Dweets awesomed by u/DataMeta

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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joeytwiddle

remix of d/11725 by u/joeytwiddle

function u(t) {

(p=(X,Y,W,I,H=W/2)=>H>1?[0,1,2,3].map(i=>p(X+i%2*H,Y+H*(i>1),H,I*(.5+S(t*t++/2e4)/2)**.1)):x.fillRect(X,Y,3-I,3-I))(0,0,c.width=R=512,5)

Jan 14 2019 10:10 AM UTC

}// 136/140

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Some more of this fractal nonsense

u/joeytwiddle

(The original intention was to do this with hue. Perhaps that can be achieved...)
u/DataMeta

Highly entertaining #glitch

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metamero

function u(t) {

x.drawImage(stats.dom.children[0|t%3],-42,-9,w=2e3,1140)
for(i=w*Math.random()*9|0;i--;);
x.globalAlpha=.01

Jan 13 2019 1:01 PM UTC

}// 108/140

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u/DataMeta

#hiddengem

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joeytwiddle

remix of d/11709 by u/joeytwiddle

function u(t) {

t%1<.01&&(p=(X,Y,W,I,H=W/2)=>H>1?[0,1,2,3].map(i=>p(X+i%2*H,Y+H*(i>1),H,I*Math.random()**.2)):x.fillRect(X,Y,I,I))(0,0,c.width=R=512,5)

Jan 10 2019 10:29 AM UTC

}// 135/140

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golfed #recursive #fractal #cloud

u/katkip

#massive
u/joeytwiddle

guess: What happens if you remove one of the numbers from the list?
u/f8f82804

Neat trick with just three numbers :) It took me a minute...

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rnbw

function u(t) {

c.width^=0
x.fillStyle='#3ad3'
for(i=-1;i++<8;)x.fill(x.arc(960+S(t+i*.9)*500*(j=Math.min(i,1)),j*400+C(t+i*.9)*129*j+300,0,0,0))

Jan 7 2019 4:48 PM UTC

}// 129/140

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my first dweet of 2019 :D

Show more comments…
u/rnbw

(in which i learned heptagons are surprisingly efficient - tau/7 can be rounded and shortened to 2 characters!)
u/DataMeta

Very nice!
u/lionleaf

#diamond -looking
u/lionleaf

Clean and nice #gem
u/joeytwiddle

Nice! #model is how I tag 3d objects/shapes
u/f8f82804

#d3

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Agnes

function u(t) {

with(x)A=a=>Math.random()*31|0,B=0|A()/8,setTransform(4,0,0,4,A()*64,A()*36),rotate(1.57*B),clearRect(-8,R=-4.5,16,9),B&&fillRect(-7,R,14,9)

Jan 7 2019 2:55 PM UTC

}// 140/140

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Alien robot factory V2

u/Agnes

Massive props to JWinslow in the Discord for doing almost all of the golfing! The last 15 or so characters were removable because 1.57 is an OK approximation of Pi/2 and because the dimensions were scalable by four in the transform.
u/DataMeta

This one's fun

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DataMeta

remix of d/8910 by u/DataMeta

function u(t) {

for(i=192;i--;)j=C(t-i)*7*i,k=i*9,x.setTransform(k,0,0,k,960,540),
x.rotate(i/(2+t/99)),x.fillStyle=R(j*2,i,i-j,.8),x.fillRect(g=.01,g,.7,g)

Jan 5 2019 9:08 PM UTC

}// 140/140

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fullscreen recommended

u/joeytwiddle

hypnotic
u/joeytwiddle

#colors

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metamero

remix of d/11652 by u/metamero

function u(t) {

i=frame%49
j=(frame-i)/49
a=Math.random(onclick=reset)>.5?9:89
i%2^j%2&&x.fillRect(40*(i-(a>9)),40*(j-(a==9)),a,a>9?9:89)

Jan 5 2019 3:42 PM UTC

}// 121/140

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#maze

u/rnbw

it generated a followable path! :O (maybe that's your next challenge...)

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Undefined

function u(t) {

l=n=>{a=[];while(n!=1){n%2==0?n=n/2:n=n*3+1;a.push(n)};return a}
throw (~~t+2)+': '+l(~~t+2)

Jan 4 2019 11:35 PM UTC

}// 92/140

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Mini #collatz

u/Undefined

Now starts instantly #math #maths
u/DataMeta

Neat

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yonatan

remix of d/11642 by u/yonatan

function u(t) {

for(i=c.width|=0;i--;x.fillRect(S(a=i+t)*r+960,i/2,C(a)>0&&C(a)*r/2,19))s=i<1500,r=s?i/3:99,x.fillStyle=`hsl(${s*88} 33%${i%S(i)*77}%`

Jan 4 2019 8:36 PM UTC

}// 134/140

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u/13thptr

:0
u/lionleaf

Now that's a nice #tree . And you've got a full year to decorate it for christmas :)
u/katkip

*o*
u/iverjo

Stunning!
u/joeytwiddle

#christmas #xmas
u/vain

x.call3DEngine('tree') XD

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f8f82804

function u(t) {

c.width^=0;f=(a,b)=>S(a/9)*C(b/7);for(i=213;i--;)for(j=120;j--;f(i,j)-f(99*t,i)+f(t*63,j+t+16*f(t+j,i-t))>.5||x.fillRect(9*i,9*j,9,9));

Jan 2 2019 7:24 PM UTC

}// 135/140

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u/katkip

cows

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