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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katkip

function u(t) {

c.width*=1;for(j=9;j--;){x.beginPath();for(i=4;i--;)x.arc(360+j*119+S(t)*300+C(i*1.57+.78)*40,540+S(i*1.57+.78)*160,0,0,0);x.fill()}

Jun 12 2019 9:47 AM UTC

}// 132/140

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Default but made of arcs #default

u/Xen

nice

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katkip

remix of d/14532 by u/rodrigo.siqueira

function u(t) {

c.width|=0;for(X=-3;X<3;X+=.1){for(Y=-3;Y<3;Y+=.1)Q=(P=-t+X*X+Y*Y)*C(P**.1),Dx=-Y+X*Q,Dy=X+Y*Q/8,x.fillRect(960+Dx*40,850+Dy*40-Q*99,5,5)}

Jun 11 2019 4:01 PM UTC

}// 138/140

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Tried to make a black hole gravity visualisation

u/joeytwiddle

There are two bytes free if someone wants to add Hawking radiation

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username

remix of d/5321 by u/hoplite

function u(t) {

i=c.width=96;for(;i--;)for(k=54;k--;)x.fillStyle=`hsl(${(S(i/9+(j=t+(k-i)/99))*S(k/7)+S(k/9+j)*S(i/7-j))*255},99%,50%)`,x.fillRect(i,k,1,1)

Jun 11 2019 9:06 AM UTC

}// 139/140

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#randomremix no 8 - distorted

u/donbright

#plasma
u/katkip

Awesomed!

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KilledByAPixel

remix of d/14516 by u/KilledByAPixel

function u(t) {

t+=3;with(x)save(font=t*4+"em'"),beginPath(clip(rect(0,t*60,3e3,1))),fillText("𝔻𝕎𝔼𝔼𝕋",q=840-t*99,350),restore(fillText("𝕎𝔸ℝ𝕊",q+119,650))

Jun 11 2019 3:21 PM UTC

}// 137/140

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#DweetWars #uncompressed

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taupelink

remix of d/14533 by u/rodrigo.siqueira

function u(t) {

m=1e3;n=100;R=Math.random()*3;X=R*C(v=t*n);Y=R*S(v);Q=R*R*S(3/R);x.moveTo(A=960+m*X,B=540+m*Y);x.lineTo(A+(-Y+X*Q)*n,B+(X+Y*Q)*n);x.stroke()

Jun 12 2019 9:29 PM UTC

}// 140/140

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Slow-building remix with polar coordinates and random r #math

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username

remix of d/14555 by u/username

function u(t) {

for(c.width|=i=2e3;i--;x.rotate(S(t)/99))x.fillStyle=`hsl(${i*S(t)},99%,50%`,x.fillRect(i,i,i,i)

Jun 12 2019 8:22 PM UTC

}// 96/140

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here you got some slices of rainbow - or nah - ah w/e you can have i-

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DataMeta

remix of d/14515 by u/DataMeta

function u(t) {

with(x)for(j=768;j--;beginPath(fill()))
g=257+t,fillStyle=R(o=C(g&j)*255,o,o,.5),
arc(64*(j%31),64*(j/31|0),Math.abs(S(t)*49),0,7)

Jun 9 2019 7:38 PM UTC

}// 130/140

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u/metamero

cool
u/katkip

Wait wow
u/joeytwiddle

Super. Reminds me of http://www.pouet.net/prod.php?which=564 hj fwdd

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katkip

function u(t) {

if(t<.7){x.font=`${40+t*9}em'`;x.fillStyle=R(t*399,t*199);x.fillText("3D",400+t*299,600+t*199),x.strokeText("3D",400+t*299,610+t*200)}

Jun 12 2019 11:06 AM UTC

}// 134/140

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#d3 #text #perspective

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simonmkwii

remix of d/13488 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=640,i);z=--i**.3;x.fillStyle=R(0,500/--z))x.setTransform(s=20/z,0,0,s,0,0),x.fillText(';',i%z*99,t++%z*60)

Jun 9 2019 6:59 AM UTC

}// 127/140

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;

u/katkip

um ok
u/lionleaf

#matrix :) Nice one
u/Xen

oooo

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LovelyRita

function u(t) {

for(i=512;i--;)'ᰀ`෼´腾៿샸࿿恼߽쀼៼߯͋O臀ԇπ π\u0003΀㠋ƀ㰁\u0080退\u0080䀀'.charCodeAt(i/16)>>i%16&1?x.fillRect(i%32*(H=60),(i/32|0)*H,H,H):0

Jun 8 2019 11:29 PM UTC

}// 130/140

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#earth #map

u/katkip

WOW!
u/metamero

please don't delete your dweets anymore, they're so cool
u/metamero

111B for(i=512;i--;)'ᰀ෼´腾៿샸࿿恼߽쀼៼߯͋O臀ԇπ π΀㠋ƀ㰁退䀀'.charCodeAt(i/16)>>i%16&1&&x.fillRect(i%32*60,(i>>5)*60,60,60)`