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Agnes

remix of d/8993 by u/katkip

function u(t) {

B=c.width--;_=t?_.map((v,i)=>v+1+v%i|x.setTransform(Q=-10*i,0,0,-Q,v,$=-20*Q)|x.fillRect(v,0,-B,1)|x.fillText('🐎',-v,S(v+4*t))):[0,0,0,0,0]

Aug 1 2018 1:31 PM UTC

}// 139/140

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Moving 3D view. Had to sacrifice randomness to make this work... :(

u/katkip

Lol, wtf. Weird but funny. Nice.
u/magna

LOL
u/veubeke

:D
u/Agnes

x.fillText('🐎',v/=-25,C(v)) makes the horse movement look way better!

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Agnes

function u(t) {

for(c.width|=l=20;l--;)for(s=189;s--;x.stroke())x.beginPath(P=S(l+5*t)),x.lineWidth=15-5*P+3*S(s+P*15+t),x.arc(960,540,25*l,s/30,(s+1)/30);

Jul 31 2018 10:48 AM UTC

}// 139/140

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You can probably re-create BeesAndBombs's latest (https://twitter.com/beesandbombs/status/1024…) with this but it runs so poorly I didn't feel like doing the last part.

u/Agnes

#beesandbombs #kinda
u/Agnes

Runs perfectly fine at 60 fps in the iPhone browser, but a choppy 10-15 FPS in Chrome on my superpowered work laptop. What a time to be alive.

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Agnes

remix of d/8945 by u/firegodjr

function u(t) {

F=n=>{return C(n)*C(n)+S(n)*S(n)<1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#0f0":"#000",x.fillRect(j*l,0,l,l)

Jul 28 2018 8:15 PM UTC

}// 130/140

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Visualising numbers for which sin(x)*sin(x) + cos(x)*cos(x) < 1.

u/donbright

wait wait wait wait wait.... sin^2 + cos^2 = 1. im so confused. is this about the imprecision of floating point arithmetic?
u/donbright

this is absolutely fascinating... set it ==1 or >1 gives different patterns.
u/donbright

also fun... return S(n)/C(n)==T(n)

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