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.

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robbyg

remix of d/7574 by u/robbyg

function u(t) {

c.width^=0
for(i=h=540;i--;)x.lineTo(960+C(i)*h*S(t-i**4),h+S(i)*h*C(t+i**4))
x.fill('evenodd')

Feb 12 2019 2:55 PM UTC

}// 95/140

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The void is staring back.

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pavel

function u(t) {

for(c.width|=i=20;i--;x.rect(-r,-r,2*r,2*r))r=(i-3*t%2)*60,r*=r>0,x.setTransform(1,0,0,1,960,540),x.rotate(S(r/500))
x.fill('evenodd')

Feb 12 2019 9:15 AM UTC

}// 134/140

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23_Skidoo

remix of d/12292 by u/23_Skidoo

function u(t) {

for(s=24,i=4e3;i--;f=(C(X)*S(Y/180))-t,x.fillStyle=`hsla(${S(i/s)*180} 66%${(50+S(f)*45)*S(i*i/s-t)}%`)x.fillRect(X=i%82*s,Y=~~(i/82)*s,s,s)

Feb 12 2019 1:53 AM UTC

}// 140/140

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23_Skidoo

remix of d/12291 by u/23_Skidoo

function u(t) {

for(s=24,d=360,i=4e3;i--;f=(C(X)*s+Y)/d-t,x.fillStyle=`hsla(${S(f)*d} 66%${C(f*9)*C(f*s+t)*51+Y/d*8}%`)x.fillRect(X=i%82*s,Y=~~(i/82)*s,s,s)

Feb 11 2019 9:11 AM UTC

}// 140/140

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u/pavel

FYI the trick of not putting a delimiter between s and l in the hsl call does not work in Safari, its all just black.
u/sigveseb

Kinda looks like a knitted sweater :)

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robbyg

function u(t) {

f=(X,Y,w)=>{var W=w/2,h=X-W,v=Y-W
x.rect(h,v,w,w)
if(W>9)f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)}
t||f(960,540,540)
x.fill('evenodd')

Feb 11 2019 1:07 AM UTC

}// 137/140

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#recursive squares

u/robbyg

Thanks u/katkip for the recursive examples
u/katkip

Beautiful
u/robbyg

133: f=(X,Y,w,W,h,v)=>(W=w/2)>4&&(x.rect(h=X-W,v=Y-W,w,w),f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)) t||f(960,z=540,z) x.fill('evenodd')

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rodrigo.siqueira

function u(t) {

c.width|=X=Y=Z=6;for(i=3e3;i--;)
X+=.1*(Y-X),
Y+=.01*(X*(29-Z)-Y),
Z+=.01*(X*Y-1.6*Z),
x.fillRect(960+X*30+Y*C(t*2)*10,1130-Z*22,6,9)

Feb 11 2019 12:26 AM UTC

}// 133/140

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Butterfly effect using Lorenz nonlinear equations with chaotic behavior. #Lorenz #attractor

u/katkip

#cute btw

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katkip

function u(t) {

c.width^=d=[];q=50*t|0;for(k=q;k--;)d.push((C(k*k)*3))
for(i in d.sort(g=(a,b)=>a-b))x.fillRect(1920/q*i,540+S(d[i]*d[i]+t)*300,2e3/q,999)

Feb 10 2019 3:10 PM UTC

}// 138/140

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Fluid sin, thx u/Undefined for golf help

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21medals

remix of d/12276 by u/21medals

function u(t) {

if(!t)for(d=[m=n=w=i=250];i--;)d[i]=i**9%999
for(c.width|=i=w;i--;)x.fillRect(i*8,0,8,d[i])
d[m]<(q=d[m+1])&&d.splice(m,2,q,d[m++])||(m=--n)

Feb 10 2019 3:06 PM UTC

}// 140/140

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Very slowly sorting 250 values using insertion #sort

u/katkip

#slow

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21medals

remix of d/12273 by u/21medals

function u(t) {

if(2>(n=frame%(i=1e3)))for(d=[];i--;)d[i]=i**9%540
for(c.width=i=999;i--;i<n&&d[i]<(q=d[i+1])&&d.splice(i,2,q,d[i]))x.fillRect(i,0,1,d[i])

Feb 10 2019 2:17 PM UTC

}// 138/140

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Slowly sorting 1000 values using insertion #sort

u/katkip

Cool

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katkip

remix of d/12268 by u/katkip

function u(t) {

t||(X=0,Y=0,s=v=V=1);for(i=999;i--;)x.fillRect(X,Y,V,V),X+=V,Y+=v,Y>1080-s?v*=-1:0,Y<0?v*=-1:0,X<0?V*=-1:0,X>1920-s?V*=-1:0;

Feb 10 2019 10:19 AM UTC

}// 124/140

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I just like the pattern

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