Dweets awesomed by u/robbyg

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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pavel

function u(t) {

with(x)for(c.width|=j=88,scale(9,9);i=j-->>3;arc(107+3*(9-i)*S(p/2),60,6*i,A=(j%8-6||beginPath(stroke()))*11/7+p/4,A))p=S(a=5*t-i/5)+a

Feb 9 2019 11:07 PM UTC

}// 134/140

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Square dance #beesandbombs

u/katkip

#loop

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23_Skidoo

remix of d/12194 by u/23_Skidoo

function u(t) {

for(s=24,d=480,i=4e3;i--;f=C(X/d+t/2)/T(Y/d+s)+t,x.fillStyle=`hsla(${S(f/6)*d} 66%${40+S(f*6)*s}%`)x.fillRect(X=i%81*s,Y=~~(i/81)*s,s,s)

Feb 9 2019 5:58 AM UTC

}// 136/140

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pavel

remix of d/12230 by u/pavel

function u(t) {

for(c.width|=p=2*Math.PI,x.scale(9,9),i=13;j=i--*p/6;x.arc(107+45*C(A=j-t/4+i*p/12),60+45*S(A),14,a=(t+j)%p,a));x.stroke()

Feb 8 2019 8:33 PM UTC

}// 122/140

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I like how the corners are "walking"

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katkip

remix of d/12244 by u/katkip

function u(t) {

eval(unescape(escape`昽⡘ⱙⱳ⤽㹻楦⡳㸱〩砮扥杩湐慴栨⤬砮汩湥呯⡘ⱙ⵳⼳⤬砮汩湥呯⡘⭳⼲ⱙ⭳⼲⤬砮汩湥呯⡘⵳⼲ⱙ⭳⼲⤬砮晩汬⠩ⱦ⡘ⱙ⵳⼲ⱳ⼲⤬昨堫猯㈬夫猯㈮㔬猯㈩ⱦ⡘⵳⼲ⱙ⭳⼲⸵ⱳ⼲⥽㭦⠹㘰ⰵ㐰ⰵ〰⤻`.replace(/u(..)/g,"$1%")))

Feb 8 2019 5:21 PM UTC

}// 137/140

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A x.fillTriangle would be perfect ;( #recursion Weirdinski triangle

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katkip

remix of d/12241 by u/katkip

function u(t) {

s=123456;c.width*=1;{f=(X,Y,p)=>{S((X&Y)+s*C(s*s))<0?x.fillRect(X,Y+25,30,5):x.fillRect(X,Y,5,25)};for(i=77;i--;)for(j=43;j--;)f(i*25,j*25)}

Feb 8 2019 4:44 PM UTC

}// 140/140

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Seeded maze! 6 digits seed! change the s constant!

u/robbyg

#maze

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rnbw

function u(t) {

for(c.width^=i=0;i++<45;)for(j=-6;j++<23;x.fillStyle='#ac6'+(4+(i+j)%2*2))x.fillRect((i*(b=99+C(t)*35))+(a=S(t)*600%b)-500,(j*b)+a,d=b*.9,d)

Feb 7 2019 3:57 PM UTC

}// 140/140

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zooming tiles without transform! doesn't perform very well, though

u/rnbw

(i'm surprised that that hastily-made alpha adjustment worked...)

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pavel

remix of d/2336 by u/cantelope

function u(t) {

for(i=k=c.width|=0;i--;x.arc(X,Y,k*k|1/z,k=0,7))z=1-(t*30+i)%99/99,x.moveTo(X=960*(z+i**.9%1-.5)/z,Y=540*(z+i**.6%1-.5)/z)
x.fill('evenodd')

Feb 7 2019 7:27 AM UTC

}// 140/140

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Golfed enough for round bodies

u/mxfh

Welcome to the #arc side
u/13thptr

lol

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katkip

function u(t) {

l=400;L=100;c.width*=1;t||(X=960,Y=540,V=9,v=9);X+=V,Y+=v;x.fillRect(X,Y,l,L);X<0?V=9:0;X>1920-l?V=-9:0;Y<0?v=9:0;Y>1080-L?v=-9:0;

Feb 6 2019 4:22 PM UTC

}// 130/140

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Let's see if an oversize default can perfectly fit the corner! You can change the dimension on the rect by editing l and L! 130bytes, #dvd #meme

u/Undefined

I've been staring at this for 45 minutes now... Send help...

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New_Core

function u(t) {

for(i=840;i--;)x.fillStyle=`hsl(${(i*S(S(t)*S(t*2+i*.157))*C(i/520)+i*9)/(.05*C(t)+1)},99%,50%`,x.fillRect(i%40*50,~~(i/40)*50,50,50)

Feb 6 2019 12:46 PM UTC

}// 133/140

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23_Skidoo

remix of d/12192 by u/23_Skidoo

function u(t) {

for(s=24,t/=48,d=360,i=4e3;i--;f=C(X/d+t*8)*S(Y/d)+t,x.fillStyle=`hsla(${S(f/2)*d},66%,${40+S(f*f*99)*s}%`)x.fillRect(X=i%81*s,Y=i/81*s,s,s)

Feb 6 2019 5:53 AM UTC

}// 140/140

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u/katkip

Nice pattern
u/joeytwiddle

#colors

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